EP2410888B1 - Extensible clasp for a bracelet, in particular a watchstrap - Google Patents

Extensible clasp for a bracelet, in particular a watchstrap Download PDF

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Publication number
EP2410888B1
EP2410888B1 EP10774269.4A EP10774269A EP2410888B1 EP 2410888 B1 EP2410888 B1 EP 2410888B1 EP 10774269 A EP10774269 A EP 10774269A EP 2410888 B1 EP2410888 B1 EP 2410888B1
Authority
EP
European Patent Office
Prior art keywords
bracelet
clasp
blade
end piece
rails
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
EP10774269.4A
Other languages
German (de)
French (fr)
Other versions
EP2410888A1 (en
Inventor
Georges LÉGER
Arnaud Girardot
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.)
Filing date
Publication date
Application filed by Thi Technologies Horlogere Industrielle Sa filed Critical Thi Technologies Horlogere Industrielle Sa
Publication of EP2410888A1 publication Critical patent/EP2410888A1/en
Application granted granted Critical
Publication of EP2410888B1 publication Critical patent/EP2410888B1/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
    • 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
    • A44C5/12—C-spring-type bracelets or wrist-watch holders
    • 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
    • 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 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.
  • JP59108411U is concerned with a clasp for a two-blade deblocking loop having a first and a second blade hinged relative to one another at a first end and a hinged cover 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 hood connected to one of the strands of a bracelet and to a mobile 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 when the clasp is in the closed position.
  • the clasp comprises for this purpose: a first and a second blade hinged relative to each other at a first end; an articulated hood at a second end of the first blade and arranged to be connected to a first strand of the bracelet; a movable tip arranged at a second end of the second blade to be connected to a second strand of the bracelet; indexing means for adjusting the length of the bracelet, as well as disengaging means arranged to allow movement of the movable tip from one indexed position to another.
  • the second blade ends with two rectilinear rails along which the movable endpiece is slidable.
  • the indexing means are located on at least one of the rails of the second blade while the disengaging means are arranged to move with the movable endpiece from one indexed position to another.
  • This clasp allow an immediate length adjustment, comfortable and precise, while benefiting from a simple, aesthetic and reliable construction.
  • the movable tip may advantageously constitute a passing assembly provided with a barb to receive one of the strands of a baking bracelet or other flexible material or form in itself one of the links of a bracelet with links .
  • the clasp with folding clasp comprises a first and a second blade 1, 2 hinged relative to each other at a first end.
  • a cap 3 is articulated to a second end of the first blade 1 and is arranged to be connected to a first strand of the bracelet.
  • the second end of the second blade 2 ends with two rectilinear rails 8, 8 '( Figure 2 ) which are arranged in the extension of the lateral sides of said second blade.
  • a movable endpiece 4 intended to be connected to a second strand of the bracelet, has two lateral sides 4a, 4b each comprising a flange 4c which is held against one and the other of the outer lateral sides of the two rails 8, 8 'of the second blade 2.
  • Each flange 4c of the mobile nozzle 4 is slidable along the corresponding rail 8, 8 '.
  • Indexing means 5, 5 ', 6 and 6' for adjusting the length of the bracelet and disengaging means 7, 7 'are arranged to allow movement of the mobile end 4 from an indexed position to a other.
  • the indexing means 5, 5 ', 6 and 6' comprise a notched part 5, 5 '( Figures 1 and 2 ) arranged along the inner lateral side of each of the two rails 8, 8 'and two blocking elements 6, 6' integral with the movable endpiece 4.
