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EP3769640A1 - Watch strap clasp - Google Patents

Watch strap clasp Download PDF

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Publication number
EP3769640A1
EP3769640A1 EP19188669.6A EP19188669A EP3769640A1 EP 3769640 A1 EP3769640 A1 EP 3769640A1 EP 19188669 A EP19188669 A EP 19188669A EP 3769640 A1 EP3769640 A1 EP 3769640A1
Authority
EP
European Patent Office
Prior art keywords
clasp
cover
link
lever
hook
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19188669.6A
Other languages
German (de)
French (fr)
Other versions
EP3769640B1 (en
Inventor
Philippe SCHALLER
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.)
Omega SA
Original Assignee
Omega SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Omega SA filed Critical Omega SA
Priority to EP19188669.6A priority Critical patent/EP3769640B1/en
Priority to CH01058/19A priority patent/CH716442A2/en
Priority to US15/930,492 priority patent/US11284684B2/en
Priority to JP2020087876A priority patent/JP6980838B2/en
Priority to KR1020200075002A priority patent/KR102360737B1/en
Priority to CN202010659632.4A priority patent/CN112293888B/en
Publication of EP3769640A1 publication Critical patent/EP3769640A1/en
Application granted granted Critical
Publication of EP3769640B1 publication Critical patent/EP3769640B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
    • A44C5/18—Fasteners for straps, chains or the like
    • A44C5/22—Fasteners for straps, chains or the like for closed straps
    • A44C5/24—Fasteners for straps, chains or the like for closed straps with folding devices
    • A44C5/246—Fasteners for straps, chains or the like for closed straps with folding devices having size adjusting means
    • 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
    • A44C5/02—Link constructions

