EP4157026B1 - Extendable clasp with folding buckle for a bracelet in particular for a watch - Google Patents

Extendable clasp with folding buckle for a bracelet in particular for a watch Download PDF

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Publication number
EP4157026B1
EP4157026B1 EP21729006.3A EP21729006A EP4157026B1 EP 4157026 B1 EP4157026 B1 EP 4157026B1 EP 21729006 A EP21729006 A EP 21729006A EP 4157026 B1 EP4157026 B1 EP 4157026B1
Authority
EP
European Patent Office
Prior art keywords
clasp
pivoting
blade
rod
extendable
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.)
Active
Application number
EP21729006.3A
Other languages
German (de)
French (fr)
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EP4157026A1 (en
Inventor
Paul PACHOLAK
Romain GIGON
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chanel SARL
Original Assignee
G&F Chatelain SA
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Publication date
Application filed by G&F Chatelain SA filed Critical G&F Chatelain SA
Publication of EP4157026A1 publication Critical patent/EP4157026A1/en
Application granted granted Critical
Publication of EP4157026B1 publication Critical patent/EP4157026B1/en
Active legal-status Critical Current
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Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
    • A44C5/18—Fasteners for straps, chains or the like
    • A44C5/22—Fasteners for straps, chains or the like for closed straps
    • A44C5/24—Fasteners for straps, chains or the like for closed straps with folding devices
    • A44C5/243—Automatic folding spring closure
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
    • A44C5/18—Fasteners for straps, chains or the like
    • A44C5/22—Fasteners for straps, chains or the like for closed straps
    • A44C5/24—Fasteners for straps, chains or the like for closed straps with folding devices
    • A44C5/246—Fasteners for straps, chains or the like for closed straps with folding devices having size adjusting means