  • Each locking element 6, 6 ' is subject to return means 9 to be held against the notched portion 5, 5 'of each rectilinear rail 8, 8' in an indexed position.
  • Said notched portion 5, 5 ' preferably has a sawtooth profile while a complementary shaped tooth is cut on the face of the blocking elements 6, 6' intended to collaborate with the notched portion concerned 5, 5 '.
  • a position is indexed when each tooth of these two locking elements 6, 6 'is introduced into one of the notches of each notched portion 5, 5' under the action of the return means 9.
  • the disengaging means comprise two pushers 7, 7 'each arranged inside a housing 9a located on the flanges 4c of the movable element 4.
  • the two rectilinear rails 8, 8' of the second blade 2 are provided each of a straight slot 10 traversed by one and the other of the pushers 7, 7 'so that each pusher is connected to the locking element 6, 6' corresponding.
  • Simultaneous pressure on the two pushers 7, 7 'of the mobile nozzle 4 moves each locking element 6, 6' in a direction perpendicular to the longitudinal axis of the rails 8, 8 '.
  • each blocking element 6, 6 ' is disengaged from the corresponding notched part 5, 5' and the movable element 4 is disconnected from the two rails 8, 8 '. It can therefore freely slide along these rails 8, 8 'from one indexed position to another while each pusher 7, 7' slides along the straight slot 10.
  • the return means 9 allow to engage again the locking element 6, 6 'in the desired indexed position when the pushers are no longer actuated.
  • the orientation of the serrated toothing reduces the length of the bracelet without having to actuate the two pushers 7, 7 '. It suffices to exert a force along the longitudinal axis of the bracelet in order to overcome the force exerted by the return means 9 on the locking elements 6, 6 '.
  • the return means consist of two coil springs 9 arranged on either side of the body of each pusher 7, 7 'in the housing 9a of each flange 4c.
  • the mobile end 4 is a passing assembly provided with a barb 11 intended to be introduced into one of the holes of one of the strands of the bracelet.
  • the tip 4 is configured to form a first link of one of the strands of a link bracelet.
  • FIG. 1 two additional pushers 12, 12 'are arranged opposite each other under the cover 3 so that they protrude through a rectangular opening 13 located on the lateral sides of the cover 3.
  • a guide member 15 is screwed under the cover 3 to hold the pushers 12, 12 'and the springs 14, 14' confined in the cover 3, the shape of the guide member 15 being denied to allow a rectilinear movement of the pushers 12, 12 'when actuated.
  • Each pusher 12, 12 ' has a rectangular portion which is oriented in a plane perpendicular to the rectilinear movement of the pusher below the latter, its end 12a being bent to be positioned in a notch 16 at the ends of the two rails 8, 8 'on their lower part. Furthermore, the lower part of each bent portion has a 45 ° chamfer with respect to a horizontal plane so that the closure of the clasp can be achieved by a simple pressure on the cover 3. More precisely, when each chamfer is in contact with the upper part of each end of the two rails 8, 8 'and that a pressure is exerted on the cover 3, it follows a lateral displacement of each bent portion 12a to bring them up to each notch 16.
  • Each bent portion 12a is then moved, under the action of the springs 14, 14 'against their notches 16 respectively, the upper part of the rails 8, 8' making Stopper office thus locking the clasp.
  • the opening of the clasp is carried out when a simultaneous pressure is exerted on the two pushers 12, 12 '.
  • the indexing means 5, 5 ', 6, 6' could be arranged not along the inner lateral side of the two rails 8, 8 'but on their upper or lower side. In this configuration the locking element 6, 6 ' would be arranged to be able to slide along the upper or lower part of the rails 8. 8'.
  • this bracelet clasp is specially adapted for use in connection with watches, but it could also be used for any other object worn on the wrist.

