EP1247469B1 - Bracelet closure having two push buttons provided with guidance means therebetween - Google Patents

Bracelet closure having two push buttons provided with guidance means therebetween Download PDF

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Publication number
EP1247469B1
EP1247469B1 EP20010420070 EP01420070A EP1247469B1 EP 1247469 B1 EP1247469 B1 EP 1247469B1 EP 20010420070 EP20010420070 EP 20010420070 EP 01420070 A EP01420070 A EP 01420070A EP 1247469 B1 EP1247469 B1 EP 1247469B1
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EP
European Patent Office
Prior art keywords
clasp
pushers
stretcher
organ
relative
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
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EP20010420070
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German (de)
French (fr)
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EP1247469A1 (en
Inventor
Franck Chanonat
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TAG Heuer SA
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TAG Heuer SA
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Publication date
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Priority to EP20010420070 priority Critical patent/EP1247469B1/en
Publication of EP1247469A1 publication Critical patent/EP1247469A1/en
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Publication of EP1247469B1 publication Critical patent/EP1247469B1/en
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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

Definitions

  • the invention relates to a clasp of the type of those used watchmaking, leather goods or jewelery, to allow the opening and the closing a watch strap, a purse or a necklace.
  • the invention relates more particularly to a clasp comprising a stretcher and a folding arm or a removable button.
  • a folding clasp is meeting in the watch industry for example, while a detachable button clasp meet for example in leather goods.
  • the clasp is of the type particular to two pushers moving in opposite directions relative to the stretcher against the compression of a return member, to lock or unlock the folding arm or the button relative to the stretcher during the closing or the opening of the clasp.
  • a clasp of this particular type is known from the patent application European EP-A-586 156.
  • the folding arm of the clasp is movable relative to the stretcher about an axis parallel to the direction of travel relative of the two pushers.
  • the folding arm is equipped with hooks that come in taken with hooks secured to one and the other pushers. The hooks in taken to lock the folding arm relative to the stretcher during the closure of the clasp.
  • both pushers are moved in the opposite direction to the stretcher against the compression of an organ of reminder to release the hooks of the folding arm from their grip with the hooks solidary pushers.
  • the pushers move in translation and in direction contrary to the stretcher by following walls of the stretcher defining a section of movement of the pushers.
  • each pusher moves with a certain clearance with respect to the section of displacement formed by the walls of the stretcher.
  • the addition of the moving games of the one and the other pushers can lead to an incomplete catch of the arms of the folding arm relative to the hooks of one or the other pusher.
  • Such a risk of inadvertent opening must absolutely be reduced to minimum, and the risk reduction is all the more important as the clasp is used in a watch bracelet or in a necklace of greater value.
  • Document CH 626518 discloses a clasp of the above type comprising a guide member housed in a first and a second housing guides formed in one and the other pushers to keep the two aligned pushers during their relative movement relative to the stretcher.
  • the organ of reminder a coil spring, is mounted around the guide slide and the outside guide housing to abut against one and the other tappets. This arrangement certainly increases the locking security of the clasp but has the disadvantage of not protecting the return member mounted around the guide member.
  • the two pushers of the clasp are maintained aligned by the guide member as they move relative to the stretcher.
  • the alignment of the two pushers minimizes the play of moving one pusher relative to the other and thus contributes to a better hooks secured to the pushers with the hooks of the folding arm or removable button. This results in an increase in lock security of the folding arm or removable button relative to the stretcher.
  • the document CH 646314 describes a clasp similar to that described by the previous D3 document.
  • the coil spring is mounted around the slide and outside the guide housing pushers to come in stop against one of these pushers.
  • DE 19615462 discloses a clasp comprising an organ of two-part guidance. Each part is fixed in a dwelling corresponding of the one and the other pushers. Both parts slide one by compared to each other against the compression of a coil spring mounted around the guide member. The corresponding dwellings in which the two parts of the guide member open, in each of the two pushers, by drilling larger diameter than housing. The spring comes in stop against the bottom of each of the two holes remaining outside the corresponding housing.
  • EP 914781 discloses a clasp comprising two pushers mounted at the ends of a fork and guided relative to each other by a spring bar.
  • Said bar comprises a cylindrical tube housed in a first and second guide housings of one and the other pushers for serve as a guide member and a coil spring housed in the cylindrical tube.
  • the spring is compressed by two studs mounted at the ends of the cylindrical tube.
  • the return member is housed inside the cylindrical tube serving as a guide.