Definitions

  • the present invention relates to the field of bracelets, in particular for watches. It relates more particularly to a bracelet clasp of the folding buckle type allowing the bracelet to be made more comfortable
  • CH705149 discloses a folding clasp comprising a central support, a first and a second pivoting blade articulated at the respective ends of the central support and arranged to fold back on the latter.
  • the clasp further comprises a fastening body arranged on at least one of the first and second pivoting blades.
  • the clip body is configured to move lengthwise of the corresponding pivoting blade to be locked in different positions along said blade.
  • EP1464245 discloses a clasp with a folding clasp comprising a curved lower arm and an upper arm, locking means as well as connecting means connecting the arms to one another in an articulated manner at one of their ends.
  • One end of the upper arm is mounted on slides of the lower arm in order to move relative to the latter in order to occupy at least two positions in which a head secured to the upper arm can be engaged in one or the other of two cutouts arranged on the lower arm.
  • EP3412168 discloses a bracelet clasp comprising first and second blades.
  • the first blade is articulated to the second blade by a first end, between a closed position, in which the second blade is folded over the first blade, and an open position in which the second blade is released from the first blade.
  • the clasp comprises adjustment means arranged to adjust the position of the second blade relative to the first blade in the open position.
  • the adjustment means include a groove machined in the second blade, an axis secured to the first blade and passing through the groove.
  • a pusher is mounted on the axis in order to be able to move the second blade relative to the first blade under the action of the pusher.
  • the document FR3041217A1 discloses an extendable clasp according to the preamble of claim 1.
  • An object of the present invention is therefore to provide an extensible clasp which is simple to manufacture and inexpensive to produce.
  • Another object of the present invention is to provide an extensible clasp which is reliable.
  • the force exerted by the end portion of the flexible blade is transmitted to the pivoting blade via a roller rotatably mounted on the pivoting blade.
  • the other end of the support includes a member for attaching to the other of the bracelet strands.
  • the extensible clasp comprises a first and a second pivoting blade each comprising a proximal portion and a distal portion.
  • the proximal portions of the first and second pivoting blades are articulated respectively to a first and a second end of the support by means of a first and a second rod respectively.
  • the distal portions of the first and second pivoting blades are configured to be connected to either strand of the bracelet.
  • the indexing mechanism is arranged to be able to move the first and second rods relative to the support or relative to the first, respectively the second pivoting blade in order to position each of the first and second rods in an indexed position of at least two indexed positions.
  • the flexible blade is, for its part, arranged to, on the one hand, exert a force on the first and second pivoting blades in order to press said pivoting blades against the support in order to maintain the clasp in a closed configuration, and on the other hand , to lock the first and the second rod in their respective indexed position.
  • the first and second pivoting blades each comprise a roller arranged against respectively the first and the second end portion of the flexible blade when the clasp is in a closed configuration.
  • the distal portions of the first and second pivoting blades each include a member for attaching to one of the strands of the bracelet.
  • the proximal portions of the first and second pivoting blades each comprise the roller which is adapted to flex the corresponding end portion of the flexible blade and to roll along a portion of said flexible blade when a force is exerted on the member of attaches in a suitable direction to bring the clasp into a deployed configuration.
  • the support comprises four grooves arranged at the respective ends of each of the two longitudinal edges of the support.
  • the first and second rods pass through the first and a second pivoting blade, respectively.
  • the two ends of each rod are housed in two opposite grooves.
  • the shape of two opposite grooves defines said at least two indexed positions.
  • each of the four grooves is curved and passes right through one of the two longitudinal edges of the support.
  • each of the first and second pivoting blades comprises a body and two arms extending in the extension of the lateral edges of the body in order to form a window to allow the tilting of each pivoting blade so that the rod corresponding can come into contact with the flexible blade.
  • a terminal portion of each of the two arms comprises a first through hole arranged facing one another and in which two segments of the corresponding rod are arranged.
  • the end portion of each of the two arms further comprises a second hole which are arranged facing each other and in which are housed the ends of an axis around which the roller is pivotally mounted.
  • the support has four holes arranged at the respective ends of each of the two longitudinal edges.
  • the two ends of each rod are housed in two opposite holes.
  • Each of the first and second pivoting blades comprises two arms each comprising a first groove which are arranged facing each other and crossed by the corresponding rod.
  • the two segments of said rod are located in the two first opposite grooves and the shape of said first grooves has been determined so that the two segments of said rod can move along said grooves when the corresponding pivoting blade is brought into a predetermined angular position relative to the support in order to bring said rod from a first indexed position to a second indexed position.
  • the first and second pivoting blades each comprise a roller pivotally mounted on an axis.
  • Each roller is arranged against respectively the first and the second end portion of the flexible blade when the clasp is in a closed configuration.
  • the two arms of the first and second pivoting blades each have a second groove which are arranged facing each other and crossed by the respective ends of the roller axis.
  • the first and second pivoting blades each comprise a connecting part comprising a through hole crossed by the respective rod of said first and second pivoting blades.
  • the connecting part further comprises two horns each comprising a through hole. A first and a second segment of the roller axis are arranged in the respective hole of each horn.
  • the respective rod and the axis of the roller of each of the first and second pivoting blades are arranged to move together along respectively the first and second grooves during the pivoting of the first and second pivoting blades so as to that the force exerted by the first and second end portions of the flexible blade on the roller respectively of the first and second pivoting blades remains constant when the clasp is in a closed configuration independently of the indexed position of the first and second pivoting blades.
  • Another aspect of the invention relates to a bracelet comprising the extendable clasp as described above.
  • Another aspect of the invention relates to a watch comprising the aforementioned bracelet.
  • the extensible clasp 10 is of the double folding clasp type (commonly called butterfly folding clasp) and comprises for this purpose, according to the figure 1 , a central support 12 as well as a first and a second pivoting blade 20a, 20b ( figure 4 ) articulated at the respective ends of the central support 12 by means of a first and a second rod 21a, 21b respectively.
  • the central support 12 has two longitudinal edges 14a, 14b ( figure 2 ) slightly arched to fit part of the contour of the wrist.
  • the two longitudinal edges 14a, 14b are connected together by a part 18 acting as a blade support on which a flexible blade 17 is mounted.
  • a central part of flexible blade 17 can, for example, be fixed to the blade support 18 by means of a fixing element 19, in particular a screw.
  • the central part of the flexible blade 17 has a through hole 17a while the blade support 18 has a tapping 18a in order to fix the central part of the flexible blade 17 against the underside of the blade support 18.
  • the flexible blade 17 is fixed so as to extend along the longitudinal edges 14a, 14b of the central support.
  • the central support 12 has four grooves 16a, 16b, 16c, 16d arranged at the respective ends of each of the two longitudinal edges 14a, 14b.
  • Each groove passes right through one of the longitudinal edges and has a curved shape comprising a semi-cylindrical portion at each end defining two indexed positions.
  • the grooves can, however, take different shapes depending on execution variants with the possibility of having a number of indexed positions greater than two in order to allow more precise adjustment when making the bracelet comfortable.
  • the curved grooves 16a, 16b are arranged facing each other at a first end of the central support 12 so as to receive the ends of the rod 21a of the first pivoting blade 20a while the curved grooves 16c, 16d are arranged facing each other at a second end of the central support 12 so as to receive the ends of the rod 21b of the second pivoting blade 20b.
  • the head of each rod located at one of its ends and a cap 22 mounted at the other of its ends make it possible to prevent axial movement of the rods relative to the central support 12.
  • the rods can be held, under the action of the flexible blade 17, against one or the other of the cylindrical portions of each curved groove representing a first and second indexed position.
  • Each pivoting blade 20a, 20b comprises a body 31, and two arms 34 extending in the extension of the lateral edges of the body 31 in order to form a window 32, as can be seen in particular on the figure 4 , to allow the tilting of each pivoting blade 20a, 20b so that the corresponding rod 21a, 21b can come into contact with the flexible blade 17 according to the description which will be made later.
  • a terminal portion of each of the two arms 34 has a through hole 35 arranged facing each other and in which two segments of the corresponding rod 21a, 21b are arranged.
  • Each pivoting blade 20a, 20b also comprises a roller 24 mounted between the two arms 34. More particularly, the roller 24 is arranged to rotate around an axis 25. This axis is formed of a tube 27 with notch and a pin 26 with groove which is adjusted inside the tube 27 so as to center together the roller 24, the tube 26 and the pin 25. The ends of this are housed in two other holes 36 located on the terminal portion of each of the two arms 34 near the through hole 35.
  • Each pivoting blade 20a, 20b comprises a distal part provided with an extension 40 comprising a through hole 42 in which is arranged a bar 44 whose ends are fixed to an attachment member 45 intended to be connected to a first and a second strand of a bracelet.
  • the extendable clasp 10 is in a closed configuration in which the respective rods 21a, 21b of the first and second pivoting blades 20a, 20b are arranged in a first indexed position in order to tighten the bracelet.
  • the attachment members 45 to the strands of the bracelet are located close to each other.
  • the extensible clasp 10 is in a closed configuration in which the respective rods 21a, 21b of the first and second pivoting blades 20a, 20b are arranged in a second indexed position allowing the bracelet to be placed at ease.
  • the attachment members 45 to the strands of the bracelet are distant from each other.
  • THE figures 4 to 8 illustrate the different sequences of movement of the first and second pivoting blades 20a, 20b relative to the central support 12 in order to move the clasp 10 from a first configuration according to the figure 2 to a second configuration according to the Figure 3 .
  • the indexing mechanism does not make the bracelet comfortable to wear. It must first be removed from the wrist in order to be able to put the bracelet at ease.
  • the first and second pivoting blades 20a, 20b are first deployed according to the figures 4 And 5 .
  • An additional pivot of approximately 180° is given to the pivoting blades to achieve the configuration of the clasp according to the Figure 6 .
  • This additional pivoting is made possible thanks to a window 32 ( Figure 4 ) located on each pivoting blade 20a, 20b through which a first respectively a second terminal portion of the flexible blade 17 is arranged.
  • the respective rods 21a, 21b of the first and second pivoting blades 20a, 20b are in contact with the end portions of the flexible blade 17.
  • the force which must be exerted on one and the other of the pivoting blades 20a, 20b in a direction perpendicular to the bearing surface of the flexible blade 17 on which rests the rod 21a, 21b of each pivoting blade is minimal in order to pass the corresponding rod of the first cylindrical portion of the curved groove 16d according to there Figure 7 to the second cylindrical portion of the curved groove 16d according to the figure 8 in order to move from one to the other of the two indexed positions.
  • first and second pivoting blades from one to the other of the two indexed positions can also be done by only pivoting less than 90° from the closed configuration of the clasp. It is in fact possible starting from the configuration of the clasp according to the Figure 5 , in which the rollers 24 of the first and second pivoting blades 20a, 20b rest on a corresponding support surface of the flexible blade, to move from the first to the second indexed position by exerting a force on one and/or the the other of the two pivoting blades towards the flexible blade 17.
  • the force which must be exerted on the first and second pivoting blades 20a, 20b must nevertheless be much greater than starting from the configuration of the clasp according to the Figure 6 and putting the bracelet at ease is therefore more difficult to do.
  • the clasp 100 comprises a central support 112 comprising two longitudinal edges 114a, 114b ( Figure 11 ) and a flexible blade 117 secured to the central support 112 and arranged between and along the two longitudinal edges 114a, 114b.
  • Four holes 116a, 116b, 116c, 116d are arranged at the respective ends of each of the two longitudinal edges 114a, 114b of the central support.
  • the clasp 100 further comprises a first and a second pivoting blade 120a, 120b ( Figure 13 ) each comprising a proximal portion and a distal portion.
  • the proximal portion of the first and second pivoting blades 120a, 120b are articulated respectively to a first and a second end of the central support 112 by means of a first and a second rod 121a, 121b respectively whose ends are mounted in two opposite holes of the four holes 116a, 116b, 116c, 116d of the longitudinal edges 114a, 114b of the central support 112.
  • first and second pivoting blades 120a, 120b The distal portion of said first and second pivoting blades 120a, 120b is provided with an extension 140 comprising a through hole 142 in which is arranged a bar 144 whose ends are fixed to an attachment member 145 intended to be connected to a first and a second strand of a bracelet.
  • each of the first and second pivoting blades comprises two arms 134 each comprising a terminal portion.
  • the end portions each include a first groove 138 arranged facing each other and crossed by the corresponding rod 121a, 121b.
  • the head of each rod located at one of its ends and a cap 122 mounted at the other of its ends make it possible to prevent axial movement of the rods relative to the central support 112.
  • the two segments of the rod located in the two first opposite grooves 138 and the shape of the first grooves have been determined so that the two portions of the rod 121a, 121b can move along said grooves 138 when the corresponding pivoting blade 120a, 120b is brought into a predetermined angular position relative to the central support 112 in order to bring said rod 121a, 121b from a first indexed position to a second indexed position.
  • each rod 121a (only the rod 121a of one of the pivoting blades is shown in these figures) has a flat 123 while the two first opposite grooves 138 have two semi-circular ends separated by a rectilinear groove 138a .
  • this predetermined angular position preferably corresponds to a position of the first and second pivoting blade 120a, 120b after they have rotated around their respective axis of rotation by an angle greater than 250°, for example approximately 270° relative to their position when the clasp 100 is in a closed configuration.
  • the first and second pivoting blades 120a, 120b each include a window 132 ( Figure 14 ) for the passage of the end portions of the flexible blade 170 and thus allow the tilting of each pivoting blade 20a, 20b so that the clasp can be found in the configuration illustrated in Figure 14 .
  • the flat 123 of the corresponding segment of the rod which is housed in one of the semi-circular ends of the groove 138, is aligned with the groove rectilinear 138a so that the segment can move along this groove in order to be housed in the other of the semi-circular ends of the groove 138.
  • the first and second end portions of the flexible blade 170 exert a force respectively against the first and second rod 121a, 121b in order to maintain the corresponding segments of each rod in one or the other of the semi-circular ends of the groove 138 in order to lock the clasp in one or the other of the two indexed positions.
  • the first and second pivoting blades 120a, 120b each comprise a roller 124 pivotally mounted on an axis 125.
  • This axis is formed of a tube 127 with notch and a pin 126 with groove which is adjusted to the inside the tube 127 so as to center together the roller 124, the tube 126 and the pin 125.
  • the rollers are arranged against respectively a first and a second end portion of the flexible blade 117 when the clasp is in a closed configuration.
  • THE two arms 134 of the first and second pivoting blades 120a, 120b each include a second groove 137 arranged facing one another and crossed by the respective ends of the axis 125 of the roller 124.
  • the first and second pivoting blades 120a, 120b each comprise a connecting piece 128 comprising a through hole 130 crossed by the respective rod 121a, 121b of said first and second pivoting blades 120a, 120b.
  • the connecting part 128 further comprises two horns 129 each comprising a hole 129a.
  • the ends of the axis 125 of the roller 124 are arranged in the respective hole 129a of each horn 129.
  • a first and a second segment of the axis 125 of the roller 124 are arranged in the respective hole 129a of each horn 129.
  • the respective rod 121a, 121b and the axis 125 of the roller 124 of each of the first and second pivoting blades 120a, 120b are arranged to move together along respectively the first and second grooves 138, 137 during the pivoting of the first and second pivoting blades 120a, 120b so that the force exerted by the roller 124 on the central support 112 remains constant when the clasp is in a closed configuration independently of the indexed position of the first and second pivoting blades 20a, 20b.
  • an extensible clasp 200 of the simple folding clasp type comprises a support 212, a flexible blade 217 mounted on the support and extending along its lateral edges 214a, 214b as well as a pivoting blade 220 articulated at a first end of the support 212 by means of the rod 221 and cooperating with a terminal portion of the flexible blade 217 by means of a roller 224 so as to press the pivoting blade against the support in order to maintain the clasp in a closed configuration.
  • a first attachment member 246 to one of the strands of a bracelet is arranged at the other end of the support 212 while a second attachment member 245 to the other of the strands of the bracelet is connected to one end of the pivoting blade.
  • the clasp 200 further comprises an indexing mechanism for moving the pivoting blade 220 relative to the support in one or the other of two indexed positions. This mechanism is identical to that described for one of the two pivoting blades of the clasp of the embodiment illustrated by the figures 1 to 9 .
  • the extensible clasp 300 of the simple folding clasp type includes an indexing mechanism for making the bracelet more comfortable, arranged to be able to move the rod (not visible) relative to the pivoting blade 320 in order to position the rod in a indexed position of at least two indexed positions.
  • the indexing mechanism has the same characteristics as those described for the positioning of the rod of one of the two pivoting blades of the clasp according to the embodiment illustrated by the figures 10 to 16 .
  • the flexible blade is not necessarily continuous and may comprise two flexible portions spaced apart from each other and arranged to exert a force on the respective rods of the first and second rods of the pivoting blades.

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Description

Domaine techniqueTechnical area

La présente invention se rapporte au domaine des bracelets, notamment pour montres. Elle concerne plus particulièrement un fermoir de bracelet de type à boucle déployante permettant une mise à l'aise du braceletThe present invention relates to the field of bracelets, in particular for watches. It relates more particularly to a bracelet clasp of the folding buckle type allowing the bracelet to be made more comfortable

Etat de la techniqueState of the art

Les fermoirs extensibles pour une mise à l'aise d'un bracelet, en particulier d'une montre, sont bien connus et une pléiade de solutions existe déjà.Extendable clasps for making a bracelet, particularly a watch, more comfortable are well known and a host of solutions already exist.

