EP3292784B1 - Watch strap clasp - Google Patents

Watch strap clasp Download PDF

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Publication number
EP3292784B1
EP3292784B1 EP17189715.0A EP17189715A EP3292784B1 EP 3292784 B1 EP3292784 B1 EP 3292784B1 EP 17189715 A EP17189715 A EP 17189715A EP 3292784 B1 EP3292784 B1 EP 3292784B1
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EP
European Patent Office
Prior art keywords
clasp
slide
cover
shafts
pair
Prior art date
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Active
Application number
EP17189715.0A
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German (de)
French (fr)
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EP3292784A1 (en
Inventor
Johnn MEN CHOY
Huynh PHUOC HAI
Huy Van TRAN
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.)
Ball Watch Co SA
Original Assignee
Ball Watch Co SA
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Publication date
Application filed by Ball Watch Co SA filed Critical Ball Watch Co SA
Publication of EP3292784A1 publication Critical patent/EP3292784A1/en
Application granted granted Critical
Publication of EP3292784B1 publication Critical patent/EP3292784B1/en
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    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
    • A44C5/18—Fasteners for straps, chains or the like
    • A44C5/22—Fasteners for straps, chains or the like for closed straps
    • A44C5/24—Fasteners for straps, chains or the like for closed straps with folding devices
    • 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 watchmaking. It relates, more particularly, a wristwatch clasp with one or folding clasps and a system of ease. Indeed, particularly for clasps intended to be used with metal link bracelets, but not exclusively, it is not possible to easily adjust the length of the bracelet when the watch is worn. However, it is known that the wrist size of the wearer of the watch can vary during the day, depending on the activity or the temperature. In addition, depending on the activity, the user may appreciate to tighten his bracelet or loosen it slightly. If it is enough to change the hole of the strap used for a clasp, the operation is not simple with a metal bracelet, nor with a clasp with folding clasp mounted on a flexible bracelet.
  • So-called adjustment systems generally integrated into the clasps with folding clasp, allow a fine adjustment of the total length of the bracelet (that is to say of the bracelet and the clasp in the locked position), for take into account the different situations or variations in the wrist size of the user.
  • the cover further comprises locking means arranged to cooperate with a fastening structure integral with the chassis, controlled by pushers to move between a hooking position in which the hooking structure is adapted to cooperate with the locking means to lock the clasp, and a free position in which the attachment structure leaves free the locking means.
  • the clasp further comprises a slideway, a first end of which is slidably mounted in the lid along the longitudinal axis of the clasp, and a second end of which is intended to be connected to a bracelet, said slide comprising a first pair of pads, between which the first strand is likely to take place when the clasp is in the locked position. In this position, the pads are arranged opposite the stretchers.
  • Document is known EP1908366 , a clasp comprising a sliding slide in the edges of a lid, whose main surface is articulated relative to the rim of the lid.
  • a rack is formed in the lower face of the main surface, so as to cooperate with the slide to lock its longitudinal position.
  • clasps with folding clasp are known, incorporating a system of ease.
  • the one proposed in the document CH698981 discloses an adjustment system comprising a slider slidably mounted in the lid of the clasp. This slide comprises a notch adapted to cooperate with a stop structure pivotally mounted on a support member integral with the lid. Actuation of a pusher releases the adjustment system without opening the bracelet.
  • such a clasp has the disadvantage that inadvertent actuation of the pusher does not disturb the position of the clasp, with discomfort caused to the user, and at worst, the risk of losing the watch.
  • the present invention therefore aims to provide a clasp free from the aforementioned drawbacks, that is to say offering improved safety by compared to untimely adjustment, keeping a compact and simple system.
  • the document CH701806 discloses a clasp according to the preamble of claim 1.
  • a change of adjustment of the position of the first slide requires to open the clasp completely. It is less likely that such an opening is made inadvertently, with respect to an involuntary actuation of an actuating member, specific to the adjustment of the attachment, as in the state of the art. .
  • the notch and the stop member are rigidly positioned on constituent elements of the clasp, which does not require the provision of mobile systems for the adjustment structure.
  • This clasp is of the folding clasp type and generally comprises a frame 10, on which is mounted a cover 12, hinged to the frame 10 by means of at least one hinged strand and forming what is called the folding clasp.
  • a cover 12 hinged to the frame 10 by means of at least one hinged strand and forming what is called the folding clasp.
  • each cover 12 further comprises locking means 14 arranged to cooperate with a hooking structure 16 integral with the frame 10.
  • This hooking structure 16 is controlled by pushers 18 to move between a attachment position in which the attachment structure 16 is adapted to cooperate with the locking means 14 to lock the clasp, and a free position, in which the attachment structure 16 leaves free the locking means 14.
  • the frame 10 is provided with a base 100 and two pairs of stretchers 102.
  • the shafts 102 extend parallel to each other from the base 100 in the same plane.
  • the pairs of stretchers 102 are symmetrical with respect to each other, with reference to a transverse axis passing through the middle of the frame 10 and perpendicular to the longitudinal axis of the clasp. This longitudinal axis is defined as the axis that connects the ends of the clasp intended to be connected to the bracelet.
  • the first part of the cover 12 is connected to the frame 10 by means of a first strand articulated with the frame 10 by a first of its ends and arranged to take place between the shafts 102 when the clasp is in the locked position.
  • the first strand 20 is further articulated by a second end with the first part of the cover 12.
  • a first slide 30 is slidably mounted along the longitudinal axis of the clasp, by a first end in the first part of the lid 12. By its second end, the first slide 30 is intended to be connected to one end of a bracelet, for example bracelet type links.
  • the first slide 30 comprises a first pair of pads 32 interconnected and between which the first strand 20 is likely to take place when the clasp is in the locked position. Note that when the clasp is in the locked position, with the first strand 20 positioned between the shafts 102 and between the pads 32, the latter are arranged opposite the shafts 102. In other words, the pads 32 and the stretchers 102 define together and between them, a housing in which takes place the first strand 20 when the clasp is in the locked position.
  • the second portion of the cover 12 is connected to the frame 10 by means of a second strand 220 hinged to the frame 10 by a first end and arranged to take place between the stretchers 102 of the second pair of stretchers 102 when the clasp is in the locked position.
  • the second strand 220 is further articulated by a second end with the second part of the cover 12.
  • a second slide is also slidably mounted along the longitudinal axis of the clasp, in the second portion of the cover 12. By its second end, the second slide 230 is intended to be mounted at the other end of the bracelet.
  • the second slide 230 comprises a second pair of pads 232, between which the second strand 220 is likely to take place when the clasp is in the locked position, said pads of the second pair of pads being then arranged opposite the shafts 102 of the second pair of stretchers 102.
  • first slideway 30, respectively the second slideway 230 are provided with a pair of projecting studs 34, 234, extending laterally, facing each other, that is to say, say on the same axis.
  • These pads form sliders arranged to slide in grooves formed inside their respective cover portion 12.
  • the studs 34, 234 are of oblong shapes and allow not only a translational movement along the longitudinal axis, but also a limited rotation along an axis passing through the studs.
  • the dimensions of the oblong By adjusting the dimensions of the oblong, one can define the maximum angle of rotation of the first slide 30 and the second slide 230, with reference to their respective cover 12.
  • the slides 30, 230 may be engaged in their respective lid portion 12, simply by arranging them transversely with respect to the lid 12, that is to say by arranging the axis passing through the studs 34, 234 to bring it closer to an orientation parallel to the longitudinal axis of the clasp. It is thus possible to engage the studs in the grooves and ensure their engagement by then placing perpendicularly the axis of the studs 34, 234 and the longitudinal axis of the clasp. Just provide a simple stop at the ends of the grooves, without them being removable. This provides a particularly simple mounting clasp. Once connected to the bracelet, the tension that it exerts on the slides is enough to maintain them in the longitudinal axis. It may be noted that in their proximal position, defining the length of the shortest clasp, the slides are preferably entirely housed in the covers, with the exception of the parts useful for connection with the bracelet.
  • each portion of the cover 12 comprises a pin 160, the two pins 160 being juxtaposed when the clasp is locked. They comprise at their end a groove 162 with which the notches 140 can cooperate more particularly.
  • the pins 160 pass through the cover 46 in an opening 48 that it comprises for positioning the grooves 162 at the notches 140.
  • the clasp further comprises a structure for adjusting the position of the first slideway 30 with reference to the cover 12 along the longitudinal axis, making it possible to obtain a clutching system.
  • the adjustment structure is formed by a notch 50 arranged on the pads 32, associated with a stop member 60, integral with the shafts 102.
  • each stretcher and each pad comprises such a control structure, in order to have a distribution of forces and constraints that is symmetrical. It would also be possible to have only one slide adjustment structure.
  • the notching 50 has a succession of teeth, preferably triangular, having a substantially right angle with the surface of the pads.
  • the stop member 60 also has at least one tooth, if necessary, several, with which the notch 50 can cooperate.
  • the tooth is advantageously also triangular, having a substantially straight angle with the surface of the shafts 102.
  • the surfaces of the notching 50 perpendicular to the pad and the surfaces of the stop member 60 perpendicular to the stretcher associated therewith, are arranged to bear against each other and thus to define a longitudinal position of the first slide 30. If there are several stop members, they have between them an interval for accommodating there at least one tooth of the notching 50, in any case, a whole number of teeth.
  • the system is functional with a stop member 60 having a single surface cooperating with the notch 50. Alternatively, the stop member could be recessed instead of protruding.
  • the first slide 30 can be manipulated when the clasp is open, so as to pull the notch 50 of the stop member 60.
  • the first slide 30 can be displaced in translation with reference to the cover 12, in order to modify the notch tooth 50 cooperating with the stop member 60.
  • the clasp further comprises a structure for adjusting the position of the second slide 230 with reference to the second portion of the cover 12 along the longitudinal axis.
  • the adjustment structure is formed by a second notch 250 arranged on the pads 232 of the second pair of pads, associated with a second stop member 260 secured to the shafts 102 of the second pair of shafts.
  • each stretcher and each pad comprises such an adjustment structure, in order to have a distribution of forces and stresses which is symmetrical.
  • the clasp further comprises a first elastic tongue 70 interposed between the first portion of the cover 12 and the first slide 30, and a second elastic tongue 270 interposed between the second cover portion 12 and the second slide 230.
  • the tabs 70, 270 form a U, a first branch 72, 272, shorter, allows the attachment of the tongue on the portion of the cover 12.
  • the second branch 72, 274 of the U exerts a elastic pressure against the first slide 30, respectively the second slide 230, tending to press them towards their respective pairs of shafts 102.
  • Each elastic tongue is arranged so as to maintain the engagement 50 engaged against the stop member 60, until the maximum rotational setting of the first / second slide 230, with respect to its axis of rotation passing through the pads.
  • the elastic tongues 70, 270 thus make it possible to maintain the engagement of the catch 50, 250 in the stop member 60, 260, when the adjustment of the length has been carried out and the clasp is being folded, but it has not been locked yet.
  • the tongues also make it possible to maintain the engagement when the bracelet, worn, exerts stresses on the first 30 / second slide 230, which could risk disengaging the notch 50, 250 of the stop member 60, 260.
  • a user wanting to modify the useful length of his clasp will open the latter by actuating the locking means 14, by means of the pushers 18.
  • the clasp Once the clasp is open ( Fig. 4a ), it can rotate the slides 30, 230 about their axis defined by the pads 34, 234, to clear the notches 50, 250 of the stop structures 60, 260 and thus be able to move the one and / or the 30. 230.
  • the resilient tongues 70, 270 already press the notch 50, 250 of the slides 30, 230 against their stop member 60, 260 respectively. Locking the clasp then makes it possible to secure the setting ( Fig. 4c ).
  • the elastic tabs 70, 270 allow to maintain the adjustment position, apart from a manual action exerted against the elastic tongues. This avoids having to adjust the clasp at each opening.
  • a folding blade type extension system 80 known as Flip-Lock, can be interposed between the slides and the bracelet.
  • the blades of the extender can take place between the pads of their respective slide, or expand to provide a bracelet of additional length, for example to arrange the watch over a wetsuit.