  • the bar spring makes it possible to protect the coil spring with the aid of the cylindrical tube of during the compression of the coil spring, the displacement of the nipples relative to the cylindrical tube creates additional friction compared to that created by the relative displacement of the pushers with respect to the cylindrical tube.
  • One of the aims of the invention is therefore to design a clasp with greater locking safety by means of a guide.
  • the invention more particularly aims at modifying a clasp of this type to better protect the return member, without however increasing the friction of the guide member with respect to the pushers during compression of the return member.
  • Another object of the invention is that the clasp must can be manufactured by economical manufacturing processes and in particular by a metal injection molding process, said MIM process.
  • the subject of the invention is a clasp comprising a stretcher, a folding arm or a removable button and two pushers moving in the opposite direction relative to the stretcher against the compression of a return member for lock or unlock the folding arm or detachable button in relation to stretcher when respectively closing or opening the clasp, a guiding member being housed in a first and a second housing of guiding one and the other pushers to keep aligned the two pushers during their relative movement relative to the stretcher, characterized in that the return member is housed in the guide housing of one or the other button.
  • the guiding member is interposed abutting between two return members. If these are identical, the position of the guide member in the guide housing of one or the other push is substantially the same for one and the other pushers during their relative displacement against the compression of the two return members.
  • the subject of the invention is also a method of manufacturing a clasp pusher.
  • a clasp comprises, with reference to FIG. 1, a stretcher 3 and a first and second folding arms 51 articulated relative to the stretcher around an axis of rotation 13.
  • the clasp is shown in an open position and the arrow F indicates the direction of rotation of the folding arms relative to the stretcher when closing the clasp.
  • the clasp comprises, with reference to FIGS. 2 to 6, a first and a second pushers 1A and 1B moving in opposite directions relative to each other by 3.
  • the two pushers 1A and 1B move in relation to the stretcher 3 in a direction parallel to the articulation axes 13 of the arms leaflets 51.
  • Hooks 15 integral with the folding arms 51 come into engagement with hooks 17 secured to one and the other pushers.
  • the hooks engaged make it possible to lock each folding arm 51 with respect to the stretcher 3 when closing the clasp.
  • the two pushers 1A and 1B are moved in the opposite direction to stretcher 3 against compression of a return member 61 to release the hooks 15 of the folding arms of their taken with the hooks 17 secured to the pushers.
  • a guide pin 91 is housed in a first and a second guide housing 11A and 11B respectively of the first and the second pushers 1A and 1B.
  • the guide pin 91 is interposed in abutment between two helical springs 61 housed for one in the first housing of 11A of the first pusher 1A and for the other, in the second housing of 11B guide of the second pusher 1B.
  • the guiding pin 91 makes it possible to maintain aligned the two pushers 1A and 1B during their relative movement relative to the stretcher 3 against the compression of the two coil springs 61.
  • the two pushers 1A and 1B are kept aligned by the guide pin 91 during their relative movement relative to the stretcher 3.
  • the alignment of the two pushers 1A and 1B minimizes the movement clearance of a pusher 1A relative to the other 1B and thus contributes to a better grip of hooks 17 secured to the pushers with the hooks 15 secured to the arms leaflets 51. This results in an increase in lock safety of the arms leaflets 51 relative to the stretcher.
  • FIGS. 2 to 6 discloses a clasp two guide members parallel to one another and housed respectively in two parallel guiding housings formed in each of the two pushers. It is understood that in this embodiment with two guide members, the two pusher guiding housings have the same spacing in one and the other tappets.
  • the guide pin extends inside the guide housing of each of the two pushers, over a length L which is sufficient in relation to the diameter D of the pin, for example greater than three times the diameter D of the pin. This ratio allows an optimum alignment of the two pushers, one for each relative to each other when moving relative to the stretcher.
  • a stopper retains pushers 1A and 1B inside the stretcher 3 when the folding arms 51 are unlocked in the open position of the clasp.
  • folding arms, the stretcher and the two pushers by different methods and for example by machining, stamping, or molding.
  • These parts are for example made of silver, brass, metals precious or any other non-metallic material.
  • the folding arms 51, the stretcher 3 and the pushers 1A and 1B are preferably manufactured by a method Injection molding of metal.
  • the guiding pins 91 are made of steel stainless steel, as well as coil springs 61.
  • the pin of guide 91 is movable relative to each of the two pushers 1A and 1B. We prevents the risk of galling by lubricating the interface between the pin and the guide housing of each of the two pushers.
  • guide pins are provided for different sections and for example square or oval.
  • the organs of are, for example, pads of elastomeric material or springs tires.
  • a clasp according to the invention for which the return member is housed in the guide housing of one or other of the two pushers adds to the aesthetics since the return member is no longer visible from outside. It is no longer useful to add a piece of material between the two arms leaflets when they occupy the closing position of the clasp to conceal the return member.