Definitions

  • the present invention relates to a clasp for a bracelet. More precisely, the present invention relates to a clasp for a watch strap comprising means which allow fine adjustment of the length of the strap.
  • Clasps comprising means for fine adjustment of the length of the strap of a watch are already known from the state of the art.
  • clasp for fine adjustment of the length of a bracelet we mean clasps which make it possible to adjust the length of a bracelet over a short stroke in order to allow this length to be adapted as accurately as possible for optimal comfort when wearing the bracelet. watch.
  • Such clasps usually include a connecting link via which one of the strands of the bracelet is connected to the cover of the clasp. This terminal link is able to slide in a longitudinal direction of the clasp between a first retracted position in which it is received in the cover of the clasp and a second extended position in which it is released from the clasp. Therefore, the length available for fine adjustment is determined by the stroke of the end link between its first and second positions.
  • the terminal link For indexing the position of the terminal link, the terminal link cooperates via a toothed element with a groove.
  • the rack may be integral with the cover of the clasp and the toothed element may be carried by the terminal link.
  • the permutation of the bleeding and of the toothed element is also possible. We know for example from the patent EP 2,765,883 a clasp of this type.
  • the end link When the toothed element is engaged with the groove, the end link is immobilized. To disengage the toothed element from its socket with the bleeding, elastic uncoupling means are provided.
  • the force of the toothing between the toothed member and the toothed rack is relatively small, so that the position of the end link can be easily changed, for example by pulling or pushing the end link.
  • the handling of such a system does not allow simple, rapid and precise adjustment for the wearer of the watch.
  • the object of the present invention is to remedy the drawbacks mentioned above as well as others still by providing a clasp for fine adjustment of the length of a watch strap making it possible, on the one hand, to retain the adjustment of the watch strap. strap length without the risk of inadvertently losing it, and secondly by providing particularly simple and quick handling and adjustment.
  • the present invention relates to a clasp for a watch strap comprising a cover connected on a first side to a first bracelet strand and on a second side to a second bracelet strand, connecting means being interposed between the second bracelet strand and the clasp cover, these connecting means comprising a connecting link sliding in a longitudinal direction of the clasp between a first position in which the connecting link is engaged in the cover of the clasp, and a second position in which the link is at least partially released from the cover of the clasp, characterized in that the clasp comprises at least a first and a second bar mounted in the cover, and in that the connecting link comprises a lever provided with at least one hook arranged to pass from a first position in which the at least one hook is engaged with at least one first bar integral with the cover of the clasp, towards a u at least a second position in which the at least one hook is released from its engagement with said first bar and said link is free to slide so as to engage said second bar with at least one hook.
  • the invention also relates to a wristwatch equipped with a clasp according to the invention.
  • the figure 1 is an exploded perspective view of the clasp according to the invention while the figure 2 is a perspective view of the same clasp in the assembled state.
  • the clasp 1 according to the invention comprises a cover 2 connected on a first side to a first bracelet strand (not shown) with the interposition of a buckle closure system folding clasp 6 and means for locking the clasp, the structures of which are known and which will therefore not be described further here.
  • the folding clasp closure system 6 can be omitted and that the cover 2 can be connected to the first strap strand directly.
  • the cover 2 is connected on a second side to a second strap strand (not shown) with a connecting link 10 to perform fine adjustment of the length of the watch strap.
  • the bracelet strands can be formed by a succession of links or else by a strand of leather, textile or else elastomer material.
  • the cover 2 has a general U-shaped section and is provided with two wings 12 facing each other, these wings 12 each carrying on their face directed inwardly a groove 14. Moreover, a cavity 16 is formed in the bottom of cover 2 and defines two end stops 18, the role of which will be described in detail later. Finally, the connecting link 10 comprises lateral guide rails 20 in order to be guided in sliding manner in the cover 2 between the bottom of the cover 2 and the wings 12.
  • the connecting link 10 is capable of sliding in a longitudinal direction of the clasp 1 between a first position ( figure 3 ) in which the connecting link 10 is engaged in the cover 2 of the clasp 1, and a second position ( figure 4 ) in which the connecting link 10 is at least partially disengaged from the cover 2 of the clasp 1.
  • the length available for adjusting the bracelet is determined by the travel of the connecting link 10 between its first and second positions.
  • the clasp 1 also comprises at least two bars 21, 22 spaced apart from one another and mounted in the cover 2 across the width of the clasp, each end of the bars being arranged to rest in a blind hole 13 machined in the wings 12 of the cover 2, the two bars defining the first and second positions of the link 10.
  • the bars 21, 22 are provided removable or fixed and are arranged to cooperate with at least one hook 32, 32 'so as to lock the connecting link 10 in the first or the second position. If necessary, those skilled in the art will not have any particular difficulty in adding a third bar and a third hook, for example.
  • the connecting link 10 comprises two ends 15 spaced from one another, between which one end of a link or of a strand of the second bracelet strand is nested.
  • the assembly is ensured by a bar 16 freely passing through the ends 15 and the link / strand of the second bracelet strand, the bar being held by two end screws 17 being housed in whole or in part in the connecting link 10.
  • the connecting link 10 also comprises a lever 3 having a first portion 30 provided with at least two hooks 32, 32 'each hook 32,32' being formed in the first portion of the lever 3 by machining in the width direction. of the clasp 1, each hook having dimensions similar to, but slightly greater than, those of the bars 21, 22.
  • a single hook can also be envisaged, the length of the latter then corresponding to the distance between the first and the last bar, the disadvantage being that the positioning of the hook on the chosen bar is less precise.
  • the width of the first potion of the lever is provided slightly less than the width of the cover 2.
  • the lever 3 also has a second portion 31, narrower than the first portion 30, acting as a pusher and at the base of which is provided a through hole 33 of circular section defining an axis of rotation in order to be able to pivot the lever 3 with respect to the connecting link 10.
  • the assembly of the lever 3 to the link connection 10 is provided by a pin 19 passing through the connecting link 10 and the through hole 33.
  • the second portion 31 of the lever 3 is slightly oriented upward with respect to the link so as to form a positive slope and increase l leverage when the bearer press in a direction perpendicular to the clasp on this second portion forming the pusher 30.
  • the lever 3 is arranged to move from a first position in which at least one hook 32, 32 'is engaged with at least one first bar 21, 22 integral with the cover 2, to at least a second position in which the hook is freed from his engagement with the bars.
  • the connecting link 10 comprises a blind housing 11 of substantially parallelepiped shape, in which is disposed a torsion spring 4, this spring 4 being capped by the end of the second portion 31 of the lever 3.
  • a torsion spring 4 which is mounted compressed forces the lever in the direction of the bars 21, 22, so that the hooks 32, 32 'are engaged with the bars.
  • the end of the second portion 31 forming the pusher along arrow A is pressed against the elastic return force of the spring 4
  • torsion spring 4 By a leaf spring, this leaf spring having a V-shaped profile. It is fixed in its center by means of a screw in the bottom of the link. link 10 and the lever 3 bears resiliently on the leaf spring. The degree of deflection of the leaf spring determines the stroke of the lever and therefore of the hooks 32. As a result, the hooks 32 are perfectly notched on the bars 21, 22 so that it is impossible to accidentally lose the setting of the connecting link. 10.
  • the user first unfolds the clasp 1 in order to be able to access the lever. Then, the user presses on the portion of the lever forming the pusher so as to release the hook (s) 32, 32 'from the bar (s) 21, 22, thus the connecting link 10 is free to slide and the carrier can push the latter or pull on it to choose the appropriate strap length. Finally, once the length has been chosen, the wearer releases the pusher which returns to its rest position under the effect of the spring 4, and at least one of the hooks 32, 32 'engages at least one bar to lock the position. The wearer only has to close the clasp 1 to wear the watch.
  • the clasp according to the invention can also be used for a clothing belt.
  • a first end of the belt is connected directly to the cover 2 of the clasp, while the second end of the belt is connected to the cover 2 of the clasp with the interposition of the connecting means according to the invention which comprise the connecting link 10.

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  • Buckles (AREA)

Abstract

Fermoir pour bracelet de montre comprenant un couvercle relié d'un premier côté à un premier brin de bracelet et d'un second côté à un second brin de bracelet, des moyens de liaison étant interposés entre le second brin de bracelet et le couvercle du fermoir, ces moyens de liaison comprenant un maillon de liaison coulissant suivant une direction longitudinale du fermoir entre une première position et une seconde position. Selon l'invention, le fermoir comprend au moins une première et une deuxième barrettes montées dans le couvercle, et le maillon de liaison comprend un levier muni d'un crochet pouvant passer d'une première position dans laquelle le crochet est en prise avec une première barrette solidaire du couvercle du fermoir, vers une deuxième position dans laquelle le crochet est libéré de son engagement avec la première barrette et ledit maillon est libre de coulisser de manière à engager avec un crochet ladite deuxième barrette.

