EP2725937B1 - Extendable clasp for a bracelet in particular for a watch - Google Patents

Extendable clasp for a bracelet in particular for a watch Download PDF

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Publication number
EP2725937B1
EP2725937B1 EP12741075.1A EP12741075A EP2725937B1 EP 2725937 B1 EP2725937 B1 EP 2725937B1 EP 12741075 A EP12741075 A EP 12741075A EP 2725937 B1 EP2725937 B1 EP 2725937B1
Authority
EP
European Patent Office
Prior art keywords
pivoting
clasp
bracelet
attachment body
strip
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.)
Not-in-force
Application number
EP12741075.1A
Other languages
German (de)
French (fr)
Other versions
EP2725937A1 (en
Inventor
Georges Leger
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.)
Thi Technologies Horlogere Industrielle Sa
Original Assignee
Thi Technologies Horlogere Industrielle 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.)
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Publication date
Application filed by Thi Technologies Horlogere Industrielle Sa filed Critical Thi Technologies Horlogere Industrielle Sa
Publication of EP2725937A1 publication Critical patent/EP2725937A1/en
Application granted granted Critical
Publication of EP2725937B1 publication Critical patent/EP2725937B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
    • A44C5/18—Fasteners for straps, chains or the like
    • A44C5/22—Fasteners for straps, chains or the like for closed straps
    • A44C5/24—Fasteners for straps, chains or the like for closed straps with folding devices
    • A44C5/246—Fasteners for straps, chains or the like for closed straps with folding devices having size adjusting means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/21—Strap tighteners
    • Y10T24/2143—Strap-attached folding lever
    • Y10T24/2155—Jewelry-watch straps