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Description

Domaine techniqueTechnical area

La présente invention se rapporte au domaine de l'horlogerie. Elle concerne, plus particulièrement, un fermoir de bracelet de montre comportant une ou des boucles déployantes ainsi qu'un système de mise à l'aise. En effet, particulièrement pour les fermoirs destinés à être utilisés avec des bracelets à maillons métalliques, mais pas exclusivement, il n'est pas possible de régler aisément la longueur du bracelet lorsque la montre est portée. Or, on sait que la taille du poignet du porteur de la montre peut varier au cours de la journée, en fonction de l'activité ou de la température. Par ailleurs, selon l'activité, l'utilisateur peut apprécier de resserrer son bracelet ou de le desserrer légèrement. S'il suffit de changer le trou du bracelet utilisé pour un fermoir à ardillon, l'opération n'est pas simple avec un bracelet métallique, ni avec un fermoir à boucle déployante monté sur un bracelet souple.The present invention relates to the field of watchmaking. It relates, more particularly, a wristwatch clasp with one or folding clasps and a system of ease. Indeed, particularly for clasps intended to be used with metal link bracelets, but not exclusively, it is not possible to easily adjust the length of the bracelet when the watch is worn. However, it is known that the wrist size of the wearer of the watch can vary during the day, depending on the activity or the temperature. In addition, depending on the activity, the user may appreciate to tighten his bracelet or loosen it slightly. If it is enough to change the hole of the strap used for a clasp, the operation is not simple with a metal bracelet, nor with a clasp with folding clasp mounted on a flexible bracelet.