Description

L'invention se rapporte à un fermoir du type de ceux qui sont utilisés dans l'horlogerie, la maroquinerie ou la joaillerie, pour permettre l'ouverture et la fermeture d'un bracelet de montre, d'un sac à main ou encore d'un collier.The invention relates to a clasp of the type of those used watchmaking, leather goods or jewelery, to allow the opening and the closing a watch strap, a purse or a necklace.

L'invention se rapporte plus particulièrement à un fermoir comprenant un brancard et un bras dépliant ou un bouton amovible. Un fermoir à bras dépliant se rencontre par exemple dans l'horlogerie alors qu'un fermoir à bouton amovible se rencontre par exemple dans la maroquinerie. Le fermoir est du type particulier à deux poussoirs mobiles en sens contraire par rapport au brancard contre la compression d'un organe de rappel, pour verrouiller ou déverrouiller le bras dépliant ou le bouton par rapport au brancard lors respectivement de la fermeture ou de l'ouverture du fermoir.The invention relates more particularly to a clasp comprising a stretcher and a folding arm or a removable button. A folding clasp is meeting in the watch industry for example, while a detachable button clasp meet for example in leather goods. The clasp is of the type particular to two pushers moving in opposite directions relative to the stretcher against the compression of a return member, to lock or unlock the folding arm or the button relative to the stretcher during the closing or the opening of the clasp.

Un fermoir de ce type particulier est connu de la demande de brevet européen EP-A-586 156. Selon ce document, le bras dépliant du fermoir est mobile par rapport au brancard autour d'un axe parallèle à la direction de déplacement relatif des deux poussoirs. Le bras dépliant est muni de crochets qui viennent en prise avec des crochets solidaires de l'un et de l'autre poussoirs. Les crochets en prise permettent de verrouiller le bras dépliant par rapport au brancard lors de la fermeture du fermoir. Pour l'ouverture du fermoir, les deux poussoirs sont déplacés en sens contraire par rapport au brancard contre la compression d'un organe de rappel pour dégager les crochets du bras dépliant de leur prise avec les crochets solidaires des poussoirs.A clasp of this particular type is known from the patent application European EP-A-586 156. According to this document, the folding arm of the clasp is movable relative to the stretcher about an axis parallel to the direction of travel relative of the two pushers. The folding arm is equipped with hooks that come in taken with hooks secured to one and the other pushers. The hooks in taken to lock the folding arm relative to the stretcher during the closure of the clasp. To open the clasp, both pushers are moved in the opposite direction to the stretcher against the compression of an organ of reminder to release the hooks of the folding arm from their grip with the hooks solidary pushers.

Selon ce document, les poussoirs se déplacent en translation et en sens contraire par rapport au brancard en suivant des parois du brancard définissant une section de déplacement des poussoirs.According to this document, the pushers move in translation and in direction contrary to the stretcher by following walls of the stretcher defining a section of movement of the pushers.

La demande internationale WO-A-88/02225 décrit également un fermoir du type précédent.International Application WO-A-88/02225 also discloses a clasp of the previous type.

Dans ces fermoirs connus, chaque poussoir se déplace avec un certain jeu par rapport à la section de déplacement formée par les parois du brancard. L'addition des jeux de déplacement de l'un et de l'autre poussoirs peut conduire à une prise incomplète des crochets du bras dépliant par rapport aux crochets de l'un ou de l'autre poussoir. On ne peut alors tout à fait exclure un déverrouillage intempestif et une ouverture du fermoir, par exemple en cas de choc sur le bras dépliant. Un tel risque d'ouverture intempestif doit absolument être réduit au minimum, et la réduction du risque est d'autant plus importante que le fermoir est utilisé dans un bracelet de montre ou dans un collier de plus grande valeur.In these known clasps, each pusher moves with a certain clearance with respect to the section of displacement formed by the walls of the stretcher. The addition of the moving games of the one and the other pushers can lead to an incomplete catch of the arms of the folding arm relative to the hooks of one or the other pusher. You can not completely exclude unlocking inadvertent and an opening of the clasp, for example in case of impact on the arm flyer. Such a risk of inadvertent opening must absolutely be reduced to minimum, and the risk reduction is all the more important as the clasp is used in a watch bracelet or in a necklace of greater value.

