EP1654950A1 - Bracelet fastener - Google Patents

Bracelet fastener Download PDF

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Publication number
EP1654950A1
EP1654950A1 EP04405673A EP04405673A EP1654950A1 EP 1654950 A1 EP1654950 A1 EP 1654950A1 EP 04405673 A EP04405673 A EP 04405673A EP 04405673 A EP04405673 A EP 04405673A EP 1654950 A1 EP1654950 A1 EP 1654950A1
Authority
EP
European Patent Office
Prior art keywords
lever
branches
hook
cover
axis
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.)
Granted
Application number
EP04405673A
Other languages
German (de)
French (fr)
Other versions
EP1654950B1 (en
Inventor
Alain Aquillon
Jean-Marc Deriaz
Daniel Moille
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.)
Rolex SA
Original Assignee
Rolex 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 Rolex SA filed Critical Rolex SA
Priority to DE04405673T priority Critical patent/DE04405673T1/en
Priority to DE602004011525T priority patent/DE602004011525T2/en
Priority to EP04405673A priority patent/EP1654950B1/en
Priority to US11/248,904 priority patent/US7124478B2/en
Priority to JP2005312791A priority patent/JP4768395B2/en
Priority to CN2005101186600A priority patent/CN1768637B/en
Publication of EP1654950A1 publication Critical patent/EP1654950A1/en
Priority to HK06106144A priority patent/HK1084839A1/en
Application granted granted Critical
Publication of EP1654950B1 publication Critical patent/EP1654950B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
    • A44C5/18—Fasteners for straps, chains or the like
    • A44C5/20—Fasteners for straps, chains or the like for open straps, chains or the like
    • A44C5/2042—Fasteners provided with a turnable clamping lever
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
    • A44C5/18—Fasteners for straps, chains or the like
    • A44C5/22—Fasteners for straps, chains or the like for closed straps
    • A44C5/24—Fasteners for straps, chains or the like for closed straps with folding devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/21—Strap tighteners
    • Y10T24/2143—Strap-attached folding lever
    • Y10T24/2155—Jewelry-watch straps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/47—Strap-end-attaching devices
    • Y10T24/4736—Buckle connected
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/47—Strap-end-attaching devices
    • Y10T24/4745—End clasp
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/47—Strap-end-attaching devices
    • Y10T24/4782—Watch strap

Definitions

  • the present invention relates to a bracelet clasp having at least two arms articulated to one another by one of their respective ends, a locking device for holding the free ends of these two branches in the folded position and means for link between their free ends and the respective ends of a bracelet.
  • This type of clasp is well known particularly in the field of clasps for watch straps.
  • the folding branches of the clasp can increase very significantly the length of the bracelet in the open position of the clasp, which allows to pass the wristwatch around the hand without the need to separate the bracelet.
  • the object of the present invention is to overcome, at least in part, the aforementioned drawbacks.
  • this invention relates to a bracelet clasp according to the definition given by claim 1.
  • the lever of the clasp according to the invention acts well on the elastic return means as a lever, which makes it allows to obtain a reduction of the force exerted on it to bend the elastic return means. With this reduction of the manual force exerted on the lever to open the clasp, it can increase the strength of the elastic return means and thus increase the force exerted on the locking hook. This force continues to be exercised in the closed position, keeping the branches tight against each other, thus catching up the play between the branches of the clasp.
  • the clasp illustrated in Figures 1 to 4 comprises two branches 1, 2 articulated by one of their ends around an axis 3 ( Figure 4).
  • the free end of the branch 1 has a fastening element 4 which, in this embodiment, is in the form of a transverse element, parallel to the hinge axis 3.
  • This fastening element 4 is located in a portion 1a of the free end of the branch 1, curved outwards.
  • a space is provided between this fastening element 4 and the bottom of this curved portion la to allow insertion of a fastening member between the fastening element 4 and the bottom of the curved portion 1a as will be explained. thereafter.
  • This same free end is still integral with two axes of joints 5, 6, parallel to the hinge axis 3 of the branches 1, 2.
  • One of these axes serves to the articulation of a locking cover 7, while the other serves to articulate an end of one of the strands of the bracelet (not shown).
  • the free end of the branch 2 is thicker than the rest of this branch, to receive a hinge pin 8. This extra thickness is obtained by bending the face of this branch 2 facing the branch 1, so that closed position, this curved face of the branch 2 substantially matches the shape of the beginning of the curved portion la because it is shorter than the branch 1, as can be seen in Figure 3.
  • a connecting member 9 is articulated to the free end of the branch 2 about the hinge axis 8 to allow it to free articulation of at least 180 ° to facilitate the deployment of this branch 2 for the free passage of the hand in the open position.
  • This connecting member 9 comprises two other axes 10 and 11.
  • the axis 10 serves for the articulation of a locking lever 12 and the axis 11 serves to connect a cover 13.
  • This has two side walls parallel in which is formed a plurality of pairs of positioning elements formed of circular impressions 14 on their opposite internal faces, for fixing a bar (not shown) in one or the other pair of fingerprints, following the desired length for the bracelet.
  • the connecting member 9 has a surface 9a adjacent to the inner face of the upper wall of the cover 13. This surface 9a serves to block the pivoting of the cover 13 about the axis 11.
  • a spring 15 bears on a rod 16 secured to the connecting member 9, passes around the hinge axis 10 between this connecting member 9 and the locking lever 12 and the other end of this spring 15 bears against the inner face of the upper wall of the locking lever 12.
  • this spring creates a torque on the locking lever 12 which tends to do so turn counterclockwise in Figures 1-4.
  • two springs 15 are arranged along the pivot axis 10, on either side of the connecting member 9 which is at the center of the pivot axis 10.
  • the locking lever 12 carries a locking hook 17 shaped to be able to engage between the locking element 4 integral with the free end of the branch 1 and the bottom of the curved portion 1a of this branch 1, in which position it is held by the torque applied to it by the springs 15.
  • the rear end of the locking lever 12, situated under the front end of the cover 13 transmits a torque to the latter via the the link member 9.
  • This pair makes it possible to keep the lid 13 very close, or even to apply it against the bracelet strand, the end of which is fixed in one of the pairs of positioning elements formed of impressions 14 and prevents it from departing. This avoids the cover 13 the risk of clinging during movements made by the person wearing a bracelet with the clasp according to the invention.
  • a clasp whose cover can move freely from the bracelet due to its play, affects the appearance of this clasp and is a factor of depreciation.
  • the locking cover 7 is provided as additional security. It is intended to cover the locking lever 12 by tilting, once the locking hook 17 has been hooked to the locking element 4. This locking cover 7 can be held in the folded position by two fingerprints 7a provided on the internal faces of its side walls which can engage on the opposite ends of the pivot axis 10 of the lever 12 which then project from the side faces of the lever 12 and can retract against the pressure a coil spring disposed in the pivot axis 10, like a well-known piston bar for attaching a bracelet to the horns of a wristwatch box.
  • the second embodiment differs essentially from the first embodiment because of the absence of the second locking cover 7. Another difference lies in the fact that an axis 20 serves for the articulation of the lever 22 on the connecting member 19, and to connect the lid 23 to this connecting member 19.
  • the lever 22 is covered with a cover 28 which increases the length of the lever arm.
  • This lever 22 carries a hook 27 intended to hook to the locking element 4 of the branch 1 exactly as in the first embodiment.
  • the third embodiment illustrated in FIG. 5 is intended to integrate the clasp into a bracelet to articulated links formed of at least three longitudinal rows of links, in which the links of a row are offset longitudinally by half a step from those of the adjacent row, the pitch corresponding to the longitudinal distance between two adjacent links of the same row.
  • the free end of the branch 1 is integral with at least one link 29, several similar links can be aligned transversely to the link 29 according to the number of rows of links that includes the bracelet to be connected to the clasp.
  • This or these links 29 comprise a transverse locking rod 34 and a screw shaft 35 to make the connection with the bracelet (not shown).
  • the connecting member 30 which is articulated about an articulation axis 31, at the free end of the branch 2, comprises a second hinge axis 32 which is articulated the locking lever 33 which is present in the external form of a link 33a which is fixed a gripping element 33b.
  • the lower face front portion of the locking lever 33 is recessed to form a hook 33c.
  • a housing 33d is provided in the rear portion of the underside of the link lever 33a for housing a cylinder 36 which encloses a coil spring and a piston 37, pressed outwardly by the coil spring.
  • This piston 37 is limited by its rear portion of larger diameter, so that it stops at the end of the stroke, against the front face of the cylinder 36 through an opening which passes the visible outer portion, of smaller diameter of the piston 37.
  • the outer end of the piston 37 rests against the upper face of the branch 2 of the clasp and applies to the lever 33 a torque around the axis of articulation 32 years the opposite direction to that needles of the watch.
  • the hinge axis 32 of the connecting member is also used for the articulation of two connecting links 38, located transversely on either side of the locking lever 33 in the form of a link 33a.
  • These connecting links 38 comprise a hinge pin 39 to allow the attachment of an end of a strand of the bracelet (not shown).
  • the hooking of the locking hook 33c on the locking rod 34 is effected by raising the lever 33 or by rotating it clockwise about the hinge axis 32 against the force of the return spring exerted via the piston 37.