Des systèmes dits de mise-à-l'aise, généralement intégrés dans les fermoirs à boucle déployante, permettent un réglage fin de la longueur totale du bracelet (c'est-à-dire du bracelet et du fermoir en position verrouillée), pour tenir compte des différentes situations ou des variations de taille du poignet de l'utilisateur.So-called adjustment systems, generally integrated into the clasps with folding clasp, allow a fine adjustment of the total length of the bracelet (that is to say of the bracelet and the clasp in the locked position), for take into account the different situations or variations in the wrist size of the user.

Ainsi, l'invention concerne un fermoir du type comprenant :

  • un châssis doté d'une embase et d'au moins une première paire de brancards s'étendant parallèlement l'un à l'autre à partir de l'embase dans un même plan, et
  • un couvercle relié au châssis au moyen d'un premier brin articulé avec le châssis par une première de ses extrémités et agencé pour prendre place entre les brancards lorsque le fermoir est en position verrouillée, le premier brin étant en outre articulé par une deuxième extrémité avec le couvercle.
Thus, the invention relates to a clasp of the type comprising:
  • a chassis having a base and at least a first pair of stretchers extending parallel to each other from the base in the same plane, and
  • a cover connected to the frame by means of a first strand articulated with the frame by a first of its ends and arranged to take place between the shafts when the clasp is in the locked position, the first strand being further articulated by a second end with lid.

Le couvercle comprend en outre des moyens de verrouillage agencés pour coopérer avec une structure d'accroche solidaire du châssis, commandée par des poussoirs pour évoluer entre une position d'accroche dans laquelle la structure d'accroche est apte à coopérer avec les moyens de verrouillage pour verrouiller le fermoir, et une position libre dans laquelle la structure d'accroche laisse libre les moyens de verrouillage.The cover further comprises locking means arranged to cooperate with a fastening structure integral with the chassis, controlled by pushers to move between a hooking position in which the hooking structure is adapted to cooperate with the locking means to lock the clasp, and a free position in which the attachment structure leaves free the locking means.

Le fermoir comprend encore une glissière, dont une première extrémité est montée coulissante dans le couvercle selon l'axe longitudinal du fermoir, et dont une deuxième extrémité est destinée à être reliée à un bracelet, ladite glissière comprenant une première paire de patins, entre lesquels le premier brin est susceptible de prendre place lorsque le fermoir est en position verrouillée. Dans cette position, les patins sont disposés en regard des brancards.The clasp further comprises a slideway, a first end of which is slidably mounted in the lid along the longitudinal axis of the clasp, and a second end of which is intended to be connected to a bracelet, said slide comprising a first pair of pads, between which the first strand is likely to take place when the clasp is in the locked position. In this position, the pads are arranged opposite the stretchers.

Etat de la techniqueState of the art

On connaît du document EP1908366 , un fermoir comprenant une glissière coulissant dans les rebords d'un couvercle, dont la surface principale est articulée par rapport au rebord du couvercle. Une crémaillère est ménagée dans la face inférieure de la surface principale, de manière à pouvoir coopérer avec la glissière pour bloquer sa position longitudinale. Un tel système est particulièrement complexe à mettre en oeuvre, avec l'articulation du couvercle et la réalisation de la crémaillère.Document is known EP1908366 , a clasp comprising a sliding slide in the edges of a lid, whose main surface is articulated relative to the rim of the lid. A rack is formed in the lower face of the main surface, so as to cooperate with the slide to lock its longitudinal position. Such a system is particularly complex to implement, with the articulation of the cover and the realization of the rack.

On connait d'autres fermoirs à boucle déployante, intégrant un système de mise à l'aise. Par exemple, celui proposé dans le document CH698981 , divulgue un système de réglage comportant une glissière montée coulissante dans le couvercle du fermoir. Cette glissière comprend un crantage apte à coopérer avec une structure d'arrêt montée basculante sur un élément d'appui solidaire du couvercle. L'actionnement d'un poussoir permet de libérer le système de réglage sans ouvrir le bracelet.Other clasps with folding clasp are known, incorporating a system of ease. For example, the one proposed in the document CH698981 , discloses an adjustment system comprising a slider slidably mounted in the lid of the clasp. This slide comprises a notch adapted to cooperate with a stop structure pivotally mounted on a support member integral with the lid. Actuation of a pusher releases the adjustment system without opening the bracelet.

Ainsi, un tel fermoir présente l'inconvénient qu'un actionnement intempestif du poussoir ne dérègle la position du fermoir, avec une gêne causée à l'utilisateur, et au pire, le risque de perdre la montre.Thus, such a clasp has the disadvantage that inadvertent actuation of the pusher does not disturb the position of the clasp, with discomfort caused to the user, and at worst, the risk of losing the watch.

La présente invention a donc pour but de proposer un fermoir exempt des inconvénients susmentionnés, c'est-à-dire offrant une sécurité améliorée par rapport à un déréglage intempestif, en conservant un système compact et simple.The present invention therefore aims to provide a clasp free from the aforementioned drawbacks, that is to say offering improved safety by compared to untimely adjustment, keeping a compact and simple system.

Le document CH701806 décrit un fermoir selon le préambule de la revendication 1.The document CH701806 discloses a clasp according to the preamble of claim 1.

Divulguation de l'inventionDisclosure of the invention

De façon plus précise, l'invention concerne un fermoir de bracelet de montre, comportant :

  • un châssis doté d'une embase et d'au moins une première paire de brancards s'étendant parallèlement l'un à l'autre à partir de l'embase dans un même plan, et
  • un couvercle relié au châssis au moyen d'un premier brin articulé avec le châssis par une première de ses extrémités et agencé pour prendre place entre les brancards lorsque le fermoir est en position verrouillée, ledit premier brin étant en outre articulé par une deuxième extrémité avec le couvercle, ledit couvercle comprenant en outre des moyens de verrouillage agencés pour coopérer avec une structure d'accroche solidaire du châssis, commandée par des poussoirs pour évoluer entre une position d'accroche dans laquelle la structure d'accroche est apte à coopérer avec les moyens de verrouillage pour verrouiller le fermoir, et une position libre, dans laquelle la structure d'accroche laisse libre les moyens de verrouillage,
  • une glissière, dont une première extrémité est montée coulissante dans le couvercle selon l'axe longitudinal du fermoir, et dont une deuxième extrémité est destinée à être reliée à un bracelet, ladite glissière comprenant une première paire de patins, entre lesquels le premier brin est susceptible de prendre place lorsque le fermoir est en position verrouillée, lesdits patins étant alors disposés en regard des brancards, caractérisé en ce qu'il comprend une structure de réglage de la position de la première glissière en référence au couvercle selon l'axe longitudinal, ladite structure de réglage étant formée par un crantage agencé sur lesdits patins, et par un organe d'arrêt, solidaire des brancards, le crantage et l'organe d'arrêt étant agencés pour coopérer l'un avec l'autre et bloquer la translation de la première glissière quand le fermoir est en position verrouillée.
More specifically, the invention relates to a watchband clasp, comprising:
  • a chassis having a base and at least a first pair of stretchers extending parallel to each other from the base in the same plane, and
  • a cover connected to the frame by means of a first strand articulated with the frame by a first of its ends and arranged to take place between the shafts when the clasp is in the locked position, said first strand being further articulated by a second end with the cover, said cover further comprising locking means arranged to cooperate with a fastening structure secured to the frame, controlled by pushers to move between a hooking position in which the hooking structure is adapted to cooperate with the locking means for locking the clasp, and a free position, in which the attachment structure leaves the locking means free,
  • a slide, whose first end is slidably mounted in the cover along the longitudinal axis of the clasp, and a second end of which is intended to be connected to a bracelet, said slide comprising a first pair of pads, between which the first strand is likely to take place when the clasp is in the locked position, said pads being then arranged opposite the stretchers, characterized in that it comprises a structure for adjusting the position of the first slide with reference to the cover along the longitudinal axis, said adjustment structure being formed by a notch arranged on said pads, and by a stop member, integral with the shafts, the notches and the stop member being arranged to cooperate with one another and to block the translation the first slide when the clasp is in the locked position.