A titre d'exemple, CH705149 divulgue un fermoir à boucle déployante comportant un support central, une première et une seconde lame pivotante articulées aux extrémités respectives du support central et agencées pour se rabattre sur ce dernier. Le fermoir comporte en outre un corps d'attache agencé sur au moins une des première et seconde lames pivotantes. Le corps d'attache est configuré pour se déplacer dans le sens de la longueur de la lame pivotante correspondante pour être verrouillé dans différentes positions le long de ladite lame.For exemple, CH705149 discloses a folding clasp comprising a central support, a first and a second pivoting blade articulated at the respective ends of the central support and arranged to fold back on the latter. The clasp further comprises a fastening body arranged on at least one of the first and second pivoting blades. The clip body is configured to move lengthwise of the corresponding pivoting blade to be locked in different positions along said blade.

EP1464245 divulgue un fermoir à boucle déployante comportant un bras inférieur et un bras supérieur cintrés, des moyens de verrouillage ainsi que des moyens de liaison reliant les bras l'un à l'autre de manière articulée à l'une de leurs extrémités. Une extrémité du bras supérieur est montée sur des glissières du bras inférieur afin de se déplacer par rapport à ce dernier afin d'occuper au moins deux positions dans lesquelles une tête solidaire du bras supérieur peut être engagée dans l'une ou l'autre de deux découpes agencées sur le bras inférieur. EP1464245 discloses a clasp with a folding clasp comprising a curved lower arm and an upper arm, locking means as well as connecting means connecting the arms to one another in an articulated manner at one of their ends. One end of the upper arm is mounted on slides of the lower arm in order to move relative to the latter in order to occupy at least two positions in which a head secured to the upper arm can be engaged in one or the other of two cutouts arranged on the lower arm.

EP3412168 divulgue un fermoir pour bracelet comprenant des première et deuxième lames. La première lame est articulée à la deuxième lame par une première extrémité, entre une position fermée, dans laquelle la deuxième lame est repliée sur la première lame, et une position ouverte dans laquelle la deuxième lame est dégagée de la première lame. Le fermoir comprend des moyens de réglage agencé pour régler la position de la deuxième lame par rapport à la première lame en position ouverte. Les moyens de réglage comprennent une gorge usinée dans la deuxième lame, un axe solidaire de la première lame et passant au travers de la gorge. Un poussoir est monté sur l'axe afin de pouvoir déplacer la deuxième lame par rapport à la première lame sous l'action du poussoir. EP3412168 discloses a bracelet clasp comprising first and second blades. The first blade is articulated to the second blade by a first end, between a closed position, in which the second blade is folded over the first blade, and an open position in which the second blade is released from the first blade. The clasp comprises adjustment means arranged to adjust the position of the second blade relative to the first blade in the open position. The adjustment means include a groove machined in the second blade, an axis secured to the first blade and passing through the groove. A pusher is mounted on the axis in order to be able to move the second blade relative to the first blade under the action of the pusher.

Le document FR3041217A1 divulgue un fermoir extensible selon le préambule de la revendication 1.The document FR3041217A1 discloses an extendable clasp according to the preamble of claim 1.

Ces fermoirs ont le désavantage de comporter une multitude de pièces, ce qui rend sa fabrication complexe avec un impact négatif sur son coût de revient et sur sa fiabilité.These clasps have the disadvantage of comprising a multitude of parts, which makes its manufacturing complex with a negative impact on its cost price and its reliability.

Bref résumé de l'inventionBrief summary of the invention

Un but de la présente invention est par conséquent de proposer un fermoir extensible qui est simple à fabriquer et peu coûteux à produire.An object of the present invention is therefore to provide an extensible clasp which is simple to manufacture and inexpensive to produce.

Un autre but de la présente invention est de proposer un fermoir extensible qui est fiable.Another object of the present invention is to provide an extensible clasp which is reliable.

Ces buts sont atteints par un fermoir extensible à boucle déployante pour bracelet, selon la revendication 1.These goals are achieved by an extensible clasp with a folding clasp for a bracelet, according to claim 1.

Selon une forme de réalisation, la force exercée par la portion terminale de la lame flexible est transmise à la lame pivotante par l'intermédiaire d'un rouleau monté de manière rotative sur la lame pivotante. L'autre extrémité du support comporte un organe d'attache à l'autre des brins du bracelet.According to one embodiment, the force exerted by the end portion of the flexible blade is transmitted to the pivoting blade via a roller rotatably mounted on the pivoting blade. The other end of the support includes a member for attaching to the other of the bracelet strands.

Selon une forme de réalisation, le fermoir extensible comprend une première et une seconde lame pivotante comportant chacune une portion proximale et une portion distale. Les portions proximales des première et secondes lames pivotantes sont articulées respectivement à une première et à une seconde extrémité du support au moyen respectivement d'une première et d'une seconde tige. Les portions distales des première et seconde lames pivotantes sont configurées pour être connectées à l'un et l'autre des brins du bracelet.According to one embodiment, the extensible clasp comprises a first and a second pivoting blade each comprising a proximal portion and a distal portion. The proximal portions of the first and second pivoting blades are articulated respectively to a first and a second end of the support by means of a first and a second rod respectively. The distal portions of the first and second pivoting blades are configured to be connected to either strand of the bracelet.

Le mécanisme d'indexation est agencé pour pouvoir déplacer les première et seconde tiges par rapport au support ou par rapport à la première, respectivement la seconde lame pivotante afin de positionner chacune des première et seconde tiges dans une position indexée d'au moins deux positions indexées. La lame flexible est, quant à elle, agencée pour, d'une part, exercer une force sur les première et seconde lames pivotantes afin de plaquer lesdites lames pivotantes contre le support afin maintenir le fermoir dans une configuration fermée, et d'autre part, pour verrouiller la première et la seconde tige dans leur position indexée respective.The indexing mechanism is arranged to be able to move the first and second rods relative to the support or relative to the first, respectively the second pivoting blade in order to position each of the first and second rods in an indexed position of at least two indexed positions. The flexible blade is, for its part, arranged to, on the one hand, exert a force on the first and second pivoting blades in order to press said pivoting blades against the support in order to maintain the clasp in a closed configuration, and on the other hand , to lock the first and the second rod in their respective indexed position.

Selon une forme de réalisation, les première et seconde lames pivotantes comportent chacune un rouleau agencé contre respectivement la première et la seconde portion terminale de la lame flexible lorsque le fermoir est dans une configuration fermée.According to one embodiment, the first and second pivoting blades each comprise a roller arranged against respectively the first and the second end portion of the flexible blade when the clasp is in a closed configuration.

Selon une forme de réalisation, les portions distales des première et seconde lames pivotantes comportent chacune un organe d'attache à l'un des brins du bracelet. Les portions proximales des première et seconde lames pivotantes comportent chacune le rouleau qui est adapté pour fléchir la portion terminale correspondante de la lame flexible et pour rouler le long d'une portion de ladite lame flexible lorsqu'une force est exercée sur l'organe d'attache selon une direction adéquate pour amener le fermoir dans une configuration déployée.According to one embodiment, the distal portions of the first and second pivoting blades each include a member for attaching to one of the strands of the bracelet. The proximal portions of the first and second pivoting blades each comprise the roller which is adapted to flex the corresponding end portion of the flexible blade and to roll along a portion of said flexible blade when a force is exerted on the member of attaches in a suitable direction to bring the clasp into a deployed configuration.

Selon une forme de réalisation, le support comporte quatre gorges agencées aux extrémités respectives de chacun des deux bords longitudinaux du support. Les première et seconde tiges traversent respectivement les première et une seconde lame pivotantes. Les deux extrémités de chaque tige sont logées dans deux gorges opposées. La forme de deux gorges opposées définisse lesdites au moins deux positions indexées.According to one embodiment, the support comprises four grooves arranged at the respective ends of each of the two longitudinal edges of the support. The first and second rods pass through the first and a second pivoting blade, respectively. The two ends of each rod are housed in two opposite grooves. The shape of two opposite grooves defines said at least two indexed positions.

Selon une forme de réalisation, chacune des quatre gorges est incurvée et traverse de part en part l'un des deux bords longitudinaux du support.According to one embodiment, each of the four grooves is curved and passes right through one of the two longitudinal edges of the support.

Selon une forme de réalisation, chacune des première et seconde lames pivotantes comporte un corps et deux bras s'étendant dans le prolongement des bords latéraux du corps afin de former une fenêtre pour permettre le basculement de chaque lame pivotante de sorte à ce que la tige correspondante puisse venir au contact de la lame flexible.According to one embodiment, each of the first and second pivoting blades comprises a body and two arms extending in the extension of the lateral edges of the body in order to form a window to allow the tilting of each pivoting blade so that the rod corresponding can come into contact with the flexible blade.

Selon une forme de réalisation, une portion terminale de chacun des deux bras comporte un premier trou traversant agencés en regard l'un de l'autre et dans lesquels deux segments de la tige correspondante sont agencés. La portion terminale de chacun des deux bras comporte en outre un second trou qui sont agencés en regard l'un de l'autre et dans lesquels sont logées les extrémités d'un axe autour duquel le rouleau est monté de manière pivotante.According to one embodiment, a terminal portion of each of the two arms comprises a first through hole arranged facing one another and in which two segments of the corresponding rod are arranged. The end portion of each of the two arms further comprises a second hole which are arranged facing each other and in which are housed the ends of an axis around which the roller is pivotally mounted.

