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EP2813157A1 - Clasp with extensible loop - Google Patents

Clasp with extensible loop Download PDF

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Publication number
EP2813157A1
EP2813157A1 EP14160815.8A EP14160815A EP2813157A1 EP 2813157 A1 EP2813157 A1 EP 2813157A1 EP 14160815 A EP14160815 A EP 14160815A EP 2813157 A1 EP2813157 A1 EP 2813157A1
Authority
EP
European Patent Office
Prior art keywords
blade
roller
fixed blade
axis
folding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP14160815.8A
Other languages
German (de)
French (fr)
Other versions
EP2813157B1 (en
Inventor
Vincent Zak
Guillaume Costantini
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.)
Boucledor SA
Original Assignee
Boucledor 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 Boucledor SA filed Critical Boucledor SA
Publication of EP2813157A1 publication Critical patent/EP2813157A1/en
Application granted granted Critical
Publication of EP2813157B1 publication Critical patent/EP2813157B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
    • A44C5/18—Fasteners for straps, chains or the like
    • A44C5/22—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
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
    • A44C5/18—Fasteners for straps, chains or the like
    • A44C5/20—Fasteners for straps, chains or the like for open straps, chains or the like
    • A44C5/2052—Fasteners provided with at least one push-button acting parallel to the main plane of the fastener and perpendicularly to the direction of the fastening

Definitions

  • the present invention relates to a clasp with a folding clasp for a bracelet and in particular for a watch strap.
  • a clasp of this type is for example described in the document CH 676 415 and comprises a fixed base plate at the ends of which are articulated first and second movable blades.
  • each of said movable blades is provided at its free end with a nose capable of catching on a corresponding transverse bar fixed on the fixed blade. Said bars are capable of pivoting on themselves when the nozzles are hooked.
  • the tip of the nose of said movable blade comes into contact with a generatrix of the bar.
  • the object of the present invention is to overcome these disadvantages, and to achieve a clasp folding clasp that is safe, effective, wear resistant, easy to use while remaining aesthetic and can be achieved in a wide variety of materials.
  • the present invention relates to a clasp according to claim 1, in particular, a folding clasp for a bracelet comprising a fixed blade, at least a first folding blade hinged to a first end of the fixed blade and locking means of the first blade folded in folded position on the fixed blade, characterized in that the locking means comprise at least one rigid roller pivotally mounted and sliding on an axis fixed substantially transversely on one of the fixed blade or of said at least one folding leaf and an elastic member corresponding constricting said at least one roller in a first position on the axis and at least one corresponding shoulder carried by the other of the fixed blade or said at least one folding blade and intended to cooperate with said at least one roller; in that the at least one roller has a conical portion; and in that said at least one shoulder and said conical portion of said at least one corresponding roller are shaped such that when said at least one first folding blade is folded over the fixed blade, said at least one shoulder abuts against said at least one roller and in particular against the conical portion and such that a force exerted on the first
  • a clasp with a folding clasp according to a first embodiment of the invention and as illustrated in FIG. figure 1 comprises a fixed blade 1 on which are articulated a first movable blade 2 and a second movable blade 3.
  • the fixed blade 1 has two longitudinal members 10, 11, substantially parallel.
  • the first movable blade 2 is articulated at first ends 10a, 11a, longitudinal members 10, 11 of the fixed blade 1, while the second movable blade 3 is articulated at second ends 10b, 11b, longitudinal members 10, 11 of the fixed blade 1.
  • the first and second movable blades 2, 3 are articulated to the fixed blade 1 by means, for example, of fastening bars 41. It is obvious that any other appropriate and known articulation means of those skilled in the art could be used to articulate the movable blades 2, 3 to the fixed blade 1.
  • Each of the first and second movable blades 2, 3 has a free end 20, 30.
  • These free ends 20, 30 each comprise fixing means 22 for connecting the first and second movable blades 2, 3 to a strand of a bracelet , especially to the two strands of a watch strap (not shown).
  • this bracelet can be elastic or not, in any material or have any other suitable form.
  • said fixing means 22 comprise a fixing ring 22a for receiving a fastening bar 22b of a bracelet strand, said bar 22b being held in the ring by a screw 22c.
  • the fixed blade 1 also has first and second bridges 12, 13 extending transversely between the longitudinal members 10, 11 and welded to said longitudinal members 10, 11.
  • said bridges 12, 13 could have come from a single piece with the longitudinal members 10, 11, screwed or fixed in any other suitable manner to said longitudinal members 10, 11.
  • Each of the first and second movable blades 2, 3 has a recess 21, 31 shaped to cooperate respectively with the first and second bridges 12, 13 of the fixed blade 1 when said first and second movable blades 2, 3 are in their folded position on the fixed blade 1.
  • the fixed blade 1, in particular, the longitudinal members 10, 11, the first and second bridges 12, 13 and the first and second movable blades 2, 3 are shaped so that the first and second movable blades 2, 3 can to be folded on the fixed blade 1 between the longitudinal members 10, 11 of said fixed blade 1 so that once folded, the fixed and movable blades 1, 2, 3 are essentially in the same plane and that their thickness does not exceed not that of the fixed blade 1 (see figure 3a ).
  • the clasp according to the invention further comprises locking means for locking the first and second movable blades 2, 3 in their folded position on the fixed blade 1.
  • these locking means comprise first and second rigid rollers 5, 6 slidably mounted and pivotable on an axis 7 fixed transversely to the fixed blade 1 between the longitudinal members 10, 11 and between the bridges 12, 13.
  • the axis 7 is fixed by its ends in holes 14, 15 of the longitudinal members 10, 11 respectively.
  • the first and second rollers 5, 6 are arranged to pivot freely on the axis 7.
  • the first and second rollers 5, 6 are arranged to slide longitudinally with respect to the axis 7 and are subjected to the action of a force elastic 8 which tends to constrain them in a first position.
  • the rollers 5, 6 are pushed out of the axis 7 in the direction of the longitudinal members 10, 11 respectively by a spring element 8 mounted on the axis 7 coaxially with it and forming said elastic force.
  • Each of the first and second rollers 5, 6 comprises a conical portion 51, 61.
  • the rollers 5, 6 are oriented so that the apex of their respective conical portion 51, 61 is directed towards the inside of the longitudinal members 10, 11 of the fixed blade 1.
  • the conical portions 51, 61 of the first and second rollers 5, 6 do not face each other.
  • the free end 20 of the first movable blade 2 has a first shoulder 23 and a second shoulder 24.
  • the first and second shoulders 23, 24 of the first movable blade 2 are intended to cooperate with the first and second rollers 5, 6 respectively and in particular with the conical portions 51, 61 of said rollers 5, 6.
  • the free end 30 of the second movable blade 3 has a first shoulder 33 and a second shoulder 34.
  • the first and second shoulders 33, 34 of the second movable blade 3 are also intended to cooperate with the first and second rollers 5, 6 respectively and in particular with the conical portions 51, 61 of said rollers 5, 6.
  • the shoulders 23, 24, 33, 34 of the first and second movable blades 2, 3 can be obtained for example by cutting in said movable blades 2, 3 or by any other appropriate means.
  • the first and second shoulders 23, 24 (33, 34) of the first (second) movable blade 2 (3), the rollers 5, 6 and in particular their conical portion 51, 61 and the spring 8 are shaped so that when the first (second) movable blade 2 (3) is folded over the fixed blade 1, the first and second shoulders 23, 24 (33, 34) respectively abut against the conical portions 51, 61 of the rollers 5, 6 ( figure 6a ) which are in their first position constrained by the spring 8.
  • the first and second shoulders 23, 24 each cooperate respectively with the conical portions 51, 61 of the rollers 5, 6 to force said rollers 5, 6 to move on the axis 7 against the action of the spring 8 ( figure 4b ).
  • the connection between the shoulders 23, 24 and the rollers 5, 6 is a point connection: during the displacement of the rollers 5, 6 under the pressure exerted on the first (second) movable blade 2 (3), said rollers slide on the axis 7 and can also simultaneously pivot on said axis 7.
  • the first and second movable blades 2, 3 are unfolded relative to the fixed blade 1.
  • the first movable blade 2 can be folded over the fixed blade 1 to bring the first and second shoulders 23, 24 in contact with the rollers 5, 6 and in particular their conical portion 51, 61.
  • the first and second shoulders 23, 24 abut against the rollers 5, 6. The user then exerts pressure on the first movable blade 2 perpendicular to the axis 7 and directed towards the fixed blade 1.
  • the rollers 5, 6 constrained by the first and second shoulders 23 24 slide on the axis 7 against the action of the spring 8 in a position where said first and second shoulders 23, 24 are no longer in abutment against the rollers 5, 6 and where the first movable blade 2 can be fully folded between the longitudinal members 10, 11 of the fixed blade 1.
  • the rollers 5, 6 are no longer constrained by the first and second shoulders 23, 24 and slide again on the axis 7 under the action of the spring 8 to resume their initial position in which they now prevent any movement of the first movable blade 2 relative to the fixed blade 1.
  • the second movable blade 3 is then folded and locked in the same way on the fixed blade 1. Once the two movable blades 2, 3 fully folded on the fixed blade 1 and held in this position by the rollers 5, 6 retaining the shoulders 23, 24, 33, 34, the clasp according to the first embodiment is in its locked position as illustrated in FIGS. figures 2 , 3a and 3b .
  • the locking of the first movable blade 2 is independent of the locking of the second movable blade 3 and vice versa.
  • the clasp according to the first embodiment can be locked by folding the movable blades 2, 3 successively as described above (first first and then second or vice versa) or simultaneously.
  • the user exerts a traction force on the first movable blade 2 directed perpendicularly to the axis 7 and away from the fixed blade 1 (via for example the bracelet strand which is connected thereto).
  • the rollers 5, 6 and in particular their conical portion 51, 61 are also shaped so that, under the effect of this pulling force, the first and second shoulders 23, 24 of the first blade mobile 2 come into contact with said conical portions 51, 61 and force the rollers 5, 6 to move on the axis 7 against the action of the spring 8.
  • the connection between the shoulders 23, 24 and the rollers 5, 6 is a point link.
  • the unlocking of the first movable blade 2 is independent of the unlocking of the second movable blade 3 and vice versa.
  • the clasp according to the first embodiment can be unlocked by deploying the movable blades 2, 3 successively as described above (first first and then second or vice versa) or simultaneously.
  • the rollers 5, 6 are shaped so that at any moment a cylindrical portion 52 of the first roll 5 covers a cylindrical portion 62 of the second roll 6. This makes it possible to completely hide the spring 8 and thus to protect it from dust and wear and give the clasp a more aesthetic appearance.
  • the rollers 5 ', 6' part of the locking means of the clasp each comprise a conical portion 51 ', 61'.
  • the rollers 5 ', 6' are arranged in this second embodiment so that their conical portion 51 ', 61' do not face each other.
  • the conical portions 51 ', 61' are shaped so that when the first (second) movable blade 2 (3) is folded over the fixed blade 1, the first and second shoulders 23, 24 ( 33, 34) of said first (second) movable blade 2 (3) respectively abut against the conical portions 51 ', 61' of the rollers 5 ', 6' which are in the first position under the action of the spring 8 ( figure 12a ).
  • the first and second shoulders 23, 24 each cooperate respectively with the conical portions 51 ', 61' of the rollers 5 ', 6' to constrain said rollers 5 ', 6' to move on the axis 7 'against the action of the spring 8.
  • the connection between the shoulders 23, 24 and the rollers 5 ', 6' is a point connection: during the displacement of the rollers 5 ', 6' under the pressure exerted on the first (second) movable blade 2 (3), said rollers slide on the axis 7 'and can also simultaneously pivot on said axis 7.
  • the locking of the clasp is in all respects similar to locking the clasp according to the first embodiment.
  • the rollers 5 ', 6' and in particular the conical portions 51 ', 61' are shaped so that, from the locked position of the clasp illustrated in FIG. figure 9a (The two movable blades 2, 3 locked in their folded position on the fixed blade 1), a force exerted by the user on one or both movable blades 2, 3 and directed perpendicular to the axis 7 'and s away from the fixed blade 1 does not cause the deployment of the movable blades or the opening of the clasp.
  • the rollers 5 ', 6' each have a cylindrical portion 52, 62 arranged to cooperate with the shoulders 23, 24, 33, 34 of the first and second movable blades 2, 3 in their folded position. and hold them in this position.
  • the presence of the cylindrical portions 52, 62 causes that the point link which allows closing of the clasp can not take place for its opening.
  • the clasp according to the second embodiment can not be unlocked by pulling simultaneously or successively on the movable blades 2, 3.
  • the locking means further comprise two push buttons 9.
  • Each push button 9 is fixedly secured to the end of a rod 91 slidably mounted on the axis 7 '.
  • the axis 7 ' is itself arranged to pass through the longitudinal members 10, 11 forming the fixed blade 1 via two through holes 92 in which are driven two sleeves 93 respectively.
  • the rods 91 each slide in said sleeves 93.
  • the free end 94 of each of the rods is arranged to cooperate with the rollers 5 ', 6'.
  • the user actuates the two push buttons 9 simultaneously.
  • the push buttons 9 each drive the rods 91 which slide on the axis 7 '.
  • the rollers 5 ', 6' then move on the axis 7 'against the action of the spring 8 in a position where they no longer retain the movable blades 2, 3, in particular in a position where the cylindrical portions 52, 62 no longer cooperate with the shoulders 23, 24, 33, 34 of the first and second movable blades 2, 3.
  • said movable blades 2, 3 can be fully unfolded with respect to the fixed blade 1.
  • the movable blades 2, 3 preferably have notches 25, 35 at their respective shoulders 23, 24, 33, 34 to make them adjustable and thus reduce or even eliminate the residual clearance between the components of the clasp when it is locked.
  • rollers 5 ', 6' are arranged so that in all their positions, they completely cover the spring 8, thus protecting said spring 8 from dust and wear and offering a clasp more aesthetic.
  • the force required for locking and unlocking the clasp according to the invention and as described in the first and second embodiments depends mainly on the elastic force 8.
  • the two embodiments described above comprise two movable blades respectively hinged at each end of the fixed blade. It is obvious however that in a variant the clasp according to the invention could comprise a single movable blade.
  • the locking means of the clasp according to the invention may have only one roller associated with a single pusher in the case of the second embodiment.
  • roller (s) may be carried by the blade (s) moving (s) while the shoulder (s) will be (then) then carried by the blade fixed.
  • the fixed blade of the clasp according to the invention may be integrally and have any suitable shape.
  • the two rollers are arranged on their axis so that their respective conical portion do not face each other and so that the elastic element holding them in their first position consists of a single spring acting simultaneously on the two rollers.
  • the rollers could be arranged in such a way that their respective conical portions face each other on the axis 7.
  • the first position of the rollers corresponds to a position where they are pushed against each other on the axis and the elastic element may consist of two springs respectively acting on one of the rollers to maintain it in said first position.
  • the clasp and its components are shaped so that there is no residual clearance when said clasp is in its locked position thus avoiding said components to move and to the user the feeling of an unreliable clasp.
  • the clasp according to the present invention has many advantages: its closure is easy, it is adaptable to any type of bracelet, the arrangement and operation of the locking means guarantee them good wear resistance. In addition, it has a simple construction and an optimized size since it is compact and proportioned once in the locked position while providing sufficient deployment in the unlocked position. Finally, the clasp according to the invention and in particular the fixed and movable blades can be made of a wide variety of materials.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Knives (AREA)