Ainsi, un changement de réglage de la position de la première glissière nécessite d'ouvrir totalement le fermoir. Il est moins probable qu'une telle ouverture se fasse de manière intempestive, par rapport à un actionnement involontaire d'un organe d'actionnement, spécifique au réglage de la mise-à-l'aise, comme dans l'état de la technique. De plus, le crantage et l'organe d'arrêt sont positionnés rigidement sur des éléments constitutifs du fermoir, ce qui ne nécessite pas de prévoir de systèmes mobiles pour la structure de réglage.Thus, a change of adjustment of the position of the first slide requires to open the clasp completely. It is less likely that such an opening is made inadvertently, with respect to an involuntary actuation of an actuating member, specific to the adjustment of the attachment, as in the state of the art. . In addition, the notch and the stop member are rigidly positioned on constituent elements of the clasp, which does not require the provision of mobile systems for the adjustment structure.

Les revendications dépendantes concernent d'autres caractéristiques de l'invention.The dependent claims relate to other features of the invention.

Une revendication indépendante concerne un procédé de réglage d'un fermoir selon l'invention, comprenant les étapes de :

  • déverrouiller le fermoir et ouvrir au moins le premier couvercle,
  • faire pivoter la première glissière en référence au premier couvercle pour dégager le crantage de la structure d'arrêt,
  • déplacer la première glissière en translation en référence au premier couvercle,
  • fermer le premier couvercle sur le châssis et verrouiller le fermoir.
An independent claim relates to a method of adjusting a clasp according to the invention, comprising the steps of:
  • unlock the clasp and open at least the first lid,
  • pivoting the first slide with reference to the first lid to disengage the notch of the stop structure,
  • move the first slide in translation with reference to the first cover,
  • close the first cover on the frame and lock the clasp.

Brève description des dessinsBrief description of the drawings

D'autres détails de l'invention apparaîtront plus clairement à la lecture de la description qui suit, faite en référence au dessin annexé dans lequel :

  • la figure 1 montre un fermoir selon un mode de réalisation préféré de l'invention, représenté en perspective dans un état verrouillé,
  • la figure 2 représente un fermoir selon l'invention dans une vue en coupe,
  • la figure 3 est une vue éclatée d'un mode de réalisation préféré de l'invention, et
  • les figures 4a, 4b et 4c représentent les différentes étapes de réglage d'un fermoir selon un mode de réalisation préféré de l'invention.
Other details of the invention will emerge more clearly on reading the description which follows, made with reference to the appended drawing in which:
  • the figure 1 shows a clasp according to a preferred embodiment of the invention, shown in perspective in a locked state,
  • the figure 2 represents a clasp according to the invention in a sectional view,
  • the figure 3 is an exploded view of a preferred embodiment of the invention, and
  • the Figures 4a, 4b and 4c represent the various steps of adjusting a clasp according to a preferred embodiment of the invention.

Mode de réalisation de l'inventionEmbodiment of the invention

On a représenté sur la figure 1, un fermoir de bracelet selon un mode de réalisation préféré de l'invention. Ce fermoir est de type à boucle déployante et comprend de manière générale un châssis 10, sur lequel est monté un couvercle 12, articulé sur le châssis 10 par l'intermédiaire d'au moins un brin articulé et formant ce que l'on appelle la boucle déployante. Dans le mode de réalisation illustré, on a deux couvercles 12, qui peut également être considéré comme un couvercle en deux parties, chacun étant relié au châssis 10 par sa propre boucle déployante.We have shown on the figure 1 , a bracelet clasp according to a preferred embodiment of the invention. This clasp is of the folding clasp type and generally comprises a frame 10, on which is mounted a cover 12, hinged to the frame 10 by means of at least one hinged strand and forming what is called the folding clasp. In the illustrated embodiment, there are two covers 12, which can also be considered as a two-part cover, each being connected to the frame 10 by its own folding clasp.

Comme on le détaillera ci-après, chaque couvercle 12 comprend en outre des moyens de verrouillage 14 agencés pour coopérer avec une structure d'accroche 16 solidaire du châssis 10. Cette structure d'accroche 16 est commandée par des poussoirs 18 pour évoluer entre une position d'accroche dans laquelle la structure d'accroche 16 est apte à coopérer avec les moyens de verrouillage 14 pour verrouiller le fermoir, et une position libre, dans laquelle la structure d'accroche 16 laisse libre les moyens de verrouillage 14.As will be detailed below, each cover 12 further comprises locking means 14 arranged to cooperate with a hooking structure 16 integral with the frame 10. This hooking structure 16 is controlled by pushers 18 to move between a attachment position in which the attachment structure 16 is adapted to cooperate with the locking means 14 to lock the clasp, and a free position, in which the attachment structure 16 leaves free the locking means 14.

De manière plus précise, et comme on le voit mieux sur la vue éclatée de la figure 3, le châssis 10 est doté d'une embase 100 et deux paires de brancards 102. Pour chacune de ces paires, les brancards 102 s'étendent parallèlement l'un à l'autre à partir de l'embase 100 dans un même plan. Les paires de brancards 102 sont symétriques l'une par rapport à l'autre, en référence à un axe transversal passant par le milieu du châssis 10 et perpendiculaire à l'axe longitudinal du fermoir. Cet axe longitudinal est défini comme l'axe qui relie les extrémités du fermoir destinées à être connectées au bracelet.More precisely, and as we see best on the exploded view of the figure 3 , the frame 10 is provided with a base 100 and two pairs of stretchers 102. For each of these pairs, the shafts 102 extend parallel to each other from the base 100 in the same plane. The pairs of stretchers 102 are symmetrical with respect to each other, with reference to a transverse axis passing through the middle of the frame 10 and perpendicular to the longitudinal axis of the clasp. This longitudinal axis is defined as the axis that connects the ends of the clasp intended to be connected to the bracelet.