Abstract

The clasp has a latching device keeping free ends of two branches, where one of the free ends comprises a lever (12), and the other free end includes a coupling component formed to allow a latching hook (17) to engage with the component. The lever has an elastic unit (15) exerting a torque on the lever, where the lever pivots against the unit during the engagement and disengagement of the hook with the component.

Description

La présente invention se rapporte à un fermoir de bracelet comportant au moins deux branches articulées l'une à l'autre par une de leurs extrémités respectives, un dispositif de verrouillage pour maintenir les extrémités libres de ces deux branches en position repliée et des moyens de liaison entre leurs extrémités libres et les extrémités respectives d'un bracelet.The present invention relates to a bracelet clasp having at least two arms articulated to one another by one of their respective ends, a locking device for holding the free ends of these two branches in the folded position and means for link between their free ends and the respective ends of a bracelet.

Ce type de fermoir est bien connu en particulier dans le domaine des fermoirs pour bracelets de montres. Les branches dépliantes du fermoir permettent d'augmenter très sensiblement la longueur du bracelet en position d'ouverture du fermoir, ce qui permet de faire passer la montre-bracelet autour de la main sans avoir besoin de séparer le bracelet.This type of clasp is well known particularly in the field of clasps for watch straps. The folding branches of the clasp can increase very significantly the length of the bracelet in the open position of the clasp, which allows to pass the wristwatch around the hand without the need to separate the bracelet.

Il existe un grand nombre de systèmes d'accrochage ou de verrouillage pour ce type de fermoir. La plupart d'entre eux utilisent l'élasticité des branches dépliantes du fermoir. Les propriétés élastiques de tels fermoirs sont donc tributaires du matériau et des dimensions des branches du fermoir. Un même fermoir n'aura donc pas les mêmes caractéristiques si il est en acier ou en or par exemple, si les lames sont usinées dans la masse ou si elles sont en tôle emboutie.There is a large number of locking or locking systems for this type of clasp. Most of them use the elasticity of the folding branches of the clasp. The elastic properties of such clasps are therefore dependent on the material and the dimensions of the branches of the clasp. The same clasp will not have the same characteristics if it is steel or gold, for example, if the blades are machined in the mass or if they are stamped sheet.

On a déjà proposé dans le EP 1 279 349 un fermoir à branches dépliantes comprenant un ou deux leviers articulés autour d'axes perpendiculaire à une des branches du bracelet et rappelés en position de verrouillage par un ressort disposé transversalement aux lames du fermoir, de sorte que ces leviers sont accessibles sur les deux faces latérales opposées du fermoir sur lesquelles ils font saillie. Ces leviers présentent chacun un rebord interne qui s'étend dans un plan perpendiculaire aux axes de pivotement respectifs des leviers et qui sont destinés à s'engager sur des rebords complémentaires d'un organe de verrouillage solidaire d'une extrémité d'une autre branche du fermoir. En écartant les rebords des leviers par des pressions exercées sur eux à l'encontre de la force exercée par le ressort, l'organe de verrouillage peut pénétrer entre les leviers et est emprisonné lorsqu'on relâche la pression sur les leviers qui sont ramenés dans leur position de verrouillage par la pression du ressort.It has already been proposed in EP 1 279 349 a clasp with folding branches comprising one or two levers articulated about axes perpendicular to one of the branches of the bracelet and recalled in the locking position by a spring disposed transversely to the clasp blades, so that these levers are accessible on the two opposite sides of the clasp on which they project. These levers each have an internal rim which extends in a plane perpendicular to the respective pivot axes of the levers and which are intended to engage on complementary edges of a locking member secured to one end of another branch of the clasp. By separating the rims of the levers by pressure exerted on them against the force exerted by the spring, the locking member can penetrate between the levers and is trapped when releasing the pressure on the levers which are brought into their locking position by the spring pressure.

Si cette solution permet de rendre le verrouillage indépendant des propriétés élastiques des lames ou branches du fermoir, elle présente un certain nombre de défauts. L'un de ceux-ci est relatif à la sécurité. L'actionnement des leviers pour commander l'ouverture du fermoir résulte d'une simple pression sur des poussoirs qui font saillie latéralement du fermoir. De ce fait l'ouverture du fermoir peut être accidentelle ou involontaire suite à une pression machinale sur les poussoirs. Ce risque est bien évidemment inadmissible, en particulier pour une montre de prix.If this solution makes the locking independent of the elastic properties of the blades or branches of the clasp, it has a number of defects. One of these is related to security. The operation of the levers to control the opening of the clasp results from a simple pressure on pushers that project laterally from the clasp. Therefore the opening of the clasp can be accidental or involuntary following mechanical pressure on the pushers. This risk is obviously inadmissible, especially for a price watch.

On a proposé de remédier à cet inconvénient dans le EP 1 374 716, dans lequel le dispositif d'accrochage des deux branches du bracelet est associé à un système de verrouillage qui comporte un organe de blocage du poussoir empêchant son actionnement intempestif.It has been proposed to overcome this drawback in EP 1 374 716, in which the attachment device of the two branches of the bracelet is associated with a locking system which comprises a blocking member of the pusher preventing its inadvertent actuation.