Figure imgaf001
Clasp for a watch strap comprising a cover connected on a first side to a first bracelet strand and on a second side to a second bracelet strand, connecting means being interposed between the second bracelet strand and the cover of the clasp , these connecting means comprising a connecting link sliding in a longitudinal direction of the clasp between a first position and a second position. According to the invention, the clasp comprises at least a first and a second bar mounted in the cover, and the connecting link comprises a lever provided with a hook which can move from a first position in which the hook is engaged with a first bar integral with the cover of the clasp, to a second position in which the hook is released from its engagement with the first bar and said link is free to slide so as to engage said second bar with a hook.
Figure imgaf001

Description

Domaine de l'inventionField of the invention

La présente invention concerne un fermoir pour bracelet. Plus précisément, la présente invention concerne un fermoir pour bracelet de montre comprenant des moyens qui permettent un réglage fin de la longueur du bracelet.The present invention relates to a clasp for a bracelet. More precisely, the present invention relates to a clasp for a watch strap comprising means which allow fine adjustment of the length of the strap.

Arrière-plan de l'inventionBackground of the invention

Des fermoirs comprenant des moyens pour un réglage fin de la longueur du bracelet d'une montre sont déjà connus de l'état de la technique. Par fermoir pour réglage fin de la longueur d'un bracelet, on entend des fermoirs qui permettent de régler sur une faible course la longueur d'un bracelet afin de permettre d'adapter au plus juste cette longueur pour un confort optimal au porter de la montre. De tels fermoirs comprennent usuellement un maillon de liaison par l'intermédiaire duquel l'un des brins du bracelet est relié au couvercle du fermoir. Ce maillon terminal est apte à coulisser selon une direction longitudinale du fermoir entre une première position rétractée dans laquelle il vient se loger dans le couvercle du fermoir et une seconde position sortie dans laquelle il est dégagé du fermoir. Par conséquent, la longueur disponible pour le réglage fin est déterminée par la course du maillon terminal entre ses premières et seconde positions. Pour l'indexation de la position du maillon terminal, le maillon terminal coopère via un élément denté avec une saignée. A titre d'exemple, la crémaillère peut être solidaire du couvercle du fermoir et l'élément denté être porté par le maillon terminal. La permutation de la saignée et de l'élément denté est également envisageable. On connait par exemple du brevet EP 2 765 883 un fermoir de ce type.Clasps comprising means for fine adjustment of the length of the strap of a watch are already known from the state of the art. By clasp for fine adjustment of the length of a bracelet, we mean clasps which make it possible to adjust the length of a bracelet over a short stroke in order to allow this length to be adapted as accurately as possible for optimal comfort when wearing the bracelet. watch. Such clasps usually include a connecting link via which one of the strands of the bracelet is connected to the cover of the clasp. This terminal link is able to slide in a longitudinal direction of the clasp between a first retracted position in which it is received in the cover of the clasp and a second extended position in which it is released from the clasp. Therefore, the length available for fine adjustment is determined by the stroke of the end link between its first and second positions. For indexing the position of the terminal link, the terminal link cooperates via a toothed element with a groove. By way of example, the rack may be integral with the cover of the clasp and the toothed element may be carried by the terminal link. The permutation of the bleeding and of the toothed element is also possible. We know for example from the patent EP 2,765,883 a clasp of this type.

Lorsque l'élément denté est en prise avec la saignée, le maillon terminal est immobilisé. Pour désengager l'élément denté de sa prise avec la saignée, on prévoit des moyens élastiques de désaccouplement. La force du crantage entre l'élément denté et la denture à crémaillère est relativement faible, de sorte que la position du maillon terminal peut être facilement modifiée, par exemple en tirant ou en poussant le maillon terminal. De plus, la manipulation d'un tel système ne permet pas un réglage simple, rapide et précis pour le porteur de la montre.When the toothed element is engaged with the groove, the end link is immobilized. To disengage the toothed element from its socket with the bleeding, elastic uncoupling means are provided. The force of the toothing between the toothed member and the toothed rack is relatively small, so that the position of the end link can be easily changed, for example by pulling or pushing the end link. In addition, the handling of such a system does not allow simple, rapid and precise adjustment for the wearer of the watch.

Résumé de l'inventionSummary of the invention

La présente invention a pour but de remédier aux inconvénients mentionnés ci-dessus ainsi qu'à d'autres encore en procurant un fermoir pour le réglage fin de la longueur d'un bracelet de montre permettant d'une part de conserver le réglage de la longueur du bracelet sans risque de le perdre par inadvertance, et d'autre part en procurant une manipulation et un réglage particulièrement simple et rapide.The object of the present invention is to remedy the drawbacks mentioned above as well as others still by providing a clasp for fine adjustment of the length of a watch strap making it possible, on the one hand, to retain the adjustment of the watch strap. strap length without the risk of inadvertently losing it, and secondly by providing particularly simple and quick handling and adjustment.

A cet effet, la présente invention concerne un fermoir pour bracelet de montre comprenant un couvercle relié d'un premier côté à un premier brin de bracelet et d'un second côté à un second brin de bracelet, des moyens de liaison étant interposés entre le second brin de bracelet et le couvercle du fermoir, ces moyens de liaison comprenant un maillon de liaison coulissant suivant une direction longitudinale du fermoir entre une première position dans laquelle le maillon de liaison est engagé dans le couvercle du fermoir, et une seconde position dans laquelle le maillon est au moins partiellement dégagé du couvercle du fermoir, caractérisé en ce que le fermoir comprend au moins une première et une deuxième barrettes montées dans le couvercle, et en ce que le maillon de liaison comprend un levier muni d'au moins un crochet agencé pour passer d'une première position dans laquelle l'au moins un crochet est en prise avec au moins une première barrette solidaire du couvercle du fermoir, vers au moins une deuxième position dans laquelle l'au moins un crochet est libéré de son engagement avec ladite première barrette et ledit maillon est libre de coulisser de manière à engager avec au moins un crochet ladite deuxième barrette.To this end, the present invention relates to a clasp for a watch strap comprising a cover connected on a first side to a first bracelet strand and on a second side to a second bracelet strand, connecting means being interposed between the second bracelet strand and the clasp cover, these connecting means comprising a connecting link sliding in a longitudinal direction of the clasp between a first position in which the connecting link is engaged in the cover of the clasp, and a second position in which the link is at least partially released from the cover of the clasp, characterized in that the clasp comprises at least a first and a second bar mounted in the cover, and in that the connecting link comprises a lever provided with at least one hook arranged to pass from a first position in which the at least one hook is engaged with at least one first bar integral with the cover of the clasp, towards a u at least a second position in which the at least one hook is released from its engagement with said first bar and said link is free to slide so as to engage said second bar with at least one hook.

