EP0867132B1 - Automatic closing device for watch bands - Google Patents

Automatic closing device for watch bands Download PDF

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Publication number
EP0867132B1
EP0867132B1 EP98400712A EP98400712A EP0867132B1 EP 0867132 B1 EP0867132 B1 EP 0867132B1 EP 98400712 A EP98400712 A EP 98400712A EP 98400712 A EP98400712 A EP 98400712A EP 0867132 B1 EP0867132 B1 EP 0867132B1
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EP
European Patent Office
Prior art keywords
presser
support element
spring
closing device
articulation
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.)
Expired - Lifetime
Application number
EP98400712A
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German (de)
French (fr)
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EP0867132A1 (en
Inventor
Claude Grossiord
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.)
Chanel SARL
Original Assignee
G&F Chatelain SA
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Publication date
Application filed by G&F Chatelain SA filed Critical G&F Chatelain SA
Publication of EP0867132A1 publication Critical patent/EP0867132A1/en
Application granted granted Critical
Publication of EP0867132B1 publication Critical patent/EP0867132B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
    • A44C5/18—Fasteners for straps, chains or the like
    • A44C5/22—Fasteners for straps, chains or the like for closed straps
    • A44C5/24—Fasteners for straps, chains or the like for closed straps with folding devices
    • A44C5/243—Automatic folding spring closure