Un autre inconvénient que présentent les deux dispositifs susmentionnés vient du fait que la force que le ressort de rappel exerce sur les leviers ne s'exerce pas sur les branches du fermoir, en sorte qu'il peut subsister un jeu entre celles-ci lorsqu'elles sont en position de fermeture, ce qui est perçu comme un défaut par le porteur de la montre-bracelet et n'est donc pas acceptable pour un produit de qualité.Another disadvantage presented by the two aforementioned devices comes from the fact that the force that the return spring exerts on the levers is not exerted on the branches of the clasp, so that there can remain a clearance between them when they are in the closed position, which is perceived as a defect by the wearer of the wristwatch and is therefore not acceptable for a quality product.

Le but de la présente invention est de remédier, au moins en partie, aux inconvénients susmentionnés.The object of the present invention is to overcome, at least in part, the aforementioned drawbacks.

A cet effet, cette invention a pour objet un fermoir de bracelet conforme à la définition donnée par la revendication 1.To this end, this invention relates to a bracelet clasp according to the definition given by claim 1.

Contrairement à la solution susmentionnée dans laquelle on a de simples poussoirs sur lesquels la force du ressort de rappel agit directement, on pourra constater que le levier du fermoir selon l'invention agit bien sur les moyens de rappel élastiques comme un levier, ce qui lui permet d'obtenir une démultiplication de la force exercée sur lui pour faire fléchir les moyens de rappel élastique. Grâce à cette démultiplication de la force manuelle exercée sur le levier pour ouvrir le fermoir, on peut augmenter la force des moyens de rappel élastique et donc augmenter la force qui s'exerce sur le crochet de verrouillage. Cette force continue de s'exercer en position de fermeture, maintenant les branches serrées l'une contre l'autre, rattrapant ainsi les jeux entre les branches du fermoir.Unlike the aforementioned solution in which there are simple pushers on which the force of the return spring acts directly, it can be seen that the lever of the clasp according to the invention acts well on the elastic return means as a lever, which makes it allows to obtain a reduction of the force exerted on it to bend the elastic return means. With this reduction of the manual force exerted on the lever to open the clasp, it can increase the strength of the elastic return means and thus increase the force exerted on the locking hook. This force continues to be exercised in the closed position, keeping the branches tight against each other, thus catching up the play between the branches of the clasp.

Il existe plusieurs autres avantages que l'on découvrira à la lecture de la description qui suit faite à l'aide des dessins annexés qui illustrent, schématiquement et à titre d'exemple, trois formes d'exécution du fermoir objet de la présente invention.

  • La figure 1 est une vue éclatée d'une première forme d'exécution;
  • la figure 2 est une première vue en coupe longitudinale selon un premier plan de coupe, en position fermée d'une première forme d'exécution;
  • la figure 3 est une seconde vue en coupe longitudinale selon un second plan de coupe, en position fermée de cette même forme d'exécution;
  • la figure 4 est une vue en coupe longitudinale du fermoir selon cette forme d'exécution, en position ouverte;
  • la figure 5 est une vue en coupe d'une deuxième forme d'exécution, en position ouverte du fermoir;
  • la figure 6 est une vue en coupe longitudinale d'une troisième forme d'exécution.
There are several other advantages that will be discovered on reading the following description made with the aid of the accompanying drawings which illustrate, schematically and by way of example, three embodiments of the clasp object of the present invention.
  • Figure 1 is an exploded view of a first embodiment;
  • Figure 2 is a first longitudinal sectional view along a first section plane, in the closed position of a first embodiment;
  • Figure 3 is a second longitudinal sectional view along a second section plane, in the closed position of the same embodiment;
  • Figure 4 is a longitudinal sectional view of the clasp according to this embodiment, in the open position;
  • Figure 5 is a sectional view of a second embodiment, in the open position of the clasp;
  • Figure 6 is a longitudinal sectional view of a third embodiment.

Le fermoir illustré par les figures 1 à 4 comporte deux branches 1, 2 articulées par une de leurs extrémités autour d'un axe 3 (figure 4). L'extrémité libre de la branche 1 présente un élément d'accrochage 4 qui, dans cette forme d'exécution, se présente sous la forme d'un élément transversal, parallèle à l'axe d'articulation 3. Cet élément d'accrochage 4 se situe dans une partie 1a de l'extrémité libre de la branche 1, incurvée vers l'extérieur. Un espace est ménagé entre cet élément d'accrochage 4 et le fond de cette partie incurvée la pour permettre d'insérer un organe d'accrochage entre l'élément d'accrochage 4 et le fond de la partie incurvée 1a comme on l'expliquera par la suite. Cette même extrémité libre est encore solidaire de deux axes d'articulations 5, 6, parallèles à l'axe d'articulation 3 des branches 1, 2. L'un 5 de ces axes sert à l'articulation d'un couvercle de verrouillage 7, tandis que l'autre sert à l'articulation d'une extrémité d'un des brins du bracelet (non représenté).The clasp illustrated in Figures 1 to 4 comprises two branches 1, 2 articulated by one of their ends around an axis 3 (Figure 4). The free end of the branch 1 has a fastening element 4 which, in this embodiment, is in the form of a transverse element, parallel to the hinge axis 3. This fastening element 4 is located in a portion 1a of the free end of the branch 1, curved outwards. A space is provided between this fastening element 4 and the bottom of this curved portion la to allow insertion of a fastening member between the fastening element 4 and the bottom of the curved portion 1a as will be explained. thereafter. This same free end is still integral with two axes of joints 5, 6, parallel to the hinge axis 3 of the branches 1, 2. One of these axes serves to the articulation of a locking cover 7, while the other serves to articulate an end of one of the strands of the bracelet (not shown).

L'extrémité libre de la branche 2 est plus épaisse que le reste de cette branche, pour recevoir un axe d'articulation 8. Cette surépaisseur est obtenue en incurvant la face de cette branche 2 tournée vers la branche 1, en sorte qu'en position fermée, cette face incurvée de la branche 2 épouse sensiblement la forme du début de la partie incurvée la du fait qu'elle est plus courte que la branche 1, comme on peut le constater sur la figure 3.The free end of the branch 2 is thicker than the rest of this branch, to receive a hinge pin 8. This extra thickness is obtained by bending the face of this branch 2 facing the branch 1, so that closed position, this curved face of the branch 2 substantially matches the shape of the beginning of the curved portion la because it is shorter than the branch 1, as can be seen in Figure 3.