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  • Buckles (AREA)
  • Slide Fasteners (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 connu 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 , JP59108411U , EP1716776 EP1378185 , EP1943917 , EP1920673 ou encore W02008064931 .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 , JP59108411U , EP1716776 EP1378185 , EP1943917 , EP1920673 or W02008064931 .

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.

JP59108411U 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. JP59108411U is concerned with a clasp for a two-blade deblocking loop having a first and a second blade hinged relative to one another at a first end and a hinged cover 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 hood connected to one of the strands of a bracelet and to a mobile 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 lorsque le fermoir est en position fermée. Le fermoir comporte à cet effet: une première et une seconde lame articulées l'une par rapport à l'autre à une première extrémité; un capot articulé à une seconde extrémité de la première lame et agencé pour être relié à un premier brin du bracelet; un embout mobile agencé à une seconde extrémité de la seconde lame pour être relié à un second brin du bracelet; des moyens d'indexation pour le réglage de la longueur du bracelet, ainsi que des moyens de débrayage agencés pour permettre un déplacement de l'embout mobile d'une position indexée à une autre. La seconde lame se termine par deux rails rectilignes le long desquels l'embout mobile est susceptible de coulisser. Les moyens d'indexation sont situés sur au moins un des rails de la seconde lame alors que les moyens de débrayage sont agencés pour se déplacer avec l'embout mobile d'une position indexée à une autre.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 when the clasp is in the closed position. The clasp comprises for this purpose: a first and a second blade hinged relative to each other at a first end; an articulated hood at a second end of the first blade and arranged to be connected to a first strand of the bracelet; a movable tip arranged at a second end of the second blade to be connected to a second strand of the bracelet; indexing means for adjusting the length of the bracelet, as well as disengaging means arranged to allow movement of the movable tip from one indexed position to another. The second blade ends with two rectilinear rails along which the movable endpiece is slidable. The indexing means are located on at least one of the rails of the second blade while the disengaging means are arranged to move with the movable endpiece from one indexed position to another.

Les caractéristiques de ce fermoir permettent un réglage de la longueur immédiat, confortable et précis, tout en bénéficiant d'une construction simple, esthétique et fiable.The characteristics of this clasp allow an immediate length adjustment, comfortable and precise, while benefiting from a simple, aesthetic and reliable construction.

Par ailleurs, l'embout mobile peut avantageusement constituer un ensemble passant pourvu d'un ardillon afin de recevoir un des brins d'un bracelet en cuire ou d'une autre matière flexible ou former en soi un des maillons d'un bracelet à maillons.Furthermore, the movable tip may advantageously constitute a passing assembly provided with a barb to receive one of the strands of a baking bracelet or other flexible material or form in itself one of the links of a bracelet with links .

Les caractéristiques de l'invention apparaîtront plus clairement à la lecture d'une 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 du fermoir de la Figure 1 assemblé,
  • La Figure 3 représente une vue de côté du fermoir verrouillé et dans laquelle l'embout mobile est dans une première position indexée,
  • La Figure 4 représente une vue de côté du fermoir verrouillé et dans laquelle l'embout mobile est dans une seconde position indexée,
  • La Figure 5 représente une vue de côté du fermoir dans une position où les lames sont partiellement déployées.
The characteristics of the invention will appear more clearly on reading a description of a preferred embodiment, given solely by way of 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 represents a perspective view of the clasp of the Figure 1 assembled,
  • The Figure 3 is a side view of the locked clasp and wherein the movable tip is in a first indexed position,
  • The Figure 4 is a side view of the locked clasp and wherein the movable tip is in a second indexed position,
  • The Figure 5 represents a side view of the clasp in a position where the blades are partially deployed.

Selon la forme d'exécution préférentielle de l'invention telle qu'illustrée par les Figures 1 à 5, le fermoir à boucle déployante comporte une première et une seconde lame 1, 2 articulées l'une par rapport à l'autre à une première extrémité. Un capot 3 est quant à lui articulé à une seconde extrémité de la première lame 1 et est agencé pour être relié à un premier brin du bracelet. La seconde extrémité de la seconde lame 2 se termine par deux rails rectilignes 8, 8' (Figure 2) qui sont agencés dans le prolongement des côtés latéraux de ladite seconde lame. En référence notamment à la Figure 2, un embout mobile 4, destiné à être relié à un second brin du bracelet, comporte deux côtés latéraux 4a, 4b comprenant chacun un flasque 4c qui est maintenu contre l'un et l'autre des côtés latéraux externes des deux rails 8, 8' de la seconde lame 2. Chaque flasque 4c de l'embout mobile 4 est susceptible de coulisser le long du rail 8, 8' correspondant.According to the preferred embodiment of the invention as illustrated by the Figures 1 to 5 , the clasp with folding clasp comprises a first and a second blade 1, 2 hinged relative to each other at a first end. A cap 3 is articulated to a second end of the first blade 1 and is arranged to be connected to a first strand of the bracelet. The second end of the second blade 2 ends with two rectilinear rails 8, 8 '( Figure 2 ) which are arranged in the extension of the lateral sides of said second blade. With reference in particular to the Figure 2 , a movable endpiece 4, intended to be connected to a second strand of the bracelet, has two lateral sides 4a, 4b each comprising a flange 4c which is held against one and the other of the outer lateral sides of the two rails 8, 8 'of the second blade 2. Each flange 4c of the mobile nozzle 4 is slidable along the corresponding rail 8, 8 '.