Abstract

La présente invention a pour objet un fermoir déployant pour bracelet comprenant une lame fixe (1), au moins une première lame dépliante (2) articulée à une première extrémité de la lame fixe (1) et des moyens de verrouillage de la première lame dépliante (2) en position repliée sur la lame fixe (1). Les moyens de verrouillage comprennent au moins un rouleau rigide (5) monté pivotant et coulissant sur un axe (7) fixé essentiellement transversalement sur l'une de la lame fixe (1) ou de la première lame dépliante (2) et un élément élastique (8) correspondant contraignant le rouleau (5) dans une première position sur l'axe (7) et au moins un épaulement (23) correspondant porté par l'autre de la lame fixe (1) ou de la première lame dépliante (2) et destiné à coopérer avec le rouleau (5). Ledit rouleau (5) présente une portion conique (51). Ledit épaulement (23) et ladite portion conique (51) dudit rouleau (5) correspondant sont conformés de sorte que lorsque ladite première lame dépliante (2) est repliée sur la lame fixe (1), ledit épaulement (23) vient en butée contre ledit rouleau (5) et notamment contre la portion conique (51) et de sorte qu'une force exercée sur la première lame dépliante (2) essentiellement perpendiculairement à l'axe (7) et dirigée vers ladite lame fixe (1) entraîne le déplacement dudit rouleau (5) sur l'axe (7) contre l'action de l'élément élastique correspondant (8), ledit rouleau (5) étant contraint par ledit épaulement (23) correspondant coopérant avec la portion conique (51) dudit rouleau (5), dans une seconde position dans laquelle ledit épaulement (23) correspondant n'est plus en butée contre ladite portion conique (51), ladite première lame dépliante (2) pouvant être complètement rabattue sur la lame fixe (1). Ledit rouleau (5) est alors rappelé dans sa première position par l'élément élastique (8) correspondant pour retenir la première lame dépliante (2) et empêcher tout mouvement de celle-ci par rapport à la lame fixe.The present invention relates to a folding clasp for a bracelet comprising a fixed blade (1), at least a first folding blade (2) hinged to a first end of the fixed blade (1) and locking means of the first folding blade (2) in the folded position on the fixed blade (1). The locking means comprise at least one rigid roller (5) pivotally mounted and sliding on an axis (7) fixed essentially transversely to one of the fixed blade (1) or the first folding blade (2) and an elastic element (8) corresponding binding the roll (5) in a first position on the axis (7) and at least one corresponding shoulder (23) carried by the other of the fixed blade (1) or the first folding blade (2 ) and intended to cooperate with the roller (5). Said roller (5) has a conical portion (51). Said shoulder (23) and said conical portion (51) of said corresponding roller (5) are shaped so that when said first folding blade (2) is folded over the fixed blade (1), said shoulder (23) abuts against said roller (5) and in particular against the conical portion (51) and so that a force exerted on the first folding blade (2) substantially perpendicular to the axis (7) and directed towards said fixed blade (1) causes the moving said roller (5) on the axis (7) against the action of the corresponding elastic element (8), said roller (5) being constrained by said corresponding shoulder (23) cooperating with the conical portion (51) of said roller (5), in a second position in which said corresponding shoulder (23) is no longer in abutment against said conical portion (51), said first folding blade (2) being completely folded over the fixed blade (1). Said roller (5) is then returned in its first position by the corresponding elastic element (8) to retain the first folding blade (2) and prevent any movement thereof relative to the fixed blade.

Description

La présente invention a pour objet un fermoir à boucle déployante pour bracelet et notamment pour bracelet de montre.The present invention relates to a clasp with a folding clasp for a bracelet and in particular for a watch strap.