Un organe de liaison 9 est articulé à l'extrémité libre de la branche 2 autour de l'axe d'articulation 8 pour lui permettre une libre articulation d'au moins 180° afin de faciliter le déploiement de cette branche 2 pour le libre passage de la main en position d'ouverture. Cet organe de liaison 9 comporte deux autres axes 10 et 11. L'axe 10 sert à l'articulation d'un levier de verrouillage 12 et l'axe 11 sert à relier d'un couvercle 13. Celui-ci présente deux parois latérales parallèles dans lesquelles est ménagée une pluralité de paires d'éléments de positionnement formés d'empreintes circulaires 14 sur leurs faces internes opposées, pour la fixation d'une barrette (non représentée) dans l'une ou l'autre paire d'empreintes, suivant la longueur désirée pour le bracelet.A connecting member 9 is articulated to the free end of the branch 2 about the hinge axis 8 to allow it to free articulation of at least 180 ° to facilitate the deployment of this branch 2 for the free passage of the hand in the open position. This connecting member 9 comprises two other axes 10 and 11. The axis 10 serves for the articulation of a locking lever 12 and the axis 11 serves to connect a cover 13. This has two side walls parallel in which is formed a plurality of pairs of positioning elements formed of circular impressions 14 on their opposite internal faces, for fixing a bar (not shown) in one or the other pair of fingerprints, following the desired length for the bracelet.

L'organe de liaison 9 présente une surface 9a adjacente à la face interne de la paroi supérieure du couvercle 13. Cette surface 9a sert à bloquer le pivotement du couvercle 13 autour de l'axe 11. L'extrémité de ce couvercle 13, située du côté de l'extrémité libre de la branche 2, recouvre l'extrémité arrière du levier de verrouillage 12.The connecting member 9 has a surface 9a adjacent to the inner face of the upper wall of the cover 13. This surface 9a serves to block the pivoting of the cover 13 about the axis 11. The end of this cover 13, located on the side of the free end of the branch 2, covers the rear end of the locking lever 12.

Comme on le voit en particulier sur la figure 3, une extrémité d'un ressort 15 prend appui sur une tige 16 solidaire de l'organe de liaison 9, passe autour de l'axe d'articulation 10 entre cet organe de liaison 9 et le levier de verrouillage 12 et l'autre extrémité de ce ressort 15 prend appui contre la face interne de la paroi supérieure du levier de verrouillage 12. De ce fait, ce ressort crée un couple sur le levier de verrouillage 12 qui tend à le faire tourner dans le sens inverse de celui des aiguilles d'une montre sur les figures 1-4. En réalité, de préférence, deux ressorts 15 sont disposés le long de l'axe de pivotement 10, de part et d'autre de l'organe de liaison 9 qui lui, est au centre de l'axe de pivotement 10.As can be seen in particular in FIG. 3, one end of a spring 15 bears on a rod 16 secured to the connecting member 9, passes around the hinge axis 10 between this connecting member 9 and the locking lever 12 and the other end of this spring 15 bears against the inner face of the upper wall of the locking lever 12. As a result, this spring creates a torque on the locking lever 12 which tends to do so turn counterclockwise in Figures 1-4. In fact, preferably, two springs 15 are arranged along the pivot axis 10, on either side of the connecting member 9 which is at the center of the pivot axis 10.

Le levier de verrouillage 12 porte un crochet de verrouillage 17 conformé pour pouvoir s'engager entre l'élément de verrouillage 4 solidaire de l'extrémité libre de la branche 1 et le fond de la partie incurvée 1a de cette branche 1, position dans laquelle il est maintenu par le couple que lui applique les ressorts 15. Dans cette position de verrouillage, l'extrémité arrière du levier de verrouillage 12, située sous l'extrémité avant du couvercle 13, transmet un couple à ce dernier par l'intermédiaire de l'organe de liaison 9. Ce couple permet de maintenir le couvercle 13 très proche, voire de l'appliquer contre le brin de bracelet dont l'extrémité est fixée dans une des paires d'éléments de positionnement formés d'empreintes 14 et l'empêche de s'en écarter. Ceci évite au couvercle 13 le risque de s'accrocher lors des mouvements faits par la personne qui porte un bracelet muni du fermoir selon l'invention. En outre, un fermoir dont le couvercle peut s'écarter librement du bracelet en raison de son jeu, nuit à l'aspect de ce fermoir et en constitue un facteur de dépréciation.The locking lever 12 carries a locking hook 17 shaped to be able to engage between the locking element 4 integral with the free end of the branch 1 and the bottom of the curved portion 1a of this branch 1, in which position it is held by the torque applied to it by the springs 15. In this locking position, the rear end of the locking lever 12, situated under the front end of the cover 13, transmits a torque to the latter via the the link member 9. This pair makes it possible to keep the lid 13 very close, or even to apply it against the bracelet strand, the end of which is fixed in one of the pairs of positioning elements formed of impressions 14 and prevents it from departing. This avoids the cover 13 the risk of clinging during movements made by the person wearing a bracelet with the clasp according to the invention. In addition, a clasp whose cover can move freely from the bracelet due to its play, affects the appearance of this clasp and is a factor of depreciation.

On a indiqué en traits mixtes sur la figure 4 les trajectoires respectives de la branche 2 autour de son axe d'articulation 3 et du crochet de verrouillage 17 autour de son axe de pivotement 10. On peut constater que les deux trajectoires se coupent sous un angle supérieur à 60°. Grâce à cette disposition, en position de verrouillage, toute force exercée sur les branches 1, 2 pour tendre à les séparer engendre une force tangente au cercle de la trajectoire de ces branches passant par le point de contact entre le crochet de verrouillage 17 et l'élément de verrouillage 4, alors que la réaction du crochet 17 sera une perpendiculaire à la tangente à sa trajectoire autour de l'axe de pivotement 10 passant par ce même point de contact. Cette perpendiculaire passe par l'axe de pivotement 10 et ne crée donc aucun couple qui serait susceptible de favoriser l'ouverture du fermoir et ceci, quelle que soit la grandeur de la force appliquée pour séparer les branches 1 et 2. Il s'agit donc bien d'un dispositif de verrouillage.4 shows the respective trajectories of the branch 2 about its hinge axis 3 and the latching hook 17 about its pivot axis 10. It can be seen that the two paths intersect under a plane. angle greater than 60 °. With this arrangement, in the locking position, any force exerted on the branches 1, 2 to tend to separate generates a force tangent to the circle of the trajectory of these branches passing through the point of contact between the locking hook 17 and the locking element 4, while the reaction of the hook 17 will be a perpendicular to the tangent to its path about the pivot axis 10 passing through the same point of contact. This perpendicular passes through the pivot axis 10 and therefore does not create any torque that could promote the opening of the clasp and this, regardless of the magnitude of the force applied to separate the branches 1 and 2. It is therefore indeed a locking device.

Seul le soulèvement de la partie avant du levier 12 pour le faire pivoter dans le sens des aiguilles de la montre, à l'encontre du couple des ressorts 15 peut provoquer l'ouverture du fermoir. Théoriquement, il serait aussi possible d'exercer une pression sur la partie du levier 12 située à droite de son axe d'articulation 10 en se référant aux figures 1-4. Toutefois, compte tenu du fait que l'extrémité arrière de cette partie du levier 12 est située sous le couvercle 13, la place disponible pour exercer manuellement cette pression est insuffisante. En outre, il faudrait agir directement à l'encontre de la force des ressorts 15, alors qu'en soulevant le levier 12 par son extrémité avant, on bénéficie du bras de levier qui réduit l'effort nécessaire pour vaincre la force des ressorts.Only lifting the front portion of the lever 12 to rotate clockwise, against the torque of the springs 15 can cause the opening of the clasp. Theoretically, it would also be possible to exert pressure on the portion of the lever 12 to the right of its hinge axis 10 with reference to Figures 1-4. However, considering that the rear end of this portion of the lever 12 is located under the cover 13, the space available to manually exert this pressure is insufficient. In addition, it would be necessary to act directly against the force of the springs 15, while lifting the lever 12 by its front end, it benefits from the lever arm which reduces the force required to overcome the force of the springs.