Des moyens d'indexation 5, 5', 6 et 6' pour le réglage de la longueur du bracelet et des moyens de débrayage 7, 7' sont agencés pour permettre un déplacement de l'embout mobile 4 d'une position indexée à une autre. Les moyens d'indexation 5, 5', 6 et 6' comportent une partie crantée 5, 5' (Figures 1 et 2) agencée le long du côté latéral interne de chacun des deux rails 8, 8' ainsi que deux éléments de blocage 6, 6' solidaire de l'embout mobile 4. Chaque élément de blocage 6, 6' est assujetti à des moyens de rappel 9 pour être maintenu contre la partie crantée 5, 5' de chaque rail rectiligne 8, 8' dans une position indexée. Ladite partie crantée 5, 5' possède préférablement un profil en dents de scie alors qu'une dent de forme complémentaire est taillée sur la face des éléments de blocage 6, 6' destinée à collaborer avec la partie crantée concernée 5, 5'. Une position est indexée lorsque chaque dent de ces deux éléments de blocage 6, 6' s'introduit dans l'un des crans de chaque partie crantée 5, 5' sous l'action des moyen de rappel 9.Indexing means 5, 5 ', 6 and 6' for adjusting the length of the bracelet and disengaging means 7, 7 'are arranged to allow movement of the mobile end 4 from an indexed position to a other. The indexing means 5, 5 ', 6 and 6' comprise a notched part 5, 5 '( Figures 1 and 2 ) arranged along the inner lateral side of each of the two rails 8, 8 'and two blocking elements 6, 6' integral with the movable endpiece 4. Each locking element 6, 6 'is subject to return means 9 to be held against the notched portion 5, 5 'of each rectilinear rail 8, 8' in an indexed position. Said notched portion 5, 5 'preferably has a sawtooth profile while a complementary shaped tooth is cut on the face of the blocking elements 6, 6' intended to collaborate with the notched portion concerned 5, 5 '. A position is indexed when each tooth of these two locking elements 6, 6 'is introduced into one of the notches of each notched portion 5, 5' under the action of the return means 9.

Selon la Figure 1, les moyens de débrayage comportent deux poussoirs 7, 7' agencés chacun à l'intérieur d'un logement 9a situé sur les flasques 4c de l'élément mobile 4. Les deux rails rectilignes 8, 8' de la seconde lame 2 sont pourvus chacun d'une fente rectiligne 10 traversée par l'un et l'autre des poussoirs 7, 7' afin que chaque poussoir soit connecté à l'élément de blocage 6, 6' correspondant. Une pression simultanée sur les deux poussoirs 7, 7' de l'embout mobile 4 permet de déplacer chaque élément de blocage 6, 6' dans une direction perpendiculaire à l'axe longitudinal des rails 8, 8'. A cet instant, la dent de chaque élément de blocage 6, 6' se trouve dégagée de la partie crantée correspondante 5, 5' et l'élément mobile 4 se retrouve désolidarisé des deux rails 8, 8'. Il peut donc librement coulisser le long des ces rails 8, 8' d'une position indexée à une autre alors que chaque poussoir 7, 7' coulisse le long de la fente rectiligne 10. Les moyens de rappel 9 permettent d'engager à nouveau l'élément de blocage 6, 6' dans la position indexée souhaitée lorsque les poussoirs ne sont plus actionnés.According to Figure 1 , the disengaging means comprise two pushers 7, 7 'each arranged inside a housing 9a located on the flanges 4c of the movable element 4. The two rectilinear rails 8, 8' of the second blade 2 are provided each of a straight slot 10 traversed by one and the other of the pushers 7, 7 'so that each pusher is connected to the locking element 6, 6' corresponding. Simultaneous pressure on the two pushers 7, 7 'of the mobile nozzle 4 moves each locking element 6, 6' in a direction perpendicular to the longitudinal axis of the rails 8, 8 '. At this moment, the tooth of each blocking element 6, 6 'is disengaged from the corresponding notched part 5, 5' and the movable element 4 is disconnected from the two rails 8, 8 '. It can therefore freely slide along these rails 8, 8 'from one indexed position to another while each pusher 7, 7' slides along the straight slot 10. The return means 9 allow to engage again the locking element 6, 6 'in the desired indexed position when the pushers are no longer actuated.