Definitions

  • the present invention relates to the field of bracelets, especially for watches. It relates more particularly to a clasp bracelet with folding clasp for precise adjustment of the length of the bracelet.
  • the clasps with folding clasp are well known for their aesthetic appearance. These clasps are often associated with bracelets made of links.
  • the adjustment of the length of the bracelet is generally performed in this case at the retailer by adding or removing one or more links depending on the size of the wearer's wrist. This adjustment is generally definitive and does not take into account the differences in the wrist circumference as a function of the ambient heat and / or according to the efforts made by the wearer.
  • the device disclosed in the publication US5927577 comprises a tip whose one end is articulated at one end of one of the strands of the bracelet, the other end of the tip being equipped with a rod which can be positioned inside a cover in different orifices arranged along the lateral sides of the latter.
  • the major disadvantage of this device comes from the fact that it is necessary to open the clasp to adjust the length of the bracelet.
  • JP59108411 is directed to a clasp for a two-blade deblocking loop having a first and a second blade hinged relative to each other at a first end and a hinged cowl at a second end of the first blade, the hood being connected to a first strand of the bracelet.
  • a substantially rectangular opening extends along the longitudinal axis of the second blade. The longitudinal sides of this opening are provided with a notched portion arranged to cooperate with locking means, which are integral with a support of the folding clasp, the support being connected to a second strand of the bracelet.
  • the locking means comprise two locking elements intended to be positioned in one of the notches of each notched portion of the opening of the second blade to lock it with respect to the blade holder in a desired indexed position.
  • the locking means further comprise a pusher whose actuation allows to release each blocking element of the corresponding notched portion in order to adjust the length of the bracelet.
  • Each locking member is then positioned in another one of the notches of the one and the other notched portions when the pusher is no longer actuated to lock the second blade with respect to the blade support in another indexed position.
  • EP1716776 discloses a device for adjusting the length of a bracelet which is intended to remedy in particular the problem referred to above.
  • This device comprises a lid inside which is slidable articulated tip at one end of the bracelet.
  • This tip comprises means for prepositioning and locking in position cooperating with a release system for adjusting the length of the bracelet without having to open said bracelet.
  • this adjustment device is intended to be mounted on rigid bracelets with links or the ends are subject to a clasp foldable articulated blades.
  • This device is not suitable for leather bracelets or other flexible material which one of the strands is intended to be arranged in a passing assembly provided with a pin for a coarse adjustment of the length of the bracelet.
  • the publication EP1378185 offers a clasp folding clasp with two blades that solves the aforementioned problems.
  • the two blades of this clasp are articulated with respect to one another at one of their ends while the other of their ends are respectively connected to a cover connected to one of the strands of a bracelet and to a movable tip connected to the other strands of the bracelet.
  • the movable tip is arranged inside a receptacle inside which are mounted indexing means for adjusting the length of the bracelet.
  • These indexing means comprise two locking elements arranged to cooperate each with a notched tooth-shaped portion located along the inner side walls of the receptacle.
  • Two pushers disposed on the outer lateral sides of the receptacle allow, when actuated, to release the locking elements of the notched parts in order to adjust the length of the bracelet.
  • the object of the present invention is to propose a different version of an extensible bracelet clasp which has the advantage of providing precise adjustment of the length of the bracelet when the clasp is in the closed position and which can easily be adapted to be mounted on a link bracelet or to cook.
  • this object is achieved by means of a clasp with a folding clasp for a bracelet enabling the length of the bracelet to be adjusted.
  • This clasp comprises: a central support; a first and a second pivoting blade hinged to the respective ends of the central support and capable of falling back on the latter; closing and opening means of the clasp arranged to lock the first and second swivel blades against the central support and to unlock said first and second swivel blades of the central support so that they can be deployed; at least one of a first fastener secured to the first pivoting blade, and arranged to be connected to a first strand of the bracelet and a second fastener secured to the second pivoting blade, and arranged to be connected to a second strand of the bracelet .
  • the clasp according to the invention further comprises a fastener body arranged on at least one of the first and second pivoting blades.
  • the or each first and second fastener is connected to the corresponding fastener body, which is movable in the direction of the length of the corresponding pivoting blade to be locked in different positions along said blade.
  • the or each pivoting blade (2a, 2b) comprises a pull tab (7) arranged to cooperate with the corresponding fastening body (4), the pull tab (7) being able to occupy respectively a first and a second axial position so that the or each fastener body (4) can be locked in one of the different axial positions, and so that the or each fastener body (4) can be unlocked in order to to be able to slide inside the corresponding recess (5) to occupy another indexed position when the pull tab (7) is in the other of the first and second axial positions, the pull tab (7) is arranged to pass through the longitudinal edges (2, 2 ') of the or each pivoting blade (2a, 2b) and the attachment body (4) along an axis perpendicular to the direction of movement of said body (4).
  • this clasp allows adjustment of the useful length of a bracelet.
  • this clasp is of the three-leaf clasp type and comprises for this purpose a first and a second pivoting blade 2a, 2b articulated at the respective ends of a central support 1 about an axis 3 so that they can be folded down and locked against this support 1 .
  • It is of elongated shape in the longitudinal direction of the bracelet and slightly curved to better fit the shape of the wrist of a wearer.
  • Each pivoting blade 2a, 2b has a recess 5 of rectangular shape in which is disposed a fastener body 4.
  • the latter comprises at one end a loop 6a, 6b for receiving a bar respectively of a first and a second strand forming the bracelet (not shown).
  • Each attachment body 4 is arranged to be actuated in translation inside the recess 5 along the longitudinal edges 2, 2 'of each pivoting blade 2a, 2b so that it can be locked in different positions indexed with respect to the corresponding pivoting blade by means of a locking device.
  • each attachment body 4 has a pull tab 7 connected to each pivoting blade 2a, 2b and arranged to cooperate with the corresponding fastening body 4.
  • the pull tab 7 is capable of occupying respectively a first and a second axial position.
  • the attachment body 4 is locked in one of the different indexed positions while the body 4 is unlocked in translation when the pull tab 7 is in the other of its two axial positions.
  • the fastener body 4 can slide inside the recess 5 along the longitudinal edges 2, 2 'of the corresponding pivoting blade 2a, 2b to occupy another indexed position.
  • the pull tab 7 is arranged to traverse the longitudinal edges 2, 2 'of each pivoting blade 2a, 2b and the fastening body 4 along an axis perpendicular to the displacement of said body 4.
  • the latter comprises for this purpose an elongate opening 8 ( Figure 10 ) whose thickness is slightly greater than the diameter of the central portion of the pull tab 7 to allow movement of the body 4 within the recess 5 of the pivoting blade.
  • the lower and upper part of the opening 8 each preferably comprises three recesses 9a, 9b and 9c as illustrated in particular by the figures 8 and 12 .
  • These recesses are intended to receive a bulge 7a located on one of the sides of the central part of the pull tab 7 when it is in one of its two axial positions ( Figure 7 ) thereby blocking the fastening body 4 with respect to the pivoting blade.
  • the bulge 7a is disengaged from the body 4 when the pull tab 7 is in the other of its two axial positions so that said body 4 can be moved relative to the pivoting blade in another indexed position.
  • the two ends of the pull tab 7 serve as pushers, a pressure on one or the other of its ends to bring the pull tab 7 in one or other of its two axial positions.
  • a pawl 10 is arranged in each of the two longitudinal edges 2, 2 'of each pivoting blade 2a, 2b to cooperate preferably with three cores 11 located on the corresponding fastening body 4. These pawls 10 have the function of pre-positioning each body 4 in one of the various indexed positions before moving the corresponding pull tab 7 from one to the other of its two axial positions in order to lock the fastener body to the corresponding pivoting blade.
  • the central support 1 of the clasp has two lateral structures 12, 12 'whose inner sides have cutouts 13 intended to receive one or the other of the end of the pull tab 7 of each pivoting blade 2a, 2b when those are folded to be locked against said support 1.
  • the locking / unlocking means of the pivoting blades 2a, 2b comprise two pushers 14 arranged on either side of the central support 1 partially inside a housing 15.
  • Two compression springs 16 are disposed in each housing 15 against the pusher 14 corresponding and on both sides of two rods 17 connected to the pusher.
  • each pusher 14 extends inside two orifices 18 made in each lateral structure 12, 12 'of the central support 1 to be connected to a stud 19 by means of a pin 20.
  • the two studs 19 are arranged above a rectangular plate 21 which connects the two lateral structures 12, 12 'and cooperate with retaining means 22 arranged at one end of the first and second pivoting blades 2a, 2b in order to lock them against the support central 1.
  • These pads 19 are arranged to move along the plate 21 against each other in a direction perpendicular to the longitudinal axis of the pivoting blades when the two pushers 14 are actuated simultaneously so that said pads 19 are released retaining means 22 pivoting blades 2a, 2b so that they can be deployed.
  • each pad 19 has on two opposite faces a triangular prism 23 oriented so that one of its faces is arranged in a plane at 45 ° relative to the base of the pad.
  • the prisms 23 of each stud 19 come into contact with chamfers 24 ( Figure 8 ) located on the pivoting blades 2a, 2b when they are folded on the central support 1.
  • a pressure exerted on the end of each blade moves the pads 19 until each prism 23 is in front of a notch 22, in which it is introduced under the action of the compression springs 16 of each pusher 14 thus locking the blades against the support 1.
  • the respective prisms 23 are disengaged from the corresponding notches 22 when the two pushers 14 are actuated simultaneously in order to allow the deployment of the pivoting blades 2a, 2b.
  • the invention is not limited to the embodiment described above by way of example but it includes all the embodiments covered by the claims.
  • the means for allowing the extension or the shortening of the bracelet can be arranged only on one of the pivoting blades, the other pivoting blade being configured to be connected to a strand of the bracelet by any type of system. attachment.

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  • Buckles (AREA)

Description

La présente invention se rapporte au domaine des bracelets, notamment pour montres. Elle concerne plus particulièrement un fermoir de bracelet à boucle déployante permettant un réglage précis de la longueur du bracelet.The present invention relates to the field of bracelets, especially for watches. It relates more particularly to a clasp bracelet with folding clasp for precise adjustment of the length of the bracelet.