Le document CH 626518 divulgue un fermoir du type précédent comprenant un organe de guidage logé dans un premier et un deuxième logements de guidage formés dans l'un et l'autre poussoirs pour maintenir alignés les deux poussoirs lors de leur déplacement relatif par rapport au brancard. L'organe de rappel, un ressort hélicoïdal, est monté autour de la coulisse de guidage et à l'extérieur des logements de guidage pour venir en butée contre l'un et l'autre poussoirs. Cet agencement augmente certes la sécurité de verrouillage du fermoir mais présente l'inconvénient de ne pas protéger l'organe de rappel monté autour de l'organe de guidage.Document CH 626518 discloses a clasp of the above type comprising a guide member housed in a first and a second housing guides formed in one and the other pushers to keep the two aligned pushers during their relative movement relative to the stretcher. The organ of reminder, a coil spring, is mounted around the guide slide and the outside guide housing to abut against one and the other tappets. This arrangement certainly increases the locking security of the clasp but has the disadvantage of not protecting the return member mounted around the guide member.

Selon ce document, les deux poussoirs du fermoir sont maintenus alignés par l'organe de guidage lors de leur déplacement relatif par rapport au brancard. L'alignement des deux poussoirs réduit au minimum le jeu de déplacement d'un poussoir par rapport à l'autre et contribue ainsi à une meilleure prise des crochets solidaires des poussoirs avec les crochets du bras dépliant ou du bouton amovible. Il en résulte une augmentation de la sécurité de verrouillage du bras dépliant ou du bouton amovible par rapport au brancard.According to this document, the two pushers of the clasp are maintained aligned by the guide member as they move relative to the stretcher. The alignment of the two pushers minimizes the play of moving one pusher relative to the other and thus contributes to a better hooks secured to the pushers with the hooks of the folding arm or removable button. This results in an increase in lock security of the folding arm or removable button relative to the stretcher.

Le document CH 646314 décrit un fermoir analogue à celui décrit par le document D3 précédent. En particulier, le ressort hélicoïdal est monté autour de la coulisse et à l'extérieur des logements de guidage des poussoirs pour venir en butée contre l'un et l'autre de ces poussoirs.The document CH 646314 describes a clasp similar to that described by the previous D3 document. In particular, the coil spring is mounted around the slide and outside the guide housing pushers to come in stop against one of these pushers.

Le document DE 19615462 décrit un fermoir comprenant un organe de guidage en deux parties. Chaque partie est montée fixe dans un logement correspondant de l'un et de l'autre poussoirs. Les deux parties coulissent l'une par rapport à l'autre contre la compression d'un ressort hélicoïdal monté autour de l'organe de guidage. Les logements correspondants dans lesquels sont montées les deux parties de l'organe de guidage s'ouvrent, dans chacun des deux poussoirs, par un perçage de plus grand diamètre que celui des logements. Le ressort vient en butée contre le fond de chacun des deux perçages restant à l'extérieur des logements correspondants.DE 19615462 discloses a clasp comprising an organ of two-part guidance. Each part is fixed in a dwelling corresponding of the one and the other pushers. Both parts slide one by compared to each other against the compression of a coil spring mounted around the guide member. The corresponding dwellings in which the two parts of the guide member open, in each of the two pushers, by drilling larger diameter than housing. The spring comes in stop against the bottom of each of the two holes remaining outside the corresponding housing.