Il est précisé que l'orientation de la denture en dents de scie permet de diminuer la longueur du bracelet sans devoir actionner les deux poussoirs 7, 7'. Il suffit d'exercer une force selon l'axe longitudinal du bracelet afin de surmonter la force exercée par les moyens de rappel 9 sur les éléments de blocage 6, 6'. Dans cette forme d'exécution, les moyens de rappel sont constitués de deux ressorts boudin 9 agencés de part et d'autre du corps de chaque poussoir 7, 7' dans le logement 9a de chaque flasque 4c.It is specified that the orientation of the serrated toothing reduces the length of the bracelet without having to actuate the two pushers 7, 7 '. It suffices to exert a force along the longitudinal axis of the bracelet in order to overcome the force exerted by the return means 9 on the locking elements 6, 6 '. In this embodiment, the return means consist of two coil springs 9 arranged on either side of the body of each pusher 7, 7 'in the housing 9a of each flange 4c.

Dans ce mode d'exécution, l'embout mobile 4 est un ensemble passant pourvu d'un ardillon 11 destiné à être introduit dans l'un des trous d'un des brins du bracelet. Dans une variante non illustrée, l'embout 4 est configuré de manière à constituer un premier maillon d'un des brins d'un bracelet à maillons.In this embodiment, the mobile end 4 is a passing assembly provided with a barb 11 intended to be introduced into one of the holes of one of the strands of the bracelet. In a variant not shown, the tip 4 is configured to form a first link of one of the strands of a link bracelet.

Selon la Figure 1, deux poussoirs additionnels 12, 12' sont agencés l'un en face de l'autre sous le capot 3 de manière à ce qu'ils dépassent au travers d'une ouverture rectangulaire 13 située sur les flancs latéraux du capot 3. Deux ressorts à boudin 14, 14' sont montés entre les deux poussoirs 12, 12' pour que ces derniers soient assujettis à une force de rappel. Un élément de guidage 15 est vissé sous le capot 3 pour maintenir les poussoirs 12, 12' et les ressorts 14, 14' confinés dans le capot 3, la forme de l'élément de guidage 15 étant dénie pour permettre un mouvement rectiligne des poussoirs 12, 12' lorsqu'ils sont actionnés. Chaque poussoir 12, 12' possède une partie rectangulaire qui est orientée dans un plan perpendiculaire au déplacement rectiligne du poussoir en dessous de ce dernier, son extrémité 12a étant coudée pour venir se positionner dans une échancrure 16 située aux extrémités des deux rails 8, 8' sur leur partie inférieure. Par ailleurs, la partie inférieure de chaque partie coudée comporte un chanfrein à 45° par rapport à un plan horizontal afin que la fermeture du fermoir puisse être réalisée par une simple pression sur le capot 3. Plus précisément, lorsque chaque chanfrein se trouve en contact avec la partie supérieure de chaque extrémité des deux rails 8, 8' et qu'une pression est exercée sur le capot 3, il s'ensuit un déplacement latéral de chaque partie coudée 12a afin d'amener celles-ci à hauteur de chaque échancrure 16. Chaque partie coudée 12a est ensuite déplacée, sous l'action des ressorts 14, 14', contre leur échancrure 16 respective, la partie supérieure des railles 8, 8' faisant office de butée verrouillant ainsi le fermoir. L'ouverture du fermoir est quant à elle réalisée lorsqu'une pression simultanée est exercée sur les deux poussoirs 12, 12'.According to Figure 1 two additional pushers 12, 12 'are arranged opposite each other under the cover 3 so that they protrude through a rectangular opening 13 located on the lateral sides of the cover 3. Two springs coil 14, 14 'are mounted between the two pushers 12, 12' so that they are subject to a restoring force. A guide member 15 is screwed under the cover 3 to hold the pushers 12, 12 'and the springs 14, 14' confined in the cover 3, the shape of the guide member 15 being denied to allow a rectilinear movement of the pushers 12, 12 'when actuated. Each pusher 12, 12 'has a rectangular portion which is oriented in a plane perpendicular to the rectilinear movement of the pusher below the latter, its end 12a being bent to be positioned in a notch 16 at the ends of the two rails 8, 8 'on their lower part. Furthermore, the lower part of each bent portion has a 45 ° chamfer with respect to a horizontal plane so that the closure of the clasp can be achieved by a simple pressure on the cover 3. More precisely, when each chamfer is in contact with the upper part of each end of the two rails 8, 8 'and that a pressure is exerted on the cover 3, it follows a lateral displacement of each bent portion 12a to bring them up to each notch 16. Each bent portion 12a is then moved, under the action of the springs 14, 14 'against their notches 16 respectively, the upper part of the rails 8, 8' making Stopper office thus locking the clasp. The opening of the clasp is carried out when a simultaneous pressure is exerted on the two pushers 12, 12 '.