Les fermoirs à boucle déployante sont bien connus pour leur aspect esthétique. Ces fermoirs sont souvent associés à des bracelets constitués de maillons. Le réglage de la longueur du bracelet est généralement effectué dans ce cas chez le détaillant par l'ajout ou le retrait d'un ou plusieurs maillons en fonction de la taille du poignet du porteur. Ce réglage est généralement définitif et ne tient pas compte des différences du pourtour du poignet en fonction de la chaleur ambiante et/ou suivant les efforts faits par le porteur. Or, on constate qu'on éprouve souvent le besoin de procéder à un tel ajustement, car les dimensions du poignet changent selon que la température ambiante est basse ou élevée. Sans réglage possible, le bracelet peut étrangler le poignet aux températures chaudes de l'été. Inversement, en hiver, ce même bracelet à tendance à tourner autour du poignet.The clasps with folding clasp are well known for their aesthetic appearance. These clasps are often associated with bracelets made of links. The adjustment of the length of the bracelet is generally performed in this case at the retailer by adding or removing one or more links depending on the size of the wearer's wrist. This adjustment is generally definitive and does not take into account the differences in the wrist circumference as a function of the ambient heat and / or according to the efforts made by the wearer. However, we note that we often feel the need to make such an adjustment, because the wrist dimensions change depending on whether the ambient temperature is low or high. Without adjustment, the bracelet can strangle the wrist at the hot summer temperatures. Conversely, in winter, this same bracelet tends to turn around the wrist.

Il existe plusieurs bracelets de montre dotés d'un système permettant au porteur de la montre d'ajuster lui-même la longueur du bracelet de quelques millimètres seulement en fonction des circonstances. De tels fermoirs sont décrits notamment dans les publications US5927577 , JP59108411 , EP1716776 EP1378185 , EP1943917 , EP1920673 ou encore WO2008064931 .There are several watchbands with a system allowing the wearer of the watch to adjust itself the length of the bracelet a few millimeters only depending on the circumstances. Such clasps are described in particular in the publications US5927577 , JP59108411 , EP1716776 EP1378185 , EP1943917 , EP1920673 or WO2008064931 .

A titre d'exemple, le dispositif divulgué dans la publication US5927577 comporte un embout dont l'une des extrémités est articulée à une extrémité d'un des brins du bracelet, l'autre extrémité de l'embout étant équipée d'une tige susceptible d'être positionnée à l'intérieur d'un couvercle dans différents orifices agencés le long des côtés latéraux de ce dernier. L'inconvénient majeur de ce dispositif provient du fait qu'il est nécessaire d'ouvrir le fermoir pour ajuster la longueur du bracelet.For example, the device disclosed in the publication US5927577 comprises a tip whose one end is articulated at one end of one of the strands of the bracelet, the other end of the tip being equipped with a rod which can be positioned inside a cover in different orifices arranged along the lateral sides of the latter. The major disadvantage of this device comes from the fact that it is necessary to open the clasp to adjust the length of the bracelet.

JP59108411 porte sur un fermoir pour boucle débloyante à deux lames comportant une première et une seconde lame articulées l'une par rapport à l'autre à une première extrémité et un capot articulé à une seconde extrémité de la première lame, le capot étant relié à un premier brin du bracelet. Une ouverture substantiellement rectangulaire s'étend le long de l'axe longitudinal de la seconde lame. Les côtés longitudinaux de cette ouverture sont pourvus d'une partie crantée agencée pour coopérer avec des moyens de blocage, lesquels sont solidaires d'un support de la boucle déployante, le support étant relié à un second brin du bracelet. Les moyens de blocage comportent deux éléments de blocage destinés à venir se positionner dans l'un des crans de chaque partie crantée de l'ouverture de la seconde lame afin de bloquer celle-ci par rapport au support de lame dans une position indexée souhaitée. Les moyens de blocage comportent par ailleurs un poussoir dont l'actionnement permet de dégager chaque élément de blocage de la partie crantée correspondante afin de pouvoir ajuster la longueur du bracelet. Chaque élément de blocage est ensuite positionné dans un autre des crans de l'une et l'autre des parties crantées lorsque le poussoir n'est plus actionné afin de bloquer la seconde lame par rapport au support de lame dans une autre position indexée. A l'instar de la publication US5927577 , il est nécessaire d'ouvrir le fermoir pour ajuster la longueur du bracelet, ce qui complique la manipulation. JP59108411 is directed to a clasp for a two-blade deblocking loop having a first and a second blade hinged relative to each other at a first end and a hinged cowl at a second end of the first blade, the hood being connected to a first strand of the bracelet. A substantially rectangular opening extends along the longitudinal axis of the second blade. The longitudinal sides of this opening are provided with a notched portion arranged to cooperate with locking means, which are integral with a support of the folding clasp, the support being connected to a second strand of the bracelet. The locking means comprise two locking elements intended to be positioned in one of the notches of each notched portion of the opening of the second blade to lock it with respect to the blade holder in a desired indexed position. The locking means further comprise a pusher whose actuation allows to release each blocking element of the corresponding notched portion in order to adjust the length of the bracelet. Each locking member is then positioned in another one of the notches of the one and the other notched portions when the pusher is no longer actuated to lock the second blade with respect to the blade support in another indexed position. Like the publication US5927577 , it is necessary to open the clasp to adjust the length of the bracelet, which complicates handling.