Il est donc pratiquement exclu que l'on puisse ouvrir le fermoir involontairement en n'exerçant qu'une pression sur la partie droite (en se référant aux figures 1-4) du levier 12, du fait que l'on n'a qu'un accès difficile à la partie la plus proche de l'axe et que plus on est proche de l'axe plus la force nécessaire à son pivotement est importante, d'autant plus que l'on agit alors directement à l'endroit où s'exerce la force des ressorts 15 sur le levier 12. Au contraire, le soulèvement du levier 12 permet de bénéficier du bras de levier, en sorte que la pression des ressorts 15 peut être choisie relativement élevée puisque l'effort nécessaire au basculement du levier 12 pour l'ouverture est réduit grâce au bras de levier. L'ouverture accidentelle ou par inadvertance de ce fermoir est donc pratiquement exclue.It is therefore practically impossible for the clasp to be opened involuntarily by exerting only a pressure on the right part (referring to FIGS. 1-4) of the lever 12, because only difficult access to the part closest to the axis and that the closer you are to the axis, the greater the force necessary to pivot it is important, especially since it acts directly at the place where the force of the springs 15 is exerted on the lever 12. On the other hand, the lifting of the lever 12 makes it possible to benefit from the lever arm, so that the pressure of the springs 15 can be chosen relatively high since the force required to tilt the lever 12 for opening is reduced thanks to the lever arm. The accidental or inadvertent opening of this clasp is virtually excluded.

Le couvercle de verrouillage 7 est prévu à titre de sécurité complémentaire. Il est destiné à recouvrir le levier de verrouillage 12 par basculement, une fois que le crochet de verrouillage 17 a été accroché à l'élément de verrouillage 4. Ce couvercle de verrouillage 7 peut être maintenu en position rabattue grâce à deux empreintes 7a ménagées sur les faces internes de ses parois latérales qui peuvent venir s'encliqueter sur les extrémités opposées de l'axe de pivotement 10 du levier 12 qui font alors saillie des faces latérales de ce levier 12 et peuvent s'escamoter à l'encontre de la pression d'un ressort à boudin disposé dans l'axe de pivotement 10, à l'instar d'une barrette à piston bien connue pour fixer un bracelet aux cornes d'une boîte de montre-bracelet.The locking cover 7 is provided as additional security. It is intended to cover the locking lever 12 by tilting, once the locking hook 17 has been hooked to the locking element 4. This locking cover 7 can be held in the folded position by two fingerprints 7a provided on the internal faces of its side walls which can engage on the opposite ends of the pivot axis 10 of the lever 12 which then project from the side faces of the lever 12 and can retract against the pressure a coil spring disposed in the pivot axis 10, like a well-known piston bar for attaching a bracelet to the horns of a wristwatch box.

La deuxième forme d'exécution (figure 5) diffère essentiellement de la première forme d'exécution en raison de l'absence du second couvercle de verrouillage 7. Une autre différence réside dans le fait qu'un axe 20 sert à l'articulation du levier 22 sur l'organe de liaison 19, ainsi qu'à relier le couvercle 23 à cet organe de liaison 19. Le levier 22 est recouvert d'un capot 28 qui augmente la longueur du bras de levier. Ce levier 22 porte un crochet 27 destiné à s'accrocher à l'élément de verrouillage 4 de la branche 1 exactement comme dans la première forme d'exécution.The second embodiment (FIG. 5) differs essentially from the first embodiment because of the absence of the second locking cover 7. Another difference lies in the fact that an axis 20 serves for the articulation of the lever 22 on the connecting member 19, and to connect the lid 23 to this connecting member 19. The lever 22 is covered with a cover 28 which increases the length of the lever arm. This lever 22 carries a hook 27 intended to hook to the locking element 4 of the branch 1 exactly as in the first embodiment.

Dans ce cas, le ou les ressorts de rappel 25 prennent appui sur une cheville 26 solidaire du levier 22 à une de leurs extrémités et contre la face interne de la paroi supérieure de l'organe de liaison 19 à leurs autres extrémités, appliquant ainsi au levier 22 un couple autour de l'axe d'articulation 20 dirigé dans le sens contraire à celui des aiguilles de la montre.In this case, or the return springs 25 are supported on a pin 26 secured to the lever 22 at one of their ends and against the inner face of the upper wall of the connecting member 19 at their other ends, thus applying to the lever 22 a couple about the hinge axis 20 directed in the opposite direction to that of the needles of the watch.

La troisième forme d'exécution illustrée par la figure 5 est destinée à intégrer le fermoir dans un bracelet à maillons articulés formé d'au moins trois rangées longitudinales de maillons, dans lequel les maillons d'une rangée sont décalés longitudinalement d'un demi pas par rapport à ceux de la rangée adjacente, le pas correspondant à la distance longitudinale entre deux maillons adjacents de la même rangée.The third embodiment illustrated in FIG. 5 is intended to integrate the clasp into a bracelet to articulated links formed of at least three longitudinal rows of links, in which the links of a row are offset longitudinally by half a step from those of the adjacent row, the pitch corresponding to the longitudinal distance between two adjacent links of the same row.

L'extrémité libre de la branche 1 est solidaire d'au moins un maillon 29, plusieurs maillons semblables pouvant être alignés transversalement au maillon 29 en fonction du nombre de rangées de maillons que comporte le bracelet qui doit être relié au fermoir. Ce ou ces maillons 29 comportent une tige transversale de verrouillage 34 et un axe à vis 35 pour effectuer la liaison avec le bracelet (non représenté).The free end of the branch 1 is integral with at least one link 29, several similar links can be aligned transversely to the link 29 according to the number of rows of links that includes the bracelet to be connected to the clasp. This or these links 29 comprise a transverse locking rod 34 and a screw shaft 35 to make the connection with the bracelet (not shown).