Conformément à d'autres variantes avantageuses de l'invention :

  • le levier est agencé pour pivoter par rapport au maillon lors du passage de la première position à ladite au moins deuxième position ;
  • le levier est maintenu en première position au moyen d'un ressort logé dans le maillon de liaison ;
  • ledit au moins un crochet et ledit levier forment un élément d'un seul tenant ;
  • le couvercle comprend au moins une troisième barrette définissant une troisième position ;
  • le maillon de liaison est équipé d'un moyen d'arrêtage empêchant l'extraction du maillon de liaison du couvercle de fermoir ;
  • le moyen d'arrêtage est constitué par une vis qui fait saillie dans une rainure ménagée dans le fond du couvercle et qui définit deux butées d'extrémité ;
  • le couvercle présente une section générale en forme de U et est muni de deux ailes se faisant face, ces ailes portant chacune sur leur face dirigée vers l'intérieur une saignée ;
  • le maillon terminal comprend des surfaces de guidage latérales afin d'être guidé à coulissement dans le couvercle entre le fond du couvercle et les ailes ;
  • le levier comprend deux crochets ;
  • le maillon de liaison comprend un logement pour recevoir ledit ressort, ledit ressort étant en appui au moins contre le fond dudit logement et ledit levier.
In accordance with other advantageous variants of the invention:
  • the lever is arranged to pivot relative to the link during the passage from the first position to said at least second position;
  • the lever is held in the first position by means of a spring housed in the connecting link;
  • said at least one hook and said lever form an integral element;
  • the cover comprises at least a third bar defining a third position;
  • the connecting link is equipped with a stop means preventing the extraction of the connecting link from the clasp cover;
  • the stopping means consists of a screw which projects into a groove formed in the bottom of the cover and which defines two end stops;
  • the cover has a general U-shaped section and is provided with two wings facing each other, these wings each carrying a groove on their face directed inwards;
  • the terminal link comprises lateral guide surfaces in order to be guided to slide in the cover between the bottom of the cover and the wings;
  • the lever has two hooks;
  • the connecting link comprises a housing for receiving said spring, said spring being supported at least against the bottom of said housing and said lever.

L'invention concerne également une montre bracelet équipée d'un fermoir conforme à l'invention.The invention also relates to a wristwatch equipped with a clasp according to the invention.

Description sommaire des dessinsBrief description of the drawings

D'autres caractéristiques et avantages de la présente invention ressortiront plus clairement de la description détaillée qui suit d'un mode de réalisation du fermoir pour bracelet de montre ou pour ceinture selon l'invention, cet exemple étant donné à titre purement illustratif et non limitatif seulement en liaison avec le dessin annexé sur lequel:

  • la figure 1 est une vue éclatée en perspective du fermoir selon l'invention ;
  • la figure 2 est une vue en perspective du fermoir de la figure 1 à l'état assemblé ;
  • la figure 3 est une vue en coupe transversale du fermoir selon l'invention, le maillon de réglage étant en position engagée ;
  • la figure 4 est une vue en coupe transversale du fermoir selon l'invention, maillon de réglage fin étant en position dégagée ;
  • la figure 5 est une vue détaillée en perspective du maillon de réglage du fermoir selon l'invention ;
  • la figure 6 est une vue de dessous en perspective du fermoir selon l'invention.
Other characteristics and advantages of the present invention will emerge more clearly from the detailed description which follows of an embodiment of the clasp for a watch strap or for a belt according to the invention, this example being given purely by way of illustration and without limitation. only in conjunction with the attached drawing in which:
  • the figure 1 is an exploded perspective view of the clasp according to the invention;
  • the figure 2 is a perspective view of the clasp of the figure 1 in the assembled state;
  • the figure 3 is a cross-sectional view of the clasp according to the invention, the adjusting link being in the engaged position;
  • the figure 4 is a cross-sectional view of the clasp according to the invention, the fine adjustment link being in the released position;
  • the figure 5 is a detailed perspective view of the adjustment link of the clasp according to the invention;
  • the figure 6 is a bottom perspective view of the clasp according to the invention.

Description détaillée des modes de réalisation préférésDetailed description of the preferred embodiments

L'invention va à présent être décrite en liaison avec un bracelet de montre. Il va cependant de soi que cet exemple est donné à titre purement illustratif et non limitatif et que le fermoir selon l'invention peut également être utilisé pour une boucle de ceinture par exemple.The invention will now be described in connection with a watch strap. It goes without saying, however, that this example is given purely by way of illustration and is not limiting and that the clasp according to the invention can also be used for a belt buckle, for example.