Selon une forme de réalisation, le support comporte quatre trous agencés aux extrémités respectives de chacun des deux bords longitudinaux. Les deux extrémités de chaque tige sont logées dans deux trous opposés. Chacune des première et seconde lames pivotantes comporte deux bras comprenant chacun une première gorge qui sont agencées en regard l'une de l'autre et traversées par la tige correspondante. Les deux segments de ladite tige se trouve dans les deux premières gorges opposées et la forme desdites premières gorges a été déterminée de sorte à ce que les deux segments de ladite tige puissent se déplacer le long desdites gorges lorsque la lame pivotante correspondante est amenée dans une position angulaire prédéterminée par rapport au support afin d'amener ladite tige d'une première position indexée à une seconde position indexée.According to one embodiment, the support has four holes arranged at the respective ends of each of the two longitudinal edges. The two ends of each rod are housed in two opposite holes. Each of the first and second pivoting blades comprises two arms each comprising a first groove which are arranged facing each other and crossed by the corresponding rod. The two segments of said rod are located in the two first opposite grooves and the shape of said first grooves has been determined so that the two segments of said rod can move along said grooves when the corresponding pivoting blade is brought into a predetermined angular position relative to the support in order to bring said rod from a first indexed position to a second indexed position.

Selon une forme de réalisation, les première et seconde lames pivotantes comportent chacune un rouleau monté pivotant sur un axe. Chaque rouleau est agencé contre respectivement la première et la seconde portion terminale de la lame flexible lorsque le fermoir est dans une configuration fermée. Les deux bras des première et seconde lames pivotantes comportent chacun une seconde gorge qui sont agencées en regard l'une de l'autre et traversées par les extrémités respectives de l'axe du rouleau.According to one embodiment, the first and second pivoting blades each comprise a roller pivotally mounted on an axis. Each roller is arranged against respectively the first and the second end portion of the flexible blade when the clasp is in a closed configuration. The two arms of the first and second pivoting blades each have a second groove which are arranged facing each other and crossed by the respective ends of the roller axis.

Selon une forme de réalisation, les première et seconde lames pivotantes comportent chacune une pièce de liaison comprenant un trou traversant traversé par la tige respective desdites première et seconde lames pivotantes. La pièce de liaison comporte en outre deux cornes comprenant chacune un trou traversant. Un premier et un second segment de l'axe du rouleau sont agencés dans le trou respectif de chaque corne.According to one embodiment, the first and second pivoting blades each comprise a connecting part comprising a through hole crossed by the respective rod of said first and second pivoting blades. The connecting part further comprises two horns each comprising a through hole. A first and a second segment of the roller axis are arranged in the respective hole of each horn.

Selon une forme de réalisation, la tige respective et l'axe du rouleau de chacune des première et seconde lames pivotantes sont agencés pour se déplacer ensemble le long respectivement des première et seconde gorges au cours du pivotement des première et seconde lames pivotantes de sorte à ce que la force exercée par les première et seconde portions terminales de la lame flexible sur le rouleau respectivement des première et seconde lames pivotantes reste constante lorsque le fermoir est dans une configuration fermée indépendamment de la position indexée des première et seconde lames pivotantes.According to one embodiment, the respective rod and the axis of the roller of each of the first and second pivoting blades are arranged to move together along respectively the first and second grooves during the pivoting of the first and second pivoting blades so as to that the force exerted by the first and second end portions of the flexible blade on the roller respectively of the first and second pivoting blades remains constant when the clasp is in a closed configuration independently of the indexed position of the first and second pivoting blades.

Un autre aspect de l'invention porte sur un bracelet comportant le fermoir extensible tel que décrit ci-dessus.Another aspect of the invention relates to a bracelet comprising the extendable clasp as described above.

Un autre aspect de l'invention porte sur une montre comportant le bracelet susvisé.Another aspect of the invention relates to a watch comprising the aforementioned bracelet.

Brève description des figuresBrief description of the figures

Des exemples de mise en oeuvre de l'invention sont décrits dans la description en référence aux figures annexées dans lesquelles :

  • la figure 1 illustre une vue éclatée d'un fermoir extensible du type à boucle déployante double pour bracelet avec un mécanisme de mise à l'aise du bracelet selon une première forme de réalisation ;
  • la figure 2 illustre une vue en perspective du fermoir de la figure 1 dans une configuration fermée et dans une première position indexée ;
  • la figure 3 illustre une vue similaire à la figure 2 lorsque le fermoir se trouve dans une seconde position indexée ;
  • la figure 4 illustre une vue en perspective du fermoir de la figure 2 lorsque les deux lames pivotantes sont déployées ;
  • la figure 5 illustre une vue en coupe selon une section transversale de la figure 4;
  • la figure 6 illustre une vue similaire à la figure 5 lorsque les deux lames pivotantes ont été pivotées d'environ 270° autour de leur axe de pivotement respectif par rapport à leur position lorsque le fermoir est dans une configuration fermée illustrée à la figure 2 ;
  • la figure 7 illustre une vue en perspective de l'une des lames pivotantes de la figure 6 lorsqu'elle se trouve dans une première position indexée par rapport au support central ;
  • la figure 8 est une vue similaire à la figure 7, lorsque la lame pivotante se trouve dans une seconde position indexée par rapport au support central ;
  • la figure 9 illustre une vue partielle de la figure 8 ;
  • la figure 10 illustre une vue éclatée d'un fermoir extensible du type à boucle déployante double pour bracelet avec un mécanisme de mise à l'aise du bracelet selon une seconde forme de réalisation ;
  • la figure 11 illustre une vue en perspective du fermoir de la figure 10 dans une configuration fermée et dans une première position indexée ;
  • la figure 12 illustre une vue similaire à la figure 11 lorsque le fermoir se trouve dans une seconde position indexée ;
  • la figure 13 illustre une vue en perspective du fermoir de la figure 12 lorsque les deux lames pivotantes sont déployées ;
  • la figure 14 illustre une vue en perspective du fermoir lorsque les deux lames pivotantes ont été pivotées d'environ 270° autour de leur axe de pivotement respectif par rapport à leur position lorsque le fermoir est dans une configuration fermée illustrée à la figure 11 ;
  • la figure 15 illustre une vue en perspective agrandie de la figure 14 au niveau de l'articulation de la première lame pivotante lorsque la lame pivotante se trouve dans une première position indexée,
  • la figure 16 illustre une vue similaire à la figure 15 lorsque la lame pivotante se trouve dans une seconde position indexée,
  • la figure 17 illustre une vue en perspective d'un fermoir extensible du type à boucle déployante simple pour bracelet dans une configuration fermée selon une troisième forme de réalisation,
  • la figure 18 illustre le fermoir de la figure 17 lorsque la lame pivotante est déployée, et
  • la figure 19 illustre une vue en perspective d'un fermoir extensible du type à boucle déployante simple pour bracelet dans une configuration fermée selon une quatrième forme de réalisation.
Examples of implementation of the invention are described in the description with reference to the appended figures in which:
  • there figure 1 illustrates an exploded view of an extendable clasp of the double folding clasp type for a bracelet with a mechanism for adjusting the bracelet according to a first embodiment;
  • there figure 2 illustrates a perspective view of the clasp of the figure 1 in a closed configuration and in a first indexed position;
  • there Figure 3 illustrates a view similar to figure 2 when the clasp is in a second indexed position;
  • there figure 4 illustrates a perspective view of the clasp of the figure 2 when the two pivoting blades are deployed;
  • there Figure 5 illustrates a sectional view along a cross section of the figure 4 ;
  • there Figure 6 illustrates a view similar to Figure 5 when the two pivoting blades have been rotated approximately 270° around their respective pivot axes relative to their position when the clasp is in a closed configuration illustrated in figure 2 ;
  • there Figure 7 illustrates a perspective view of one of the pivoting blades of the Figure 6 when it is in a first indexed position relative to the central support;
  • there figure 8 is a view similar to the Figure 7 , when the pivoting blade is in a second indexed position relative to the central support;
  • there Figure 9 illustrates a partial view of the figure 8 ;
  • there Figure 10 illustrates an exploded view of an extendable clasp of the double folding clasp type for a bracelet with a mechanism for making the bracelet more comfortable according to a second embodiment;
  • there Figure 11 illustrates a perspective view of the clasp of the Figure 10 in a closed configuration and in a first indexed position;
  • there Figure 12 illustrates a view similar to Figure 11 when the clasp is in a second indexed position;
  • there Figure 13 illustrates a perspective view of the clasp of the Figure 12 when the two pivoting blades are deployed;
  • there Figure 14 illustrates a perspective view of the clasp when the two pivoting blades have been rotated approximately 270° about their respective pivot axes relative to their position when the clasp is in a closed configuration shown in Figure 11 ;
  • there Figure 15 illustrates an enlarged perspective view of the Figure 14 at the level of the articulation of the first pivoting blade when the pivoting blade is in a first indexed position,
  • there Figure 16 illustrates a view similar to Figure 15 when the pivoting blade is in a second indexed position,
  • there Figure 17 illustrates a perspective view of an extendable clasp of the simple folding clasp type for a bracelet in a closed configuration according to a third embodiment,
  • there Figure 18 illustrates the clasp of the Figure 17 when the pivoting blade is deployed, and
  • there Figure 19 illustrates a perspective view of a simple folding clasp type expandable clasp for a bracelet in a closed configuration according to a fourth embodiment.