Un fermoir de ce type est par exemple décrit dans le document CH 676 415 et comporte une lame de base fixe aux extrémités de laquelle sont articulées une première et une seconde lames mobiles. Pour bloquer les lames mobiles en position repliée sur la lame fixe, chacune desdites lames mobiles est pourvue à son extrémité libre d'un bec susceptible de venir s'accrocher sur une barrette transversale correspondante fixée sur la lame fixe. Lesdites barrettes sont susceptibles de pivoter sur elles-mêmes quand les becs viennent s'y accrocher. Quand une lame mobile est repliée sur la lame fixe, la pointe du bec de ladite lame mobile vient en contact avec une génératrice de la barrette. En pressant sur la lame mobile et sur le bec, une force est exercée sur la barrette qui pivote jusqu'à ce qu'elle se trouve bloquée au fond du logement formé par le bec. Les lames mobiles travaillent donc par élasticité et par glissement pour la fermeture du fermoir. Ce type de fermeture impose donc des contraintes particulières sur les lames mobiles afin de leur conférer l'élasticité nécessaire. De plus, bien que la résistance à l'usure d'un tel fermoir soit bonne, la pointe du bec ainsi que les barrettes sont des éléments présentant une certaine fragilité et une plus faible résistance à l'usure.A clasp of this type is for example described in the document CH 676 415 and comprises a fixed base plate at the ends of which are articulated first and second movable blades. To lock the movable blades in the folded position on the fixed blade, each of said movable blades is provided at its free end with a nose capable of catching on a corresponding transverse bar fixed on the fixed blade. Said bars are capable of pivoting on themselves when the nozzles are hooked. When a movable blade is folded over the fixed blade, the tip of the nose of said movable blade comes into contact with a generatrix of the bar. By pressing on the movable blade and on the spout, a force is exerted on the bar which pivots until it is locked at the bottom of the housing formed by the spout. The movable blades therefore work by elasticity and sliding to close the clasp. This type of closure therefore imposes particular constraints on the movable blades in order to give them the necessary elasticity. In addition, although the wear resistance of such a clasp is good, the tip of the nose and the bars are elements having a certain fragility and a lower resistance to wear.

Le but de la présente invention est de remédier à ces inconvénients, et de réaliser un fermoir à boucle déployante qui soit sûr, efficace, résistant à l'usure, facile d'utilisation tout en restant esthétique et pouvant être réalisé dans une grande variété de matériaux.The object of the present invention is to overcome these disadvantages, and to achieve a clasp folding clasp that is safe, effective, wear resistant, easy to use while remaining aesthetic and can be achieved in a wide variety of materials.

La présente invention a pour objet un fermoir selon la revendication 1, en particulier, un fermoir déployant pour bracelet comprenant une lame fixe, au moins une première lame dépliante articulée à une première extrémité de la lame fixe et des moyens de verrouillage de la première lame dépliante en position repliée sur la lame fixe, caractérisé par le fait que les moyens de verrouillage comprennent au moins un rouleau rigide monté pivotant et coulissant sur un axe fixé essentiellement transversalement sur l'une de la lame fixe ou de ladite au moins une première lame dépliante et un élément élastique correspondant contraignant ledit au moins un rouleau dans une première position sur l'axe et au moins un épaulement correspondant porté par l'autre de la lame fixe ou de ladite au moins une première lame dépliante et destiné à coopérer avec ledit au moins un rouleau ; par le fait que ledit au moins un rouleau présente une portion conique ; et par le fait que ledit au moins un épaulement et ladite portion conique dudit au moins un rouleau correspondant sont conformés de sorte que lorsque ladite au moins une première lame dépliante est repliée sur la lame fixe, ledit au moins un épaulement vient en butée contre ledit au moins un rouleau et notamment contre la portion conique et de sorte qu'une force exercée sur la première lame dépliante essentiellement perpendiculairement à l'axe et dirigée vers ladite lame fixe entraîne le déplacement dudit au moins un rouleau sur l'axe contre l'action de l'élément élastique correspondant, ledit au moins un rouleau étant contraint par ledit au moins un épaulement correspondant coopérant avec la portion conique dudit au moins un rouleau, dans une seconde position dans laquelle ledit au moins un épaulement correspondant n'est plus en butée contre ladite portion conique, ladite au moins une première lame dépliante pouvant être complètement rabattue sur la lame fixe et de sorte que ledit au moins un rouleau rappelé dans sa première position par l'élément élastique correspondant retienne la première lame dépliante et empêche tout mouvement de celle-ci par rapport à la lame fixe.The present invention relates to a clasp according to claim 1, in particular, a folding clasp for a bracelet comprising a fixed blade, at least a first folding blade hinged to a first end of the fixed blade and locking means of the first blade folded in folded position on the fixed blade, characterized in that the locking means comprise at least one rigid roller pivotally mounted and sliding on an axis fixed substantially transversely on one of the fixed blade or of said at least one folding leaf and an elastic member corresponding constricting said at least one roller in a first position on the axis and at least one corresponding shoulder carried by the other of the fixed blade or said at least one folding blade and intended to cooperate with said at least one roller; in that the at least one roller has a conical portion; and in that said at least one shoulder and said conical portion of said at least one corresponding roller are shaped such that when said at least one first folding blade is folded over the fixed blade, said at least one shoulder abuts against said at least one roller and in particular against the conical portion and such that a force exerted on the first folding blade substantially perpendicular to the axis and directed towards said fixed blade causes the displacement of said at least one roller on the axis against the action of the corresponding elastic element, said at least one roller being constrained by said at least one corresponding shoulder cooperating with the conical portion of said at least one roller, in a second position in which said at least one corresponding shoulder is no longer abutment against said conical portion, said at least one first folding blade being able to be completely folded over the fixed blade and so that said at least one roller biased into its first position by the corresponding elastic member retains the first folding blade and prevents any movement thereof relative to the fixed blade.

Les dessins annexés illustrent schématiquement et à titre d'exemple plusieurs formes d'exécution d'un fermoir à boucle déployante selon la présente invention.

  • La figure 1 illustre une première forme d'exécution du fermoir selon l'invention en position ouverte, les lames du fermoir étant déployées.
  • La figure 2 est une vue de dessus du fermoir selon la première forme d'exécution en position fermée.
  • Les figures 3a, 3b sont des vues en coupe selon les axes A-A et B-B respectivement du fermoir illustré à la figure 2.
  • Les figures 4a, 4b sont des vues en coupe selon les axes A-A et B-B respectivement du fermoir illustré à la figure 2 en phase d'ouverture.
  • Les figures 5a, 5b sont des vues en coupe selon les axes A-A et B-B respectivement du fermoir illustré à la figure 2 en position ouverte.
  • Les figures 6a, 6b sont des vues en coupe selon les axes A-A et B-B respectivement du fermoir illustré à la figure 2 en phase de fermeture.
  • La figure 7 illustre une seconde forme d'exécution du fermoir selon l'invention en position ouverte, les lames du fermoir étant déployées.
  • La figure 8 est une vue de dessus du fermoir selon la seconde forme d'exécution en position fermée.
  • Les figures 9a, 9b sont des vues en coupe selon les axes A-A et B-B respectivement du fermoir illustré à la figure 8.
  • Les figures 10a, 10b sont des vues en coupe selon les axes A-A et B-B respectivement du fermoir illustré à la figure 8 en phase d'ouverture.
  • Les figures 11a, 11b sont des vues en coupe selon les axes A-A et B-B respectivement du fermoir illustré à la figure 8 en position ouverte.
  • Les figures 12a, 12b sont des vues en coupe selon les axes A-A et B-B respectivement du fermoir illustré à la figure 8 en phase de fermeture.
The accompanying drawings illustrate schematically and by way of example several embodiments of a clasp folding clasp according to the present invention.
  • The figure 1 illustrates a first embodiment of the clasp according to the invention in the open position, the clasp blades being deployed.
  • The figure 2 is a top view of the clasp according to the first embodiment in the closed position.
  • The Figures 3a, 3b are views in section along the axes AA and BB respectively of the clasp illustrated in FIG. figure 2 .
  • The Figures 4a, 4b are views in section along the axes AA and BB respectively of the clasp illustrated in FIG. figure 2 in the opening phase.
  • The Figures 5a, 5b are views in section along the axes AA and BB respectively of the clasp illustrated in FIG. figure 2 in open position.
  • The Figures 6a, 6b are views in section along the axes AA and BB respectively of the clasp illustrated in FIG. figure 2 in the closing phase.
  • The figure 7 illustrates a second embodiment of the clasp according to the invention in the open position, the clasp blades being deployed.
  • The figure 8 is a top view of the clasp according to the second embodiment in closed position.
  • The Figures 9a, 9b are views in section along the axes AA and BB respectively of the clasp illustrated in FIG. figure 8 .
  • The Figures 10a, 10b are views in section along the axes AA and BB respectively of the clasp illustrated in FIG. figure 8 in the opening phase.
  • The Figures 11a, 11b are views in section along the axes AA and BB respectively of the clasp illustrated in FIG. figure 8 in open position.
  • The Figures 12a, 12b are views in section along the axes AA and BB respectively of the clasp illustrated in FIG. figure 8 in the closing phase.

Un fermoir à boucle déployante selon une première forme d'exécution de l'invention et tel qu'illustré à la figure 1 comprend une lame fixe 1 sur laquelle sont articulées une première lame mobile 2 et une seconde lame mobile 3.A clasp with a folding clasp according to a first embodiment of the invention and as illustrated in FIG. figure 1 comprises a fixed blade 1 on which are articulated a first movable blade 2 and a second movable blade 3.

De préférence, la lame fixe 1 présente deux longerons 10, 11, essentiellement parallèles. La première lame mobile 2 est articulée à des premières extrémités 10a, 11 a, des longerons 10, 11 de la lame fixe 1, tandis que la seconde lame mobile 3 est articulée à des secondes extrémités 10b, 11 b, des longerons 10, 11 de la lame fixe 1. Les première et seconde lames mobiles 2, 3 sont articulées à la lame fixe 1 au moyen par exemple de barrettes de fixation 41. Il est évident que tout autre moyen d'articulation approprié et connu de l'homme du métier pourrait être utilisé pour articuler les lames mobiles 2, 3 à la lame fixe 1.Preferably, the fixed blade 1 has two longitudinal members 10, 11, substantially parallel. The first movable blade 2 is articulated at first ends 10a, 11a, longitudinal members 10, 11 of the fixed blade 1, while the second movable blade 3 is articulated at second ends 10b, 11b, longitudinal members 10, 11 of the fixed blade 1. The first and second movable blades 2, 3 are articulated to the fixed blade 1 by means, for example, of fastening bars 41. It is obvious that any other appropriate and known articulation means of those skilled in the art could be used to articulate the movable blades 2, 3 to the fixed blade 1.