La figure 1 est une vue en perspective éclatée du fermoir selon l'invention tandis que la figure 2 est une vue en perspective de ce même fermoir à l'état assemblé. Le fermoir 1 selon l'invention comprend un couvercle 2 relié d'un premier côté à un premier brin de bracelet (non représenté) avec interposition d'un système de fermeture à boucle déployante 6 et de moyens de verrouillage du fermoir dont les structures sont connues et qui ne seront donc pas décrites davantage ici. On notera que le système de fermeture à boucle déployante 6 peut être omis et que le couvercle 2 peut être relié au premier brin de bracelet directement. Le couvercle 2 est relié d'un second côté à un second brin de bracelet (non représenté) avec un maillon de liaison 10 pour effectuer un réglage fin de la longueur du bracelet de la montre. Les brins de bracelet peuvent être formés par une succession de maillons ou bien par un brin en cuir, en textile ou encore en matière élastomère.The figure 1 is an exploded perspective view of the clasp according to the invention while the figure 2 is a perspective view of the same clasp in the assembled state. The clasp 1 according to the invention comprises a cover 2 connected on a first side to a first bracelet strand (not shown) with the interposition of a buckle closure system folding clasp 6 and means for locking the clasp, the structures of which are known and which will therefore not be described further here. It will be noted that the folding clasp closure system 6 can be omitted and that the cover 2 can be connected to the first strap strand directly. The cover 2 is connected on a second side to a second strap strand (not shown) with a connecting link 10 to perform fine adjustment of the length of the watch strap. The bracelet strands can be formed by a succession of links or else by a strand of leather, textile or else elastomer material.

Comme on peut l'observer à la figure 1, le couvercle 2 présente une section générale en forme de U et est muni de deux ailes 12 se faisant face, ces ailes 12 portant chacune sur leur face dirigée vers l'intérieur une rainure 14. Par ailleurs, une cavité 16 est ménagée dans le fond du couvercle 2 et définit deux butées d'extrémité 18 dont le rôle sera décrit en détail ultérieurement. Enfin, le maillon de liaison 10 comprend des rails de guidage latéraux 20 afin d'être guidé en coulissement dans le couvercle 2 entre le fond du couvercle 2 et les ailes 12. On remarquera sur les figures 3 et 4 que le maillon de liaison 10 est capable de coulisser suivant une direction longitudinale du fermoir 1 entre une première position (figure 3) dans laquelle le maillon de liaison 10 est engagé dans le couvercle 2 du fermoir 1, et une seconde position (figure 4) dans laquelle le maillon de liaison 10 est au moins partiellement dégagé du couvercle 2 du fermoir 1. La longueur disponible pour le réglage du bracelet est déterminée par la course du maillon de liaison 10 entre ses première et seconde positions.As can be seen from figure 1 , the cover 2 has a general U-shaped section and is provided with two wings 12 facing each other, these wings 12 each carrying on their face directed inwardly a groove 14. Moreover, a cavity 16 is formed in the bottom of cover 2 and defines two end stops 18, the role of which will be described in detail later. Finally, the connecting link 10 comprises lateral guide rails 20 in order to be guided in sliding manner in the cover 2 between the bottom of the cover 2 and the wings 12. It will be noted on the figures 3 and 4 that the connecting link 10 is capable of sliding in a longitudinal direction of the clasp 1 between a first position ( figure 3 ) in which the connecting link 10 is engaged in the cover 2 of the clasp 1, and a second position ( figure 4 ) in which the connecting link 10 is at least partially disengaged from the cover 2 of the clasp 1. The length available for adjusting the bracelet is determined by the travel of the connecting link 10 between its first and second positions.

Le fermoir 1 comprend également au moins deux barrettes 21 ,22 espacées entre elles et montées dans le couvercle 2 dans le sens de la largeur du fermoir, chaque extrémité des barrettes étant agencée pour reposer dans un orifice borgne 13 usiné dans les ailes 12 du couvercle 2, les deux barrettes définissant les premières et deuxième positions du maillon 10. Les barrettes 21, 22 sont prévues démontables ou fixe et sont agencées pour coopérer avec au moins un crochets 32, 32' de manière à verrouiller le maillon de liaison 10 dans le première ou la deuxième position. Au besoin, l'homme du métier n'aura pas de difficulté particulière à ajouter une troisième barrette et un troisième crochet par exemple.The clasp 1 also comprises at least two bars 21, 22 spaced apart from one another and mounted in the cover 2 across the width of the clasp, each end of the bars being arranged to rest in a blind hole 13 machined in the wings 12 of the cover 2, the two bars defining the first and second positions of the link 10. The bars 21, 22 are provided removable or fixed and are arranged to cooperate with at least one hook 32, 32 'so as to lock the connecting link 10 in the first or the second position. If necessary, those skilled in the art will not have any particular difficulty in adding a third bar and a third hook, for example.

Le maillon de liaison 10 comprend deux extrémités 15 distantes l'une de l'autre, entre lesquelles vient s'imbriquer une extrémité d'un maillon ou d'un brin du second brin de bracelet. L'assemblage est assuré par une barrette 16 traversant librement les extrémités 15 et le maillon/brin du second brin de bracelet, la barrette étant maintenue par deux vis d'extrémité 17 se logeant en tout ou partie dans le maillon de liaison 10.The connecting link 10 comprises two ends 15 spaced from one another, between which one end of a link or of a strand of the second bracelet strand is nested. The assembly is ensured by a bar 16 freely passing through the ends 15 and the link / strand of the second bracelet strand, the bar being held by two end screws 17 being housed in whole or in part in the connecting link 10.