Definitions

  • the present invention relates to a clasp of the type automatic opening / closing, especially for watch bands.
  • clasps that are essentially consisting of two mounted elements pivoting relative to each other at the ends respective of which the two ends are connected free of the strands constituting a watch bracelet. Both elements constituting such a clasp are thus able to occupy two positions, namely a first position, or closed position, in which the two elements are locked to each other by holding means mechanical, and a second position, or position opening, in which these two elements are released, thereby increasing the overall diameter of the watch strap so that the user can easily insert or remove it from his wrist.
  • a disadvantage of this type of clasp is that, in open position, the two elements cannot pivot beyond an angle of 180 °, which sometimes makes it difficult inserting the user's wrist into the bracelet.
  • any openness exerted on these two elements, which tends to rotate them beyond a aligned position, has the effect of deteriorating irremediable the clasp.
  • the object of the present invention is to remedy these disadvantages by proposing a clasp of this type which, in open position, allows two pivoting elements which constitute it to pivot beyond an angle of 180 °.
  • the present invention thus relates to a clasp, in particular for a watch strap, of the type comprising at least two elements, namely, a first element, or element support, and a second element, or pressure element, which are linked at one of their ends by a joint, their other ends being respectively fixed on the free ends of two parts to be joined,
  • the element support comprising a bending spring which requests a extension of the pressing element beyond the joint, in two stable equilibrium positions, at know a first position, or closed position, in which he applies the pressing element to the element support, and a second position, or open position, in which he separates the two elements from each other, characterized in that the pressing element comprises at least a light adjacent to the joint, the dimensions of which are such that it allows the bending spring, when the pressing element is in the open position, to cross this light so as not to solicit any more said pressing element.
  • the clasp pressing element can have a shape global close to that of the support element, and its width may be such that it can, in the position of closing, recessed at least partially in a housing provided in the support element.
  • the articulation of the clasp can consist of a transverse axis which is integral with the support element and which is slightly offset towards the outside of it, in the direction of the pressing element when it located in the closed position.
  • the bending spring can be fixed on the support element by any means, and in particular by riveting, by embedding etc ...
  • the face of the active end of the spring is supported on the joint when the pressing element is in the open position and the outer side of the other end of the spring is supported on the internal face of the support element.
  • the face internal of the central part of the spring can be supported on an external face of a holding element integral with the support element.
  • the present invention also relates to a clasp consisting of three elements, namely an element support comprising at each of its ends a articulation on which a pressing element is mounted, the support element comprising at each of its ends a bending spring which requests an extension of the pressing element beyond the joint in two stable equilibrium positions, i.e. a position of closure in which he applies each element presser on the support element and an open position in which he spreads the pressing elements of the element support, each pressing element comprising at least one light adjacent to the joint, the dimensions of which are such that it allows the bending spring, when the pressing element is in the open position, to cross this light so as not to solicit any more the pressing element.
  • Figure 1 is a view of the outer face of a clasp according to the invention in the open position.
  • Figure 1a is an enlarged partial view of a end of the clasp pressing element shown on Figure 1.
  • Figure 2 is a view of the inner side of the clasp shown in figure 1.
  • Figure 3 is a side view of the clasp shown in Figures 1 and 2, in the equilibrium position unstable, between closed position and position opening.
  • Figure 4 is a side view in partial section enlarged clasp shown in Figure 3.
  • Figure 5 is a side view in partial section enlarged clasp according to the invention shown in a opening position corresponding to maximum opening that it is possible to obtain with clasps of this type in accordance with the prior art.
  • Figure 6 is a side view in partial section enlarged of the clasp shown in the closed position.
  • Figure 7 is a side view in partial section enlarged clasp shown in the open position.
  • Figure 8 is a side view in partial section enlarged clasp shown in open position Max.
  • Figure 9 is a perspective and sectional view partial enlarged of a first variant of implementation work of a clasp according to the invention.
  • Figure 10 is a perspective view in section partial enlarged view of a second implementation variant of a clasp according to the invention.
  • Figure 11 is a schematic side view of a third variant of implementation of a following clasp the invention.
  • the clasp according to the invention basically consists of two elements namely a support element 1 and a pressure element 3 which are articulated by one of their respective ends around a transverse axis 5 which is integral with the element support 1.
  • the clasp is intended to join two bands forming a watch strap which are not shown on the drawing.
  • the end of the support element 1 is hollowed out a window 12, so as to form two extreme wings 7 between which the pressing element 3 takes place, this the latter being mounted articulated on axis 5.
  • a spring of bending plane 9 is fixed by two rivets 11 on the face support element 1 (in the present text by internal face of the elements the face intended to come into contact with the wrist of the user, the external face being the other face of these elements) and, when the two elements 1 and 3 are in the extension of each other, as shown in the Figures 1,2 and 5, this spring 9 bears against the axis 5.
  • the active end of the pressing element 3 (on will designate by active end of elements 1 and 3 that located near joint 5) is also hollowed out of a window 13, so that it ends itself by two wings 14 whose ends are joined by a transverse axis 19 on which a free sleeve 21 is mounted rotating on it.
  • the support element 1 is hollowed out with an upper groove 2 which is intended to receive the pressing element 3 when it is in the closed position. Otherwise, in order to improve this embedding, the axis of rotation 5 is slightly offset towards the outside of the bracelet compared to to the general direction of the curved profile of the element support 1.
  • each of the two respective elements 1 and 3 namely the ends 1a and 3a are of conventional type and are intended to receive, in a known manner, the two ends free bands that make up the watch strap.
  • the spring 9 is secured to the support element 1 removably without the need for fixing by riveting.
  • the active end of the spring 9 in contact with the hinge pin 5 and its other end is in contact, by its external face, with the internal face of a cavity 10 hollowed out in the support element 1.
  • the internal face of the central part of the spring 9 is in contact with the external face of a holding element 18 which is integral of the support element 1.
  • this central part is hollowed out with a cavity in which a nipple 22 of form takes place additional provided on the holding element 18.
  • the active end of the spring 9 ' ends with a fork with two tines 25.25 'and the end corresponding to the pressing element 3 is hollowed out by two lights 13,13 'which are intended to let these ends when the pressing element 3 performs its pivoting movement backwards.
  • the extension of the pressing element 3 beyond the axis of rotation 5 is consisting of an axial part 27 and two elements transverse 29,29 'on which the spring 9' comes in support to urge the pressing element 3 beyond the unstable equilibrium position shown in Figures 3 and 4 in order to bring it either to the position of closing either towards the open position.
  • the following clasp consists of three elements, namely a support element 1 ', which is provided with two ends identical active ingredients, i.e. ends comprising an articulation 5 constituted by a transverse axis, of so as to receive pivotally at each of its ends a pressing element 3.3 'of the same type as that described previously.
  • a support element 1 ' which is provided with two ends identical active ingredients, i.e. ends comprising an articulation 5 constituted by a transverse axis, of so as to receive pivotally at each of its ends a pressing element 3.3 'of the same type as that described previously.
  • One such implementation is particularly interesting, especially when wishes to use metallic watch straps since it is therefore possible to have a clasp rigorously located in the middle of the bracelet shows.

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  • Buckles (AREA)
  • Adornments (AREA)
  • Outer Garments And Coats (AREA)
  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)

Abstract

The clasp for a watch bracelet comprises two parts, a support part (1) and a press part (3). These parts are connected at one of their ends by a pivot (5). The other ends (1a,3a) are fixed on the free ends of two parts to be connected. The support part comprises a flexing spring (9) which assists an extension of the presser part beyond the pivot in stable equilibrium open or closed positions. The presser has a slot (13), adjacent to the pivot, the dimensions of which enable the spring to pass through it when the presser is in the open position so as to no longer assist it.

Description

La présente invention concerne un fermoir du type à ouverture/fermeture automatique notamment pour bracelet-montre.The present invention relates to a clasp of the type automatic opening / closing, especially for watch bands.