EP1716776 divulgue un dispositif de réglage de la longueur d'un bracelet qui a pour but de remédier notamment au problème susvisé. Ce dispositif comporte un couvercle à l'intérieur duquel est susceptible de coulisser un embout articulé à une extrémité du bracelet. Cet embout comporte des moyens de prépositionnement et de blocage en position coopérant avec un système de débrayage permettant le réglage de la longueur du bracelet sans être obligé d'ouvrir ledit bracelet. Selon l'enseignement de EP1716776 ce dispositif de réglage est destiné à être monté sur des bracelets rigides à maillons ou les extrémités sont assujetties à un fermoir à lames articulées dépliables. Ce dispositif n'est donc pas adapté pour des bracelets en cuir ou d'une autre matière flexible dont l'un des brins est destiné à être agencé dans un ensemble passant pourvu d'un ardillon pour un réglage grossier de la longueur du bracelet. EP1716776 discloses a device for adjusting the length of a bracelet which is intended to remedy in particular the problem referred to above. This device comprises a lid inside which is slidable articulated tip at one end of the bracelet. This tip comprises means for prepositioning and locking in position cooperating with a release system for adjusting the length of the bracelet without having to open said bracelet. According to the teaching of EP1716776 this adjustment device is intended to be mounted on rigid bracelets with links or the ends are subject to a clasp foldable articulated blades. This device is not suitable for leather bracelets or other flexible material which one of the strands is intended to be arranged in a passing assembly provided with a pin for a coarse adjustment of the length of the bracelet.

La publication EP1378185 propose un fermoir à boucle déployante à deux lames qui résout les problèmes susvisés. Les deux lames de ce fermoir sont articulées l'une par rapport à l'autre à l'une de leurs extrémités alors que l'autre de leurs extrémités sont connectées respectivement à un capot connecté à un des brins d'un bracelet et à un embout mobile connecté à l'autre des brins du bracelet. L'embout mobile est agencé à l'intérieur d'un réceptacle à l'intérieur duquel sont montés des moyens d'indexation pour régler la longueur du bracelet. Ces moyens d'indexation comportent deux éléments de blocage agencés pour coopérer chacun avec une partie crantée en forme de dents de scie située le long des flancs latéraux interne du réceptacle. Deux poussoirs disposés sur les flancs latéraux externes du réceptacle permettent, lorsqu'ils sont actionnés, de dégager les éléments de blocage des parties crantés afin de pouvoir régler la longueur du bracelet.The publication EP1378185 offers a clasp folding clasp with two blades that solves the aforementioned problems. The two blades of this clasp are articulated with respect to one another at one of their ends while the other of their ends are respectively connected to a cover connected to one of the strands of a bracelet and to a movable tip connected to the other strands of the bracelet. The movable tip is arranged inside a receptacle inside which are mounted indexing means for adjusting the length of the bracelet. These indexing means comprise two locking elements arranged to cooperate each with a notched tooth-shaped portion located along the inner side walls of the receptacle. Two pushers disposed on the outer lateral sides of the receptacle allow, when actuated, to release the locking elements of the notched parts in order to adjust the length of the bracelet.

Le but de la présente invention est de proposer une version différente d'un fermoir extensible pour bracelet qui à l'avantage d'offrir un réglage précis de la longueur du bracelet lorsque le fermoir est en position fermée et qui peut facilement être adapté pour être monté sur un bracelet à maillons ou en cuire.The object of the present invention is to propose a different version of an extensible bracelet clasp which has the advantage of providing precise adjustment of the length of the bracelet when the clasp is in the closed position and which can easily be adapted to be mounted on a link bracelet or to cook.

Conformément à l'invention, ce but est atteint grâce à un fermoir à boucle déployante pour bracelet permettant un réglage de la longueur du bracelet. Ce fermoir comporte: un support central; une première et une seconde lame pivotante articulées aux extrémités respectives du support central et susceptibles de se rabattre sur ce dernier; des moyens de fermeture et d'ouverture du fermoir agencés de manière à verrouiller la première et la seconde lame pivotante contre le support central et à déverrouiller lesdites première et seconde lame pivotante du support central pour qu'elles puissent être déployées; au moins une d'une première attache solidaire de la première lame pivotante, et agencée pour être reliée à un premier brin du bracelet et d'une seconde attache solidaire de la seconde lame pivotante, et agencée pour être reliée à un second brin du bracelet. Le fermoir selon l'invention comporte en outre un corps d'attache agencé sur au moins une des première et seconde lames pivotantes. La ou chaque première et seconde attache est connectée au corps d'attache correspondant, lequel est susceptible de se déplacer dans le sens de la longueur de la lame pivotante correspondante pour être verrouillé dans différentes positions le long de ladite lame. La ou chaque lame pivotante (2a, 2b) comporte une tirette (7) agencée pour coopérer avec le corps d'attache (4) correspondant, la tirette (7) étant susceptible d'occuper respectivement une première et une seconde position axiale de manière à ce que le ou chaque corps d'attache (4) puisse être verrouillé dans une des différentes positions axiales, et de manière à ce que le ou chaque corps d'attache (4) puisse être déverrouillé afin de pouvoir coulisser à l'intérieur de l'évidement (5) correspondant pour occuper une autre position indexée lorsque la tirette (7) se trouve dans l'autre des première et seconde positions axiales, la tirette (7) est agencée pour traverser les bords longitudinaux (2, 2') de la ou de chaque lame pivotante (2a, 2b) ainsi que le corps d'attache (4) selon un axe perpendiculaire au sens de déplacement dudit corps (4).According to the invention, this object is achieved by means of a clasp with a folding clasp for a bracelet enabling the length of the bracelet to be adjusted. This clasp comprises: a central support; a first and a second pivoting blade hinged to the respective ends of the central support and capable of falling back on the latter; closing and opening means of the clasp arranged to lock the first and second swivel blades against the central support and to unlock said first and second swivel blades of the central support so that they can be deployed; at least one of a first fastener secured to the first pivoting blade, and arranged to be connected to a first strand of the bracelet and a second fastener secured to the second pivoting blade, and arranged to be connected to a second strand of the bracelet . The clasp according to the invention further comprises a fastener body arranged on at least one of the first and second pivoting blades. The or each first and second fastener is connected to the corresponding fastener body, which is movable in the direction of the length of the corresponding pivoting blade to be locked in different positions along said blade. The or each pivoting blade (2a, 2b) comprises a pull tab (7) arranged to cooperate with the corresponding fastening body (4), the pull tab (7) being able to occupy respectively a first and a second axial position so that the or each fastener body (4) can be locked in one of the different axial positions, and so that the or each fastener body (4) can be unlocked in order to to be able to slide inside the corresponding recess (5) to occupy another indexed position when the pull tab (7) is in the other of the first and second axial positions, the pull tab (7) is arranged to pass through the longitudinal edges (2, 2 ') of the or each pivoting blade (2a, 2b) and the attachment body (4) along an axis perpendicular to the direction of movement of said body (4).