Le document EP 914781 décrit un fermoir comprenant deux poussoirs montés aux extrémités d'une fourche et guidés l'un par rapport à l'autre par une barrette à ressort. Ladite barrette comprend un tube cylindrique logé dans un premier et un deuxième logements de guidage de l'un et de l'autre poussoirs pour servir d'organe de guidage et un ressort hélicoïdal logé dans le tube cylindrique. Le ressort est comprimé par deux tétons montés aux extrémités du tube cylindrique. L'organe de rappel est logé à l'intérieur du tube cylindrique servant d'organe de guidage. Ainsi, le ressort hélicoïdal et le tube cylindrique de la barrette à ressort ne sont pas comprimés l'un par l'autre lors du déplacement relatif des deux poussoirs. La compression du ressort est assurée par l'intermédiaire des tétons. La barrette à ressort permet certes de protéger le ressort hélicoïdal à l'aide du tube cylindrique de guidage, mais, lors de la compression du ressort hélicoïdal, le déplacement des tétons par rapport au tube cylindrique crée un frottement supplémentaire par rapport à celui créé par le déplacement relatif des poussoirs par rapport au tube cylindrique.EP 914781 discloses a clasp comprising two pushers mounted at the ends of a fork and guided relative to each other by a spring bar. Said bar comprises a cylindrical tube housed in a first and second guide housings of one and the other pushers for serve as a guide member and a coil spring housed in the cylindrical tube. The spring is compressed by two studs mounted at the ends of the cylindrical tube. The return member is housed inside the cylindrical tube serving as a guide. Thus, the coil spring and the cylindrical tube of the spring bar do not are not compressed one by the other during the relative movement of the two pushers. The compression of the spring is ensured by means of the nipples. The bar spring makes it possible to protect the coil spring with the aid of the cylindrical tube of during the compression of the coil spring, the displacement of the nipples relative to the cylindrical tube creates additional friction compared to that created by the relative displacement of the pushers with respect to the cylindrical tube.

L'un des buts de l'invention est par conséquent de concevoir un fermoir présentant une plus grande sécurité de verrouillage au moyen d'un organe de guidage. L'invention poursuit plus particulièrement le but de modifier un fermoir de ce type pour mieux protéger l'organe de rappel, sans toutefois augmenter le frottement de l'organe de guidage par rapport aux poussoirs lors de la compression de l'organe de rappel. L'invention poursuit un autre but en ce que le fermoir doit pouvoir être fabriqué par des procédés de fabrication économiques et notamment par un procédé de moulage par injection de métal, dit procédé MIM.One of the aims of the invention is therefore to design a clasp with greater locking safety by means of a guide. The invention more particularly aims at modifying a clasp of this type to better protect the return member, without however increasing the friction of the guide member with respect to the pushers during compression of the return member. Another object of the invention is that the clasp must can be manufactured by economical manufacturing processes and in particular by a metal injection molding process, said MIM process.

A cet effet, l'invention a pour objet un fermoir comprenant un brancard, un bras dépliant ou un bouton amovible et deux poussoirs mobiles en sens contraire par rapport au brancard contre la compression d'un organe de rappel pour verrouiller ou déverrouiller le bras dépliant ou le bouton amovible par rapport au brancard lors respectivement de la fermeture ou de l'ouverture du fermoir, un organe de guidage étant logé dans un premier et un deuxième logements de guidage de l'un et de l'autre poussoirs pour maintenir alignés les deux poussoirs lors de leur déplacement relatif par rapport au brancard, caractérisé en ce que l'organe de rappel est logé dans le logement de guidage de l'un ou de l'autre poussoir.For this purpose, the subject of the invention is a clasp comprising a stretcher, a folding arm or a removable button and two pushers moving in the opposite direction relative to the stretcher against the compression of a return member for lock or unlock the folding arm or detachable button in relation to stretcher when respectively closing or opening the clasp, a guiding member being housed in a first and a second housing of guiding one and the other pushers to keep aligned the two pushers during their relative movement relative to the stretcher, characterized in that the return member is housed in the guide housing of one or the other button.

Selon un mode préféré de réalisation de l'invention, l'organe de guidage est interposé en butée entre deux organes de rappel. Si ces derniers sont identiques, la position de l'organe de guidage dans le logement de guidage de l'un ou de l'autre poussoir est sensiblement la même pour l'un et pour l'autre poussoirs lors de leur déplacement relatif contre la compression des deux organes de rappel.According to a preferred embodiment of the invention, the guiding member is interposed abutting between two return members. If these are identical, the position of the guide member in the guide housing of one or the other push is substantially the same for one and the other pushers during their relative displacement against the compression of the two return members.

L'invention a également pour objet un procédé de fabrication d'un poussoir de fermoir.The subject of the invention is also a method of manufacturing a clasp pusher.

D'autres avantages de l'invention apparaítront à la lecture de la description d'un mode de réalisation illustré par les dessins.