On connaít de nombreux types de fermoirs qui sont essentiellement constitués de deux éléments montés pivotants l'un par rapport à l'autre aux extrémités respectives desquels sont reliées les deux extrémités libres des brins constituant un bracelet-montre. Les deux éléments constituant un tel fermoir sont ainsi aptes à occuper deux positions, à savoir une première position, ou position de fermeture, dans laquelle les deux éléments sont verrouillés l'un sur l'autre par des moyens de maintien mécaniques, et une seconde position, ou position d'ouverture, dans laquelle ces deux éléments sont libérés, augmentant ainsi du même coup le diamètre global du bracelet-montre de façon à permettre à l'utilisateur de l'introduire ou de l'extraire facilement de son poignet.We know many types of clasps that are essentially consisting of two mounted elements pivoting relative to each other at the ends respective of which the two ends are connected free of the strands constituting a watch bracelet. Both elements constituting such a clasp are thus able to occupy two positions, namely a first position, or closed position, in which the two elements are locked to each other by holding means mechanical, and a second position, or position opening, in which these two elements are released, thereby increasing the overall diameter of the watch strap so that the user can easily insert or remove it from his wrist.

Un inconvénient inhérent à ce type de fermoir provient du fait que les dispositifs de verrouillage des deux éléments qui le constituent, soit nécessitent un effort important pour assurer leur verrouillage, soit présentent le risque de ne pas maintenir le bracelet en toute sécurité.An inherent drawback to this type of clasp stems from the fact that the locking devices two elements that constitute it, either require a significant effort to ensure their locking, either present the risk of not keeping the bracelet in completely safe.

Pour éviter ce type d'inconvénient, on a proposé, dans une demande de brevet FR-A-2.710.503, un fermoir dans lequel les deux éléments sont sollicités, en position de fermeture, par des moyens élastiques qui assurent ainsi en permanence une force tendant à maintenir le fermoir en position de fermeture. Un tel fermoir permet de limiter les risques d'ouverture intempestive du bracelet.To avoid this type of drawback, it has been proposed, in patent application FR-A-2,710,503, a clasp in which the two elements are stressed, in the position of closure, by elastic means which thus ensure permanently a force tending to maintain the clasp in closed position. Such a clasp makes it possible to limit the risks of inadvertent opening of the bracelet.

Un inconvénient de ce type de fermoir est que, en position d'ouverture, les deux éléments ne peuvent pivoter au-delà d'un angle de 180°, ce qui rend parfois difficile l'introduction du poignet de l'utilisateur dans le bracelet. De plus, tout effort d'ouverture exercé sur ces deux éléments, qui tend à les faire pivoter au-delà d'une position alignée, a pour effet de détériorer de façon irrémédiable le fermoir. A disadvantage of this type of clasp is that, in open position, the two elements cannot pivot beyond an angle of 180 °, which sometimes makes it difficult inserting the user's wrist into the bracelet. In addition, any openness exerted on these two elements, which tends to rotate them beyond a aligned position, has the effect of deteriorating irremediable the clasp.

La présente invention a pour but de remédier à ces inconvénients en proposant un fermoir de ce type qui, en position d'ouverture, permet aux deux éléments pivotants qui le constituent de pivoter au-delà d'un angle de 180°.The object of the present invention is to remedy these disadvantages by proposing a clasp of this type which, in open position, allows two pivoting elements which constitute it to pivot beyond an angle of 180 °.

La présente invention a ainsi pour objet un fermoir, notamment pour bracelet-montre, du type comportant au moins deux éléments, à savoir, un premier élément, ou élément support, et un second élément, ou élément presseur, qui sont liés à l'une de leurs extrémités par une articulation, leurs autres extrémités étant respectivement fixées sur les extrémités libres de deux parties à réunir, l'élément support comportant un ressort de flexion qui sollicite une prolongation de l'élément presseur au-delà de l'articulation, dans deux positions d'équilibre stables, à savoir une première position, ou position de fermeture, dans laquelle il applique l'élément presseur sur l'élément support, et une seconde position, ou position d'ouverture, dans laquelle il écarte les deux éléments l'un de l'autre, caractérisé en ce que l'élément presseur comporte au moins une lumière adjacente à l'articulation, dont les dimensions sont telles qu'elle permette au ressort de flexion, lorsque l'élément presseur se trouve dans la position d'ouverture, de traverser cette lumière de façon à ne plus solliciter ledit élément presseur.The present invention thus relates to a clasp, in particular for a watch strap, of the type comprising at least two elements, namely, a first element, or element support, and a second element, or pressure element, which are linked at one of their ends by a joint, their other ends being respectively fixed on the free ends of two parts to be joined, the element support comprising a bending spring which requests a extension of the pressing element beyond the joint, in two stable equilibrium positions, at know a first position, or closed position, in which he applies the pressing element to the element support, and a second position, or open position, in which he separates the two elements from each other, characterized in that the pressing element comprises at least a light adjacent to the joint, the dimensions of which are such that it allows the bending spring, when the pressing element is in the open position, to cross this light so as not to solicit any more said pressing element.

L'élément presseur du fermoir peut avoir une forme globale voisine de celle de l'élément support, et sa largeur peut être telle qu'il puisse, dans la position de fermeture, s'encastrer au moins en partie dans un logement prévu dans l'élément support.The clasp pressing element can have a shape global close to that of the support element, and its width may be such that it can, in the position of closing, recessed at least partially in a housing provided in the support element.