Les caractéristiques de l'invention apparaîtront plus clairement à la lecture de la description d'une forme d'exécution préférentielle, donnée uniquement à titre d'exemple, nullement limitative en se référant aux figures schématiques, dans lesquelles:

  • La Figure 1 représente une vue éclatée du fermoir à boucle déployante pour bracelet de montre selon la forme d'exécution préférentielle de l'invention;
  • La Figure 2 représente une vue en perspective de dessous du fermoir lorsque les première et seconde lames pivotantes sont déployées;
  • La Figure 3 représente une vue de dessus du fermoir lorsque les première et seconde lames pivotantes sont rabattues sur le support central;
  • La Figure 4 représente une vue en coupe de la Figure 3 selon la coupe A-A dans laquelle la première et la seconde attache sont chacune dans une première position indexée;
  • La Figure 5 représente une vue de côté du fermoir dans laquelle la première et la seconde attache sont chacune dans une seconde position indexée;
  • La Figure 6 représente une vue en coupe de la Figure 3 selon la coupe H-H;
  • La Figure 7 représente une vue en coupe de la Figure 4 selon la coupe B-B;
  • La Figure 8 représente une vue éclatée d'une des lames pivotantes comportant le corps d'attache;
  • La Figure 9 représente une vue de dessus de lame pivotante assemblée de la Figure 8 lorsque le corps d'attache est dans une première position indexée;
  • La Figure 10 représente une vue en coupe de la Figure 9 selon la coupe C-C;
  • La Figure 11 représente une vue de dessus de la lame pivotante lorsque le corps d'attache est dans une seconde position indexée;
  • La Figure 12 représente une vue en coupe de la Figure 11 selon la coupe D-D.
The characteristics of the invention will appear more clearly on reading the description of a preferential embodiment, given solely for the purpose of for example, in no way limiting with reference to the schematic figures, in which:
  • The Figure 1 represents an exploded view of the clasp with a folding clasp for a watch strap according to the preferred embodiment of the invention;
  • The Figure 2 is a perspective view from below of the clasp when the first and second pivot blades are deployed;
  • The Figure 3 represents a top view of the clasp when the first and second pivoting blades are folded down on the central support;
  • The Figure 4 represents a sectional view of the Figure 3 according to the section AA in which the first and second fasteners are each in a first indexed position;
  • The Figure 5 is a side view of the clasp wherein the first and second fasteners are each in a second indexed position;
  • The Figure 6 represents a sectional view of the Figure 3 according to the HH section;
  • The Figure 7 represents a sectional view of the Figure 4 according to section BB;
  • The Figure 8 is an exploded view of one of the pivoting blades including the fastener body;
  • The Figure 9 represents a top view of assembled swivel blade of the Figure 8 when the attachment body is in a first indexed position;
  • The Figure 10 represents a sectional view of the Figure 9 according to section CC;
  • The Figure 11 represents a top view of the pivoting blade when the attachment body is in a second indexed position;
  • The Figure 12 represents a sectional view of the Figure 11 according to the DD section.

Le fermoir selon l'invention permet un réglage de la longueur utile d'un bracelet. Au vu notamment des Figures 1 à 3, ce fermoir est de type boucle déployante à trois lames et comporte à cet effet une première et une seconde lame pivotante 2a, 2b articulées aux extrémités respectives d'un support central 1 autour d'un axe 3 afin qu'elles puissent être rabattues et verrouillées contre ce support 1.. Celui-ci est de forme allongée suivant la direction longitudinale du bracelet et légèrement incurvée pour mieux épouser la forme du poignet d'un porteur.The clasp according to the invention allows adjustment of the useful length of a bracelet. In particular, Figures 1 to 3 this clasp is of the three-leaf clasp type and comprises for this purpose a first and a second pivoting blade 2a, 2b articulated at the respective ends of a central support 1 about an axis 3 so that they can be folded down and locked against this support 1 .. It is of elongated shape in the longitudinal direction of the bracelet and slightly curved to better fit the shape of the wrist of a wearer.

Chaque lame pivotante 2a, 2b possède un évidement 5 de forme rectangulaire dans lequel est disposé un corps d'attache 4. Celui-ci comporte à une extrémité une boucle 6a, 6b destinée à recevoir une barrette respectivement d'un premier et d'un second brin formant le bracelet (non illustré). Chaque corps d'attache 4 est agencé pour être actionné en translation à l'intérieur de l'évidement 5 le long des bords longitudinaux 2, 2' de chaque lame pivotante 2a, 2b afin de pouvoir être verrouillé dans différentes positions indexées par rapport à la lame pivotante correspondante au moyen d'un dispositif de verrouillage. Lorsque le fermoir selon l'invention est monté sur un bracelet et que les deux corps d'attache 4 sont déplacés le long de leur évidement respectif dans le sens de la longueur de la lame correspondante pour être verrouillé dans une position proche du centre du support 1 (Figure 4), la longueur du bracelet s'en trouve raccourcie alors que cette longueur s'en trouve allongée lorsque les corps d'attaches 4 sont déplacés en direction des bords latéraux du support central 1 (Figure 5).Each pivoting blade 2a, 2b has a recess 5 of rectangular shape in which is disposed a fastener body 4. The latter comprises at one end a loop 6a, 6b for receiving a bar respectively of a first and a second strand forming the bracelet (not shown). Each attachment body 4 is arranged to be actuated in translation inside the recess 5 along the longitudinal edges 2, 2 'of each pivoting blade 2a, 2b so that it can be locked in different positions indexed with respect to the corresponding pivoting blade by means of a locking device. When the clasp according to the invention is mounted on a bracelet and the two attachment bodies 4 are moved along their respective recess in the direction of the length of the corresponding blade to be locked in a position close to the center of the support 1 ( Figure 4 ), the length of the bracelet is shortened while this length is lengthened when the fastening bodies 4 are moved towards the lateral edges of the central support 1 ( Figure 5 ).