La première partie du couvercle 12 est reliée au châssis 10 au moyen d'un premier brin 20 articulé avec le châssis 10 par une première de ses extrémités et agencé pour prendre place entre les brancards 102 lorsque le fermoir est en position verrouillée. Le premier brin 20 est en outre articulé par une deuxième extrémité avec la première partie du couvercle 12.The first part of the cover 12 is connected to the frame 10 by means of a first strand articulated with the frame 10 by a first of its ends and arranged to take place between the shafts 102 when the clasp is in the locked position. The first strand 20 is further articulated by a second end with the first part of the cover 12.

Une première glissière 30 est montée coulissante selon l'axe longitudinal du fermoir, par une première extrémité dans la première partie du couvercle 12. Par sa deuxième extrémité, la première glissière 30 est destinée à être reliée à une extrémité d'un bracelet, par exemple de type bracelet à maillons.A first slide 30 is slidably mounted along the longitudinal axis of the clasp, by a first end in the first part of the lid 12. By its second end, the first slide 30 is intended to be connected to one end of a bracelet, for example bracelet type links.

La première glissière 30 comprend une première paire de patins 32 reliés entre eux et entre lesquels le premier brin 20 est susceptible de prendre place lorsque le fermoir est en position verrouillée. On notera que, lorsque le fermoir est en position verrouillée, avec le premier brin 20 positionné entre les brancards 102 et entre les patins 32, ces derniers se trouvent disposés en regard des brancards 102. En d'autres termes, les patins 32 et les brancards 102 définissent ensemble et entre eux, un logement dans lequel prend place le premier brin 20 lorsque le fermoir est en position verrouillée.The first slide 30 comprises a first pair of pads 32 interconnected and between which the first strand 20 is likely to take place when the clasp is in the locked position. Note that when the clasp is in the locked position, with the first strand 20 positioned between the shafts 102 and between the pads 32, the latter are arranged opposite the shafts 102. In other words, the pads 32 and the stretchers 102 define together and between them, a housing in which takes place the first strand 20 when the clasp is in the locked position.

A l'instar de la première partie du couvercle 12, la deuxième partie du couvercle 12 est reliée au châssis 10 au moyen d'un deuxième brin 220 articulé avec le châssis 10 par une première de ses extrémités et agencé pour prendre place entre les brancards 102 de la deuxième paire de brancards 102 lorsque le fermoir est en position verrouillée. Le deuxième brin 220 est en outre articulé par une deuxième extrémité avec la deuxième partie du couvercle 12.Like the first portion of the cover 12, the second portion of the cover 12 is connected to the frame 10 by means of a second strand 220 hinged to the frame 10 by a first end and arranged to take place between the stretchers 102 of the second pair of stretchers 102 when the clasp is in the locked position. The second strand 220 is further articulated by a second end with the second part of the cover 12.

Une deuxième glissière est également montée coulissante selon l'axe longitudinal du fermoir, dans la deuxième partie du couvercle 12. Par sa deuxième extrémité, la deuxième glissière 230 est destinée à être montée à l'autre extrémité du bracelet.A second slide is also slidably mounted along the longitudinal axis of the clasp, in the second portion of the cover 12. By its second end, the second slide 230 is intended to be mounted at the other end of the bracelet.

La deuxième glissière 230 comprend une deuxième paire de patins 232, entre lesquels le deuxième brin 220 est susceptible de prendre place lorsque le fermoir est en position verrouillée, lesdits patins de la deuxième paire de patins étant alors disposés en regard des brancards 102 de la deuxième paire de brancards 102.The second slide 230 comprises a second pair of pads 232, between which the second strand 220 is likely to take place when the clasp is in the locked position, said pads of the second pair of pads being then arranged opposite the shafts 102 of the second pair of stretchers 102.

Pour leur coulissement, la première glissière 30, respectivement la deuxième glissière 230, sont dotées d'une paire de plots en saillie 34, 234, s'étendant latéralement, l'un en face de l'autre, c'est-à-dire sur le même axe. Ces plots forment des coulisseaux agencés pour coulisser dans des rainures ménagées à l'intérieur de leur partie de couvercle 12 respectif.For their sliding, the first slideway 30, respectively the second slideway 230, are provided with a pair of projecting studs 34, 234, extending laterally, facing each other, that is to say, say on the same axis. These pads form sliders arranged to slide in grooves formed inside their respective cover portion 12.

De manière avantageuse, les plots 34, 234 sont de formes oblongues et permettent non seulement un mouvement de translation selon l'axe longitudinal, mais également une rotation limitée, selon un axe passant par les plots. En ajustant les dimensions de l'oblong, on peut définir l'angle maximal de rotation de la première glissière 30 et de la deuxième glissière 230, en référence à leur couvercle 12 respectif.Advantageously, the studs 34, 234 are of oblong shapes and allow not only a translational movement along the longitudinal axis, but also a limited rotation along an axis passing through the studs. By adjusting the dimensions of the oblong, one can define the maximum angle of rotation of the first slide 30 and the second slide 230, with reference to their respective cover 12.

Les glissières 30, 230 peuvent être engagées dans leur partie de couvercle 12 respective, simplement en les disposant de manière transversale par rapport au couvercle 12, c'est-à-dire en disposant l'axe passant par les plots 34, 234 de manière à le rapprocher d'une orientation parallèle à l'axe longitudinal du fermoir. On peut ainsi engager les plots dans les rainures et assurer leur engagement en disposant ensuite perpendiculairement l'axe des plots 34, 234 et l'axe longitudinal du fermoir. Il suffit de prévoir une simple butée aux extrémités des rainures, sans même que celles-ci soient amovibles. On obtient ainsi un montage du fermoir particulièrement simple. Une fois relié au bracelet, la tension que celui exerce sur les glissières suffit à les maintenir dans l'axe longitudinal. On pourra noter que dans leur position proximale, définissant la longueur du fermoir la plus courte, les glissières sont, de préférence, entièrement logées dans les couvercles, à l'exception des parties utiles à la liaison avec le bracelet.The slides 30, 230 may be engaged in their respective lid portion 12, simply by arranging them transversely with respect to the lid 12, that is to say by arranging the axis passing through the studs 34, 234 to bring it closer to an orientation parallel to the longitudinal axis of the clasp. It is thus possible to engage the studs in the grooves and ensure their engagement by then placing perpendicularly the axis of the studs 34, 234 and the longitudinal axis of the clasp. Just provide a simple stop at the ends of the grooves, without them being removable. This provides a particularly simple mounting clasp. Once connected to the bracelet, the tension that it exerts on the slides is enough to maintain them in the longitudinal axis. It may be noted that in their proximal position, defining the length of the shortest clasp, the slides are preferably entirely housed in the covers, with the exception of the parts useful for connection with the bracelet.