L'articulation du fermoir peut être constituée d'un axe transversal qui est solidaire de l'élément support et qui est légèrement décalée vers l'extérieur de celui-ci, dans la direction de l'élément presseur lorsque celui-ci se trouve dans la position de fermeture. Le ressort de flexion peut être fixé sur l'élément support par tous moyens, et notamment par rivetage, par encastrement etc... Dans le cas d'une mise en place du ressort par encastrement, la face externe de l'extrémité active du ressort est en appui sur l'articulation lorsque l'élément presseur se trouve dans la position d'ouverture et la face externe de l'autre extrémité du ressort est en appui sur la face interne de l'élément support. Dans ce mode de mise en oeuvre, la face interne de la partie centrale du ressort peut être en appui sur une face externe d'un élément de maintien solidaire de l'élément support.The articulation of the clasp can consist of a transverse axis which is integral with the support element and which is slightly offset towards the outside of it, in the direction of the pressing element when it located in the closed position. The bending spring can be fixed on the support element by any means, and in particular by riveting, by embedding etc ... In the case a spring installation by embedding, the face of the active end of the spring is supported on the joint when the pressing element is in the open position and the outer side of the other end of the spring is supported on the internal face of the support element. In this embodiment, the face internal of the central part of the spring can be supported on an external face of a holding element integral with the support element.

La présente invention a également pour objet un fermoir constitué de trois éléments, à savoir un élément support comportant à chacune de ses extrémités une articulation sur laquelle est monté un l'élément presseur, l'élément support comportant à chacune de ses extrémités un ressort de flexion qui sollicite une prolongation de l'élément presseur au-delà de l'articulation dans deux positions d'équilibre stables, à savoir une position de fermeture dans laquelle il applique chaque l'élément presseur sur l'élément support et une position d'ouverture dans laquelle il écarte les éléments presseurs de l'élément support, chaque élément presseur comportant au moins une lumière adjacente à l'articulation, dont les dimensions sont telles qu'elle permette au ressort de flexion, lorsque l'élément presseur se trouve dans la position d'ouverture, de traverser cette lumière de façon à ne plus solliciter l'élément presseur.The present invention also relates to a clasp consisting of three elements, namely an element support comprising at each of its ends a articulation on which a pressing element is mounted, the support element comprising at each of its ends a bending spring which requests an extension of the pressing element beyond the joint in two stable equilibrium positions, i.e. a position of closure in which he applies each element presser on the support element and an open position in which he spreads the pressing elements of the element support, each pressing element comprising at least one light adjacent to the joint, the dimensions of which are such that it allows the bending spring, when the pressing element is in the open position, to cross this light so as not to solicit any more the pressing element.

On décrira ci-après, à titre d'exemple non limitatif, plusieurs formes d'exécution de la présente invention, en référence au dessin annexé sur lequel :A non-limiting example will be described below, several embodiments of the present invention, in reference to the attached drawing in which:

La figure 1 est une vue de la face externe d'un fermoir suivant l'invention en position d'ouverture.Figure 1 is a view of the outer face of a clasp according to the invention in the open position.

La figure 1a est une vue partielle agrandie d'une extrémité de l'élément presseur du fermoir représenté sur la figure 1.Figure 1a is an enlarged partial view of a end of the clasp pressing element shown on Figure 1.

La figure 2 est une vue de la face interne du fermoir représenté sur la figure 1.Figure 2 is a view of the inner side of the clasp shown in figure 1.

La figure 3 est une vue de profil du fermoir représenté sur les figures 1 et 2, en position d'équilibre instable, entre la position de fermeture et la position d'ouverture. Figure 3 is a side view of the clasp shown in Figures 1 and 2, in the equilibrium position unstable, between closed position and position opening.

La figure 4 est une vue de profil en coupe partielle agrandie du fermoir représenté sur la figure 3.Figure 4 is a side view in partial section enlarged clasp shown in Figure 3.

La figure 5 est une vue de profil en coupe partielle agrandie du fermoir suivant l'invention représenté dans une position d'ouverture correspondant à l'ouverture maximale qu'il est possible d'obtenir avec les fermoirs de ce type conformes à l'état antérieur de la technique.Figure 5 is a side view in partial section enlarged clasp according to the invention shown in a opening position corresponding to maximum opening that it is possible to obtain with clasps of this type in accordance with the prior art.

La figure 6 est une vue de profil en coupe partielle agrandie du fermoir représenté en position de fermeture.Figure 6 is a side view in partial section enlarged of the clasp shown in the closed position.

La figure 7 est une vue de profil en coupe partielle agrandie du fermoir représenté en position d'ouverture.Figure 7 is a side view in partial section enlarged clasp shown in the open position.

La figure 8 est une vue de profil en coupe partielle agrandie du fermoir représenté en position d'ouverture maximale.Figure 8 is a side view in partial section enlarged clasp shown in open position Max.