Chacune des première et seconde lames mobiles 2, 3 présente une extrémité libre 20, 30. Ces extrémités libres 20, 30 comprennent chacune des moyens de fixation 22 permettant de relier les première et seconde lames mobiles 2, 3 à un brin d'un bracelet, notamment aux deux brins d'un bracelet de montre (non illustré). De manière évidente pour l'homme du métier, ce bracelet peut être élastique ou non, en toute matière ou avoir tout autre forme appropriée. Dans cette première forme d'exécution, lesdits moyens de fixation 22 comprennent un anneau de fixation 22a destiné à recevoir une barrette de fixation 22b d'un brin de bracelet, ladite barrette 22b étant maintenue dans l'anneau par une vis 22c.Each of the first and second movable blades 2, 3 has a free end 20, 30. These free ends 20, 30 each comprise fixing means 22 for connecting the first and second movable blades 2, 3 to a strand of a bracelet , especially to the two strands of a watch strap (not shown). Obviously for the skilled person, this bracelet can be elastic or not, in any material or have any other suitable form. In this first embodiment, said fixing means 22 comprise a fixing ring 22a for receiving a fastening bar 22b of a bracelet strand, said bar 22b being held in the ring by a screw 22c.

De préférence, la lame fixe 1 présente encore des premier et second ponts 12, 13 s'étendant transversalement entre les longerons 10, 11 et soudés auxdits longerons 10, 11. En variante, lesdits ponts 12, 13 pourraient être venus d'une pièce avec les longerons 10, 11, vissés ou fixés de toute autre manière appropriée auxdits longerons 10, 11. Chacune des première et seconde lames mobiles 2, 3 présente un évidemment 21, 31 conformés pour coopérer avec respectivement les premier et second ponts 12, 13 de la lame fixe 1 lorsque lesdites première et seconde lames mobiles 2, 3 sont dans leur position repliée sur la lame fixe 1.Preferably, the fixed blade 1 also has first and second bridges 12, 13 extending transversely between the longitudinal members 10, 11 and welded to said longitudinal members 10, 11. In a variant, said bridges 12, 13 could have come from a single piece with the longitudinal members 10, 11, screwed or fixed in any other suitable manner to said longitudinal members 10, 11. Each of the first and second movable blades 2, 3 has a recess 21, 31 shaped to cooperate respectively with the first and second bridges 12, 13 of the fixed blade 1 when said first and second movable blades 2, 3 are in their folded position on the fixed blade 1.

De préférence, la lame fixe 1, en particulier, les longerons 10, 11, les premier et second ponts 12, 13 et les première et seconde lames mobiles 2, 3 sont conformés de sorte que les première et seconde lames mobiles 2, 3 puissent être rabattues sur la lame fixe 1 entre les longerons 10, 11 de ladite lame fixe 1 de manière à ce qu'une fois repliées, les lames fixe et mobiles 1, 2, 3 soient essentiellement dans le même plan et que leur épaisseur ne dépasse pas celle de la lame fixe 1 (voir figure 3a).Preferably, the fixed blade 1, in particular, the longitudinal members 10, 11, the first and second bridges 12, 13 and the first and second movable blades 2, 3 are shaped so that the first and second movable blades 2, 3 can to be folded on the fixed blade 1 between the longitudinal members 10, 11 of said fixed blade 1 so that once folded, the fixed and movable blades 1, 2, 3 are essentially in the same plane and that their thickness does not exceed not that of the fixed blade 1 (see figure 3a ).

Le fermoir selon l'invention comprend en outre des moyens de verrouillage permettant de bloquer les première et seconde lames mobiles 2, 3 dans leur position repliée sur la lame fixe 1. Dans la première forme d'exécution, ces moyens de verrouillage comprennent des premier et second rouleaux rigides 5, 6 montés coulissant et pivotant sur un axe 7 fixé transversalement sur la lame fixe 1 entre les longerons 10, 11 et entre les ponts 12, 13. Dans cette première forme d'exécution, l'axe 7 est fixé par ses extrémités dans des trous 14, 15 des longerons 10, 11 respectivement. Les premier et second rouleaux 5, 6 sont agencés pour pivoter librement sur l'axe 7. Les premier et second rouleaux 5, 6 sont agencés pour coulisser longitudinalement par rapport à l'axe 7 et sont soumis à l'action d'une force élastique 8 qui tend à les contraindre dans une première position. Dans la première forme d'exécution, les rouleaux 5, 6 sont poussés vers l'extérieur de l'axe 7 en direction des longerons 10, 11 respectivement par un élément ressort 8 monté sur l'axe 7 coaxialement à celui-ci et formant ladite force élastique.The clasp according to the invention further comprises locking means for locking the first and second movable blades 2, 3 in their folded position on the fixed blade 1. In the first embodiment, these locking means comprise first and second rigid rollers 5, 6 slidably mounted and pivotable on an axis 7 fixed transversely to the fixed blade 1 between the longitudinal members 10, 11 and between the bridges 12, 13. In this first embodiment, the axis 7 is fixed by its ends in holes 14, 15 of the longitudinal members 10, 11 respectively. The first and second rollers 5, 6 are arranged to pivot freely on the axis 7. The first and second rollers 5, 6 are arranged to slide longitudinally with respect to the axis 7 and are subjected to the action of a force elastic 8 which tends to constrain them in a first position. In the first embodiment, the rollers 5, 6 are pushed out of the axis 7 in the direction of the longitudinal members 10, 11 respectively by a spring element 8 mounted on the axis 7 coaxially with it and forming said elastic force.

Chacun des premier et second rouleaux 5, 6 comporte une portion conique 51, 61. Comme illustré dans les figures, dans cette première forme d'exécution, les rouleaux 5, 6 sont orientés de sorte que le sommet de leur portion conique respective 51, 61 est dirigé vers l'intérieur des longerons 10, 11 de la lame fixe 1. En d'autres termes, les portions coniques 51, 61 des premier et second rouleaux 5, 6 ne se font pas face.Each of the first and second rollers 5, 6 comprises a conical portion 51, 61. As illustrated in the figures, in this first embodiment, the rollers 5, 6 are oriented so that the apex of their respective conical portion 51, 61 is directed towards the inside of the longitudinal members 10, 11 of the fixed blade 1. In other words, the conical portions 51, 61 of the first and second rollers 5, 6 do not face each other.

L'extrémité libre 20 de la première lame mobile 2 présente un premier épaulement 23 et un second épaulement 24. Les premier et second épaulements 23, 24 de la première lame mobile 2 sont destinés à coopérer avec les premier et second rouleaux 5, 6 respectivement et en particulier avec les portions coniques 51, 61 desdits rouleaux 5, 6. De même, l'extrémité libre 30 de la seconde lame mobile 3 présente un premier épaulement 33 et un second épaulement 34. Les premier et second épaulements 33, 34 de la seconde lame mobile 3 sont également destinés à coopérer avec les premier et second rouleaux 5, 6 respectivement et en particulier avec les portions coniques 51, 61 desdits rouleaux 5, 6. Les épaulements 23, 24, 33, 34 des première et seconde lames mobiles 2, 3 peuvent être obtenus par exemple par découpe dans lesdites lames mobiles 2, 3 ou par tout autre moyen approprié.The free end 20 of the first movable blade 2 has a first shoulder 23 and a second shoulder 24. The first and second shoulders 23, 24 of the first movable blade 2 are intended to cooperate with the first and second rollers 5, 6 respectively and in particular with the conical portions 51, 61 of said rollers 5, 6. Likewise, the free end 30 of the second movable blade 3 has a first shoulder 33 and a second shoulder 34. The first and second shoulders 33, 34 of the second movable blade 3 are also intended to cooperate with the first and second rollers 5, 6 respectively and in particular with the conical portions 51, 61 of said rollers 5, 6. The shoulders 23, 24, 33, 34 of the first and second movable blades 2, 3 can be obtained for example by cutting in said movable blades 2, 3 or by any other appropriate means.

Les premier et second épaulements 23, 24 (33, 34) de la première (seconde) lame mobile 2 (3), les rouleaux 5, 6 et en particulier leur portion coniques 51, 61 et le ressort 8 sont conformés de sorte que lorsque la première (seconde) lame mobile 2 (3) est repliée sur la lame fixe 1, les premier et second épaulements 23, 24 (33, 34) viennent respectivement en butée contre les portions coniques 51, 61 des rouleaux 5, 6 (figure 6a) qui se trouvent dans leur première position contraint par le ressort 8. Lorsqu'une force (pression) est exercée sur la première (seconde) lame mobile 2 (3) essentiellement perpendiculairement à l'axe 7 et dirigée vers la lame fixe 1, les premier et second épaulements 23, 24 (33, 34) coopèrent chacun respectivement avec les portions coniques 51, 61 des rouleaux 5, 6 pour contraindre lesdits rouleaux 5, 6 à se déplacer sur l'axe 7 contre l'action du ressort 8 (figure 4b). La liaison entre les épaulements 23, 24 et les rouleaux 5, 6 est une liaison ponctuelle: lors du déplacement des rouleaux 5, 6 sous la pression exercée sur la première (seconde) lame mobile 2 (3), lesdits rouleaux glissent sur l'axe 7 et peuvent aussi simultanément pivoter sur ledit axe 7.The first and second shoulders 23, 24 (33, 34) of the first (second) movable blade 2 (3), the rollers 5, 6 and in particular their conical portion 51, 61 and the spring 8 are shaped so that when the first (second) movable blade 2 (3) is folded over the fixed blade 1, the first and second shoulders 23, 24 (33, 34) respectively abut against the conical portions 51, 61 of the rollers 5, 6 ( figure 6a ) which are in their first position constrained by the spring 8. When a force (pressure) is exerted on the first (second) movable blade 2 (3) substantially perpendicular to the axis 7 and directed towards the fixed blade 1, the first and second shoulders 23, 24 (33, 34) each cooperate respectively with the conical portions 51, 61 of the rollers 5, 6 to force said rollers 5, 6 to move on the axis 7 against the action of the spring 8 ( figure 4b ). The connection between the shoulders 23, 24 and the rollers 5, 6 is a point connection: during the displacement of the rollers 5, 6 under the pressure exerted on the first (second) movable blade 2 (3), said rollers slide on the axis 7 and can also simultaneously pivot on said axis 7.