De même, l'organe de liaison 30 qui est articulé autour d'un axe d'articulation 31, à l'extrémité libre de la branche 2, comporte un second axe d'articulation 32 auquel est articulé le levier de verrouillage 33 qui se présente sous la forme externe d'un maillon 33a auquel est fixé un élément de préhension 33b. La partie avant de face inférieure du levier de verrouillage 33 est évidée pour former un crochet 33c. Un logement 33d est ménagé dans la partie arrière de la face inférieure du levier en forme de maillon 33a pour loger un cylindre 36 qui renferme un ressort à boudin et un piston 37, pressé vers l'extérieur par le ressort à boudin. La course de ce piston 37 est limitée par sa partie arrière de plus grand diamètre, de sorte que celle-ci bute, en fin de course, contre la face avant du cylindre 36 à travers une ouverture de laquelle passe la portion externe visible, de plus petit diamètre du piston 37. L'extrémité externe de ce piston 37 s'appuie contre la face supérieure de la branche 2 du fermoir et applique au levier 33 un couple autour de l'axe d'articulation 32 ans le sens contraire à celui des aiguilles de la montre.Similarly, the connecting member 30 which is articulated about an articulation axis 31, at the free end of the branch 2, comprises a second hinge axis 32 which is articulated the locking lever 33 which is present in the external form of a link 33a which is fixed a gripping element 33b. The lower face front portion of the locking lever 33 is recessed to form a hook 33c. A housing 33d is provided in the rear portion of the underside of the link lever 33a for housing a cylinder 36 which encloses a coil spring and a piston 37, pressed outwardly by the coil spring. The stroke of this piston 37 is limited by its rear portion of larger diameter, so that it stops at the end of the stroke, against the front face of the cylinder 36 through an opening which passes the visible outer portion, of smaller diameter of the piston 37. The outer end of the piston 37 rests against the upper face of the branch 2 of the clasp and applies to the lever 33 a torque around the axis of articulation 32 years the opposite direction to that needles of the watch.

L'axe d'articulation 32 de l'organe de liaison sert encore à l'articulation de deux maillons de liaison 38, situés transversalement de part et d'autre du levier de verrouillage 33 en forme de maillon 33a. Ces maillons de liaison 38 comportent un axe d'articulation à vis 39 pour permettre la fixation d'une extrémité d'un brin du bracelet (non représenté). L'accrochage du crochet de verrouillage 33c sur la tige de verrouillage 34 s'effectue en soulevant le levier 33 ou en le faisant pivoter dans le sens des aiguilles de la montre autour de l'axe d'articulation 32 à l'encontre de la force du ressort de rappel exercée par l'intermédiaire du piston 37.The hinge axis 32 of the connecting member is also used for the articulation of two connecting links 38, located transversely on either side of the locking lever 33 in the form of a link 33a. These connecting links 38 comprise a hinge pin 39 to allow the attachment of an end of a strand of the bracelet (not shown). The hooking of the locking hook 33c on the locking rod 34 is effected by raising the lever 33 or by rotating it clockwise about the hinge axis 32 against the force of the return spring exerted via the piston 37.

Claims (10)