Le dispositif de verrouillage de chaque corps d'attache 4 possède une tirette 7 connectée à chaque lame pivotante 2a, 2b et agencée pour coopérer avec le corps d'attache 4 correspondant. La tirette 7 est susceptible d'occuper respectivement une première et une seconde position axiale. Lorsque la tirette 7 se trouve dans l'une de ses deux positions axiales, le corps d'attache 4 est verrouillé dans une des différentes positions indexées alors que ce corps 4 est déverrouillé en translation lorsque la tirette 7 se trouve dans l'autre de ses deux positions axiales. Dans cette dernière configuration, le corps d'attache 4 peut coulisser à l'intérieur de l'évidement 5 le long des bords longitudinaux 2, 2' de la lame pivotante 2a, 2b correspondante pour occuper une autre position indexée.The locking device of each attachment body 4 has a pull tab 7 connected to each pivoting blade 2a, 2b and arranged to cooperate with the corresponding fastening body 4. The pull tab 7 is capable of occupying respectively a first and a second axial position. When the pull tab 7 is in one of its two axial positions, the attachment body 4 is locked in one of the different indexed positions while the body 4 is unlocked in translation when the pull tab 7 is in the other of its two axial positions. In this latter configuration, the fastener body 4 can slide inside the recess 5 along the longitudinal edges 2, 2 'of the corresponding pivoting blade 2a, 2b to occupy another indexed position.

Plus particulièrement, en référence notamment aux Figures 7 et 8, la tirette 7 est agencée pour traverser les bords longitudinaux 2, 2' de chaque lame pivotante 2a, 2b ainsi que le corps d'attache 4 selon un axe perpendiculaire au déplacement dudit corps 4. Ce dernier comporte à cet effet une ouverture allongée 8 (Figure 10) dont l'épaisseur est légèrement supérieure au diamètre de la partie centrale de la tirette 7 afin de permettre le déplacement du corps 4 à l'intérieur de l'évidement 5 de la lame pivotante. La partie inférieure et supérieure de l'ouverture 8 comporte chacune de préférence trois creusures 9a, 9b et 9c telles qu'illustrées notamment par les figures 8 et 12. Ces creusures sont destinées à recevoir un renflement 7a situé sur l'un des côtés de la partie centrale de la tirette 7 lorsque celle-ci se trouve dans l'une des ses deux positions axiale (Figure 7) bloquant ainsi le corps d'attache 4 par rapport à la lame pivotante. Le renflement 7a est dégagé du corps 4 lorsque la tirette 7 se trouve dans l'autre de ses deux positions axiales afin que ledit corps 4 puisse être déplacé par rapport à la lame pivotante dans une autre position indexée. Les deux extrémités de la tirette 7 font office de poussoirs, une pression sur l'une ou l'autre de ses extrémités permettant d'amener la tirette 7 dans l'une ou l'autre de ses deux positions axiales.More particularly, with reference in particular to Figures 7 and 8 , the pull tab 7 is arranged to traverse the longitudinal edges 2, 2 'of each pivoting blade 2a, 2b and the fastening body 4 along an axis perpendicular to the displacement of said body 4. The latter comprises for this purpose an elongate opening 8 ( Figure 10 ) whose thickness is slightly greater than the diameter of the central portion of the pull tab 7 to allow movement of the body 4 within the recess 5 of the pivoting blade. The lower and upper part of the opening 8 each preferably comprises three recesses 9a, 9b and 9c as illustrated in particular by the figures 8 and 12 . These recesses are intended to receive a bulge 7a located on one of the sides of the central part of the pull tab 7 when it is in one of its two axial positions ( Figure 7 ) thereby blocking the fastening body 4 with respect to the pivoting blade. The bulge 7a is disengaged from the body 4 when the pull tab 7 is in the other of its two axial positions so that said body 4 can be moved relative to the pivoting blade in another indexed position. The two ends of the pull tab 7 serve as pushers, a pressure on one or the other of its ends to bring the pull tab 7 in one or other of its two axial positions.

Un cliquet 10 est agencé dans chacun des deux bords longitudinaux 2, 2' de chaque lame pivotante 2a, 2b pour coopérer de préférence avec trois noyures 11 situées sur le corps d'attache 4 correspondant. Ces cliquets 10 ont pour fonction de pré-positionner chaque corps 4 dans l'une des différentes positions indexées avant de déplacer la tirette 7 correspondante de l'une à l'autre de ses deux positions axiales afin de verrouiller le corps d'attache à la lame pivotante correspondante.A pawl 10 is arranged in each of the two longitudinal edges 2, 2 'of each pivoting blade 2a, 2b to cooperate preferably with three cores 11 located on the corresponding fastening body 4. These pawls 10 have the function of pre-positioning each body 4 in one of the various indexed positions before moving the corresponding pull tab 7 from one to the other of its two axial positions in order to lock the fastener body to the corresponding pivoting blade.