Exemples de mode de réalisation de l'inventionExamples of embodiments of the invention

Selon une première forme de réalisation illustrée par les figures 1 à 9, le fermoir extensible 10 est du type à boucle déployante double (communément appelé boucle déployante papillon) et comporte à cet effet, selon la figure 1, un support central 12 ainsi qu'une première et une seconde lame pivotante 20a, 20b (figure 4) articulées aux extrémités respectives du support central 12 au moyen d'une première et d'une seconde tige 21a, 21b respectivement. Le support central 12 comporte deux bords longitudinaux 14a, 14b (figure 2) légèrement arqués afin d'épouser une partie du contour du poignet.According to a first embodiment illustrated by the figures 1 to 9 , the extensible clasp 10 is of the double folding clasp type (commonly called butterfly folding clasp) and comprises for this purpose, according to the figure 1 , a central support 12 as well as a first and a second pivoting blade 20a, 20b ( figure 4 ) articulated at the respective ends of the central support 12 by means of a first and a second rod 21a, 21b respectively. The central support 12 has two longitudinal edges 14a, 14b ( figure 2 ) slightly arched to fit part of the contour of the wrist.

Les deux bords longitudinaux 14a, 14b sont reliés entre eux par une partie 18 faisant office de support de lame sur lequel une lame flexible 17 est montée. Une partie centrale de lame flexible 17 peut, par exemple, être fixée au support de lame 18 au moyen d'un élément de fixation 19, notamment une vis. A cet effet, la partie centrale de la lame flexible 17 comporte un trou traversant 17a alors que le support de lame 18 comporte un taraudage 18a afin de fixer la partie centrale de la lame flexible 17 contre la face inférieure du support de lame 18. La lame flexible 17 est fixée de sorte à s'étendre le long des bords longitudinaux 14a, 14b du support central.The two longitudinal edges 14a, 14b are connected together by a part 18 acting as a blade support on which a flexible blade 17 is mounted. A central part of flexible blade 17 can, for example, be fixed to the blade support 18 by means of a fixing element 19, in particular a screw. For this purpose, the central part of the flexible blade 17 has a through hole 17a while the blade support 18 has a tapping 18a in order to fix the central part of the flexible blade 17 against the underside of the blade support 18. The flexible blade 17 is fixed so as to extend along the longitudinal edges 14a, 14b of the central support.

Le support central 12 comporte quatre gorges 16a, 16b, 16c, 16d agencées aux extrémités respectives de chacun des deux bords longitudinaux 14a, 14b. Chaque gorge traverse de part en part un des bords longitudinaux et possède une forme incurvée comportant une portion semi-cylindrique à chaque extrémité définissant deux positions indexées. Les gorges peuvent toutefois revêtir différentes formes selon des variantes d'exécution avec la possibilité d'avoir un nombre de positions indexées supérieures à deux afin de permettre un réglage plus précis lors de la mise à l'aise du bracelet.The central support 12 has four grooves 16a, 16b, 16c, 16d arranged at the respective ends of each of the two longitudinal edges 14a, 14b. Each groove passes right through one of the longitudinal edges and has a curved shape comprising a semi-cylindrical portion at each end defining two indexed positions. The grooves can, however, take different shapes depending on execution variants with the possibility of having a number of indexed positions greater than two in order to allow more precise adjustment when making the bracelet comfortable.

Les gorges incurvées 16a, 16b sont agencées en regard l'une de l'autre à une première extrémité du support central 12 de sorte à recevoir les extrémités de la tige 21a de la première lame pivotante 20a alors que les gorges incurvées 16c, 16d sont agencées en regard l'une de l'autre à une seconde extrémité du support central 12 de sorte à recevoir les extrémités de la tige 21b de la seconde lame pivotante 20b. La tête de chaque tige située à une de ses extrémités et un capuchon 22 monté à l'autre de ses extrémités permettent d'empêcher un débattement axial des tiges par rapport au support central 12. Les tiges peuvent être maintenues, sous l'action de la lame flexible 17, contre l'une ou l'autre des portions cylindriques de chaque gorge incurvée représentant une première et seconde position indexée.The curved grooves 16a, 16b are arranged facing each other at a first end of the central support 12 so as to receive the ends of the rod 21a of the first pivoting blade 20a while the curved grooves 16c, 16d are arranged facing each other at a second end of the central support 12 so as to receive the ends of the rod 21b of the second pivoting blade 20b. The head of each rod located at one of its ends and a cap 22 mounted at the other of its ends make it possible to prevent axial movement of the rods relative to the central support 12. The rods can be held, under the action of the flexible blade 17, against one or the other of the cylindrical portions of each curved groove representing a first and second indexed position.

Chaque lame pivotante 20a, 20b comporte un corps 31, et deux bras 34 s'étendant dans le prolongement des bords latéraux du corps 31 afin de former une fenêtre 32, comme on peut le voir notamment sur la figure 4, pour permettre le basculement de chaque lame pivotante 20a, 20b de sorte à ce que la tige correspondante 21a, 21b puisse venir au contact de la lame flexible 17 selon la description qui en sera faite ultérieurement. Une portion terminale de chacun des deux bras 34 comporte un trou traversant 35 agencés en regard l'un de l'autre et dans lesquels sont agencés deux segments de la tige correspondante 21a, 21b.Each pivoting blade 20a, 20b comprises a body 31, and two arms 34 extending in the extension of the lateral edges of the body 31 in order to form a window 32, as can be seen in particular on the figure 4 , to allow the tilting of each pivoting blade 20a, 20b so that the corresponding rod 21a, 21b can come into contact with the flexible blade 17 according to the description which will be made later. A terminal portion of each of the two arms 34 has a through hole 35 arranged facing each other and in which two segments of the corresponding rod 21a, 21b are arranged.

Chaque lame pivotante 20a, 20b comporte par ailleurs un rouleau 24 monté entre les deux bras 34. Plus particulièrement, le rouleau 24 est agencé pour tourner autour d'un axe 25. Cet axe est formé d'un tube 27 avec encoche et d'une goupille 26 avec saignée qui est ajustée à l'intérieur du tube 27 de sorte à centrer ensemble le rouleau 24, le tube 26 et la goupille 25. Les extrémités de celle-ci sont logées dans deux autres trous 36 situé sur la portion terminale de chacun des deux bras 34 à proximité du trou traversant 35.Each pivoting blade 20a, 20b also comprises a roller 24 mounted between the two arms 34. More particularly, the roller 24 is arranged to rotate around an axis 25. This axis is formed of a tube 27 with notch and a pin 26 with groove which is adjusted inside the tube 27 so as to center together the roller 24, the tube 26 and the pin 25. The ends of this are housed in two other holes 36 located on the terminal portion of each of the two arms 34 near the through hole 35.

Chaque lame pivotante 20a, 20b comporte une partie distale pourvue d'une extension 40 comportant un trou traversant 42 dans lequel est agencée une barrette 44 dont les extrémités sont fixées à un organe d'attache 45 destiné à être relié à un premier et un second brin d'un bracelet.Each pivoting blade 20a, 20b comprises a distal part provided with an extension 40 comprising a through hole 42 in which is arranged a bar 44 whose ends are fixed to an attachment member 45 intended to be connected to a first and a second strand of a bracelet.

En référence à la figure 2, le fermoir extensible 10 est dans une configuration fermée dans laquelle les tiges respectives 21a, 21b des première et seconde lames pivotantes 20a, 20b sont agencées dans une première position indexée afin de resserrer le bracelet. Selon cette configuration, les organes d'attache 45 aux brins du bracelet sont situés proche l'un de l'autre.In reference to the figure 2 , the extendable clasp 10 is in a closed configuration in which the respective rods 21a, 21b of the first and second pivoting blades 20a, 20b are arranged in a first indexed position in order to tighten the bracelet. According to this configuration, the attachment members 45 to the strands of the bracelet are located close to each other.

En référence à la figure 3, le fermoir extensible 10 est dans configuration fermée dans laquelle les tiges respectives 21a, 21b des première et seconde lames pivotantes 20a, 20b sont agencées dans une seconde position indexée permettant une mise à l'aise du bracelet. Selon cette configuration, les organes d'attache 45 aux brins du bracelet sont distant l'un par rapport à l'autre.In reference to the Figure 3 , the extensible clasp 10 is in a closed configuration in which the respective rods 21a, 21b of the first and second pivoting blades 20a, 20b are arranged in a second indexed position allowing the bracelet to be placed at ease. According to this configuration, the attachment members 45 to the strands of the bracelet are distant from each other.

Les figures 4 à 8 illustrent les différentes séquences de mouvement des première et seconde lames pivotantes 20a, 20b par rapport au support central 12 afin de faire passer le fermoir 10 d'une première configuration selon la figure 2 à une seconde configuration selon la figure 3. Le mécanisme d'indexation ne permet pas une mise à l'aise de bracelet au porter. Il doit au préalable être ôté du poignet afin de pouvoir effectuer la mise à l'aise du bracelet.THE figures 4 to 8 illustrate the different sequences of movement of the first and second pivoting blades 20a, 20b relative to the central support 12 in order to move the clasp 10 from a first configuration according to the figure 2 to a second configuration according to the Figure 3 . The indexing mechanism does not make the bracelet comfortable to wear. It must first be removed from the wrist in order to be able to put the bracelet at ease.