Les moyens d'indexation 5, 5', 6, 6' pourraient être agencés non pas le long du côté latéral interne des deux rails 8, 8' mais sur leur côté supérieur ou inférieur. Dans cette configuration l'élément de blocage 6, 6' serait agencé pour pouvoir coulisser le long de la partie supérieure ou inférieure des rails 8. 8'.The indexing means 5, 5 ', 6, 6' could be arranged not along the inner lateral side of the two rails 8, 8 'but on their upper or lower side. In this configuration the locking element 6, 6 'would be arranged to be able to slide along the upper or lower part of the rails 8. 8'.

Enfin, ce fermoir pour bracelet est spécialement adapté à un usage en relation avec des montres, mais il pourrait également être utilisé pour tout autre objet porté au poignet.Finally, this bracelet clasp is specially adapted for use in connection with watches, but it could also be used for any other object worn on the wrist.

Claims (12)

  1. Folding clasp a for bracelet allowing the length of the bracelet to be adjusted when the clasp is closed, the said clasp comprising:
    - a first and a second blade (1, 2) hinged to one another at a first end,
    - a cover (3) hinged to a second end of the first blade (1) and arranged so as to be connected to a first strand of the bracelet,
    - a mobile end piece (4) arranged at a second end of the second blade (2) so as to be connected to a second strand of the bracelet,
    - indexing means (5, 5', 6, 6') for adjusting the length of the bracelet,
    - release means (7, 7') arranged so as to allow movement of the mobile end piece (4) from one indexed position to another,
    characterised in that
    - the second blade (2) ends in two straight rails (8, 8') along which the mobile end piece (4) is able to slide,
    - the indexing means (5, 5', 6, 6') are located on at least one of the rails (8, 8') of the second blade (2),
    - the release means (7, 7') are arranged so as to move with the mobile end piece (4).
  2. Clasp according to claim 1, characterised in that the two straight rails (8, 8') are arranged along the sides of the second blade (2).
  3. Clasp according to claim 1 or 2, characterised in that the mobile end piece (4) comprises two sides (4a, 4b) each comprising a flange (4c) which is held against both external sides of the two rails (8, 8') of the second blade (2), with each flange (4c) of the mobile end piece (4) able to slide along the corresponding rail (8, 8').
  4. Clasp according to claim 3 or 4, characterised in that the indexing means (5, 5', 6, 6') comprise a toothed part (5, 5') arranged along the inner side of at least one of the two rails (8, 8'), or along the bottom or top of the said rail (8, 8'), the indexing means (5, 5', 6, 6') comprising, furthermore, at least one locking element (6, 6') supporting the mobile tip (4), with the locking element (6, 6') being subject to biasing means (9) so as to be held against the toothed part (5, 5') of the rail (8, 8') in an indexed position, the locking element (6, 6') being released from the toothed part (5) of the rail (8, 8') when the release mechanism is actuated to allow movement of the mobile end piece (4) along the two rails (8, 8') from one indexed position to another position when the length of the bracelet is adjusted.
  5. Clasp according to claim 4, characterised in that the toothed part (5, 5') of the rail(s) (8, 8') is constituted by a set of saw teeth whereas the head of the locking element (6, 6') that is arranged to cooperate with the corresponding toothed part (5, 5') comprises a tooth of complementary shape, with the set of saw teeth in the toothed part (5, 5') oriented so that the length of the bracelet can be reduced without having to actuate the release mechanism (7, 7').