En se référant à nouveau aux Figures 1 à 3, le support central 1 du fermoir comporte deux structures latérales 12, 12' dont les flancs internes comportent des découpes 13 destinées à recevoir l'une ou l'autre de l'extrémité de la tirette 7 de chaque lame pivotante 2a, 2b lorsque celles-ci sont rabattues pour être verrouillées contre ledit support 1. Les moyens de verrouillage/déverrouillage des lames pivotantes 2a, 2b comportent deux poussoirs 14 agencés de part et d'autre du support central 1 partiellement à l'intérieur d'un logement 15. Deux ressorts de compression 16 sont disposés dans chaque logement 15 contre le poussoir 14 correspondant et de part et d'autre de deux tiges 17 connectées au poussoir. Les deux tiges 17 de chaque poussoir 14 se prolongent à l'intérieur de deux orifices 18 réalisés dans chaque structure latérale 12, 12' du support central 1 pour être connectées à un plot 19 au moyen d'une goupille 20. Les deux plots 19 sont agencés en dessus d'une plaque rectangulaire 21 qui relie les deux structures latérales 12, 12' et coopèrent avec des moyens de retenue 22 agencés à une extrémité de la première et seconde lames pivotantes 2a, 2b afin de verrouiller ces dernières contre le support central 1. Ces plots 19 sont agencés pour se déplacer le long de la plaque 21 l'un contre l'autre dans une direction perpendiculaire à l'axe longitudinal des lames pivotantes lorsque les deux poussoirs 14 sont actionnés simultanément afin que les dits plots 19 soient dégagés des moyens de retenue 22 des lames pivotantes 2a, 2b pour que celles-ci puissent être déployées.Referring again to Figures 1 to 3 , the central support 1 of the clasp has two lateral structures 12, 12 'whose inner sides have cutouts 13 intended to receive one or the other of the end of the pull tab 7 of each pivoting blade 2a, 2b when those are folded to be locked against said support 1. The locking / unlocking means of the pivoting blades 2a, 2b comprise two pushers 14 arranged on either side of the central support 1 partially inside a housing 15. Two compression springs 16 are disposed in each housing 15 against the pusher 14 corresponding and on both sides of two rods 17 connected to the pusher. The two rods 17 of each pusher 14 extend inside two orifices 18 made in each lateral structure 12, 12 'of the central support 1 to be connected to a stud 19 by means of a pin 20. The two studs 19 are arranged above a rectangular plate 21 which connects the two lateral structures 12, 12 'and cooperate with retaining means 22 arranged at one end of the first and second pivoting blades 2a, 2b in order to lock them against the support central 1. These pads 19 are arranged to move along the plate 21 against each other in a direction perpendicular to the longitudinal axis of the pivoting blades when the two pushers 14 are actuated simultaneously so that said pads 19 are released retaining means 22 pivoting blades 2a, 2b so that they can be deployed.

Plus précisément, chaque plot 19 possède sur deux faces opposées un prisme triangulaire 23 orienté de manière à ce qu'une de ses faces soit agencée dans un plan à 45° par rapport à la base du plot. Les prismes 23 de chaque plot 19 viennent en contact avec des chanfreins 24 (Figure 8) situés sur les lames pivotantes 2a, 2b lorsque celles-ci sont rabattues sur le support central 1. Une pression exercée sur l'extrémité de chaque lame permet de déplacer les plots 19 jusqu'à ce que chaque prisme 23 se trouve en face d'une encoche 22, dans laquelle il est introduit sous l'action des ressorts de compression 16 de chaque poussoir 14 verrouillant ainsi les lames contre le support 1. Les prismes respectifs 23 sont dégagés des encoches correspondantes 22 lorsque les deux poussoirs 14 sont actionnés simultanément afin de permettre le déploiement des lames pivotantes 2a, 2b.More specifically, each pad 19 has on two opposite faces a triangular prism 23 oriented so that one of its faces is arranged in a plane at 45 ° relative to the base of the pad. The prisms 23 of each stud 19 come into contact with chamfers 24 ( Figure 8 ) located on the pivoting blades 2a, 2b when they are folded on the central support 1. A pressure exerted on the end of each blade moves the pads 19 until each prism 23 is in front of a notch 22, in which it is introduced under the action of the compression springs 16 of each pusher 14 thus locking the blades against the support 1. The respective prisms 23 are disengaged from the corresponding notches 22 when the two pushers 14 are actuated simultaneously in order to allow the deployment of the pivoting blades 2a, 2b.

Bien entendu, l'invention n'est pas limitée au mode d'exécution décrit ci-dessus à titre d'exemple mais elle comprend toutes les variantes d'exécution couvertes par les revendications. A titre d'exemple, les moyens pour permettre l'extension ou le raccourcissement du bracelet peuvent être agencés uniquement sur l'une des lames pivotantes, l'autre lame pivotante étant configurée pour être connectée à un brin du bracelet par tout type de système d'attache.Of course, the invention is not limited to the embodiment described above by way of example but it includes all the embodiments covered by the claims. By way of example, the means for allowing the extension or the shortening of the bracelet can be arranged only on one of the pivoting blades, the other pivoting blade being configured to be connected to a strand of the bracelet by any type of system. attachment.

Claims (7)