Suite au déplacement des rouleaux 5, 6 sur l'axe 7, ceux-ci sont dans une seconde position dans laquelle les premier et second épaulements 23, 24 (33, 34) de la première (seconde) lame mobile 2 (3) ne sont plus en butée contre les portions coniques 51, 61 desdits rouleaux 5, 6 (figure 4a). Dans cette position, en maintenant la force exercée sur la première (seconde) lame mobile 2 (3), celle-ci peut être entièrement repliée sur la lame fixe 1, dans une position où le pont 12 (13) de la lame fixe 1 se trouve entièrement dans l'évidement 21 (31) de la première (seconde) lame mobile 2 (figure 3a). Dans cette position, les rouleaux 5, 6 ne sont alors plus retenus par les premier et second épaulements 23, 24 (33, 34) de la première (seconde) lame mobile 2 (3) et reprennent leur première position sous l'action du ressort 8. En se déplaçant sur l'axe 7 pour reprendre leur première position, les rouleaux 5, 6 et en particulier leur portion conique 51, 61 viennent respectivement recouvrir les premier et second épaulements 23, 24 (33, 34) de la première (seconde) lame mobile 2 (3) empêchant tout mouvement de ladite première (seconde) lame mobile 2 (3) par rapport à la lame fixe 1. Ladite première (seconde) lame mobile 2 (3) est ainsi verrouillée dans sa position repliée sur la lame fixe 1 (figures 3a et 3b). La description et les caractéristiques ci-dessus sont également valables pour la seconde lame mobile 3 et ses premier et second épaulements 33, 34.Following the displacement of the rollers 5, 6 on the axis 7, they are in a second position in which the first and second shoulders 23, 24 (33, 34) of the first (second) movable blade 2 (3) do not are more in abutment against the conical portions 51, 61 of said rollers 5, 6 ( figure 4a ). In this position, by maintaining the force exerted on the first (second) movable blade 2 (3), it can be fully folded over the fixed blade 1, in a position where the bridge 12 (13) of the fixed blade 1 is entirely in the recess 21 (31) of the first (second) movable blade 2 ( figure 3a ). In this position, the rollers 5, 6 are then no longer retained by the first and second shoulders 23, 24 (33, 34) of the first (second) movable blade 2 (3) and resume their first position under the action of the spring 8. By moving on the axis 7 to resume their first position, the rollers 5, 6 and in particular their conical portion 51, 61 respectively cover the first and second shoulders 23, 24 (33 34) of the first (second) movable blade 2 (3) preventing any movement of said first (second) movable blade 2 (3) relative to the fixed blade 1. Said first (second) movable blade 2 (3) is thus locked in its folded position on the fixed blade 1 ( Figures 3a and 3b ). The above description and features are also valid for the second movable blade 3 and its first and second shoulders 33, 34.

Le verrouillage du fermoir selon la première forme d'exécution va maintenant être décrit en référence aux figures 1 et 5a à 6b.The locking of the clasp according to the first embodiment will now be described with reference to figures 1 and 5a to 6b .

Dans la position initiale déverrouillée du fermoir selon la première forme d'exécution illustrée à la figure 1, les première et seconde lames mobiles 2, 3 sont dépliées par rapport à la lame fixe 1. A partir de cette position déverrouillée, la première lame mobile 2 peut être repliée sur la lame fixe 1 pour amener les premier et second épaulements 23, 24 au contact des rouleaux 5, 6 et en particulier de leur portion conique 51, 61. Dans cette position illustrée aux figure 6a et 6b, les premier et second épaulements 23, 24 sont en butée contre les rouleaux 5, 6. L'utilisateur exerce ensuite une pression sur la première lame mobile 2 perpendiculairement à l'axe 7 et dirigée pour vers la lame fixe 1. Sous l'effet de cette force, les rouleaux 5, 6 contraints par les premier et second épaulements 23 24 glissent sur l'axe 7 contre l'action du ressort 8 dans une position où lesdits premier et second épaulements 23, 24 ne sont plus en butée contre les rouleaux 5, 6 et où la première lame mobile 2 peut être entièrement repliée entre les longerons 10, 11 de la lame fixe 1. Dans cette position, les rouleaux 5, 6 ne sont plus contraints par les premier et second épaulements 23, 24 et glissent à nouveau sur l'axe 7 sous l'action du ressort 8 pour reprendre leur position initiale dans laquelle ils empêchent désormais tout mouvement de la première lame mobile 2 par rapport à la lame fixe 1.In the unlocked initial position of the clasp according to the first embodiment illustrated in FIG. figure 1 the first and second movable blades 2, 3 are unfolded relative to the fixed blade 1. From this unlocked position, the first movable blade 2 can be folded over the fixed blade 1 to bring the first and second shoulders 23, 24 in contact with the rollers 5, 6 and in particular their conical portion 51, 61. In this position illustrated in FIGS. Figure 6a and 6b , the first and second shoulders 23, 24 abut against the rollers 5, 6. The user then exerts pressure on the first movable blade 2 perpendicular to the axis 7 and directed towards the fixed blade 1. Under the effect of this force, the rollers 5, 6 constrained by the first and second shoulders 23 24 slide on the axis 7 against the action of the spring 8 in a position where said first and second shoulders 23, 24 are no longer in abutment against the rollers 5, 6 and where the first movable blade 2 can be fully folded between the longitudinal members 10, 11 of the fixed blade 1. In this position, the rollers 5, 6 are no longer constrained by the first and second shoulders 23, 24 and slide again on the axis 7 under the action of the spring 8 to resume their initial position in which they now prevent any movement of the first movable blade 2 relative to the fixed blade 1.

La seconde lame mobile 3 est ensuite repliée et verrouillée de la même façon sur la lame fixe 1. Une fois les deux lames mobiles 2, 3 entièrement repliées sur la lame fixe 1 et maintenues dans cette position par les rouleaux 5, 6 retenant les épaulements 23, 24, 33, 34, le fermoir selon la première forme d'exécution est dans sa position verrouillée telle qu'illustrée aux figures 2, 3a et 3b.The second movable blade 3 is then folded and locked in the same way on the fixed blade 1. Once the two movable blades 2, 3 fully folded on the fixed blade 1 and held in this position by the rollers 5, 6 retaining the shoulders 23, 24, 33, 34, the clasp according to the first embodiment is in its locked position as illustrated in FIGS. figures 2 , 3a and 3b .

Le verrouillage de la première lame mobile 2 est indépendant du verrouillage de la seconde lame mobile 3 et vice versa. Le fermoir selon la première forme d'exécution peut être verrouillé en repliant les lames mobiles 2, 3 successivement comme décrit ci-dessus (d'abord la première puis la seconde ou vice versa) ou simultanément.The locking of the first movable blade 2 is independent of the locking of the second movable blade 3 and vice versa. The clasp according to the first embodiment can be locked by folding the movable blades 2, 3 successively as described above (first first and then second or vice versa) or simultaneously.

Le déverrouillage du fermoir selon la première forme d'exécution va maintenant être décrit en détail en référence aux figures 4a et 4b.The unlocking of the clasp according to the first embodiment will now be described in detail with reference to the Figures 4a and 4b .

A partir de la position verrouillée du fermoir illustrée aux figures 2, 3a et 3b, l'utilisateur exerce une force de traction sur la première lame mobile 2 dirigée perpendiculairement à l'axe 7 et s'éloignant de la lame fixe 1 (via par exemple le brin de bracelet qui lui est relié). Dans la première forme d'exécution, les rouleaux 5, 6 et en particulier leur portion conique 51, 61 sont également conformés pour que, sous l'effet de cette force de traction, les premier et second épaulements 23, 24 de la première lame mobile 2 viennent au contact desdites portions coniques 51, 61 et contraindre les rouleaux 5, 6 à se déplacer sur l'axe 7 contre l'action du ressort 8. Comme lors du verrouillage, la liaison entre les épaulements 23, 24 et les rouleaux 5, 6 est une liaison ponctuelle.From the locked position of the clasp illustrated in figures 2 , 3a and 3b , the user exerts a traction force on the first movable blade 2 directed perpendicularly to the axis 7 and away from the fixed blade 1 (via for example the bracelet strand which is connected thereto). In the first embodiment, the rollers 5, 6 and in particular their conical portion 51, 61 are also shaped so that, under the effect of this pulling force, the first and second shoulders 23, 24 of the first blade mobile 2 come into contact with said conical portions 51, 61 and force the rollers 5, 6 to move on the axis 7 against the action of the spring 8. As during the locking, the connection between the shoulders 23, 24 and the rollers 5, 6 is a point link.

Suite au déplacement des rouleaux 5, 6 sur l'axe 7, ceux-ci sont dans une position dans laquelle les premier et second épaulements 23, 24 de la première lame mobile 2 ne sont plus en butées contre les portions coniques 51, 61 desdits rouleaux 5, 6. Dans cette position, en maintenant la force (de traction) exercée sur la première lame mobile 2, celle-ci peut être entièrement dépliée par rapport à la lame fixe 1. Il en va de même pour le déploiement de la seconde lame mobile 3. Une fois les deux lames déployées, le fermoir est à nouveau dans sa position déverrouillée illustrée à la figure 1.Following the displacement of the rollers 5, 6 on the axis 7, they are in a position in which the first and second shoulders 23, 24 of the first movable blade 2 are no longer in abutment against the conical portions 51, 61 of said 5, 6. In this position, maintaining the (pulling) force exerted on the first movable blade 2, it can be fully unfolded relative to the fixed blade 1. The same applies to the deployment of the second movable blade 3. Once the two blades are deployed, the clasp is again in its unlocked position illustrated in FIG. figure 1 .

Comme lors du verrouillage, le déverrouillage de première lame mobile 2 est indépendant du déverrouillage de la seconde lame mobile 3 et vice versa. Le fermoir selon la première forme d'exécution peut être déverrouillé en déployant les lames mobiles 2, 3 successivement comme décrit ci-dessus (d'abord la première puis la seconde ou vice versa) ou simultanément.As during locking, the unlocking of the first movable blade 2 is independent of the unlocking of the second movable blade 3 and vice versa. The clasp according to the first embodiment can be unlocked by deploying the movable blades 2, 3 successively as described above (first first and then second or vice versa) or simultaneously.