  • La figure 1 est une vue générale d'un fermoir selon l'invention dans la position d'ouverture.
  • La figure 2 est une vue de dessus et partiellement en coupe d'un fermoir selon l'invention, dans une position de déverrouillage des bras dépliants.
  • La figure 3 est en vue en coupe transversale du fermoir illustré par la figure 1.
  • La figure 4 est une vue selon la coupe AA du fermoir illustré par la figure 1.
  • La figure 5 est une vue du fermoir illustré par la figure 1, dans une position de verrouillage des bras dépliants.
  • La figure 6 est une vue selon la coupe BB du fermoir illustré par la figure 4.
    • Other advantages of the invention will appear on reading the description of an embodiment illustrated by the drawings.
  • Figure 1 is a general view of a clasp according to the invention in the open position.
  • Figure 2 is a top view and partially in section of a clasp according to the invention, in an unlocked position of the folding arms.
  • Figure 3 is a cross-sectional view of the clasp illustrated in Figure 1.
  • FIG. 4 is a view according to section AA of the clasp illustrated in FIG.
  • Figure 5 is a view of the clasp illustrated in Figure 1, in a locking position of the folding arms.
  • FIG. 6 is a view according to section BB of the clasp illustrated in FIG. 4.

    • Un fermoir comprend, en référence à la figure 1, un brancard 3 et un premier et un deuxième bras dépliants 51 articulés par rapport au brancard autour d'un axe de rotation 13. Le fermoir est illustré dans une position d'ouverture et la flèche F indique le sens de pivotement des bras dépliants par rapport au brancard lors de la fermeture du fermoir.A clasp comprises, with reference to FIG. 1, a stretcher 3 and a first and second folding arms 51 articulated relative to the stretcher around an axis of rotation 13. The clasp is shown in an open position and the arrow F indicates the direction of rotation of the folding arms relative to the stretcher when closing the clasp.

    Le fermoir comprend, en référence aux figures 2 à 6, un premier et un deuxième poussoirs 1A et 1B mobiles en sens contraire l'un par rapport à l'autre par rapport au brancard 3. Les deux poussoirs 1A et 1B se déplacent par rapport au brancard 3 suivant une direction parallèle aux axes d'articulation 13 des bras dépliants 51. Des crochets 15 solidaires des bras dépliants 51 viennent en prise avec des crochets 17 solidaires de l'un et de l'autre poussoirs. Les crochets en prise permettent de verrouiller chaque bras dépliant 51 par rapport au brancard 3 lors de la fermeture du fermoir. Pour l'ouverture du fermoir, les deux poussoirs 1A et 1B sont déplacés en sens contraire par rapport au brancard 3 contre la compression d'un organe de rappel 61 pour dégager les crochets 15 des bras dépliants de leur prise avec les crochets 17 solidaires des poussoirs.The clasp comprises, with reference to FIGS. 2 to 6, a first and a second pushers 1A and 1B moving in opposite directions relative to each other by 3. The two pushers 1A and 1B move in relation to the stretcher 3 in a direction parallel to the articulation axes 13 of the arms leaflets 51. Hooks 15 integral with the folding arms 51 come into engagement with hooks 17 secured to one and the other pushers. The hooks engaged make it possible to lock each folding arm 51 with respect to the stretcher 3 when closing the clasp. To open the clasp, the two pushers 1A and 1B are moved in the opposite direction to stretcher 3 against compression of a return member 61 to release the hooks 15 of the folding arms of their taken with the hooks 17 secured to the pushers.

    Selon l'invention, une goupille de guidage 91 est logée dans un premier et un deuxième logements de guidage 11A et 11B respectivement du premier et du deuxième poussoirs 1A et 1B. La goupille de guidage 91 est interposée en butée entre deux ressorts hélicoïdaux 61 logés pour l'un dans le premier logement de guidage 11A du premier poussoir 1A et pour l'autre, dans le deuxième logements de guidage 11B du deuxième poussoir 1B.According to the invention, a guide pin 91 is housed in a first and a second guide housing 11A and 11B respectively of the first and the second pushers 1A and 1B. The guide pin 91 is interposed in abutment between two helical springs 61 housed for one in the first housing of 11A of the first pusher 1A and for the other, in the second housing of 11B guide of the second pusher 1B.