Le maillon de liaison 10 comprend également un levier 3 présentant une première portion 30 munie d'au moins deux crochets 32, 32' chaque crochet 32,32' étant formé dans la première portion du levier 3 par un usinage dans le sens de la largeur du fermoir 1, chaque crochet présentant des dimensions proches, mais légèrement supérieures, à celles des barrettes 21, 22. Un crochet unique est également envisageable, la longueur de ce dernier correspondant alors à la distance entre la première et la dernière barrette, l'inconvénient étant que le positionnement du crochet sur la barrette choisie est moins précis.The connecting link 10 also comprises a lever 3 having a first portion 30 provided with at least two hooks 32, 32 'each hook 32,32' being formed in the first portion of the lever 3 by machining in the width direction. of the clasp 1, each hook having dimensions similar to, but slightly greater than, those of the bars 21, 22. A single hook can also be envisaged, the length of the latter then corresponding to the distance between the first and the last bar, the disadvantage being that the positioning of the hook on the chosen bar is less precise.

De manière à limiter le jeu une fois le levier 3 assemblé au maillon de liaison 10, la largeur de la première potion du levier est prévue légèrement inférieure à la largeur du couvercle 2. Le levier 3 présente également une deuxième portion 31, plus étroite que la première portion 30, faisant office de poussoir et à la base duquel est prévu un trou traversant 33de section circulaire définissant un axe de rotation pour pouvoir faire pivoter le levier 3 par rapport au maillon de liaison 10. L'assemblage du levier 3 au maillon de liaison 10 est assuré par une goupille 19 traversant le maillon de liaison 10 et le trou traversant 33. Avantageusement, la deuxième portion 31 du levier 3 est légèrement orientée vers le haut par rapport au maillon de manière à former une pente positive et augmenter l'effet de levier lorsque le porteur presse selon une direction perpendiculaire au fermoir sur cette deuxième portion formant le poussoir 30.In order to limit the play once the lever 3 is assembled to the connecting link 10, the width of the first potion of the lever is provided slightly less than the width of the cover 2. The lever 3 also has a second portion 31, narrower than the first portion 30, acting as a pusher and at the base of which is provided a through hole 33 of circular section defining an axis of rotation in order to be able to pivot the lever 3 with respect to the connecting link 10. The assembly of the lever 3 to the link connection 10 is provided by a pin 19 passing through the connecting link 10 and the through hole 33. Advantageously, the second portion 31 of the lever 3 is slightly oriented upward with respect to the link so as to form a positive slope and increase l leverage when the bearer press in a direction perpendicular to the clasp on this second portion forming the pusher 30.

Le levier 3 est agencé pour passer d'une première position dans laquelle au moins un crochet 32, 32' est en prise avec au moins une première barrette 21,22 solidaire du couvercle 2, vers au moins une deuxième position dans laquelle le crochet est libéré de son engagement avec les barrettes.The lever 3 is arranged to move from a first position in which at least one hook 32, 32 'is engaged with at least one first bar 21, 22 integral with the cover 2, to at least a second position in which the hook is freed from his engagement with the bars.

Le maillon de liaison 10 comprend un logement borgne 11 de forme sensiblement parallélépipédique, dans lequel est disposé un ressort de torsion 4, ce ressort 4 étant coiffé par l'extrémité de la deuxième portion 31 du levier 3. On comprendra que lorsque le maillon de liaison 10 et le levier sont assemblés ensemble comme illustré à la figure 2, le ressort de torsion 4 qui est monté comprimé force le levier en direction des barrettes 21, 22, de sorte que les crochets 32,32' sont en prise avec les barrettes. Inversement, lorsqu'on appuie sur l'extrémité de la deuxième portion 31 formant le poussoir suivant la flèche A à l'encontre de la force de rappel élastique du ressort 4, le ou les crochets 32,32' sont libérés de leur engagement avec la ou les barrettes du couvercle 2 et le maillon 10 est alors libre de coulisser par rapport au couvercle.The connecting link 10 comprises a blind housing 11 of substantially parallelepiped shape, in which is disposed a torsion spring 4, this spring 4 being capped by the end of the second portion 31 of the lever 3. It will be understood that when the link of link 10 and the lever are assembled together as shown in figure 2 , the torsion spring 4 which is mounted compressed forces the lever in the direction of the bars 21, 22, so that the hooks 32, 32 'are engaged with the bars. Conversely, when the end of the second portion 31 forming the pusher along arrow A is pressed against the elastic return force of the spring 4, the hook or hooks 32, 32 'are released from their engagement with the bar (s) of the cover 2 and the link 10 is then free to slide relative to the cover.

On observe également sur la figure 5 que de chaque côté du logement parallélépipédique 11 ménagé dans le maillon de liaison 10 sont usinés deux logements cylindriques 12 dans lesquels sont prévus deux trous traversant filetés 13 dans lesquels est vissée une vis 14 dont la l'extrémité de la tige fait saillie dans la cavité 16 ménagée dans le fond du couvercle 2. Comme cette cavité 16 est bornée à chacune de ses extrémités par une butée 18 qui marque le fond de la cavité 16, le maillon de liaison 10 est imperdable une fois les vis 14 vissée dans les trous 13. Selon une variante de réalisation de l'invention, un bouchon (non représenté) est chassé ou collé dans les logements cylindriques 12 afin de masquer la vis 14 et ne pas laisser apparaître un trou au regard de l'utilisateur.We also observe on the figure 5 that on each side of the parallelepipedal housing 11 formed in the connecting link 10 are machined two cylindrical housings 12 in which are provided two threaded through holes 13 in which is screwed a screw 14 whose end of the rod protrudes into the cavity 16 formed in the bottom of the cover 2. As this cavity 16 is bounded at each of its ends by a stop 18 which marks the bottom of the cavity 16, the connecting link 10 is captive once the screws 14 have been screwed into the holes 13 According to an alternative embodiment of the invention, a plug (not shown) is driven out or glued in the cylindrical housings 12 in order to hide the screw 14 and not to allow a hole to appear in the eyes of the user.