On peut particulièrement voir les moyens de verrouillage 14 sur la figure 3. Il s'agit ici d'encoche 140, ménagée dans une plaque 142 solidaire de chaque poussoir 18. Les poussoirs 18 sont maintenus en hauteur par un capot 46 et latéralement par des butées, contre lesquelles des ressorts non représentés, les pressent. Les encoches 140 sont agencées pour s'engager avec un pion 160 solidaire du couvercle 12 et formant la structure d'accroche 16. Dans l'exemple, chaque partie du couvercle 12 comprend un pion 160, les deux pions 160 étant juxtaposés lorsque le fermoir est verrouillé. Ils comportent à leur extrémité une rainure 162 avec laquelle peuvent coopérer plus particulièrement les encoches 140. Les pions 160 traversent le capot 46 dans une ouverture 48 que celui-ci comporte pour positionner les rainures 162 au niveau des encoches 140.We can particularly see the locking means 14 on the figure 3 . This is notch 140, formed in a plate 142 integral with each pusher 18. The pushers 18 are held in height by a cap 46 and laterally by stops, against which springs not shown, press them. The notches 140 are arranged to engage with a pin 160 secured to the cover 12 and forming the hook structure 16. In the example, each portion of the cover 12 comprises a pin 160, the two pins 160 being juxtaposed when the clasp is locked. They comprise at their end a groove 162 with which the notches 140 can cooperate more particularly. The pins 160 pass through the cover 46 in an opening 48 that it comprises for positioning the grooves 162 at the notches 140.

Ainsi, en position verrouillée, les encoches 140 sont engagées dans les rainures 162 sous la contrainte des ressorts. Le fermoir est ainsi verrouillé dans cette position. Une pression sur les poussoirs 18 les fait translater et libère la structure d'accroche 16, ce qui permet de déplacer les parties du couvercle 12 relativement au châssis 10, en déployant la boucle.Thus, in the locked position, the notches 140 are engaged in the grooves 162 under the constraint of the springs. The clasp is thus locked in this position. Pressing the push-buttons 18 causes them to translate and releases the attachment structure 16, which makes it possible to move the parts of the cover 12 relative to the frame 10, by unfolding the loop.

Selon un aspect important de l'invention, le fermoir comprend encore une structure de réglage de la position de la première glissière 30 en référence au couvercle 12 selon l'axe longitudinal, permettant d'obtenir un système de mise-à-l'aise. La structure de réglage est formée par un crantage 50 agencé sur les patins 32, associé à un organe d'arrêt 60, solidaire des brancards 102. De préférence, chaque brancard et chaque patin comprend une telle structure de réglage, afin d'avoir une répartition des efforts et des contraintes qui soit symétrique. Il serait également possible de n'avoir qu'une structure de réglage par glissière.According to an important aspect of the invention, the clasp further comprises a structure for adjusting the position of the first slideway 30 with reference to the cover 12 along the longitudinal axis, making it possible to obtain a clutching system. . The adjustment structure is formed by a notch 50 arranged on the pads 32, associated with a stop member 60, integral with the shafts 102. Preferably, each stretcher and each pad comprises such a control structure, in order to have a distribution of forces and constraints that is symmetrical. It would also be possible to have only one slide adjustment structure.

Plus particulièrement, le crantage 50 présente une succession de dents, de préférence triangulaires, présentant un angle sensiblement droit avec la surface des patins. L'organe d'arrêt 60 présente également au moins une dent, le cas échéant, plusieurs, avec laquelle peut coopérer le crantage 50. La dent est avantageusement également triangulaire, présentant un angle sensiblement droit avec la surface des brancards 102.More particularly, the notching 50 has a succession of teeth, preferably triangular, having a substantially right angle with the surface of the pads. The stop member 60 also has at least one tooth, if necessary, several, with which the notch 50 can cooperate. The tooth is advantageously also triangular, having a substantially straight angle with the surface of the shafts 102.

Les surfaces du crantage 50 perpendiculaires au patin et les surfaces de l'organe d'arrêt 60 perpendiculaires au brancard qui lui est associé, sont agencées pour prendre appui l'une contre l'autre et pour ainsi définir une position longitudinale de la première glissière 30. S'il y a plusieurs organes d'arrêt, ils présentent entre eux un intervalle permettant d'y loger au moins une dent du crantage 50, en tout cas, un nombre entier de dents. Le système est fonctionnel avec un organe d'arrêt 60 ayant une seule surface coopérant avec le crantage 50. De manière alternative, l'organe d'arrêt pourrait être en creux au lieu d'être en saillie.The surfaces of the notching 50 perpendicular to the pad and the surfaces of the stop member 60 perpendicular to the stretcher associated therewith, are arranged to bear against each other and thus to define a longitudinal position of the first slide 30. If there are several stop members, they have between them an interval for accommodating there at least one tooth of the notching 50, in any case, a whole number of teeth. The system is functional with a stop member 60 having a single surface cooperating with the notch 50. Alternatively, the stop member could be recessed instead of protruding.

Lorsque le crantage 50 est ainsi engagé en coopération avec l'organe d'arrêt 60, la position de la première glissière 30 selon l'axe longitudinal est bloquée et la translation n'est plus possible. Cet engagement est assuré lorsque le fermoir est en position verrouillée, maintenue par les moyens de verrouillage 14.When the notch 50 is thus engaged in cooperation with the stop member 60, the position of the first slide 30 along the longitudinal axis is blocked and the translation is no longer possible. This commitment is ensured when the clasp is in the locked position, held by the locking means 14.

Grâce à la mobilité de la première glissière 30 en référence à la première partie du couvercle 12 en rotation selon l'axe passant par les ergots, la première glissière 30 peut être manipulée lorsque le fermoir est ouvert, de manière à sortir le crantage 50 de l'organe d'arrêt 60. Lorsque ce dégagement a été opéré, la première glissière 30 peut être déplacée en translation en référence au couvercle 12, afin de modifier la dent du crantage 50 coopérant avec l'organe d'arrêt 60.Thanks to the mobility of the first slide 30 with reference to the first portion of the lid 12 rotated along the axis passing through the lugs, the first slide 30 can be manipulated when the clasp is open, so as to pull the notch 50 of the stop member 60. When this clearance has been made, the first slide 30 can be displaced in translation with reference to the cover 12, in order to modify the notch tooth 50 cooperating with the stop member 60.