  6. Clasp according to claim 4 or 5, characterised in that the indexing means (5, 5', 6, 6') comprise a first and a second toothed part (5, 5') arranged respectively along the inner side of both of the two rails (8, 8'), as well as two locking elements (6, 6') each arranged to cooperate with the respective toothed part (5, 5') of the corresponding rail (8, 8').
  7. Clasp according to claim 4, 5 or 6, characterised in that the release means comprise a first and a second push-button (7, 7') each arranged on the flange (4c) respectively of both sides (4a, 4b) of the mobile end piece (4), each push-button (7, 7') being connected to the corresponding locking element (6, 6'), and in that a groove (10) is arranged along each rail (8, 8') of the second blade (2) so that each push-button (7, 7') can slide along the respective groove (10) when the length of the bracelet is adjusted.
  8. Clasp according to any one of the preceding claims, characterised in that the cover (3) has means for locking the clasp comprising two additional push-buttons (12, 12') arranged on the sides of the cover (3), a bent part (12a) being connected to the underside of each push-button (12, 12'), and each bent part (12a) being arranged to position itself under a corresponding part (16) arranged at the tip of each rail (8, 8').
  9. Clasp according to any one of the preceding claims, characterised in that the mobile end piece (4) is a unit comprising a barb (11) arranged to be inserted into one of the holes in one of the strands of the bracelet.
  10. Clasp according to any one of claims 1 to 8, characterised in that the mobile end piece (4) comprises a first link of one of the strands of the bracelet.
  11. Bracelet comprising the clasp according to any one of the preceding claims.
  12. Watch comprising the bracelet according to claim 11.
EP10774269.4A 2009-10-26 2010-10-08 Extensible clasp for a bracelet, in particular a watchstrap Not-in-force EP2410888B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01629/09A CH702061A1 (en) 2009-10-26 2009-10-26 Stretch bracelet clasp.
PCT/IB2010/002550 WO2011051768A1 (en) 2009-10-26 2010-10-08 Extensible clasp for a bracelet, in particular a watchstrap

Publications (2)

Publication Number Publication Date
EP2410888A1 EP2410888A1 (en) 2012-02-01
EP2410888B1 true EP2410888B1 (en) 2013-05-01

Family

ID=43365861

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10774269.4A Not-in-force EP2410888B1 (en) 2009-10-26 2010-10-08 Extensible clasp for a bracelet, in particular a watchstrap

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US (1) US9149093B2 (en)
EP (1) EP2410888B1 (en)
JP (1) JP5839498B2 (en)
KR (1) KR20120107932A (en)
CN (1) CN102630145B (en)
CH (1) CH702061A1 (en)
ES (1) ES2424120T3 (en)
IN (1) IN2012DN03384A (en)
TW (1) TWI524862B (en)
WO (1) WO2011051768A1 (en)

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Also Published As

Publication number Publication date
JP2013508055A (en) 2013-03-07
TWI524862B (en) 2016-03-11
KR20120107932A (en) 2012-10-04
EP2410888A1 (en) 2012-02-01
CN102630145A (en) 2012-08-08
US9149093B2 (en) 2015-10-06
WO2011051768A1 (en) 2011-05-05
CN102630145B (en) 2016-02-10
TW201127311A (en) 2011-08-16
JP5839498B2 (en) 2016-01-06
CH702061A1 (en) 2011-04-29
US20120240361A1 (en) 2012-09-27
IN2012DN03384A (en) 2015-10-23
ES2424120T3 (en) 2013-09-27

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