Fermoir de bracelet comportant au moins deux branches (1, 2) articulées l'une à l'autre par une de leurs extrémités respectives, un dispositif de verrouillage pour maintenir les extrémités libres de ces deux branches en position repliée et des moyens de liaison (6, 35) entre leurs extrémités libres et les extrémités respectives d'un bracelet, caractérisé en ce que l'une desdites extrémités libres comporte un levier (12, 22, 33), articulé autour d'un axe (10, 20, 32) parallèle à l'axe d'articulation (3) desdites branches (1, 2) et solidaire d'un crochet de verrouillage (17, 27, 33c), l'autre des extrémités libres comportant un élément d'accrochage (4, 34) conformé pour permettre audit crochet de verrouillage (17, 27, 33c) de venir en prise avec lui, pour maintenir lesdites branches (1, 2) en position repliée, ledit levier (12, 22, 33) comportant des moyens élastiques (15, 25, 37) pour exercer un couple sur lui et des moyens de butée (13, 23) pour limiter son pivotement, sous l'effet dudit couple, autour dudit axe (10, 20, 32), dans une position correspondant au moins à l'engagement dudit crochet de verrouillage (17, 27, 33c) avec ledit élément d'accrochage (4, 34), dans laquelle lesdits moyens élastique (15, 25, 37) sont sous tension, en sorte que ledit levier (12, 22, 33) doit pivoter à l'encontre desdits moyens élastiques (15, 25, 37) lors de l'engagement et du dégagement dudit crochet de verrouillage (17, 27, 33c) avec ledit élément d'accrochage (4, 34).Clasp bracelet comprising at least two branches (1, 2) articulated to each other by one of their respective ends, a locking device for holding the free ends of these two branches in the folded position and connecting means ( 6, 35) between their free ends and the respective ends of a bracelet, characterized in that one of said free ends comprises a lever (12, 22, 33) hinged about an axis (10, 20, 32 ) parallel to the hinge axis (3) of said branches (1, 2) and integral with a locking hook (17, 27, 33c), the other of the free ends comprising a hooking element (4, 34) shaped to allow said locking hook (17, 27, 33c) to engage with it, to maintain said legs (1, 2) in the folded position, said lever (12, 22, 33) having elastic means ( 15, 25, 37) for exerting a torque on it and abutment means (13, 23) for limiting its angle in a position corresponding at least to the engagement of said locking hook (17, 27, 33c) with said hooking element (4, 34), wherein said resilient means (15, 25, 37) are under tension so that said lever (12, 22, 33) is to pivot against said resilient means (15, 25, 37) when engaging and disengaging said locking hook (17, 27, 33c) with said hooking member (4, 34). Fermoir selon la revendication 1 dans lequel en position d'accrochage, ledit crochet (17, 27, 33c) s'étend en direction de l'autre (1) desdites branches articulées l'une à l'autre, sur une partie dudit levier (12, 22, 33) située du côté de l'axe d'articulation (10, 20, 32) de ce levier (12, 22, 33) opposée à l'axe d'articulation (3) desdites branches (1, 2) et est recourbé en direction de l'axe d'articulation (3) de ces branches (1, 2), alors que le couple exercé sur ledit levier (12, 22, 33) par lesdits moyens élastiques (15, 25, 37) tend à faire tourner ledit crochet (17, 27, 33c) en direction de l'axe d'articulation (3) entre lesdites branches (1, 2), en sorte que le dégagement et l'engagement dudit crochet (17, 27, 33c) dudit élément d'accrochage (4, 34) résulte respectivement de l'éloignement et du rapprochement de la partie dudit levier (12, 22, 33) portant ledit crochet (17, 27, 33c) par rapport à ladite lame (1) portant l'élément d'accrochage (4, 34).Clasp according to claim 1 wherein in the latching position, said hook (17, 27, 33c) extends towards the other (1) of said branches articulated to one another, on a portion of said lever (12, 22, 33) located on the side of the hinge axis (10, 20, 32) of this lever (12, 22, 33) opposite to the hinge axis (3) of said branches (1, 2) and is curved towards the hinge axis (3) of these branches (1, 2), whereas the torque exerted on said lever (12, 22, 33) by said elastic means (15, 25, 37) tends to rotate said hook (17, 27, 33c) in the direction of the hinge axis (3 ) between said legs (1, 2), so that the disengagement and engagement of said hook (17, 27, 33c) of said hooking element (4, 34) results respectively from the distance and the approximation of the part said lever (12, 22, 33) carrying said hook (17, 27, 33c) with respect to said blade (1) carrying the hooking element (4, 34). Fermoir selon l'une des revendications 1 et 2, selon lequel ledit levier (12, 22, 33) est relié à l'extrémité libre de ladite branche (2) par une pièce de liaison (9, 19, 30) comportant au moins deux axes d'articulation (8, 10, 11, 18, 20, 31, 32)) parallèles à celui (3) desdites branches (1, 2), un premier (8, 18, 31) entre cette pièce de liaison (9, 19, 30) et l'extrémité libre de ladite branche (2) et un deuxième (10, 20, 32) entre cette pièce de liaison (9, 19, 30) et ledit levier (12, 22, 33).Clasp according to one of claims 1 and 2, wherein said lever (12, 22, 33) is connected to the free end of said branch (2) by a connecting piece (9, 19, 30) comprising at least two axes of articulation (8, 10, 11, 18, 20, 31, 32) parallel to that (3) of said branches (1, 2), a first (8, 18, 31) between this connecting piece ( 9, 19, 30) and the free end of said leg (2) and a second (10, 20, 32) between this connecting piece (9, 19, 30) and said lever (12, 22, 33). Fermoir selon la revendication 3, dans lequel le deuxième axe d'articulation (32) de ladite pièce de liaison (30) sert également d'axe d'articulation d'une extrémité du bracelet.Clasp according to claim 3, wherein the second hinge pin (32) of said connecting piece (30) also serves as hinge axis of one end of the bracelet. Fermoir selon la revendication 3, dans lequel ladite pièce de liaison (9) comporte un troisième axe de liaison (11) pour un couvercle (13) présentant deux parois latérales parallèles dont les faces internes comportent des paires opposées d'éléments de positionnement (14) de barrette pour permettre de relier une extrémité du bracelet à l'une desdites paires d'éléments de positionnement (14).Clasp according to claim 3, wherein said connecting piece (9) comprises a third connecting axis (11) for a cover (13) having two parallel side walls whose inner faces comprise opposite pairs of positioning elements (14). ) of bar to allow to connect one end of the bracelet to one of said pairs of positioning elements (14). Fermoir selon la revendication 5, dans lequel des moyens de butées (9a) servent à bloquer l'amplitude de pivotement dudit couvercle (13) par rapport à ladite pièce de liaison (9).Clasp according to claim 5, wherein stop means (9a) serve to block the pivoting amplitude of said cover (13) relative to said connecting piece (9). Fermoir selon la revendication 6, dans lequel, une portion dudit levier (12) située, en position d'accrochage, du côté dirigé vers l'axe d'articulation (3) desdites branches (1, 2) par rapport à l'axe d'articulation (10) dudit levier (9), s'étend sous ledit couvercle (13), qui sert de moyens de butée pour limiter le pivotement dudit levier (12) autour de son axe d'articulation (10) sous l'effet dudit couple, dans une position correspondant à l'engagement dudit crochet (17) avec ledit élément d'accrochage (4), le couple transmis par le levier (12) au couvercle (13) par l'intermédiaire de ladite pièce de liaison (9) tendant à appliquer celui-ci en direction du bracelet.Clasp according to claim 6, wherein, a portion of said lever (12) located, in the attachment position, on the side directed towards the hinge axis (3) of said branches (1, 2) with respect to the axis articulation (10) of said lever (9), extends under said cover (13), which serves as stop means for limiting the pivoting of said lever (12) about its hinge axis (10) under the effect of said torque, in a position corresponding to the engagement of said hook (17) with said hooking element (4), the torque transmitted by the lever (12) to the cover (13) via said connecting piece (9) tending to apply it in the direction of the bracelet. Fermoir selon l'une des revendications 5 à 7, dans lequel un second couvercle (7) est monté pivotant autour d'un axe (5) parallèle à l'axe d'articulation (3) desdites branches (1, 2) à l'extrémité libre de ladite branche (1) comportant un élément d'accrochage (4) conformé pour permettre audit crochet (17) de venir en prise avec lui, pour qu'en position rabattue en direction du premier couvercle (13), le second couvercle (7) recouvre ledit levier (12) et tend à s'opposer à l'ouverture de celui-ci.Clasp according to one of claims 5 to 7, wherein a second cover (7) is pivotally mounted about an axis (5) parallel to the axis of articulation (3) of said branches (1, 2) to the free end of said leg (1) having a hooking element (4) shaped to allow said hook (17) to engage with it, so that in the folded position towards the first cover (13), the second cover (7) covers said lever (12) and tends to oppose the opening thereof. Fermoir selon la revendication 8, dans lequel, l'axe d'articulation (10) dudit levier (12) présente deux extrémités rétractables de manière élastique, qui font saillie latéralement et servent à venir en prise respectivement avec deux empreintes (7a) ménagées sur deux faces latérales opposées dudit second couvercle (7) pour le maintenir en position rabattue en direction du premier couvercle (13) sur ledit levier (12).Clasp according to claim 8, wherein, the hinge axis (10) of said lever (12) has two ends resiliently retractable, which project laterally and serve to engage respectively with two indentations (7a) provided on two opposite side faces of said second cover (7) to hold it in the folded position towards the first cover (13) on said lever (12). Fermoir selon l'une des revendications précédentes, dans lequel l'angle avec lequel la trajectoire décrite par la surface d'accrochage dudit crochet de verrouillage (17, 27, 33c) autour de l'axe d'articulation (10, 20, 32) du levier (12, 22, 33) coupe la trajectoire desdites branches (1, 2) autour de leur axe d'articulation (3) est au moins égal à 60° et la surface d'accrochage dudit crochet de verrouillage (17, 27, 33c) est conformée pour qu'en position d'accrochage, la réaction à une force tendant à séparer lesdites branches articulées passe par l'axe d'articulation (10, 20, 32) dudit crochet de verrouillage (17, 27, 33c).Clasp according to one of the preceding claims, wherein the angle with which the trajectory described by the attachment surface of said locking hook (17, 27, 33c) around the hinge axis (10, 20, 32 ) of the lever (12, 22, 33) intersects the path of said legs (1, 2) about their hinge axis (3) is at least 60 ° and the hooking surface of said locking hook (17, 27, 33c) is shaped so that in the latching position, the reaction to a force tending to separate said articulated branches passes through the articulation axis (10, 20, 32) of said locking hook (17, 27, 33c).
EP04405673A 2004-11-03 2004-11-03 Bracelet fastener Active EP1654950B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE04405673T DE04405673T1 (en) 2004-11-03 2004-11-03 strap closure
DE602004011525T DE602004011525T2 (en) 2004-11-03 2004-11-03 strap closure
EP04405673A EP1654950B1 (en) 2004-11-03 2004-11-03 Bracelet fastener
US11/248,904 US7124478B2 (en) 2004-11-03 2005-10-11 Bracelet clasp
JP2005312791A JP4768395B2 (en) 2004-11-03 2005-10-27 Bracelet clasp
CN2005101186600A CN1768637B (en) 2004-11-03 2005-11-01 Bracelet clasp
HK06106144A HK1084839A1 (en) 2004-11-03 2006-05-26 Bracelet fastener

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04405673A EP1654950B1 (en) 2004-11-03 2004-11-03 Bracelet fastener

Publications (2)

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EP1654950A1 true EP1654950A1 (en) 2006-05-10
EP1654950B1 EP1654950B1 (en) 2008-01-23

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EP04405673A Active EP1654950B1 (en) 2004-11-03 2004-11-03 Bracelet fastener