De manière similaire, le fermoir comprend encore une structure de réglage de la position de la deuxième glissière 230 en référence à la deuxième partie du couvercle 12, selon l'axe longitudinal. La structure de réglage est formée par un deuxième crantage 250 agencé sur les patins 232 de la deuxième paire de patins, associé à un deuxième organe d'arrêt 260, solidaire des brancards 102 de la deuxième paire de brancards. De préférence, chaque brancard et chaque patin comprend une telle structure de réglage, afin d'avoir une répartition des efforts et des contraintes qui soit symétrique.Similarly, the clasp further comprises a structure for adjusting the position of the second slide 230 with reference to the second portion of the cover 12 along the longitudinal axis. The adjustment structure is formed by a second notch 250 arranged on the pads 232 of the second pair of pads, associated with a second stop member 260 secured to the shafts 102 of the second pair of shafts. Preferably, each stretcher and each pad comprises such an adjustment structure, in order to have a distribution of forces and stresses which is symmetrical.

Les paragraphes précédents à propos de la structure de réglage de la position de la première glissière 30 s'appliquent de manière identique à la structure de réglage de la deuxième glissière 230.The preceding paragraphs about the position adjustment structure of the first slideway 30 apply identically to the adjustment structure of the second slideway 230.

De manière avantageuse, le fermoir comprend encore une première languette élastique 70 intercalée entre la première partie du couvercle 12 et la première glissière 30, ainsi qu'une deuxième languette élastique 270 intercalée entre la deuxième partie couvercle 12 et la deuxième glissière 230.Advantageously, the clasp further comprises a first elastic tongue 70 interposed between the first portion of the cover 12 and the first slide 30, and a second elastic tongue 270 interposed between the second cover portion 12 and the second slide 230.

Dans le mode de réalisation proposé, les languettes 70, 270 forment un U, dont une première branche 72, 272, plus courte, permet la fixation de la languette sur la partie du couvercle 12. La deuxième branche 72, 274 du U exerce une pression élastique contre la première glissière 30, respectivement la deuxième glissière 230, tendant à les presser en direction de leur paire de brancards 102 respective.In the proposed embodiment, the tabs 70, 270 form a U, a first branch 72, 272, shorter, allows the attachment of the tongue on the portion of the cover 12. The second branch 72, 274 of the U exerts a elastic pressure against the first slide 30, respectively the second slide 230, tending to press them towards their respective pairs of shafts 102.

Chaque languette élastique est agencée de manière à maintenir le crantage 50 engagé contre l'organe d'arrêt 60, jusqu'à la mise en rotation maximale de la première/deuxième glissière 230, par rapport à son axe de rotation passant par les plots. Les languettes élastiques 70, 270 permettent ainsi de maintenir l'engagement du crantage 50, 250 dans l'organe d'arrêt 60, 260, lorsque le réglage de la longueur a été effectué et que le fermoir est en train d'être replié, mais qu'il n'a pas encore été verrouillé. Les languettes permettent également de maintenir l'engagement lorsque le bracelet, au porté, exerce des contraintes sur la première 30/deuxième glissière 230, qui pourraient risquer de désengager le crantage 50, 250 de l'organe d'arrêt 60, 260.Each elastic tongue is arranged so as to maintain the engagement 50 engaged against the stop member 60, until the maximum rotational setting of the first / second slide 230, with respect to its axis of rotation passing through the pads. The elastic tongues 70, 270 thus make it possible to maintain the engagement of the catch 50, 250 in the stop member 60, 260, when the adjustment of the length has been carried out and the clasp is being folded, but it has not been locked yet. The tongues also make it possible to maintain the engagement when the bracelet, worn, exerts stresses on the first 30 / second slide 230, which could risk disengaging the notch 50, 250 of the stop member 60, 260.

Ainsi, à partir d'une position de départ, un utilisateur voulant modifier la longueur utile de son fermoir va ouvrir ce dernier en actionnant les moyens de verrouillage 14, au moyen des poussoirs 18. Une fois le fermoir ouvert (fig. 4a), il pourra mettre en rotation les glissières 30, 230 autour de leur axe défini par les plots 34, 234, pour dégager les crantages 50, 250 des structures d'arrêt 60, 260 et ainsi pouvoir déplacer l'une et/ou l'autre des glissières 30, 230. Lorsque le réglage est effectué (fig. 4b), les languettes élastiques 70, 270 pressent déjà le crantage 50, 250 des glissières 30, 230 contre leur organe d'arrêt 60, 260 respectif. Le verrouillage du fermoir permet ensuite de sécuriser le réglage (fig. 4c).Thus, from a starting position, a user wanting to modify the useful length of his clasp will open the latter by actuating the locking means 14, by means of the pushers 18. Once the clasp is open ( Fig. 4a ), it can rotate the slides 30, 230 about their axis defined by the pads 34, 234, to clear the notches 50, 250 of the stop structures 60, 260 and thus be able to move the one and / or the 30. 230. When the adjustment is made ( Fig. 4b ), the resilient tongues 70, 270 already press the notch 50, 250 of the slides 30, 230 against their stop member 60, 260 respectively. Locking the clasp then makes it possible to secure the setting ( Fig. 4c ).

De manière particulièrement avantageuse, lorsque le fermoir est ouvert, les languettes élastiques 70, 270 permettent de conserver la position de réglage, en dehors d'une action manuelle exercée à l'encontre des languettes élastiques. On évite ainsi de devoir régler le fermoir à chaque ouverture.Particularly advantageously, when the clasp is open, the elastic tabs 70, 270 allow to maintain the adjustment position, apart from a manual action exerted against the elastic tongues. This avoids having to adjust the clasp at each opening.

On notera, comme on peut le voir notamment sur la figure 3, qu'un système de rallonge de type à lame déployante 80, connu sous le nom de Flip-Lock, peut être intercalé entre les glissières et le bracelet. Les lames de la rallonge peuvent prendre place entre les patins de leur glissière respective, ou se déployer pour fournir un bracelet de longueur supplémentaire, par exemple pour disposer la montre par-dessus une combinaison de plongée.It will be noted, as can be seen in particular on the figure 3 that a folding blade type extension system 80, known as Flip-Lock, can be interposed between the slides and the bracelet. The blades of the extender can take place between the pads of their respective slide, or expand to provide a bracelet of additional length, for example to arrange the watch over a wetsuit.

Bien que la description ci-dessus a été donnée en référence à un fermoir comprenant un couvercle en deux parties, chacune étant associée à une glissière disposant d'un système de réglage de sa position, l'homme du métier pourra aisément adapter cette description pour proposer un fermoir n'ayant qu'une glissière, sans sortir du cadre de l'invention délimité par les revendications.Although the above description has been given with reference to a clasp comprising a lid in two parts, each being associated with a slide having a system for adjusting its position, the man of the profession can easily adapt this description to provide a clasp having a slide, without departing from the scope of the invention defined by the claims.