    Selon cet agencement, la goupille de guidage 91 permet de maintenir alignés les deux poussoirs 1A et 1B lors de leur déplacement relatif par rapport au brancard 3, contre la compression des deux ressorts hélicoïdaux 61. Comme indiqué précédemment, les deux poussoirs 1A et 1B sont maintenus alignés par la goupille de guidage 91 lors de leur déplacement relatif par rapport au brancard 3. L'alignement des deux poussoirs 1A et 1B réduit au minimum le jeu de déplacement d'un poussoir 1A par rapport à l'autre 1B et contribue ainsi à une meilleure prise des crochets 17 solidaires des poussoirs avec les crochets 15 solidaires des bras dépliants 51. Il en résulte une augmentation de la sécurité de verrouillage des bras dépliants 51 par rapport au brancard.According to this arrangement, the guiding pin 91 makes it possible to maintain aligned the two pushers 1A and 1B during their relative movement relative to the stretcher 3 against the compression of the two coil springs 61. indicated above, the two pushers 1A and 1B are kept aligned by the guide pin 91 during their relative movement relative to the stretcher 3. The alignment of the two pushers 1A and 1B minimizes the movement clearance of a pusher 1A relative to the other 1B and thus contributes to a better grip of hooks 17 secured to the pushers with the hooks 15 secured to the arms leaflets 51. This results in an increase in lock safety of the arms leaflets 51 relative to the stretcher.

    Le mode de réalisation illustré par les figures 2 à 6 divulgue un fermoir à deux organes de guidage parallèles l'un à l'autre et logés respectivement dans deux logements de guidage parallèles formés dans chacun des deux poussoirs. Il est entendu que dans ce mode de réalisation à deux organes de guidage, les deux logements de guidage d'un poussoir ont le même écartement dans l'un et l'autre poussoirs.The embodiment illustrated in FIGS. 2 to 6 discloses a clasp two guide members parallel to one another and housed respectively in two parallel guiding housings formed in each of the two pushers. It is understood that in this embodiment with two guide members, the two pusher guiding housings have the same spacing in one and the other tappets.

    Il convient de noter que dans le mode de réalisation illustré par les figures 2 à 6, la goupille de guidage s'étend à l'intérieur du logement de guidage de chacun des deux poussoirs, sur une longueur L qui est suffisante par rapport au diamètre D de la goupille, par exemple supérieure à trois fois le diamètre D de la goupille. Ce rapport permet un alignement optimum des deux poussoirs l'un par rapport à l'autre lors de leur déplacement relatif par rapport au brancard.It should be noted that in the embodiment illustrated by the 2 to 6, the guide pin extends inside the guide housing of each of the two pushers, over a length L which is sufficient in relation to the diameter D of the pin, for example greater than three times the diameter D of the pin. This ratio allows an optimum alignment of the two pushers, one for each relative to each other when moving relative to the stretcher.

    Un clou d'arrêt retient les poussoirs 1A et 1B à l'intérieur du brancard 3 lorsque les bras dépliants 51 sont déverrouillés dans la position d'ouverture du fermoir.A stopper retains pushers 1A and 1B inside the stretcher 3 when the folding arms 51 are unlocked in the open position of the clasp.

    Il est prévu de fabriquer les bras dépliants, le brancard et les deux poussoirs par différents procédés et par exemple par usinage, matriçage, ou moulage. Ces pièces sont par exemple fabriquées en argent, laiton, métaux précieux ou tout autre matériau non métallique.It is planned to make the folding arms, the stretcher and the two pushers by different methods and for example by machining, stamping, or molding. These parts are for example made of silver, brass, metals precious or any other non-metallic material.

    Dans le mode de réalisation illustré par les figures, les bras dépliants 51, le brancard 3 et les poussoirs 1A et 1B sont de préférence fabriqués par un procédé de moulage par injection de métal. Les goupilles de guidage 91 sont en acier inoxydable, de même que les ressorts hélicoïdaux 61.In the embodiment illustrated by the figures, the folding arms 51, the stretcher 3 and the pushers 1A and 1B are preferably manufactured by a method Injection molding of metal. The guiding pins 91 are made of steel stainless steel, as well as coil springs 61.

    Dans le mode de réalisation illustré par les figures, la goupille de guidage 91 est mobile par rapport à chacun des deux poussoirs 1A et 1B. On prévient si besoin des risques de grippage en lubrifiant l'interface entre la goupille et le logement de guidage de chacun des deux poussoirs.In the embodiment illustrated by the figures, the pin of guide 91 is movable relative to each of the two pushers 1A and 1B. We prevents the risk of galling by lubricating the interface between the pin and the guide housing of each of the two pushers.

    Il convient de noter que l'on prévoit des goupilles de guidage de différentes sections et par exemple carrée ou ovale. De même, les organes de rappel sont par exemple des plots en matériau élastomère ou des ressorts pneumatiques.It should be noted that guide pins are provided for different sections and for example square or oval. Similarly, the organs of are, for example, pads of elastomeric material or springs tires.