La figure 9 est une vue en perspective et coupe partielle agrandie d'une première variante de mise en oeuvre d'un fermoir suivant l'invention.Figure 9 is a perspective and sectional view partial enlarged of a first variant of implementation work of a clasp according to the invention.

La figure 10 est une vue en perspective et coupe partielle agrandie d'une seconde variante de mise en oeuvre d'un fermoir suivant l'invention.Figure 10 is a perspective view in section partial enlarged view of a second implementation variant of a clasp according to the invention.

La figure 11 est une vue de côté schématique d'une troisième variante de mise en oeuvre d'un fermoir suivant l'invention.Figure 11 is a schematic side view of a third variant of implementation of a following clasp the invention.

Sur les figures 1 à 8 le fermoir suivant l'invention se compose essentiellement de deux éléments à savoir un élément support 1 et un élément presseur 3 qui sont articulés par l'une de leurs extrémités respectives autour d'un axe transversal 5 qui est solidaire de l'élément support 1. Le fermoir est destiné à réunir deux bandes formant un bracelet-montre qui ne sont pas représentées sur le dessin. L'extrémité de l'élément support 1 est creusée d'une fenêtre 12, de façon à former deux ailes extrêmes 7 entre lesquelles prend place l'élément presseur 3, ce dernier étant monté articulé sur l'axe 5. Un ressort de flexion plan 9 est fixé par deux rivets 11 sur la face externe de l'élément support 1 (on désignera dans le présent texte par face interne des éléments la face destinée à venir en contact avec le poignet de l'utilisateur, la face externe étant l'autre face de ces éléments) et, lorsque les deux éléments 1 et 3 sont dans le prolongement l'un de l'autre, ainsi que représenté sur les figures 1,2 et 5, ce ressort 9 vient en appui contre l'axe 5.In Figures 1 to 8 the clasp according to the invention basically consists of two elements namely a support element 1 and a pressure element 3 which are articulated by one of their respective ends around a transverse axis 5 which is integral with the element support 1. The clasp is intended to join two bands forming a watch strap which are not shown on the drawing. The end of the support element 1 is hollowed out a window 12, so as to form two extreme wings 7 between which the pressing element 3 takes place, this the latter being mounted articulated on axis 5. A spring of bending plane 9 is fixed by two rivets 11 on the face support element 1 (in the present text by internal face of the elements the face intended to come into contact with the wrist of the user, the external face being the other face of these elements) and, when the two elements 1 and 3 are in the extension of each other, as shown in the Figures 1,2 and 5, this spring 9 bears against the axis 5.

L'extrémité active de l'élément presseur 3 (on désignera par extrémité active des éléments 1 et 3 celle située à proximité de l'articulation 5) est également creusée d'une fenêtre 13, si bien qu'il se termine lui-même par deux ailes 14 dont les extrémités sont réunies par un axe transversal 19 sur lequel est monté un manchon 21 libre en rotation sur celui-ci.The active end of the pressing element 3 (on will designate by active end of elements 1 and 3 that located near joint 5) is also hollowed out of a window 13, so that it ends itself by two wings 14 whose ends are joined by a transverse axis 19 on which a free sleeve 21 is mounted rotating on it.

A partir de la fenêtre 12 et jusqu'à l'extrémité la, l'élément support 1 est creusé d'une rainure supérieure 2 qui est destinée à recevoir l'élément presseur 3 lorsque celui-ci se trouve en position de fermeture. Par ailleurs, afin d'améliorer cet encastrement, l'axe de rotation 5 est légèrement décalé vers l'extérieur du bracelet par rapport à la direction générale du profil galbé de l'élément support 1.From window 12 and up to the end la, the support element 1 is hollowed out with an upper groove 2 which is intended to receive the pressing element 3 when it is in the closed position. Otherwise, in order to improve this embedding, the axis of rotation 5 is slightly offset towards the outside of the bracelet compared to to the general direction of the curved profile of the element support 1.

On constate également que le décalage vers l'extérieur de l'axe d'articulation 5 par rapport au profil général galbé de l'élément support 1 permet, en fonction de son importance, de régler la position d'équilibre instable de l'élément 3 par rapport à l'élément support 1, c'est-à-dire la valeur de l'angle α formé par ces deux éléments dans cette position d'équilibre.We also note that the shift towards the outside of the hinge pin 5 relative to the profile general curved support element 1 allows, depending on its importance, to adjust the unstable equilibrium position of element 3 with respect to support element 1, i.e. the value of the angle α formed by these two elements in this position of equilibrium.

Les extrémités opposées aux extrémités actives de chacun des deux éléments respectifs 1 et 3, à savoir les extrémités la et 3a, sont de type classique et sont destinées à recevoir, de façon connue, les deux extrémités libres des bandes qui constituent le bracelet de la montre.The ends opposite the active ends of each of the two respective elements 1 and 3, namely the ends 1a and 3a are of conventional type and are intended to receive, in a known manner, the two ends free bands that make up the watch strap.