  1. Clasp with an extensible buckle for a bracelet enabling the length of the bracelet to be adjusted, said clasp comprising:
    - a central support (1),
    - a first and second pivoting strip (2a, 2b) articulated at either end of the central support (1) and capable of being closed on the latter,
    - means for opening and closing (14, 16, 17, 19, 22) the clasp arranged in such a way as to lock the first and second pivoting strip (2a, 2b) against the central support (1) and to unlock said first and second pivoting strip (2a, 2b) from the central support (1) so they can be extended,
    - at least one of a first attachment (6a) solid with the first pivoting strip (2a) and arranged so as to be connected to a first strand of the bracelet and a second attachment (6b) solid with the second pivoting strip (2b), and arranged so as to be connected to a second strand of the bracelet;
    the clasp furthermore comprises an attachment body (4) arranged on at least one of the first and second pivoting strips (2a, 2b), the attachment or each first and second attachment (6a, 6b) being connected to the corresponding attachment body (4), which latter is capable of being displaced in the longitudinal direction of the corresponding pivoting strip (2a, 2b) to be locked in various positions along said strip (2a, 2b)
    characterised in that the pivoting strip or each pivoting strip (2a, 2b) comprises a bolt (7) arranged to operate in conjunction with the corresponding attachment body (4), the bolt (7) being capable of assuming respectively a first and a second axial position so that the attachment body or each attachment body (4) can be locked in one of the various indexed positions when the bolt (7) is situated in one of the first and second axial positions, and in such a way that the attachment or each attachment body (4) can be unlocked in order to be able to slide inside the corresponding hollow (5) to assume another indexed position when the bolt (7) is situated in the other of the first and second axial positions, the bolt (7) is arranged to cross the longitudinal edges (2, 2') of the pivoting strip or each pivoting strip (2a, 2b) as well as the attachment body (4) along a perpendicular axis in the direction of displacement of the said body (4).
  2. Clasp according to claim 1, characterised in that at least one of the pivoting strips (2a, 2b) is provided with an elongated hollow (5), the corresponding attachment body (4) being capable of sliding inside the hollow (5) along the longitudinal edges (2, 2') of the corresponding pivoting strip (2a, 2b), then being locked in translation in one of the various indexed positions in relation to said strip (2a, 2b).
  3. Clasp according to claim 1 or 2, characterised in that the attachment body or each attachment body (4) comprises an opening (8), the lower and/or upper edge of the opening (8) comprising several recesses (9a, 9b, 9c) spaced in the direction of displacement of the attachment body (4) and in that the bolt (7) comprises a bulge (7a) arranged to come to be accommodated in one of the recesses (9a, 9b, 9c) in order to lock the attachment body or each attachment body (4) in one of the various indexed positions while the bolt (7) is situated in one of the first and second axial positions.
  4. Clasp according to any one of the previous claims, characterised in that a pawl (10) is arranged in at least one of the longitudinal edges (2, 2') of the pivoting strip or each pivoting strip (2a, 2b) to operate in conjunction with several recesses (11) situated on the corresponding attachment body (4) in order to pre-position said body (4) in one of the various indexed positions before displacing the corresponding bolt (7) from any one of its two axial positions in order to lock said body (4).
  5. Clasp according to any one of claims 3 to 4, characterised in that the central support (1) of the clasp comprises two side structures (12, 12'), the internal flanks of which comprise notches (13) for accommodating any one end of the corresponding bolt (7) when the first and second pivoting strips (2a, 2b) are closed on said support.
  6. Bracelet comprising the clasp according to any one of the previous claims.
  7. Watch comprising the bracelet according to claim 6.
EP12741075.1A 2011-06-30 2012-06-14 Extendable clasp for a bracelet in particular for a watch Not-in-force EP2725937B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH11602011 2011-06-30
CH01200/11A CH705149B1 (en) 2011-06-30 2011-07-18 extensible clasp for a bracelet including a watch.
PCT/IB2012/001177 WO2013001337A1 (en) 2011-06-30 2012-06-14 Extendable clasp for a bracelet in particular for a watch

Publications (2)

Publication Number Publication Date
EP2725937A1 EP2725937A1 (en) 2014-05-07
EP2725937B1 true EP2725937B1 (en) 2016-01-20

Family

ID=47359488

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12741075.1A Not-in-force EP2725937B1 (en) 2011-06-30 2012-06-14 Extendable clasp for a bracelet in particular for a watch

Country Status (8)

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US (1) US20140130545A1 (en)
EP (1) EP2725937B1 (en)
JP (1) JP2014523774A (en)
CN (1) CN103732095B (en)
CH (1) CH705149B1 (en)
ES (1) ES2568914T3 (en)
HK (1) HK1195998A1 (en)
WO (1) WO2013001337A1 (en)

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EP2759222B1 (en) * 2013-01-24 2015-12-09 Omega SA Adjustable link
EP3210488B1 (en) * 2016-02-25 2018-09-26 Dexel S.A. Bracelet clasp comprising a device for adjusting the length of the bracelet
CN106151252B (en) * 2016-08-18 2018-10-02 深圳市顾邦科技有限责任公司 A kind of pivot structure part for wearable device
EP3412168B1 (en) * 2017-06-07 2020-03-25 Omega SA Clasp for bracelet
EP3417734B1 (en) 2017-06-21 2021-04-28 Dexel S.A. Bracelet clasp comprising a device for adjusting the length of the bracelet
EP3417735A1 (en) 2017-06-21 2018-12-26 Dexel S.A. Bracelet clasp comprising a device for adjusting the length of the bracelet
EP3641584B1 (en) 2017-06-21 2022-03-16 Dexel S.A. Bracelet clasp comprising a device for adjusting the length of the bracelet
EP3527101B1 (en) 2018-02-16 2024-03-06 Rolex Sa Timepiece device such as a cover with movable components
JP2022513770A (en) * 2018-12-10 2022-02-09 パテック フィリップ ソシエテ アノニム ジュネーブ A bracelet with a device for fine-tuning the length of the bracelet and at least one such device
EP3666110B1 (en) * 2018-12-13 2022-04-20 Omega SA Adjustable bracelet clasp
CN109588824A (en) * 2019-01-18 2019-04-09 深圳市逸协电子股份有限公司 A kind of Anti-dismantling wrist-watch
CN113439915B (en) * 2020-11-03 2022-09-30 深圳穿金戴银科技股份有限公司 Watch with adjustable watchband

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EP1943917B1 (en) * 2007-01-10 2013-04-17 Boucledor SA Clasp with extensible loop for bracelet

Also Published As

Publication number Publication date
EP2725937A1 (en) 2014-05-07
CH705149A1 (en) 2012-12-31
CH705149B1 (en) 2016-02-29
US20140130545A1 (en) 2014-05-15
JP2014523774A (en) 2014-09-18
CN103732095B (en) 2016-04-27
CN103732095A (en) 2014-04-16
ES2568914T3 (en) 2016-05-05
WO2013001337A1 (en) 2013-01-03
HK1195998A1 (en) 2014-11-28

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