De préférence et comme illustré aux figures, les rouleaux 5, 6 sont conformés pour qu'à tout moment une portion cylindrique 52 du premier rouleau 5 recouvre une portion cylindrique 62 du second rouleau 6. Cela permet de cacher totalement le ressort 8 et ainsi de le protéger de la poussière et de l'usure et de donner un aspect plus esthétique au fermoir.Preferably and as illustrated in the figures, the rollers 5, 6 are shaped so that at any moment a cylindrical portion 52 of the first roll 5 covers a cylindrical portion 62 of the second roll 6. This makes it possible to completely hide the spring 8 and thus to protect it from dust and wear and give the clasp a more aesthetic appearance.

Une seconde forme d'exécution va maintenant être décrite en détail en référence aux figures 7 à 12b. Les éléments de cette seconde forme d'exécution similaires à ceux décrits en relation avec la première forme d'exécution sont désignés par les mêmes références.A second embodiment will now be described in detail with reference to Figures 7 to 12b . The elements of this second embodiment similar to those described in relation to the first embodiment are designated by the same references.

Dans cette seconde forme d'exécution, les rouleaux 5', 6' partie des moyens de verrouillage du fermoir comportent chacun une portion conique 51', 61'. Comme dans la première forme d'exécution, les rouleaux 5', 6' sont agencés dans cette deuxième forme d'exécution de sorte que leur portion conique 51', 61' ne se font pas face.In this second embodiment, the rollers 5 ', 6' part of the locking means of the clasp each comprise a conical portion 51 ', 61'. As in the first embodiment, the rollers 5 ', 6' are arranged in this second embodiment so that their conical portion 51 ', 61' do not face each other.

Dans cette seconde forme d'exécution, les portions coniques 51', 61' sont conformées de sorte que lorsque la première (seconde) lame mobile 2 (3) est repliée sur la lame fixe 1, les premier et second épaulements 23, 24 (33, 34) de ladite première (seconde) lame mobile 2 (3) viennent respectivement en butée contre les portions coniques 51', 61' des rouleaux 5', 6' qui se trouvent dans la première position sous l'action du ressort 8 (figure 12a). Lorsqu'une force (pression) est exercée sur la première (seconde) lame mobile 2 (3) essentiellement perpendiculairement à l'axe 7' et dirigée vers la lame fixe 1, les premier et second épaulements 23, 24 (33, 34) coopèrent chacun respectivement avec les portions coniques 51', 61' des rouleaux 5', 6' pour contraindre lesdits rouleaux 5', 6' à se déplacer sur l'axe 7' contre l'action du ressort 8. La liaison entre les épaulements 23, 24 et les rouleaux 5', 6' est une liaison ponctuelle: lors du déplacement des rouleaux 5', 6' sous la pression exercée sur la première (seconde) lame mobile 2 (3), lesdits rouleaux glissent sur l'axe 7' et peuvent aussi simultanément pivoter sur ledit axe 7.In this second embodiment, the conical portions 51 ', 61' are shaped so that when the first (second) movable blade 2 (3) is folded over the fixed blade 1, the first and second shoulders 23, 24 ( 33, 34) of said first (second) movable blade 2 (3) respectively abut against the conical portions 51 ', 61' of the rollers 5 ', 6' which are in the first position under the action of the spring 8 ( figure 12a ). When a force (pressure) is exerted on the first (second) movable blade 2 (3) substantially perpendicular to the axis 7 'and directed towards the fixed blade 1, the first and second shoulders 23, 24 (33, 34) each cooperate respectively with the conical portions 51 ', 61' of the rollers 5 ', 6' to constrain said rollers 5 ', 6' to move on the axis 7 'against the action of the spring 8. The connection between the shoulders 23, 24 and the rollers 5 ', 6' is a point connection: during the displacement of the rollers 5 ', 6' under the pressure exerted on the first (second) movable blade 2 (3), said rollers slide on the axis 7 'and can also simultaneously pivot on said axis 7.

Suite au déplacement des rouleaux 5', 6' sur l'axe 7', ceux-ci sont dans une seconde position dans laquelle les premier et second épaulements 23, 24 (33, 34) de la première (seconde) lame mobile 2 (3) ne sont plus en butées contre les portions coniques 51', 61' desdits rouleaux 5', 6'. Dans cette position, en maintenant la force exercée sur la première (seconde) lame mobile 2 (3), celle-ci peut être entièrement repliée sur la lame fixe 1, dans une position où le pont 12 (13) de la lame fixe 1 se trouve entièrement dans l'évidement 21 (31) de la première (seconde) lame mobile 2. Dans cette position, les rouleaux 5', 6' ne sont alors plus retenus par les premier et second épaulements 23, 24 (33, 34) de la première (seconde) lame mobile 2 (3) et reprennent leur première position sous l'action du ressort 8. En se déplaçant sur l'axe 7' pour reprendre leur première position, les rouleaux 5', 6' viennent respectivement recouvrir les premier et second épaulements 23, 24 (33, 34) de la première (seconde) lame mobile 2, 3 empêchant tout mouvement de ladite première (seconde) lame mobile 2 (3) par rapport à la lame fixe 1. Ladite première (seconde) lame mobile 2 (3) est ainsi verrouillée dans sa position repliée sur la lame fixe 1 (figures 9a et 9b). La description et les caractéristiques ci-dessus sont également valables pour la seconde lame mobile 3 et ses premier et second épaulements 33, 34.Following the displacement of the rollers 5 ', 6' on the axis 7 ', these are in a second position in which the first and second shoulders 23, 24 (33, 34) of the first (second) movable blade 2 ( 3) are no longer in abutment against the conical portions 51 ', 61' of said rollers 5 ', 6'. In this position, by maintaining the force exerted on the first (second) movable blade 2 (3), it can be fully folded over the fixed blade 1, in a position where the bridge 12 (13) of the fixed blade 1 is entirely in the recess 21 (31) of the first (second) movable blade 2. In this position, the rollers 5 ', 6' are then no longer retained by the first and second shoulders 23, 24 (33, 34 ) of the first (second) movable blade 2 (3) and resume their first position under the action of the spring 8. By moving on the axis 7 'to resume their first position, the rollers 5', 6 'respectively come covering the first and second shoulders 23, 24 (33, 34) of the first (second) movable blade 2, 3 preventing any movement of said first (second) movable blade 2 (3) relative to the fixed blade 1. Said first (second) movable blade 2 (3) is thus locked in its folded position on the fixed blade 1 ( Figures 9a and 9b ). The above description and features are also valid for the second movable blade 3 and its first and second shoulders 33, 34.

Ainsi, dans cette seconde forme d'exécution, le verrouillage du fermoir est en tout point similaire au verrouillage du fermoir selon la première forme d'exécution.Thus, in this second embodiment, the locking of the clasp is in all respects similar to locking the clasp according to the first embodiment.

C'est le déverrouillage du fermoir qui distingue les première et seconde formes d'exécution. En effet, dans cette seconde forme d'exécution, les rouleaux 5', 6' et en particulier les portions coniques 51', 61' sont conformés de sorte que, à partir de la position verrouillée du fermoir illustrée à la figure 9a (les deux lames mobiles 2, 3 verrouillées dans leur position repliée sur la lame fixe 1), une force exercée par l'utilisateur sur l'une ou les deux lames mobiles 2, 3 et dirigée perpendiculairement à l'axe 7' et s'éloignant de la lame fixe 1 n'entraîne pas le déploiement des lames mobiles ni l'ouverture du fermoir. Pour ce faire et comme illustré aux figures, les rouleaux 5', 6' présentent chacun une portion cylindrique 52, 62 agencée pour coopérer avec les épaulements 23, 24, 33, 34 des première et seconde lames mobiles 2, 3 dans leur position repliée et les retenir dans cette position. La présence des portions cylindriques 52, 62 entraîne que la liaison ponctuelle qui autorise la fermeture du fermoir ne peut pas avoir lieu pour son ouverture. Ainsi, contrairement à la première forme d'exécution décrite ci-dessus, le fermoir selon la seconde forme d'exécution ne peut pas être déverrouillée en tirant simultanément ou successivement sur les lames mobiles 2, 3.It is the unlocking of the clasp that distinguishes the first and second embodiments. Indeed, in this second embodiment, the rollers 5 ', 6' and in particular the conical portions 51 ', 61' are shaped so that, from the locked position of the clasp illustrated in FIG. figure 9a (The two movable blades 2, 3 locked in their folded position on the fixed blade 1), a force exerted by the user on one or both movable blades 2, 3 and directed perpendicular to the axis 7 'and s away from the fixed blade 1 does not cause the deployment of the movable blades or the opening of the clasp. To do this and as illustrated in the figures, the rollers 5 ', 6' each have a cylindrical portion 52, 62 arranged to cooperate with the shoulders 23, 24, 33, 34 of the first and second movable blades 2, 3 in their folded position. and hold them in this position. The presence of the cylindrical portions 52, 62 causes that the point link which allows closing of the clasp can not take place for its opening. Thus, unlike the first embodiment described above, the clasp according to the second embodiment can not be unlocked by pulling simultaneously or successively on the movable blades 2, 3.

Pour permettre le déverrouillage du fermoir selon la seconde forme d'exécution, les moyens de verrouillage comprennent encore deux boutons poussoirs 9. Chaque bouton poussoir 9 est fixé solidairement à l'extrémité d'une tige 91 montée coulissante sur l'axe 7'. Dans cette forme d'exécution, l'axe 7' est lui-même agencé pour traverser les longerons 10, 11 formant la lame fixe 1 via deux trous traversant 92 dans lesquels sont chassés deux manchons 93 respectivement. Les tiges 91 coulissent chacune dans lesdits manchons 93. L'extrémité libre 94 de chacune des tiges est agencée pour coopérer avec les rouleaux 5', 6'.To allow unlocking of the clasp according to the second embodiment, the locking means further comprise two push buttons 9. Each push button 9 is fixedly secured to the end of a rod 91 slidably mounted on the axis 7 '. In this embodiment, the axis 7 'is itself arranged to pass through the longitudinal members 10, 11 forming the fixed blade 1 via two through holes 92 in which are driven two sleeves 93 respectively. The rods 91 each slide in said sleeves 93. The free end 94 of each of the rods is arranged to cooperate with the rollers 5 ', 6'.