Si, partant d'une position d'ouverture dans laquelle les deux éléments 1 et 3 sont sensiblement dans le prolongement l'un de l'autre, ainsi que représenté sur les figures 1, 2 et 5, on fait pivoter l'élément presseur 3 dans le sens de la flèche A, à savoir, sur les figures, dans le sens inverse des aiguilles d'une montre, le manchon 21 vient en appui sur le ressort 9 et déforme celui-ci, si bien que, pour un certain angle de rotation donné α, l'élément presseur 3, sous la sollicitation du ressort 9, se trouve dans une position d'équilibre instable, ainsi que représenté sur les figures 3 et 4. Si, comme représenté sur la figure 4, on poursuit la rotation de l'élément presseur 3 dans le sens de la flèche A, le ressort 9 sollicite alors cet élément afin de l'appliquer sur l'élément support 1 et l'on se trouve dès lors, ainsi que représenté sur la figure 6, dans la position de fermeture du fermoir. On remarquera que, partant de cette position de fermeture du fermoir, lorsque, sous l'effet d'une sollicitation, on fait tourner l'élément presseur 3 autour de l'articulation 5, dans le sens de la flèche B, le ressort 9 tend à ramener l'élément presseur 3 dans sa position de fermeture. On remarquera que, plus on éloigne l'élément 3 de l'élément 1, plus la force de rappel exercée par le ressort 9 sur l'axe 21 devient élevée.If, starting from an open position in which the two elements 1 and 3 are substantially in the extension of each other, as shown in the Figures 1, 2 and 5, the pressing element 3 is pivoted in the direction of arrow A, that is, in the figures, counterclockwise, the sleeve 21 comes to bear on the spring 9 and deforms the latter, if although, for a given angle of rotation α, the pressing element 3, under the stress of the spring 9, is in an unstable equilibrium position, as well as shown in Figures 3 and 4. If, as shown in Figure 4, we continue the rotation of the pressing element 3 in the direction of arrow A, the spring 9 then urges this element in order to apply it on the support element 1 and we are therefore, as shown in the figure 6, in the closed position of the clasp. We will notice that, starting from this closing position of the clasp, when, under the effect of a solicitation, one turns the pressing element 3 around the articulation 5, in the direction of arrow B, spring 9 tends to bring the element back presser 3 in its closed position. We will notice that the further we move element 3 away from element 1, the more restoring force exerted by the spring 9 on the axis 21 becomes high.

Si, partant de la position d'équilibre instable de l'élément 3, telle que représentée sur les figures 3 et 4, on sollicite celui-ci dans le sens de la flèche B, le ressort 9 tend alors à faire pivoter l'élément 3 dans le sens d'ouverture du fermoir. La sollicitation de l'élément presseur 3 par le ressort 9 cesse dès que, ainsi que représenté sur la figure 5, le ressort 9 vient en contact avec l'axe de rotation 5. On se trouve alors dans la position qui, dans les bracelets de ce type de l'état antérieur de la technique, représente une position limite au-delà de laquelle, si on continue à exercer sur l'élément presseur 3 une sollicitation dans le sens de la flèche B on exerce sur le fermoir un couple tel que l'on détériore celui-ci.If, starting from the unstable equilibrium position of element 3, as shown in FIGS. 3 and 4, it is requested in the direction of arrow B, the spring 9 then tends to rotate element 3 in the opening direction of the clasp. Solicitation of the element presser 3 by the spring 9 stops as soon as, as well as shown in Figure 5, the spring 9 comes into contact with the axis of rotation 5. We are then in the position which in bracelets of this type of state prior art, represents a limit position beyond which, if we continue to exercise on the element presser 3 a request in the direction of arrow B on exerts on the clasp a couple such that one deteriorates this one.

Dans le dispositif suivant l'invention, ainsi que représenté sur les figures 5 et 7, si, à partir de la position représentée sur la figure 5, on continue à solliciter l'élément support 3 dans le sens de la flèche B, celui-ci pivote sans problème autour de l'axe d'articulation 5 puisque le ressort 9 peut, au cours de ce mouvement de pivotement, traverser la fenêtre 13 prévue dans l'élément presseur 3. Il est ainsi possible, suivant l'invention, de poursuivre la rotation de l'élément presseur 3 dans le sens de la flèche B jusqu'à ce qu'il vienne en contact avec l'élément support 1, ce qui représente une rotation en arrière de la position suivant l'état antérieur de la technique d'environ 120°. Cette rotation permet ainsi à l'utilisateur de mettre en place et de retirer son bracelet plus facilement que dans les dispositifs suivant l'état antérieur de la technique, la surface libre dégagée par la rotation supplémentaire de l'élément presseur 3 se trouvant ainsi plus grande.In the device according to the invention, as well as shown in Figures 5 and 7, if, from the position shown in Figure 5, we continue to request the support element 3 in the direction of arrow B, this one swivels without problem around the axis articulation 5 since the spring 9 can, during this pivoting movement, cross the window 13 provided in the pressing element 3. It is thus possible, depending on the invention to continue the rotation of the element presser 3 in the direction of arrow B until it comes into contact with the support element 1, which represents a backward rotation of the next position the prior art of about 120 °. This rotation thus allows the user to set up and take off your bracelet more easily than in devices according to the prior art, the free surface released by the additional rotation of the pressing element 3 thus being larger.