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US (1) US7124478B2 (en)
EP (1) EP1654950B1 (en)
JP (1) JP4768395B2 (en)
CN (1) CN1768637B (en)
DE (2) DE04405673T1 (en)
HK (1) HK1084839A1 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008064931A1 (en) * 2006-12-01 2008-06-05 Tag Heuer Sa Bracelet clasp with length adjustment device
EP2502516A1 (en) 2011-03-21 2012-09-26 Omega SA Bracelet clasp
RU2465793C1 (en) * 2011-07-15 2012-11-10 Общество с ограниченной ответственностью "Константин Чайкин" Clasp of watch bracelet, watch bracelet with clasp and watch with bracelet with clasp
EP2644050A1 (en) 2012-03-27 2013-10-02 Rolex S.A. Opening clasp for bracelet
EP2721943A1 (en) 2012-10-16 2014-04-23 Rolex Sa Resilient joint for clockwork assembly
EP2875747A1 (en) * 2013-11-25 2015-05-27 Dexel S.A. Bracelet clasp comprising a device for adjusting the useful length of the bracelet
CN103767256B (en) * 2012-10-16 2016-11-30 劳力士有限公司 The elastic hinge joint of clock and watch assembly
EP3420839A1 (en) 2017-06-26 2019-01-02 Rolex Sa Clasp for wristwatch
EP3777599A1 (en) 2019-08-16 2021-02-17 Rolex Sa Resilient joint for clockwork assembly
EP3928652A1 (en) 2020-06-23 2021-12-29 Rolex Sa Locking device for a bracelet clasp
US11627785B2 (en) 2018-12-10 2023-04-18 Patek Philippe Sa Geneve Device for finely adjusting the length of a bracelet and a bracelet comprising at least one such device

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE06405427T1 (en) * 2006-10-06 2008-10-09 Rolex Sa strap closure
EP2502515B1 (en) * 2011-03-21 2013-09-04 The Swatch Group Management Services AG Bracelet clasp
EP2630887A1 (en) * 2012-02-23 2013-08-28 CK Montres & Bijoux Co., S.A. Wristwatch provided with a clasp
TWD168277S (en) * 2014-01-30 2015-06-11 葛拉夏特鐘錶企業有限公司 Watch case
US10130131B2 (en) * 2015-01-08 2018-11-20 Yang-Seog Ryou Controller, band, and band adjusting device including the controller and the band
EP3329796B1 (en) 2016-12-05 2019-07-10 Rolex Sa Device for adjusting the comfort of the length of a bracelet
EP3329797B1 (en) * 2016-12-05 2020-07-01 Rolex Sa Device for adjusting the length of a bracelet
EP3769640B1 (en) * 2019-07-26 2022-03-30 Omega SA Watch strap clasp

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB632119A (en) * 1946-01-11 1949-11-16 Bedri Hussein Gostkowski Improvements in or relating to clasps, for a band, more particularly but not exclusively for a bracelet of a wrist watch
US5689861A (en) * 1994-03-22 1997-11-25 Etablissements Sarran S.A. Strap clasp
CH689931A5 (en) * 1995-12-18 2000-02-15 Renato Poli Clasp for watch bracelet

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
CH690116A5 (en) * 1996-07-17 2000-05-15 Rolex Montres Device for adjusting the length of a wristband with a clasp with unfolding blades.
FR2751516B1 (en) * 1996-07-25 1998-09-04 Smh Management Services Ag DEPLOYMENT BUCKLE CLASP
EP0865742B1 (en) * 1997-03-22 2003-06-11 Rolex Sa Foldable fastener for a bracelet
US6324735B1 (en) * 2000-01-21 2001-12-04 Chin-Tsug Chen Buckle device for skate boots
DE1201149T1 (en) * 2000-10-26 2003-01-09 Rolex Montres strap closure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB632119A (en) * 1946-01-11 1949-11-16 Bedri Hussein Gostkowski Improvements in or relating to clasps, for a band, more particularly but not exclusively for a bracelet of a wrist watch
US5689861A (en) * 1994-03-22 1997-11-25 Etablissements Sarran S.A. Strap clasp
CH689931A5 (en) * 1995-12-18 2000-02-15 Renato Poli Clasp for watch bracelet

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7926150B2 (en) 2006-12-01 2011-04-19 Lvmh Swiss Manufactures Sa Bracelet clasp with length-adjustment device
WO2008064931A1 (en) * 2006-12-01 2008-06-05 Tag Heuer Sa Bracelet clasp with length adjustment device
US8561263B2 (en) 2011-03-21 2013-10-22 Omega Sa Bracelet clasp
EP2502516A1 (en) 2011-03-21 2012-09-26 Omega SA Bracelet clasp
RU2465793C1 (en) * 2011-07-15 2012-11-10 Общество с ограниченной ответственностью "Константин Чайкин" Clasp of watch bracelet, watch bracelet with clasp and watch with bracelet with clasp
US9282792B2 (en) 2012-03-27 2016-03-15 Rolex Sa Fold-over clasp for a bracelet
EP2644050A1 (en) 2012-03-27 2013-10-02 Rolex S.A. Opening clasp for bracelet
CN103767256B (en) * 2012-10-16 2016-11-30 劳力士有限公司 The elastic hinge joint of clock and watch assembly
CN103767256A (en) * 2012-10-16 2014-05-07 劳力士有限公司 Elastic articulation for horological assembly
US9635911B2 (en) 2012-10-16 2017-05-02 Rolex Sa Elastic articulation for horological assembly
EP2721943A1 (en) 2012-10-16 2014-04-23 Rolex Sa Resilient joint for clockwork assembly
WO2015075253A1 (en) * 2013-11-25 2015-05-28 Dexel S.A. Bracelet clasp comprising a device for fine adjustment of the useful length of the bracelet
EP2875747A1 (en) * 2013-11-25 2015-05-27 Dexel S.A. Bracelet clasp comprising a device for adjusting the useful length of the bracelet
EP3420839A1 (en) 2017-06-26 2019-01-02 Rolex Sa Clasp for wristwatch
US10791806B2 (en) 2017-06-26 2020-10-06 Rolex Sa Clasp for wristwatch
US11627785B2 (en) 2018-12-10 2023-04-18 Patek Philippe Sa Geneve Device for finely adjusting the length of a bracelet and a bracelet comprising at least one such device
EP3777599A1 (en) 2019-08-16 2021-02-17 Rolex Sa Resilient joint for clockwork assembly
US11707118B2 (en) 2019-08-16 2023-07-25 Rolex Sa Elastic articulation for a watch assembly
EP3928652A1 (en) 2020-06-23 2021-12-29 Rolex Sa Locking device for a bracelet clasp
US11963589B2 (en) 2020-06-23 2024-04-23 Rolex Sa Locking device for a wristlet clasp

Also Published As

Publication number Publication date
DE602004011525D1 (en) 2008-03-13
JP2006130312A (en) 2006-05-25
DE04405673T1 (en) 2006-11-16
HK1084839A1 (en) 2006-08-11
CN1768637A (en) 2006-05-10
US20060090305A1 (en) 2006-05-04
EP1654950B1 (en) 2008-01-23
DE602004011525T2 (en) 2008-07-31
CN1768637B (en) 2010-12-29
JP4768395B2 (en) 2011-09-07
US7124478B2 (en) 2006-10-24

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