    Outre la sécurité de verrouillage, un fermoir selon l'invention pour lequel l'organe de rappel est logé dans le logement de guidage de l'un ou de l'autre des deux poussoirs, ajoute à l'esthétique puisque l'organe de rappel n'est plus visible de l'extérieur. Il n'est alors plus utile d'ajouter un pan de matière entre les deux bras dépliants lorsqu'ils occupent la position de fermeture du fermoir pour dissimuler l'organe de rappel.In addition to locking security, a clasp according to the invention for which the return member is housed in the guide housing of one or other of the two pushers, adds to the aesthetics since the return member is no longer visible from outside. It is no longer useful to add a piece of material between the two arms leaflets when they occupy the closing position of the clasp to conceal the return member.

    Claims (4)

    1. Clasp comprising a chassis (3), a deploying arm (51) or a removable button and two push-pieces (1A, 1B) mobile in the opposite direction relatively to the chassis (3) against compression of a returning organ (61) to lock or unlock the deploying arm (51) or removable button relatively to the chassis (3) during closing resp. opening of the clasp, a guiding organ (91) being lodged in a first (11A) and second (11B) guiding lodging of one (1A) and the other (1B) push-pieces to keep the two bush-buttons aligned during their relative displacement relatively to the chassis, characterized in that the returning organ (61) is lodged in the guiding lodging (11A, 11B) of one or the other push-piece (1A, 1B).
    2. Clasp according to claim 1, characterized in that the guiding organ (91) is interposed as banking between two returning organs (61).
    3. Clasp according to claim 1 or 2, characterized in that the guiding organ is a pin (91) and the returning organ is a helical spring (61).
    4. Clasp according to claim 1, characterized in that the deploying arm (51) or the removable button is provided with hooks (15) engaging with hooks (17) fixedly united with one (1A) and the other (1B) pushbuttons.
    EP20010420070 2001-03-27 2001-03-27 Bracelet closure having two push buttons provided with guidance means therebetween Expired - Lifetime EP1247469B1 (en)

    Priority Applications (1)

    Application Number Priority Date Filing Date Title
    EP20010420070 EP1247469B1 (en) 2001-03-27 2001-03-27 Bracelet closure having two push buttons provided with guidance means therebetween

    Applications Claiming Priority (1)

    Application Number Priority Date Filing Date Title
    EP20010420070 EP1247469B1 (en) 2001-03-27 2001-03-27 Bracelet closure having two push buttons provided with guidance means therebetween

    Publications (2)

    Publication Number Publication Date
    EP1247469A1 EP1247469A1 (en) 2002-10-09
    EP1247469B1 true EP1247469B1 (en) 2005-06-15

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    Application Number Title Priority Date Filing Date
    EP20010420070 Expired - Lifetime EP1247469B1 (en) 2001-03-27 2001-03-27 Bracelet closure having two push buttons provided with guidance means therebetween

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    Cited By (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US7748087B2 (en) 2005-01-25 2010-07-06 Lvmh Swiss Manufactures Sa Unfolding clasp for wrist band
    CN103040203A (en) * 2013-01-22 2013-04-17 黎發威 Wristwatch band fastener

    Families Citing this family (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP2813156B1 (en) * 2013-06-12 2017-04-05 Simon et Membrez S.A. Clasp for piece of jewellery or wristwatch
    DE102019216957A1 (en) * 2019-11-04 2021-05-06 Robert Bosch Gmbh Garden machine tool system

    Family Cites Families (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    CH626518A5 (en) * 1978-03-31 1981-11-30 Chatelain G Et F Sa Bracelet with closure device, particularly for a watch
    CH646314A5 (en) * 1982-06-24 1984-11-30 Chatelain G Et F Sa Bracelet with a closure device comprising folding pieces, particularly for a watch
    DE19615462C2 (en) * 1996-04-19 2000-05-31 Psp Philipp Stoehrle Philippe Watch band
    EP0914781A1 (en) * 1997-10-30 1999-05-12 Dexel S.A. Folding fastener for a bracelet

    Cited By (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US7748087B2 (en) 2005-01-25 2010-07-06 Lvmh Swiss Manufactures Sa Unfolding clasp for wrist band
    CN103040203A (en) * 2013-01-22 2013-04-17 黎發威 Wristwatch band fastener
    CN103040203B (en) * 2013-01-22 2015-01-28 黎發威 Wristwatch band fastener

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    Publication number Publication date
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