Dans le mode de mise en oeuvre représenté sur la figure 9, le ressort 9 est solidarisé de l'élément support 1 de façon amovible sans faire appel à une fixation par rivetage. Dans ce mode de mise en oeuvre, en position d'ouverture, l'extrémité active du ressort 9 est en contact avec l'axe d'articulation 5 et son autre extrémité est en contact, par sa face externe, avec la face interne d'une cavité 10 creusée dans l'élément support 1. La face interne de la partie centrale du ressort 9 est en contact avec la face externe d'un élément de maintien 18 qui est solidaire de l'élément support 1. De préférence, comme représenté sur la figure 9, cette partie centrale est creusée d'une cavité dans laquelle vient prendre place un téton 22 de forme complémentaire prévu sur l'élément de maintien 18.In the embodiment shown in the Figure 9, the spring 9 is secured to the support element 1 removably without the need for fixing by riveting. In this embodiment, in position opening, the active end of the spring 9 is in contact with the hinge pin 5 and its other end is in contact, by its external face, with the internal face of a cavity 10 hollowed out in the support element 1. The internal face of the central part of the spring 9 is in contact with the external face of a holding element 18 which is integral of the support element 1. Preferably, as shown in Figure 9, this central part is hollowed out with a cavity in which a nipple 22 of form takes place additional provided on the holding element 18.

Dans le mode de mise en oeuvre représenté sur la figure 10, l'extrémité active du ressort 9' se termine par une fourche à deux dents 25,25' et l'extrémité correspondante de l'élément presseur 3 est creusée de deux lumières 13,13' qui sont destinées à laisser passer ces extrémités lorsque l'élément presseur 3 effectue son mouvement de pivotement vers l'arrière.In the embodiment shown in the Figure 10, the active end of the spring 9 'ends with a fork with two tines 25.25 'and the end corresponding to the pressing element 3 is hollowed out by two lights 13,13 'which are intended to let these ends when the pressing element 3 performs its pivoting movement backwards.

Dans ce mode de mise en oeuvre, le prolongement de l'élément presseur 3 au-delà de l'axe de rotation 5 est constitué d'une partie axiale 27 et de deux éléments transversaux 29,29' sur lesquels le ressort 9' vient en appui pour solliciter l'élément presseur 3 au-delà de la position d'équilibre instable représentée sur les figures 3 et 4 afin d'amener celui-ci soit vers la position de fermeture soit vers la position d'ouverture.In this embodiment, the extension of the pressing element 3 beyond the axis of rotation 5 is consisting of an axial part 27 and two elements transverse 29,29 'on which the spring 9' comes in support to urge the pressing element 3 beyond the unstable equilibrium position shown in Figures 3 and 4 in order to bring it either to the position of closing either towards the open position.

Dans un autre mode de mise en oeuvre représenté schématiquement sur la figure 11, le fermoir suivant l'invention est constitué de trois éléments, à savoir d'un élément support 1', qui est pourvu de deux extrémités actives identiques, c'est-à-dire d'extrémités comportant une articulation 5 constituée par un axe transversal, de façon à recevoir à pivotement à chacune de ses extrémités un élément presseur 3,3' du même type que celui décrit précédemment. Un tel mode de mise en oeuvre est particulièrement intéressant, notamment lorsque l'on souhaite mettre en oeuvre des bracelets-montres métalliques puisqu'il est possible dès lors de disposer ainsi d'un fermoir rigoureusement situé au milieu du bracelet de la montre.In another embodiment shown schematically in Figure 11, the following clasp the invention consists of three elements, namely a support element 1 ', which is provided with two ends identical active ingredients, i.e. ends comprising an articulation 5 constituted by a transverse axis, of so as to receive pivotally at each of its ends a pressing element 3.3 'of the same type as that described previously. One such implementation is particularly interesting, especially when wishes to use metallic watch straps since it is therefore possible to have a clasp rigorously located in the middle of the bracelet shows.

Bien que l'ont ait appliqué la présente invention à des exemples de mise en oeuvre relatifs à des bracelets-montres, il est bien évident que, sans sortir du cadre de la présente invention, on pourrait utiliser de tels fermoirs dans d'autres types d'application, tels que notamment des ceintures, des sacs à main, des bagages etc...Although the present invention has been applied to examples of implementation relating to watch straps, it is obvious that, without going beyond the ambit of the present invention one could use such clasps in other types of application, such as including belts, handbags, luggage etc ...