Il va de soi que la présente invention n'est pas limitée au mode de réalisation qui vient d'être décrit et que diverses modifications et variantes simples pourront être envisagées par l'homme du métier sans sortir du cadre de l'invention tel que défini par les revendications annexées.It goes without saying that the present invention is not limited to the embodiment which has just been described and that various modifications and simple variants may be envisaged by those skilled in the art without departing from the scope of the invention as defined. by the appended claims.

En particulier, il peut être envisagé de remplacer le ressort de torsion 4 par une lame-ressort, cette lame-ressort présentant un profil en forme de V. Elle est fixée en son centre au moyen d'une vis dans le fond du maillon de liaison 10 et le levier 3 est en appui élastique sur la lame-ressort. Le degré de fléchissement de la lame ressort détermine la course du levier et donc des crochets 32. Par suite, les crochets 32 sont parfaitement crantés sur les barrettes 21, 22 de sorte qu'il est impossible de perdre accidentellement le réglage du maillon de liaison 10.In particular, it can be envisaged to replace the torsion spring 4 by a leaf spring, this leaf spring having a V-shaped profile. It is fixed in its center by means of a screw in the bottom of the link. link 10 and the lever 3 bears resiliently on the leaf spring. The degree of deflection of the leaf spring determines the stroke of the lever and therefore of the hooks 32. As a result, the hooks 32 are perfectly notched on the bars 21, 22 so that it is impossible to accidentally lose the setting of the connecting link. 10.

Ainsi, pour régler le fermoir, l'utilisateur déplie dans un premier temps le fermoir 1 pour pouvoir accéder au levier. Ensuite, l'utilisateur appuie sur la portion du levier formant le poussoir de manière à dégager le ou les crochets 32, 32' de la ou les barrettes 21, 22, ainsi le maillon de liaison 10 est libre de coulisser et le porteur peut pousser ce dernier ou tirer dessus pour choisir la longueur de bracelet adaptée. Finalement, une fois la longueur choisie, le porteur relâche le poussoir qui revient dans sa position de repos sous l'effet du ressort 4, et au moins un des crochets 32, 32' engage au moins une barrette pour verrouiller la position. Le porteur n'a plus qu'à fermer le fermoir 1 pour porter la montre.Thus, to adjust the clasp, the user first unfolds the clasp 1 in order to be able to access the lever. Then, the user presses on the portion of the lever forming the pusher so as to release the hook (s) 32, 32 'from the bar (s) 21, 22, thus the connecting link 10 is free to slide and the carrier can push the latter or pull on it to choose the appropriate strap length. Finally, once the length has been chosen, the wearer releases the pusher which returns to its rest position under the effect of the spring 4, and at least one of the hooks 32, 32 'engages at least one bar to lock the position. The wearer only has to close the clasp 1 to wear the watch.

Il va de soi que le fermoir selon l'invention peut également être utilisé pour une ceinture vestimentaire. Dans ce cas, une première extrémité de la ceinture est reliée directement au couvercle 2 du fermoir, tandis que la seconde extrémité de la ceinture est reliée au couvercle 2 du fermoir avec interposition des moyens de liaison selon l'invention qui comprennent le maillon de liaison 10.It goes without saying that the clasp according to the invention can also be used for a clothing belt. In this case, a first end of the belt is connected directly to the cover 2 of the clasp, while the second end of the belt is connected to the cover 2 of the clasp with the interposition of the connecting means according to the invention which comprise the connecting link 10.

Claims (12)