Les première et seconde lame pivotantes 20a, 20b sont tout d'abord déployées selon les figures 4 et 5. Un pivotement additionnel d'environ 180° est imprimé aux lames pivotantes pour arriver à la configuration du fermoir selon la figure 6. Ce pivotement additionnel est rendu possible grâce à une fenêtre 32 (Figure 4) située sur chaque lame pivotante 20a, 20b à travers de laquelle une première respectivement une seconde portion terminale de la lame flexible 17 est agencée.The first and second pivoting blades 20a, 20b are first deployed according to the figures 4 And 5 . An additional pivot of approximately 180° is given to the pivoting blades to achieve the configuration of the clasp according to the Figure 6 . This additional pivoting is made possible thanks to a window 32 ( Figure 4 ) located on each pivoting blade 20a, 20b through which a first respectively a second terminal portion of the flexible blade 17 is arranged.

Selon la figure 6, les tiges respectives 21a, 21b des première et seconde lames pivotantes 20a, 20b sont en contact avec les portions terminales de la lame flexible 17. Il en résulte que la force qui doit être exercée sur l'une et l'autre des lames pivotantes 20a, 20b selon une direction perpendiculaire à la surface d'appui de la lame flexible 17 sur laquelle repose la tige 21a, 21b de chaque lame pivotante est minimale afin de faire passer la tige correspondante de la première portion cylindrique de la gorge incurvée 16d selon la figure 7 à la seconde portion cylindrique de la gorge incurvée 16d selon la figure 8 afin de passer de l'une à l'autre des deux positions indexées.According to Figure 6 , the respective rods 21a, 21b of the first and second pivoting blades 20a, 20b are in contact with the end portions of the flexible blade 17. As a result, the force which must be exerted on one and the other of the pivoting blades 20a, 20b in a direction perpendicular to the bearing surface of the flexible blade 17 on which rests the rod 21a, 21b of each pivoting blade is minimal in order to pass the corresponding rod of the first cylindrical portion of the curved groove 16d according to there Figure 7 to the second cylindrical portion of the curved groove 16d according to the figure 8 in order to move from one to the other of the two indexed positions.

Il est à noter que le passage des première et seconde lames pivotantes de l'une à l'autre des deux positions indexées peut également se faire en effectuant uniquement un pivotement inférieur à 90° à partir de la configuration fermée du fermoir. Il est en effet possible en partant de la configuration du fermoir selon la figure 5, dans laquelle les rouleaux 24 des première et seconde lame pivotantes 20a, 20b reposent sur une surface correspondante d'appui de la lame flexible, de passer de la première à la seconde position indexée en exerçant une force sur l'une et/ou l'autre des deux lames pivotantes en direction de la lame flexible 17.It should be noted that the passage of the first and second pivoting blades from one to the other of the two indexed positions can also be done by only pivoting less than 90° from the closed configuration of the clasp. It is in fact possible starting from the configuration of the clasp according to the Figure 5 , in which the rollers 24 of the first and second pivoting blades 20a, 20b rest on a corresponding support surface of the flexible blade, to move from the first to the second indexed position by exerting a force on one and/or the the other of the two pivoting blades towards the flexible blade 17.

La force qui doit être exercée sur les première et seconde lames pivotantes 20a, 20b doit être néanmoins bien plus importante qu'en partant de la configuration du fermoir selon la figure 6 et la mise à l'aise de bracelet est par conséquent plus difficile à effectuer.The force which must be exerted on the first and second pivoting blades 20a, 20b must nevertheless be much greater than starting from the configuration of the clasp according to the Figure 6 and putting the bracelet at ease is therefore more difficult to do.

Selon une autre forme de réalisation selon les figures 10 à 16, le fermoir 100 comporte un support central 112 comprenant deux bords longitudinaux 114a, 114b (figure 11) et une lame flexible 117 solidaire du support central 112 et agencée entre et le long des deux bords longitudinaux 114a, 114b. Quatre trous 116a, 116b, 116c, 116d sont agencés aux extrémités respectives de chacun des deux bords longitudinaux 114a, 114b du support central.According to another embodiment according to the figures 10 to 16 , the clasp 100 comprises a central support 112 comprising two longitudinal edges 114a, 114b ( Figure 11 ) and a flexible blade 117 secured to the central support 112 and arranged between and along the two longitudinal edges 114a, 114b. Four holes 116a, 116b, 116c, 116d are arranged at the respective ends of each of the two longitudinal edges 114a, 114b of the central support.

Le fermoir 100 comporte en outre une première et une seconde lame pivotante 120a, 120b (figure 13) comprenant chacune une portion proximale et une portion distale. La portion proximale des première et seconde lame pivotantes 120a, 120b sont articulées respectivement à une première et à une seconde extrémité du support central 112 au moyen d'une première et d'une seconde tige 121a, 121b respectivement dont les extrémités sont montées dans deux trous opposées des quatre trous 116a, 116b, 116c, 116d des bords longitudinaux 114a, 114b du support central 112.The clasp 100 further comprises a first and a second pivoting blade 120a, 120b ( Figure 13 ) each comprising a proximal portion and a distal portion. The proximal portion of the first and second pivoting blades 120a, 120b are articulated respectively to a first and a second end of the central support 112 by means of a first and a second rod 121a, 121b respectively whose ends are mounted in two opposite holes of the four holes 116a, 116b, 116c, 116d of the longitudinal edges 114a, 114b of the central support 112.

La portion distale desdites première et seconde lame pivotantes 120a, 120b est pourvue d'une extension 140 comportant un trou traversant 142 dans lequel est agencée une barrette 144 dont les extrémités sont fixées à un organe d'attache 145 destiné à être relié à un premier et un second brin d'un bracelet.The distal portion of said first and second pivoting blades 120a, 120b is provided with an extension 140 comprising a through hole 142 in which is arranged a bar 144 whose ends are fixed to an attachment member 145 intended to be connected to a first and a second strand of a bracelet.

En référence à la figure 10, chacune des première et seconde lames pivotantes comporte deux bras 134 comprenant chacun une portion terminale. Les portions terminales comportent chacune une première gorge 138 agencées en regard l'une de l'autre et traversées par la tige correspondante 121a, 121b. La tête de chaque tige située à une de ses extrémités et un capuchon 122 monté à l'autre de ses extrémités permettent d'empêcher un débattement axial des tiges par rapport au support central 112.In reference to the Figure 10 , each of the first and second pivoting blades comprises two arms 134 each comprising a terminal portion. The end portions each include a first groove 138 arranged facing each other and crossed by the corresponding rod 121a, 121b. The head of each rod located at one of its ends and a cap 122 mounted at the other of its ends make it possible to prevent axial movement of the rods relative to the central support 112.

Les deux segments de la tige se trouvant dans les deux première gorges 138 opposées et la forme des premières gorges ont été déterminée de sorte à ce que les deux portions de la tige 121a, 121b puissent se déplacer le long desdites gorges 138 lorsque lame pivotante correspondante 120a, 120b est amenée dans une position angulaire prédéterminée par rapport au support central 112 afin d'amener ladite tige 121a, 121b d'une première position indexée à une seconde position indexée.The two segments of the rod located in the two first opposite grooves 138 and the shape of the first grooves have been determined so that the two portions of the rod 121a, 121b can move along said grooves 138 when the corresponding pivoting blade 120a, 120b is brought into a predetermined angular position relative to the central support 112 in order to bring said rod 121a, 121b from a first indexed position to a second indexed position.

Comme on peut le voir aux figures 15 et 16, les deux segments de chaque tige 121a (uniquement la tige 121a de l'une des lames pivotantes est représentée sur ces figures) comporte un méplat 123 alors que les deux première gorges 138 opposées comporte deux extrémités semi-circulaires séparées par une rainure rectiligne 138a.As we can see in figures 15 and 16 , the two segments of each rod 121a (only the rod 121a of one of the pivoting blades is shown in these figures) has a flat 123 while the two first opposite grooves 138 have two semi-circular ends separated by a rectilinear groove 138a .

Selon les figures 14 à 16, cette position angulaire prédéterminée correspond de préférence à une position des première et seconde lame pivotante 120a, 120b après que celles-ci aient effectuées une rotation autour de leur axe de rotation respectif d'un angle supérieur à 250°, par exemple environ 270° par rapport à leur position lorsque le fermoir 100 est dans une configuration fermée.According to figures 14 to 16 , this predetermined angular position preferably corresponds to a position of the first and second pivoting blade 120a, 120b after they have rotated around their respective axis of rotation by an angle greater than 250°, for example approximately 270° relative to their position when the clasp 100 is in a closed configuration.

A cet effet, tout comme pour le fermoir selon la première forme d'exécution illustrée par les figures 1 à 9, les première et seconde lames pivotantes 120a, 120b comportent chacune une fenêtre 132 (figure 14) pour le passage des portions terminales de la lame flexible 170 et ainsi permettre le basculement de chaque lame pivotante 20a, 20b de sorte à ce que le fermoir puisse se retrouver dans la configuration illustrée à la figure 14.For this purpose, just as for the clasp according to the first embodiment illustrated by the figures 1 to 9 , the first and second pivoting blades 120a, 120b each include a window 132 ( Figure 14 ) for the passage of the end portions of the flexible blade 170 and thus allow the tilting of each pivoting blade 20a, 20b so that the clasp can be found in the configuration illustrated in Figure 14 .

Lorsque les première et seconde lame pivotante 120a, 120b se trouvent dans cette position angulaire prédéterminée, le méplat 123 du segment correspondant de la tige, qui est logé dans l'une des extrémités semi-circulaires de la gorge 138, est aligné avec la rainure rectiligne 138a afin que le segment puisse se déplacer le long de cette rainure afin de se loger dans l'autre des extrémités semi-circulaires de la gorge 138.When the first and second pivoting blade 120a, 120b are in this predetermined angular position, the flat 123 of the corresponding segment of the rod, which is housed in one of the semi-circular ends of the groove 138, is aligned with the groove rectilinear 138a so that the segment can move along this groove in order to be housed in the other of the semi-circular ends of the groove 138.