Pour déverrouiller le fermoir selon la seconde forme d'exécution, à partir de la position verrouillée du fermoir illustrée aux figures 8, 9a, 9b, l'utilisateur actionne les deux boutons poussoirs 9 simultanément. Les boutons poussoirs 9 entraînent chacun les tiges 91 qui coulissent sur l'axe 7'. Sous la contrainte desdites tiges 91, les rouleaux 5', 6' se déplacent alors sur l'axe 7' contre l'action du ressort 8 dans une position où ils ne retiennent plus les lames mobiles 2, 3, en particulier dans une position où les portions cylindriques 52, 62 ne coopèrent plus avec les épaulements 23, 24, 33, 34 des première et seconde lames mobiles 2, 3. Ainsi, lesdites lames mobiles 2, 3 peuvent être entièrement dépliées par rapport à la lame fixe 1.To unlock the clasp according to the second embodiment, from the locked position of the clasp illustrated in FIGS. figures 8 , 9a, 9b , the user actuates the two push buttons 9 simultaneously. The push buttons 9 each drive the rods 91 which slide on the axis 7 '. Under the constraint of said rods 91, the rollers 5 ', 6' then move on the axis 7 'against the action of the spring 8 in a position where they no longer retain the movable blades 2, 3, in particular in a position where the cylindrical portions 52, 62 no longer cooperate with the shoulders 23, 24, 33, 34 of the first and second movable blades 2, 3. Thus, said movable blades 2, 3 can be fully unfolded with respect to the fixed blade 1.

Comme illustré aux figures, dans cette forme d'exécution, les lames mobiles 2, 3 présentent de préférence des entailles 25, 35 au niveau de leurs épaulements respectifs 23, 24, 33, 34 afin de les rendre ajustables et ainsi diminuer voire supprimer le jeu résiduel entre les composants du fermoir lorsque celui-ci est verrouillé.As illustrated in the figures, in this embodiment, the movable blades 2, 3 preferably have notches 25, 35 at their respective shoulders 23, 24, 33, 34 to make them adjustable and thus reduce or even eliminate the residual clearance between the components of the clasp when it is locked.

Dans cette seconde forme d'exécution également, les rouleaux 5', 6' sont agencés pour que dans toutes leurs positions, ils recouvrent entièrement le ressort 8, protégeant ainsi ledit ressort 8 de la poussière et de l'usure et offrant un fermoir plus esthétique.In this second embodiment also, the rollers 5 ', 6' are arranged so that in all their positions, they completely cover the spring 8, thus protecting said spring 8 from dust and wear and offering a clasp more aesthetic.

La force nécessaire au verrouillage et au déverrouillage du fermoir selon l'invention et tel que décrit dans les première et seconde formes d'exécution dépend principalement de la force élastique 8.The force required for locking and unlocking the clasp according to the invention and as described in the first and second embodiments depends mainly on the elastic force 8.

Les deux formes d'exécution décrites ci-dessus comprennent deux lames mobiles respectivement articulées à chaque extrémité de la lame fixe. Il est évident cependant qu'en variante le fermoir selon l'invention pourrait comprendre une seule lame mobile.The two embodiments described above comprise two movable blades respectively hinged at each end of the fixed blade. It is obvious however that in a variant the clasp according to the invention could comprise a single movable blade.

De même, en variante, les moyens de verrouillage du fermoir selon l'invention pourraient ne présenter qu'un seul rouleau associé à un seul poussoir dans le cas de la seconde forme d'exécution.Similarly, alternatively, the locking means of the clasp according to the invention may have only one roller associated with a single pusher in the case of the second embodiment.

En variante également, le ou les rouleau(x) pourrai(en)t être portés par la ou les lame(s) mobile(s) tandis que le ou les épaulement(s) correspondant serai(en)t alors portés par la lame fixe.Alternatively also the roller (s) may be carried by the blade (s) moving (s) while the shoulder (s) will be (then) then carried by the blade fixed.

En variante encore, la lame fixe du fermoir selon l'invention peut être venue d'une seule pièce et présenter toute forme appropriée.In another variant, the fixed blade of the clasp according to the invention may be integrally and have any suitable shape.

Dans les deux formes d'exécution décrites ci-dessus, les deux rouleaux sont agencés sur leur axe de sorte que leur portion conique respective ne se font pas face et de sorte que l'élément élastique les maintenant dans leur première position est constitué d'un seul ressort agissant simultanément sur les deux rouleaux. En variante, les rouleaux pourraient être agencés de manière à ce que leur portion conique respective se fassent face sur l'axe 7. Dans ce cas, la première position des rouleaux correspond à une position où ils sont poussés l'un contre l'autre sur l'axe et l'élément élastique pourra être constitué de deux ressorts agissant respectivement sur un des rouleaux pour le maintenir dans ladite première position.In the two embodiments described above, the two rollers are arranged on their axis so that their respective conical portion do not face each other and so that the elastic element holding them in their first position consists of a single spring acting simultaneously on the two rollers. Alternatively, the rollers could be arranged in such a way that their respective conical portions face each other on the axis 7. In this case, the first position of the rollers corresponds to a position where they are pushed against each other on the axis and the elastic element may consist of two springs respectively acting on one of the rollers to maintain it in said first position.

De préférence, le fermoir et ses composants sont conformés pour qu'il n'y ait aucun jeu résiduel lorsque ledit fermoir est dans sa position verrouillée évitant ainsi auxdits composants de bouger et à l'utilisateur le sentiment d'un fermoir non fiable.Preferably, the clasp and its components are shaped so that there is no residual clearance when said clasp is in its locked position thus avoiding said components to move and to the user the feeling of an unreliable clasp.

Le fermoir selon la présente invention offre de nombreux avantages : sa fermeture est aisée, il est adaptable sur tout type de bracelet, l'agencement et le fonctionnement des moyens de verrouillage leur garantissent une bonne résistance à l'usure. De plus, il présente une construction simple et un encombrement optimisé puisqu'il est compact et proportionné une fois en position verrouillée tout en offrant un déploiement suffisant en position déverrouillée. Enfin, le fermoir selon l'invention et en particulier les lames fixes et mobiles peuvent être réalisés en une grande variété de matériaux.The clasp according to the present invention has many advantages: its closure is easy, it is adaptable to any type of bracelet, the arrangement and operation of the locking means guarantee them good wear resistance. In addition, it has a simple construction and an optimized size since it is compact and proportioned once in the locked position while providing sufficient deployment in the unlocked position. Finally, the clasp according to the invention and in particular the fixed and movable blades can be made of a wide variety of materials.

Les formes d'exécution ci-dessus ont été décrite à titre d'exemple uniquement, des variations peuvent lui être apportées sans sortir du cadre de la présente invention.The above embodiments have been described by way of example only, variations may be made to it without departing from the scope of the present invention.

Claims (10)