Fermoir (1) pour bracelet de montre comprenant un couvercle (2) relié d'un premier côté à un premier brin de bracelet et d'un second côté à un second brin de bracelet, des moyens de liaison étant interposés entre le second brin de bracelet et le couvercle (2) du fermoir (1), ces moyens de liaison comprenant un maillon de liaison (10) coulissant suivant une direction longitudinale du fermoir (1) entre une première position dans laquelle le maillon de liaison (10) est engagé dans le couvercle (2) du fermoir (1), et une seconde position dans laquelle le maillon (10) est au moins partiellement dégagé du couvercle (2) du fermoir (1), caractérisé en ce que le fermoir comprend au moins une première et une deuxième barrettes (21, 22) montées dans le couvercle (2), et en ce que le maillon de liaison (10) comprend un levier (3) muni d'au moins un crochet (32, 32') agencé pour passer d'une première position dans laquelle l'au moins un crochet (32, 32') est en prise avec au moins une première barrette (21) solidaire du couvercle (2) du fermoir (1), vers au moins une deuxième position dans laquelle l'au moins un crochet (34) est libéré de son engagement avec ladite première barrette (21) et ledit maillon est libre de coulisser de manière à engager avec au moins un crochet (32, 32') ladite deuxième barrette (22).Clasp (1) for a watch strap comprising a cover (2) connected on a first side to a first bracelet strand and on a second side to a second bracelet strand, connecting means being interposed between the second strand of bracelet and the cover (2) of the clasp (1), these connecting means comprising a connecting link (10) sliding in a longitudinal direction of the clasp (1) between a first position in which the connecting link (10) is engaged in the cover (2) of the clasp (1), and a second position in which the link (10) is at least partially released from the cover (2) of the clasp (1), characterized in that the clasp comprises at least a first and a second bar (21, 22) mounted in the cover (2), and in that the connecting link (10) comprises a lever (3) provided with at least one hook (32, 32 ') arranged to pass a first position in which the at least one hook (32, 32 ') engages with at least a first bar ette (21) integral with the cover (2) of the clasp (1), towards at least a second position in which the at least one hook (34) is released from its engagement with said first bar (21) and said link is free to slide so as to engage with at least one hook (32, 32 ') said second bar (22). Fermoir selon la revendication 1, caractérisé en ce que le levier est agencé pour pivoter par rapport au maillon lors du passage de la première position à ladite au moins deuxième position.Clasp according to Claim 1, characterized in that the lever is arranged to pivot relative to the link during the passage from the first position to the said at least second position. Fermoir selon l'une des revendications 1 ou 2, caractérisé en ce que le levier est maintenu en première position au moyen d'un ressort logé dans le maillon de liaison.Clasp according to one of claims 1 or 2, characterized in that the lever is held in the first position by means of a spring housed in the connecting link. Fermoir selon l'une des revendications 1 à 3, caractérisé en ce que ledit au moins un crochet et ledit levier forment un élément d'un seul tenant.Clasp according to one of claims 1 to 3, characterized in that said at least one hook and said lever form an integral element. Fermoir selon l'une des revendications 1 à 4, caractérisé en ce que le couvercle comprend au moins une troisième barrette définissant une troisième position.Clasp according to one of claims 1 to 4, characterized in that the cover comprises at least a third bar defining a third position. Fermoir selon l'une des revendications 1 à 5, caractérisé en ce que le maillon de liaison (10) est équipé d'un moyen d'arrêtage empêchant l'extraction du maillon de liaison (10) du couvercle (2) de fermoir (1).Clasp according to one of claims 1 to 5, characterized in that the connecting link (10) is equipped with a stop means preventing the extraction of the connecting link (10) from the cover (2) of the clasp ( 1). Fermoir selon la revendication 6, caractérisé en ce que le moyen d'arrêtage est constitué par une vis (38) qui fait saillie dans une rainure (16) ménagée dans le fond du couvercle (2) et qui définit deux butées d'extrémité (18).Clasp according to Claim 6, characterized in that the stopper means consists of a screw (38) which projects into a groove (16) made in the bottom of the cover (2) and which defines two end stops ( 18). Fermoir selon l'une des revendications 1 à 7, caractérisé en ce que le couvercle (2) présente une section générale en forme de U et est muni de deux ailes (12) se faisant face, ces ailes (12) portant chacune sur leur face dirigée vers l'intérieur une saignée (14).Clasp according to one of claims 1 to 7, characterized in that the cover (2) has a general U-shaped section and is provided with two wings (12) facing each other, these wings (12) each bearing on their face facing inward a groove (14). Fermoir selon la revendication 8, caractérisé en ce que le maillon terminal (10) comprend des surfaces de guidage latérales (19) afin d'être guidé à coulissement dans le couvercle (2) entre le fond du couvercle (2) et les ailes (12).Clasp according to Claim 8, characterized in that the terminal link (10) comprises lateral guide surfaces (19) in order to be guided to slide in the cover (2) between the bottom of the cover (2) and the wings ( 12). Fermoir selon l'une des revendications 1 à 9, caractérisé en ce que le levier comprend deux crochets.Clasp according to one of claims 1 to 9, characterized in that the lever comprises two hooks. Fermoir selon l'une des revendications 1 à 10, caractérisé en ce que le maillon de liaison comprend un logement pour recevoir ledit ressort, ledit ressort étant en appui au moins contre le fond dudit logement et ledit levier.Clasp according to one of claims 1 to 10, characterized in that the connecting link comprises a housing for receiving said spring, said spring resting at least against the bottom of said housing and said lever. Montre bracelet équipée d'un fermoir selon l'une des revendications 1 à 11.Wristwatch equipped with a clasp according to one of claims 1 to 11.
EP19188669.6A 2019-07-26 2019-07-26 Watch strap clasp Active EP3769640B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP19188669.6A EP3769640B1 (en) 2019-07-26 2019-07-26 Watch strap clasp
CH01058/19A CH716442A2 (en) 2019-07-26 2019-08-23 Clasp for watch strap.
US15/930,492 US11284684B2 (en) 2019-07-26 2020-05-13 Clasp for a watch bracelet
JP2020087876A JP6980838B2 (en) 2019-07-26 2020-05-20 Clasp for watch bracelets
KR1020200075002A KR102360737B1 (en) 2019-07-26 2020-06-19 Clasp for a watch bracelet
CN202010659632.4A CN112293888B (en) 2019-07-26 2020-07-08 Clasp for watch bracelet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19188669.6A EP3769640B1 (en) 2019-07-26 2019-07-26 Watch strap clasp

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EP3769640A1 true EP3769640A1 (en) 2021-01-27
EP3769640B1 EP3769640B1 (en) 2022-03-30

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EP19188669.6A Active EP3769640B1 (en) 2019-07-26 2019-07-26 Watch strap clasp

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US (1) US11284684B2 (en)
EP (1) EP3769640B1 (en)
JP (1) JP6980838B2 (en)
KR (1) KR102360737B1 (en)
CN (1) CN112293888B (en)
CH (1) CH716442A2 (en)

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CN112293888B (en) 2022-10-14
CN112293888A (en) 2021-02-02
KR20210013521A (en) 2021-02-04
JP2021020052A (en) 2021-02-18
US11284684B2 (en) 2022-03-29
CH716442A2 (en) 2021-02-15
KR102360737B1 (en) 2022-02-08
JP6980838B2 (en) 2021-12-15
EP3769640B1 (en) 2022-03-30
US20210022457A1 (en) 2021-01-28

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