Lorsque le fermoir 100 est dans une configuration fermée, la première et seconde portion terminale de la lame flexible 170 exerce une force respectivement contre la première et seconde tige 121a, 121b afin de maintenir les segments correspondants de chaque tige dans l'une ou l'autre des extrémités semi-circulaires de la gorge 138 afin de verrouiller le fermoir dans l'une ou l'autre des deux positions indexées.When the clasp 100 is in a closed configuration, the first and second end portions of the flexible blade 170 exert a force respectively against the first and second rod 121a, 121b in order to maintain the corresponding segments of each rod in one or the other of the semi-circular ends of the groove 138 in order to lock the clasp in one or the other of the two indexed positions.

Selon la figue 10, les première et seconde lames pivotantes 120a, 120b comportent chacune un rouleau 124 monté pivotant sur un axe 125. Cet axe est formé d'un tube 127 avec encoche et d'une goupille 126 avec saignée qui est ajustée à l'intérieur du tube 127 de sorte à centrer ensemble le rouleau 124, le tube 126 et la goupille 125. Les rouleaux sont agencés contre respectivement une première et une seconde portion terminale de la lame flexible 117 lorsque le fermoir est dans une configuration fermée. Les deux bras 134 des première et seconde lames pivotantes 120a, 120b comportent chacun une seconde gorge 137 agencées en regard l'une de l'autre et traversées par les extrémités respectives de l'axe 125 du rouleau 124.According to fig 10, the first and second pivoting blades 120a, 120b each comprise a roller 124 pivotally mounted on an axis 125. This axis is formed of a tube 127 with notch and a pin 126 with groove which is adjusted to the inside the tube 127 so as to center together the roller 124, the tube 126 and the pin 125. The rollers are arranged against respectively a first and a second end portion of the flexible blade 117 when the clasp is in a closed configuration. THE two arms 134 of the first and second pivoting blades 120a, 120b each include a second groove 137 arranged facing one another and crossed by the respective ends of the axis 125 of the roller 124.

Les première et seconde lames pivotantes 120a, 120b comportent chacune une pièce de liaison 128 comprenant un trou traversant 130 traversé par la tige respective 121a, 121b desdites première et seconde lames pivotantes 120a, 120b. La pièce de liaison 128 comporte en outre deux cornes 129 comprenant chacune un trou 129a. Les extrémités de l'axe 125 du rouleau 124 sont agencées dans le trou respectif 129a de chaque corne 129. Un premier et un second segment de l'axe 125 du rouleau 124 sont agencés dans le trou respectif 129a de chaque corne 129.The first and second pivoting blades 120a, 120b each comprise a connecting piece 128 comprising a through hole 130 crossed by the respective rod 121a, 121b of said first and second pivoting blades 120a, 120b. The connecting part 128 further comprises two horns 129 each comprising a hole 129a. The ends of the axis 125 of the roller 124 are arranged in the respective hole 129a of each horn 129. A first and a second segment of the axis 125 of the roller 124 are arranged in the respective hole 129a of each horn 129.

La tige 121a, 121b respective et l'axe 125 du rouleau 124 de chacune des première et seconde lames pivotantes 120a, 120b sont agencés pour se déplacer ensemble le long respectivement des première et seconde gorges 138, 137 au cours du pivotement des première et seconde lames pivotantes 120a, 120b de sorte à ce que la force exercée par le rouleau 124 sur le support central 112 reste constante lorsque le fermoir est dans une configuration fermée indépendamment de la position indexée des première et seconde lames pivotantes 20a, 20b.The respective rod 121a, 121b and the axis 125 of the roller 124 of each of the first and second pivoting blades 120a, 120b are arranged to move together along respectively the first and second grooves 138, 137 during the pivoting of the first and second pivoting blades 120a, 120b so that the force exerted by the roller 124 on the central support 112 remains constant when the clasp is in a closed configuration independently of the indexed position of the first and second pivoting blades 20a, 20b.

Selon une autre forme de réalisation illustrées par les figures 17 et 18, un fermoir extensible 200 du type à boucle déployante simple comprend un support 212, une lame flexible 217 monté sur le support et s'étendant le long de ses bords latéraux 214a, 214b ainsi qu'une lame pivotante 220 articulée à une première extrémité du support 212 au moyen du tige 221 et coopérant avec une portion terminale de la lame flexible 217 au moyen d'un rouleau 224 de sorte à plaquer la lame pivotante contre le support afin de maintenir le fermoir dans une configuration fermée.According to another embodiment illustrated by the figures 17 and 18 , an extensible clasp 200 of the simple folding clasp type comprises a support 212, a flexible blade 217 mounted on the support and extending along its lateral edges 214a, 214b as well as a pivoting blade 220 articulated at a first end of the support 212 by means of the rod 221 and cooperating with a terminal portion of the flexible blade 217 by means of a roller 224 so as to press the pivoting blade against the support in order to maintain the clasp in a closed configuration.

Un premier organe d'attache 246 à l'un des brins d'un bracelet est agencé à l'autre extrémité du support 212 alors qu'un second organe d'attache 245 à l'autre des brins du bracelet est connecté à une extrémité de la lame pivotante. Le fermoir 200 comporte en outre un mécanisme d'indexation pour déplacer la lame pivotante 220 par rapport au support dans l'une ou l'autre de deux positions indexées. Ce mécanisme est identique à celui décrit pour l'une des deux lames pivotantes du fermoir de la forme de réalisation illustrée par les figures 1 à 9.A first attachment member 246 to one of the strands of a bracelet is arranged at the other end of the support 212 while a second attachment member 245 to the other of the strands of the bracelet is connected to one end of the pivoting blade. The clasp 200 further comprises an indexing mechanism for moving the pivoting blade 220 relative to the support in one or the other of two indexed positions. This mechanism is identical to that described for one of the two pivoting blades of the clasp of the embodiment illustrated by the figures 1 to 9 .

Selon une forme de réalisation illustrée à la figure 19, le fermoir extensible 300 du type à boucle déployante simple comporte un mécanisme d'indexation pour une mise à l'aise du bracelet agencé pour pouvoir déplacer la tige (non visible) par rapport à la lame pivotante 320 afin de positionner la tige dans une position indexée d'au moins deux positions indexées. Le mécanisme d'indexation comporte les mêmes caractéristiques que celles décrites pour le positionnement de la tige de l'une des deux lames pivotantes du fermoir selon la forme de réalisation illustrée par les figures 10 à 16.According to an embodiment illustrated in Figure 19 , the extensible clasp 300 of the simple folding clasp type includes an indexing mechanism for making the bracelet more comfortable, arranged to be able to move the rod (not visible) relative to the pivoting blade 320 in order to position the rod in a indexed position of at least two indexed positions. The indexing mechanism has the same characteristics as those described for the positioning of the rod of one of the two pivoting blades of the clasp according to the embodiment illustrated by the figures 10 to 16 .

Diverses modifications peuvent être apportées au fermoir extensible selon l'invention sans s'écarter de la portée de l'invention telle que définie dans les revendications annexées. Par exemple, la lame flexible n'est pas forcément continue et peut comporter deux portions flexibles distantes l'une de l'autre est agencées pour exercer une force sur les tiges respectives des première et seconde tiges des lames pivotantes.Various modifications can be made to the extensible clasp according to the invention without departing from the scope of the invention as defined in the appended claims. For example, the flexible blade is not necessarily continuous and may comprise two flexible portions spaced apart from each other and arranged to exert a force on the respective rods of the first and second rods of the pivoting blades.

Liste de référenceReference list

Fermoir extensible 10 ; 100 ; 200 ; 300

  • Support central 12 ; 112 ; 212
    • Bords longitudinal 14a, 14b ; 114a, 114b ; 214a ; 214b
      • Gorges 16a, 16b, 16c, 16d
      • Trous 116a, 116b, 116c, 116d
    • Lame flexible 17; 117; 217
      • Trou de fixation 17a
      • Support de lame 18
        Trou de fixation 18a
      • Elément de fixation 19
  • Première et seconde lames pivotantes 20a, 20b ; 120a, 120b ; 220 ; 320
    • Tiges 21a, 21b ; 121a, 121b ; 221 (axe de rotation)
      • Capuchon 22; 122
      • Méplats 123
    • Rouleaux 24; 124
      • Axe 25 ; 125
        • Goupille 26 ; 126 (avec saignée)
        • Tube 27 ; 127 (avec encoche)
      • Pièce de liaison 128
        • Cornes 129
          Trous 129a
        • Trou traversant 130
    • Corps 31
      • Fenêtre 32 ; 132
        Rectangulaire
      • Bras 34; 134
        • Parties proximales
          • Trous traversant 35 pour l'axe de rotation
          • Trous 36 pour le rouleau
          • Gorge 137
          • Gorge 138
            Rainure rectiligne 138a
        • Partie distale
          • Extension 40 ; 140
            • Trous traversant 42 ; 142
            • Barrettes 44; 144
          • Organe d'attache 45 ; 145 ; 246 aux brins du bracelet
Stretch clasp 10; 100; 200; 300
  • Central support 12; 112; 212
    • Longitudinal edges 14a, 14b; 114a, 114b; 214a; 214b
      • Gorges 16a, 16b, 16c, 16d
      • Holes 116a, 116b, 116c, 116d
    • Flexible blade 17; 117; 217
      • Fixing hole 17a
      • Blade holder 18
        Fixing hole 18a
      • Fixing element 19
  • First and second pivoting blades 20a, 20b; 120a, 120b; 220; 320
    • Stems 21a, 21b; 121a, 121b; 221 (axis of rotation)
      • Cap 22; 122
      • Flats 123
    • Rolls 24; 124
      • Axis 25; 125
        • Pin 26; 126 (with bleeding)
        • Tube 27; 127 (with notch)
      • Connecting piece 128
        • Horns 129
          Holes 129a
        • Through hole 130
    • Body 31
      • Window 32; 132
        Rectangular
      • Arm 34; 134
        • Proximal parts
          • Through holes 35 for rotation axis
          • 36 holes for the roller
          • Throat 137
          • Throat 138
            Straight groove 138a
        • Distal part
          • Extension 40; 140
            • Through holes 42; 142
            • Bars 44; 144
          • Attachment organ 45; 145; 246 to the bracelet strands