Fermoir déployant pour bracelet comprenant une lame fixe (1), au moins une première lame dépliante (2) articulée à une première extrémité de la lame fixe (1) et des moyens de verrouillage de la première lame dépliante (2) en position repliée sur la lame fixe (1), caractérisé par le fait que les moyens de verrouillage comprennent au moins un rouleau rigide (5) monté pivotant et coulissant sur un axe (7) fixé essentiellement transversalement sur l'une de la lame fixe (1), ou de ladite au moins une première lame dépliante (2) un élément élastique (8) correspondant contraignant ledit au moins un rouleau (5) dans une première position sur l'axe (7) et au moins un épaulement (23) correspondant porté par l'autre de la lame fixe (1) ou de ladite au moins une première lame dépliante (2) et destiné à coopérer avec ledit au moins un rouleau (5) ; par le fait que ledit au moins un rouleau (5) présente une portion conique (51) ; et par le fait que ledit au moins un épaulement (23) et ladite portion conique (51) dudit au moins un rouleau (5) correspondant sont conformés de sorte que lorsque ladite au moins une première lame dépliante (2) est repliée sur la lame fixe (1), ledit au moins un épaulement (23) vient en butée contre ledit au moins un rouleau (5) et notamment contre la portion conique (51) et de sorte qu'une force exercée sur la première lame dépliante (2) essentiellement perpendiculairement à l'axe (7) et dirigée vers ladite lame fixe (1) entraîne le déplacement dudit au moins un rouleau (5) sur l'axe (7) contre l'action de l'élément élastique correspondant (8), ledit au moins un rouleau (5) étant contraint par ledit au moins un épaulement (23) correspondant coopérant avec la portion conique (51) dudit au moins un rouleau (5), dans une seconde position dans laquelle ledit au moins un épaulement (23) correspondant n'est plus en butée contre ladite portion conique (51), ladite au moins une première lame dépliante (2) pouvant être complètement rabattue sur la lame fixe (1) et de sorte que ledit au moins un rouleau (5) rappelé dans sa première position par l'élément élastique (8) correspondant retienne la première lame dépliante (2) et empêche tout mouvement de celle-ci par rapport à la lame fixe.Clasp folding clasp comprising a fixed blade (1), at least a first folding blade (2) articulated at a first end of the fixed blade (1) and locking means of the first folding blade (2) in the folded position on the fixed blade (1), characterized in that the locking means comprise at least one rigid roller (5) pivotally mounted and sliding on an axle (7) fixed essentially transversely to one of the fixed blade (1), or at least a first folding blade (2) a corresponding elastic element (8) constraining said at least one roller (5) in a first position on the axis (7) and at least one corresponding shoulder (23) carried by the other of the fixed blade (1) or of said at least one first folding blade (2) and intended to cooperate with said at least one roller (5); in that said at least one roller (5) has a conical portion (51); and in that said at least one shoulder (23) and said conical portion (51) of said at least one corresponding roller (5) are shaped such that when said at least one first folding blade (2) is folded over the blade fixed (1), said at least one shoulder (23) abuts against said at least one roller (5) and in particular against the conical portion (51) and so that a force exerted on the first folding blade (2) substantially perpendicular to the axis (7) and directed towards said fixed blade (1) causes said at least one roller (5) to move on the axis (7) against the action of the corresponding elastic element (8), said at least one roller (5) being constrained by said at least one corresponding shoulder (23) cooperating with the conical portion (51) of said at least one roller (5), in a second position wherein said at least one shoulder (23) ) corresponding is no longer in abutment against said portion conical (51), said at least one first folding blade (2) being completely folded over the fixed blade (1) and so that said at least one roller (5) returned in its first position by the elastic member (8) ) holds the first folding blade (2) and prevents any movement thereof relative to the fixed blade. Fermoir selon la revendication 1, caractérisé par le fait que l'épaulement (23) et la portion conique (51) du au moins un rouleau (5) sont en outre conformés de sorte que lorsque la première lame dépliante (2) est complètement repliée sur la lame fixe (1) et maintenue dans cette position par ledit au moins un rouleau (5) qui est dans sa première position, une force exercée sur la première lame dépliante (2) essentiellement perpendiculairement à l'axe (7) et s'éloignant de la lame fixe (1) entraîne le déplacement dudit au moins un rouleau (5) sur l'axe (7) contre l'action de l'élément élastique correspondant (8), ledit au moins un rouleau (5) étant contraint par ledit au moins un épaulement (23) correspondant coopérant avec la portion conique (51) dudit au moins un rouleau (5), dans sa seconde position dans laquelle ledit au moins un épaulement (23) n'est plus en butée contre ladite portion conique (51), la première lame dépliante (2) pouvant être complètement dépliée par rapport à la lame fixe (1).Clasp according to claim 1, characterized in that the shoulder (23) and the conical portion (51) of the at least one roller (5) are further shaped so that when the first folding blade (2) is completely folded on the fixed blade (1) and held in this position by said at least one roller (5) which is in its first position, a force exerted on the first folding blade (2) substantially perpendicular to the axis (7) and s away from the fixed blade (1) causes said at least one roller (5) to move on the axis (7) against the action of the corresponding elastic element (8), said at least one roller (5) being constrained by said at least one corresponding shoulder (23) cooperating with the conical portion (51) of said at least one roller (5), in its second position in which said at least one shoulder (23) is no longer abutted against said conical portion (51), the first folding blade (2) being complete t unfolded relative to the fixed blade (1). Fermoir selon l'une des revendications précédentes, caractérisé par le fait que les moyens de verrouillage comprennent deux rouleaux rigides (5, 6) destinés à coopérer chacun avec un épaulement (23, 24) correspondant.Clasp according to one of the preceding claims, characterized in that the locking means comprise two rigid rollers (5, 6) each intended to cooperate with a corresponding shoulder (23, 24). Fermoir selon la revendication 1, caractérisé par le fait que ledit au moins un épaulement (23) et la portion conique (51) dudit au moins un rouleau (5) sont en outre conformés de sorte que lorsque la première lame dépliante (2) est complètement repliée sur la lame fixe (1) et maintenue dans cette position par ledit au moins un rouleau (5) qui est dans sa première position, une force exercée sur la première lame dépliante (2) essentiellement perpendiculairement à l'axe (7) et s'éloignant de la lame fixe (1) n'entraîne pas le déplacement sur l'axe (7) dudit au moins un rouleau (5) contre l'action de l'élément élastique (8) et ne permet pas que la première lame dépliante (2) puisse être complètement dépliée par rapport à la lame fixe (1) ; et par le fait que les moyens de verrouillage comprennent en outre au moins un poussoir correspondant (9) agencé pour coopérer avec ledit au moins rouleau (5) de sorte qu'une pression sur ledit poussoir (9) entraîne le déplacement dudit au moins un rouleau (5) sur l'axe (7) de sa première à sa seconde position dans laquelle il ne bloque plus la première lame mobile (2).Clasp according to claim 1, characterized in that said at least one shoulder (23) and the conical portion (51) of said at least one roller (5) are further shaped so that when the first folding blade (2) is completely folded over the fixed blade (1) and held in this position by said at least one roller (5) which is in its first position, a force exerted on the first folding blade (2) substantially perpendicular to the axis (7) and away from the fixed blade (1) does not cause the displacement on the axis (7) of the at least one roller ( 5) against the action of the elastic element (8) and does not allow the first folding blade (2) can be completely unfolded relative to the fixed blade (1); and in that the locking means further comprise at least one corresponding pusher (9) arranged to cooperate with said at least one roller (5) so that a pressure on said pusher (9) causes the displacement of said at least one roller (5) on the shaft (7) from its first to its second position in which it no longer blocks the first movable blade (2). Fermoir selon la revendication 4, caractérisé par le fait que les moyens de verrouillage comprennent deux rouleaux rigides (5, 6) et deux poussoirs correspondants (9) agencés pour coopérer chacun avec un rouleau respectif.Clasp according to claim 4, characterized in that the locking means comprise two rigid rollers (5, 6) and two corresponding pushers (9) arranged to each cooperate with a respective roller. Fermoir selon la revendication 5, caractérisé par le fait que les deux rouleaux (5, 6) sont agencés sur l'axe (7) de sorte que leur portion conique respective (51, 61) se font face ; et par le fait que l'élément élastique (8) est composé de deux ressorts agissant chacun sur un rouleau (5, 6) respectivement pour les maintenir dans leur première position sur l'axe (7).Clasp according to claim 5, characterized in that the two rollers (5, 6) are arranged on the axis (7) so that their respective conical portions (51, 61) face each other; and in that the elastic element (8) is composed of two springs each acting on a roller (5, 6) respectively to maintain them in their first position on the axis (7). Fermoir selon la revendication 5, caractérisé par le fait que les deux rouleaux (5, 6) sont agencés sur l'axe (7) de sorte que leur portion conique respective (51, 61) ne se font pas face ; et par le fait que l'élément élastique (8) est composé d'un seul ressort agissant simultanément sur chacun des rouleaux (5, 6) pour les maintenir dans leur première position sur l'axe (7).Clasp according to claim 5, characterized in that the two rollers (5, 6) are arranged on the shaft (7) so that their portion respective conical portions (51, 61) do not face each other; and in that the elastic element (8) is composed of a single spring acting simultaneously on each of the rollers (5, 6) to maintain them in their first position on the axis (7). Fermoir selon l'une des revendications précédentes, caractérisé par le fait que le ou les rouleau(x) (5, 6) est/sont porté(s) par la lame fixe (1) tandis que le ou les épaulement(s) (23, 24, 33, 34) correspondant(s) est/sont présent(s) à l'extrémité libre (20) de la au moins une lame mobile (2).Clasp according to one of the preceding claims, characterized in that the roller (s) (5, 6) is / are supported by the fixed blade (1) while the shoulder (s) (s) ( 23, 24, 33, 34) is / are present at the free end (20) of the at least one movable blade (2). Fermoir selon l'une des revendications précédentes, caractérisé par le fait qu'il comprend une seconde lame dépliante (3) articulée à une seconde extrémité de la lame fixe (1) indépendamment de la première lame dépliante (2).Clasp according to one of the preceding claims, characterized in that it comprises a second folding blade (3) articulated to a second end of the fixed blade (1) independently of the first folding blade (2). Fermoir selon l'une des revendications précédentes, caractérisé par le fait que la ou les lame(s) dépliante(s) (2, 3) et/ou les moyens de verrouillage comprennent en outre des moyens de réglages (25, 35, 8) permettant de régler les paramètres de verrouillage du fermoir (force, nécessaire, jeu...).Clasp according to one of the preceding claims, characterized in that the folding blade (s) (2, 3) and / or the locking means further comprise adjusting means (25, 35, 8 ) to adjust the locking parameters of the clasp (force, necessary, game ...).
EP14160815.8A 2013-06-11 2014-03-20 Clasp with extensible loop Active EP2813157B1 (en)

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CH01107/13A CH708214B1 (en) 2013-06-11 2013-06-11 Clasp with folding clasp.

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EP2813157A1 true EP2813157A1 (en) 2014-12-17
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3093897A1 (en) 2019-03-20 2020-09-25 Michel Gigoux Folding clasp with rigid parallel spars
FR3094873A1 (en) 2019-04-09 2020-10-16 Michel Gigoux mini folding clasp with rigid spars

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CH668353A5 (en) * 1986-11-17 1988-12-30 Erbas S A Extensible fastener for bracelet or watch - has two folding segments with bracelets end joined to plate sliding in cover and hooks engaging in hole in segment
CH676415A5 (en) 1987-08-14 1991-01-31 Boucledor Sa Fastener for bracelet
DE19620838A1 (en) * 1995-05-31 1996-12-05 Hattori Seiko Co Ltd Band lock
WO1998000042A1 (en) * 1996-07-01 1998-01-08 Gay Freres Vente Et Exportation S.A. Clasp with button

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CH668353A5 (en) * 1986-11-17 1988-12-30 Erbas S A Extensible fastener for bracelet or watch - has two folding segments with bracelets end joined to plate sliding in cover and hooks engaging in hole in segment
CH676415A5 (en) 1987-08-14 1991-01-31 Boucledor Sa Fastener for bracelet
DE19620838A1 (en) * 1995-05-31 1996-12-05 Hattori Seiko Co Ltd Band lock
WO1998000042A1 (en) * 1996-07-01 1998-01-08 Gay Freres Vente Et Exportation S.A. Clasp with button

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3093897A1 (en) 2019-03-20 2020-09-25 Michel Gigoux Folding clasp with rigid parallel spars
FR3094873A1 (en) 2019-04-09 2020-10-16 Michel Gigoux mini folding clasp with rigid spars

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CH708214A2 (en) 2014-12-15
CH708214B1 (en) 2017-06-15
EP2813157B1 (en) 2016-05-18

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