Claims (9)

  1. Closing device, particularly for watch band, of the type comprising at least two elements (1, 3), namely a first element, or support element (1, 1'), and a second element, or presser element (3), which are joined at one of their ends by an articulation (5), their other end (1a, 3a) being respectively fixed on the free ends of two parts to be joined, the support element (1, 1') comprising a deflection spring (9, 9') which urges an extension of the presser element (3) beyond the articulation (5), in two stable positions of equilibrium, namely a first position, or position of closure, in which it applies the presser element (3) on the support element (1), and a second position, or position of opening, in which it spaces the two elements (1, 3) apart from each other, characterized in that the presser element (3) comprises at least one slot (13) adjacent the articulation (5), of which the dimensions are such that it allows the deflection spring (9), when the presser element (3) is in the position of opening, to traverse this slot (13) so as no longer to urge said presser element (3).
  2. Closing device according to Claim 1, characterized in that the parts to be joined are constituted by bands and the support element (1) and the presser element (3) are curved.
  3. Closing device according to one of the preceding Claims, characterized in that the shape of the presser element (3) is substantially similar to that of the support element (1), and its width is such that, in the position of closure, it may fit at least partly in a housing (2) provided in the support element (1).
  4. Closing device according to Claim 3, characterized in that the articulation is constituted by a traverse pin (5) which is fast with the support element (1) and which is slightly offset outwardly therefrom in the direction of the presser element (3) when the latter is in the position of closure.
  5. Closing device according to any one of the preceding Claims, characterized in that the deflection spring (9) is fixed by rivetting on the support element (1).
  6. Closing device according to any one of the preceding Claims, characterized in that the deflection spring (9) is fixed by fitting on the support element (1).
  7. Closing device according to Claim 6, characterized in that the outer face of the active end of the spring (9) is in abutment on the articulation (5) when the presser element (3) is in the position of opening and the outer face of the other end of the spring (9) is in abutment on the inner face of the support element (1).
  8. Closing device according to Claim 7, characterized in that the inner face of the central part of the spring (9) is in abutment on an outer face of a holding element (18) fast with the support element (1).
  9. Closing device according to any one of the preceding Claims, characterized in that it is constituted by three elements, namely a support element (1') comprising at each of its ends an articulation (5) on which is mounted a presser element (3), the support element (1') comprising at each of its ends a deflection spring (9) which urges an extension of the presser element (3) beyond the articulation (5) in two stable positions of equilibrium, namely a position of closure in which it applies each presser element (3) on the support element (1') and a position of opening in which it spaces the presser elements (3) apart from the support element (1, 1'), each presser element (3) comprising at least one slot (13) adjacent the articulation (5), of which the dimensions are such that it allows the deflection spring (9), when the presser element (3) is in the position of opening, to traverse this slot (13) so as no longer to urge the presser element (3).
EP98400712A 1997-03-26 1998-03-26 Automatic closing device for watch bands Expired - Lifetime EP0867132B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9703690 1997-03-26
FR9703690A FR2761240B1 (en) 1997-03-26 1997-03-26 AUTOMATIC CLASP, PARTICULARLY FOR A WATCH STRAP

Publications (2)

Publication Number Publication Date
EP0867132A1 EP0867132A1 (en) 1998-09-30
EP0867132B1 true EP0867132B1 (en) 2002-10-23

Family

ID=9505188

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98400712A Expired - Lifetime EP0867132B1 (en) 1997-03-26 1998-03-26 Automatic closing device for watch bands

Country Status (4)

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EP (1) EP0867132B1 (en)
AT (1) ATE226405T1 (en)
DE (1) DE69808822T2 (en)
FR (1) FR2761240B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2842081B1 (en) * 2002-07-11 2004-08-27 Chatelain Sa G & F AUTOMATIC CLASP FOR A WATCH STRAP
EP1464245A1 (en) * 2003-04-03 2004-10-06 Jörg M. Hysek Fastener with folding buckle

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR518031A (en) * 1919-05-28 1921-05-18 Cornu & Cie Bracelet clasp
DE591434C (en) * 1932-01-16 1934-01-22 Georg Kurz Jun Folding device for expandable bracelets, especially watch bracelets
CH471556A (en) * 1968-04-22 1969-04-30 Zelcaux Henri Clasp for bracelet
FR2710503A1 (en) * 1993-09-29 1995-04-07 Dalacopoulos Alexandre Adjustable clamping device for watch bracelets (straps)

Also Published As

Publication number Publication date
DE69808822D1 (en) 2002-11-28
EP0867132A1 (en) 1998-09-30
FR2761240B1 (en) 1999-04-23
DE69808822T2 (en) 2003-08-07
ATE226405T1 (en) 2002-11-15
FR2761240A1 (en) 1998-10-02

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