Claims (10)

  1. Watch strap clasp, comprising:
    - a frame (10) provided with a base (100) and at least a first pair of shafts (102) extending parallel to one another from the base (100) in the same plane; and
    - a first cover (12) which is connected to the frame (10) by means of a first blade (20) articulated to the frame (10) at a first one of its ends, and arranged to be placed between the shafts (102) when the clasp is in the locked position, the said first blade (20) also being articulated at a second end on the first cover (12),
    the said cover (12) also comprising locking means (14), arranged to cooperate with a coupling structure (16) which is integral with the frame (10), and is controlled by push buttons (18) in order to move between a coupling position, in which the coupling structure (16) can cooperate with the locking means (14) in order to lock the clasp, and a free position, in which the coupling structure (16) leaves the locking means (14) free;
    - a first slide (30), a first end of which is fitted so as to slide in the first cover (12) along the longitudinal axis of the clasp, and a second end of which is arranged to be connected to a strap, the said slide comprising a first pair of runners (32), between which the first blade (20) can be placed when the clasp is in the locked position, the said runners then being disposed facing the shafts (102),
    characterized in that it comprises a structure for adjustment of the position of the first slide (30) relative to the cover (12) along the longitudinal axis, the said adjustment structure being formed by a serration (50) which is arranged on the said runners, and by a stop element (60) which is integral with the shafts (102), the serration (50) and the stop element (60) being arranged to cooperate with one another and to block the translation of the first slide (30) when the clasp is in the locked position.
  2. Clasp according to Claim 1, characterized in that it comprises a second pair of shafts (102) extending parallel to one another from the base (100) in the same plane, symmetrically with respect to the first pair of shafts (102),
    and in that it comprises a second cover (12) which is connected to the frame (10) by means of a second blade (220) articulated to the frame (10) at a first one of its ends, and arranged to be placed between the shafts (102) of the second pair of shafts (102) when the clasp is in the locked position, the said second blade also being articulated at a second end to the second cover (12),
    the said second cover (12) also comprising second locking means (14), arranged to cooperate with the said coupling structure (16) which is controlled by the said push buttons (18) in order to move between the said coupling position, in which the coupling structure (16) can cooperate with the second locking means (14) in order to lock the clasp, and a free position, in which the coupling structure (16) leaves the second locking means (14) free;
    characterized in that it comprises a second slide (230), which is fitted so as to slide in the said second cover (12) along the longitudinal axis of the clasp, the said second slide (230) comprising a second pair of runners (232), between which the second blade (220) can be placed when the clasp is in the locked position, the said runners of the second pair of runners then being disposed facing the shafts (102) of the second pair of shafts (102),
    and in that it comprises a structure for adjustment of the position of the second slide (230) relative to the second cover (12) along the longitudinal axis, the said adjustment structure being formed by a second serration (250) which is arranged on the said runners of the second pair of runners (232), and by a second stop element (260) which is integral with the shafts (102) of the second pair of shafts (102), the second serration (250) and the second stop element (260) being arranged to cooperate with one another and to block the translation of the second slide (230) when the clasp is in the locked position.
  3. Clasp according to one of Claims 1 and 2, characterized in that each runner comprises a serration (50, 250), and in that each shaft comprises a stop element (60, 260) in order to cooperate with an associated serration (50, 250).
  4. Clasp according to one of the preceding claims, characterized in that each serration (50, 250) and each stop element (60, 260) which is associated therewith are respectively situated on a face of the runner and on a face of the shaft, the said faces being parallel to the articulation between the frame (10) and the first blade (20), and respectively between the frame (10) and the second blade (220), when the clasp is dependent on Claim 2.
  5. Clasp according to one of the preceding claims, characterized in that the serration (50, 250) and the stop element (60, 260) which is associated therewith have complementary forms.
  6. Clasp according to one of the preceding claims, characterized in that it comprises a first resilient tongue (70) which is interposed between the first cover (12) and the first slide (30), the said resilient tongue being arranged so as to exert on the first slide (30) a force which tends to press it against the first pair of shafts (102), and to retain the serration (50) engaged against the stop element (60).
  7. Clasp according to Claim 6 and according to Claim 2, characterized in that it comprises a second resilient tongue (270) which is interposed between the second cover (12) and the second slide (230), the said second resilient tongue being arranged so as to exert on the second slide (230) a force which tends to press it against the second pair of shafts (102), and to retain the second serration (250) engaged against the second stop element (260).
  8. Clasp according to one of Claims 2 to 7, characterized in that the first (30) and second (230) slides each comprise a pair of studs (34, 234) which are disposed laterally and project along an axis perpendicular to the longitudinal axis, the said pair of studs cooperating with grooves provided respectively in the first and second covers (12) along the longitudinal axis, in order to permit the sliding of the first (30) and the second (230) slides.
  9. Clasp according to Claim 8, characterized in that the said studs (34, 234) are oblong and have dimensions so as to permit limited rotation of the first and second slides (30, 230) respectively relative to the first and second covers (12), around the axis which passes through the studs.
  10. Method for adjustment of a clasp according to one of the preceding claims, comprising the steps of:
    - unlocking the clasp and opening at least the first cover (12);
    - pivoting the first slide (30) relative to the first cover, in order to release the serration (50) from the stop structure (60);
    - displacing the first slide (30) in translation relative to the first cover (12);
    - closing the first cover (12) on the frame (10) and locking the clasp.
EP17189715.0A 2016-09-12 2017-09-06 Watch strap clasp Active EP3292784B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH01179/16A CH712900A2 (en) 2016-09-12 2016-09-12 Watch strap clasp comprising an adjustment structure and method of adjusting such a clasp.

Publications (2)

Publication Number Publication Date
EP3292784A1 EP3292784A1 (en) 2018-03-14
EP3292784B1 true EP3292784B1 (en) 2019-07-03

Family

ID=59811134

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17189715.0A Active EP3292784B1 (en) 2016-09-12 2017-09-06 Watch strap clasp

Country Status (2)

Country Link
EP (1) EP3292784B1 (en)
CH (1) CH712900A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022513770A (en) * 2018-12-10 2022-02-09 パテック フィリップ ソシエテ アノニム ジュネーブ A bracelet with a device for fine-tuning the length of the bracelet and at least one such device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1910739A (en) * 1932-04-06 1933-05-23 Harold E Sweet Extension device
CH698981B8 (en) 2005-12-21 2010-06-15 Taramax S A Length adjustment device for a bracelet, bracelet clasp and bracelet provided with such a device.
DE06405427T1 (en) 2006-10-06 2008-10-09 Rolex Sa strap closure
CH701806B1 (en) * 2009-09-02 2014-10-31 Promotion Spa Clasp with a sliding system.
CH704197A2 (en) * 2010-12-10 2012-06-15 Damien Blanc Clasp for e.g. watch strap, has fixing unit for fixing position of sliding part to variable position in structure, and control unit formed of cover, toothed wheels, axles, ratchet wheel and rack and allowing movement of sliding part

Also Published As

Publication number Publication date
EP3292784A1 (en) 2018-03-14
CH712900A2 (en) 2018-03-15

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