Claims (15)

  1. An extendable clasp (10; 100; 200; 300) with folding buckle for a bracelet comprising:
    - a support (12; 112; 212) with two longitudinal edges (14a, 14b; 114a, 114b; 214a, 214b),
    - at least one flexible blade (17; 170; 270) rigidly connected to the support, the flexible blade having at least one end portion,
    - at least one pivoting blade (20a, 20b; 120a, 120b; 220; 320) with a proximal portion articulated with one end of the support by means of a rod (21a, 21b; 121a, 121b; 221) and a distal portion designed to be connected to one of the halves of a bracelet, and
    the flexible blade being designed to exert a force on said at least one pivoting blade to press the pivoting blade against the support (12; 112; 212) and hold the clasp in a closed state, the claps being characterized by:
    - an indexing mechanism for adjusting the bracelet for comfort that is designed to move the rod (21a, 21b; 121a, 121b; 221) relative to the support (12) or relative to said at least one pivoting blade (121a, 121b) in order to position the rod in one of at least two indexed positions, and in that
    - the flexible blade is arranged to lock the rod (21a, 21b; 121a, 121b; 221) in said indexed position.
  2. The extendable clasp (200) according to claim 1, wherein the force exerted by the flexible blade (270) is transmitted to the pivoting blade (220) by means of a roller (224) mounted rotatably on the pivoting blade, and wherein the other end of the support has a member (246) for attaching the other half of the bracelet.
  3. The extendable clasp (10; 100) according to claim 1, including first and second pivoting blades (21a, 21b; 121a, 121b), each of which has a proximal portion and a distal portion, the proximal portions of the first and second pivoting blades being articulated respectively with first and second ends of the support (12; 112) by means of first and second rods (21a, 21b; 121a, 121b) respectively, the distal portions of the first and second pivoting blades being designed to be connected to the two halves of the bracelet,
    the indexing mechanism being designed to move the first and second rods (21a, 21b; 121a, 121b) relative to the support (12) or relative to the first or second pivoting blade (120a, 120b) respectively in order to position each of the first and second rods in one of at least two indexed positions, and
    the flexible blade (17; 170) being designed firstly to exert a force on the first and second pivoting blades (20a, 20b; 120a; 120b) to press said pivoting blades against the support (12; 112) and hold the clasp in a closed state, and secondly to lock the first and second rods in the respective indexed positions.
  4. The extendable clasp (10; 100) according to claim 3, wherein each of the first and second pivoting blades (20a, 20b; 120a, 120b) has a roller (24; 124) arranged respectively against the first and second end portions of the flexible blade (17; 117) when the clasp is in a closed state.
  5. The extendable clasp (10; 100) according to claim 4, wherein each distal portion of the first and second pivoting blades (20a, 20b; 120a, 120b) has a member (45; 145) for attaching the halves of the bracelet, and wherein each proximal portion of the first and second pivoting blades (20a, 20b; 120a, 120b) includes the roller (24; 124), the roller of each pivoting blade being designed to bend the corresponding end portion of the flexible blade (17; 217) and to roll along a portion of said flexible blade when a force is exerted on the attachment member (45; 145) in a direction liable to bring the clasp into a deployed state.
  6. The extendable clasp (10) according to one of the preceding claims, wherein the support (12) has four grooves (16a, 16b, 16c, 16d) arranged at the respective ends of each of the two longitudinal edges (14a, 14b), and wherein the first and second rods (21a, 21b) traverse respectively the first and second pivoting blades (20a, 20b), the two ends of each rod (21a, 21b) being seated in two opposing grooves (16a, 16b; 16c, 16d), and the shape of the two opposing grooves defining said at least two indexed positions.
  7. The extendable clasp (10) according to the preceding claim, wherein each of the four grooves (16a, 16b, 16c, 16d) is curved and passes all the way through one of the longitudinal edges (14a, 14b) of the support (12).
  8. The extendable clasp (10) according to one of claims 3 to 7, wherein each of the first and second pivoting blades (20a, 20b) has a body (31) and two arms (34) extending the lateral edges of the body (31) to form a window (32) enabling each pivoting blade (20a, 20b) to pivot, thereby enabling the corresponding rod (21a, 21b)to come into contact with the flexible blade (17).
  9. The extendable clasp (10) according to the preceding claim and claim 4, wherein an end portion of each of the two arms (34) has a first through-hole (35), said holes being arranged opposite one another and receiving two segments of the corresponding rod (21a, 21b), the end portion of each of the two arms (34) also having a second hole (36), said holes being arranged opposite one another and receiving the ends of a shaft about which the roller (24) is mounted pivotingly.
  10. The extendable clasp (100) according to one of claims 1 to 5, wherein the support (112) has four holes (116a, 116b, 116c, 116d) arranged at the respective ends of each of the two longitudinal edges (114a, 114b), the two ends of each rod (121a, 121b) being seated in two opposing holes (116a, 116b; 116c, 116d), and wherein each of the first and second pivoting blades (120a, 120b) has two arms (134), each having a first groove (138), said grooves being arranged opposite one another and being traversed by the corresponding rod (121a, 121b), and wherein the two segments of said rod are in the two first opposing grooves (138) and the shape of said first grooves is such that the two segments of said rod (121a, 121b) can move along said grooves (138) when the corresponding pivoting blade is brought into a predetermined angular position in relation to the support (112) in order to move said rod (121a, 121b) from a first indexed position to a second indexed position.
  11. The extendable clasp (100) according to claim 10, wherein each of the first and second pivoting blades (120a, 120b) has a roller (124) that is mounted pivotingly on a shaft (125), each roller (124) being arranged respectively against the first and second end portions of the flexible blade (117) when the clasp is in a closed state, and wherein each of the two arms (34) of the first and second pivoting blades (120a, 120b) has a second groove (137), said grooves being arranged opposite one another and being traversed by the respective ends of the shaft (125) of the roller (124).
  12. The extendable clasp (100) according to claim 11, wherein each of the first and second pivoting blades (120a, 120b) has a linking part (128) with a through-hole (130) traversed by the respective rod (121a, 121b) of said first and second pivoting blades (120a, 120b), the linking part (128) also having two lugs (129) each of which has athrough-hole (129a), first and second segments of the shaft (125) of the roller (124) being arranged in the respective hole (129a) of each lug (129).
  13. The extendable clasp (100) according to claim 11 or 12, wherein the respective rod (121a, 121b) and the shaft (125) of the roller (124) of each of the first and second pivoting blades (120a, 120b) are designed to move together along the first and second grooves (138, 137) respectively when the first and second pivoting blades (120a, 120b) are pivoted, such that the force exerted by the first and second end portions of the flexible blade (117) on the roller (124) of the first and second pivoting blades (120a, 120b) respectively remains constant when the clasp is in a closed state, regardless of the indexed position of the first and second pivoting blades (120a, 120b).
  14. A bracelet including the extendable clasp according to any one of the preceding claims.
  15. A watch including the bracelet according to claim 14.
EP21729006.3A 2020-05-28 2021-05-21 Extendable clasp with folding buckle for a bracelet in particular for a watch Active EP4157026B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00637/20A CH717459A1 (en) 2020-05-28 2020-05-28 Extendable clasp with folding clasp for a bracelet, in particular a watch.
PCT/IB2021/054417 WO2021240317A1 (en) 2020-05-28 2021-05-21 Extendable clasp with folding buckle for a bracelet in particular for a watch

Publications (2)

Publication Number Publication Date
EP4157026A1 EP4157026A1 (en) 2023-04-05
EP4157026B1 true EP4157026B1 (en) 2024-04-10

Family

ID=72242891

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21729006.3A Active EP4157026B1 (en) 2020-05-28 2021-05-21 Extendable clasp with folding buckle for a bracelet in particular for a watch

Country Status (4)

Country Link
EP (1) EP4157026B1 (en)
CN (1) CN115605111A (en)
CH (1) CH717459A1 (en)
WO (1) WO2021240317A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2842081B1 (en) * 2002-07-11 2004-08-27 Chatelain Sa G & F AUTOMATIC CLASP FOR A WATCH STRAP
EP1464245A1 (en) * 2003-04-03 2004-10-06 Jörg M. Hysek Fastener with folding buckle
CH711548B1 (en) * 2015-09-18 2019-12-30 Boucledor Sa Folding clasp.
CN106617527B (en) * 2016-12-01 2019-01-25 华为机器有限公司 A kind of watchband length adjustment device, watchband and wrist-watch
EP3412168B1 (en) * 2017-06-07 2020-03-25 Omega SA Clasp for bracelet

Also Published As

Publication number Publication date
WO2021240317A1 (en) 2021-12-02
CN115605111A (en) 2023-01-13
EP4157026A1 (en) 2023-04-05
CH717459A1 (en) 2021-11-30

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