EP1374716A1 - Buckle for bracelet - Google Patents

Buckle for bracelet Download PDF

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Publication number
EP1374716A1
EP1374716A1 EP02014410A EP02014410A EP1374716A1 EP 1374716 A1 EP1374716 A1 EP 1374716A1 EP 02014410 A EP02014410 A EP 02014410A EP 02014410 A EP02014410 A EP 02014410A EP 1374716 A1 EP1374716 A1 EP 1374716A1
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EP
European Patent Office
Prior art keywords
pusher
arms
cam
clasp
spring
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
EP02014410A
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German (de)
French (fr)
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EP1374716B1 (en
Inventor
Michel Favre
Pascal Botteron
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.)
Cornu & Cie SA
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Cornu & Cie SA
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Publication date
Application filed by Cornu & Cie SA filed Critical Cornu & Cie SA
Priority to EP20020014410 priority Critical patent/EP1374716B1/en
Publication of EP1374716A1 publication Critical patent/EP1374716A1/en
Application granted granted Critical
Publication of EP1374716B1 publication Critical patent/EP1374716B1/en
Anticipated expiration legal-status Critical
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    • AHUMAN NECESSITIES
    • A44HABERDASHERY; JEWELLERY
    • A44CPERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C5/00Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
    • A44C5/18Fasteners for straps, chains or the like
    • A44C5/22Fasteners for straps, chains or the like for closed straps
    • A44C5/24Fasteners for straps, chains or the like for closed straps with folding devices

Definitions

  • the present invention relates to clasps, of the type intended to connect, of removably, the two ends of a bracelet, for example of a wrist watch. It is more particularly a folding clasp, comprising two rigid arms, connected to each other in an articulated manner to one of their ends and a locking system. Arms can occupy an open position, allowing the wearer to remove or slide the bracelet on the wrist, and a closed position in which the two arms are releasably secured to each other by means of the system lock.
  • clasps of the type comprising two rigid arms connected to each other by means articulation located at one of their ends. Each of their other end is provided with means of attachment to the bracelet.
  • one of these clasps has a locking system in two parts each arranged on one of the two arms.
  • the upper arm is with a piton having a lateral slit and a domed head, while the lower arm is crossed transversely by a housing generally cuboid.
  • the wall of the housing in contact with the upper arm is drilling a hole placed opposite the peak when the two arms are assembled.
  • a pusher also pierced with a hole, is mounted mobile in the housing and held in place by a spring.
  • the hole is positioned substantially in look of the hole drilled in the lower arm. So depending on the position of the pusher, the orifice opposite the peak, formed by the superimposition of the holes formed in the pusher and in the housing, is sometimes a circle, sometimes a portion of a circle.
  • the locking system further comprises a blocking likely to occupy first and second positions allowing respectively actuation and blocking of the pusher when the arms are kept closed by both parts of the locking system.
  • the blocking member consists of a cam, mounted tilting in the arm in which the pusher is mounted and comprising a cutout defining a finger, on one of its sides, which serves as a guide for a rod and a spring interposed between the rod and the cam, forming said member elastic and applying the rod against the pusher.
  • the cam when the cam occupies its first position, the rod is in abutment against one of the ends of the pusher, so that if a pressure is exerted on the latter, it drives the rod, which arms the spring.
  • the pusher can therefore be moved in its housing by a pressure at its free end.
  • the spring returns it to the rest position when the pressure is interrupted.
  • the cam occupies its second position, the finger is pressing against the pusher, the latter being thus blocked.
  • the cam has, on the side opposite the pusher, an appendage protruding from sides of the arm in which it is mounted, so as to form a lever that the user can operate to switch the cam from one to the other of its two positions.
  • the locking system is notched, the bearing surface of the rod against the pusher consists of a plurality of concave portions, the relief which separates them constituting this notch.
  • the first part comprises a peak and the second part a spring arranged to cooperate with the stud so as to lock the parts to each other when the arms are closed, and to fade when said piton is engaged there.
  • the first part comprises a peak and the second part a spring arranged to cooperate with the stud so as to lock the parts to each other when the arms are closed, and to fade when said piton is engaged there.
  • the piton has a groove
  • the spring is a wire spring, whose diameter is slightly less than the width of the piton's throat. The engagement of this spring in the groove ensures the locking of the two parts.
  • FIG. 1 shows a clasp for a bracelet according to the invention, comprising two rigid arms upper 10 and lower 12, connected to each other by articulation means 14 located at one of their ends. Each at their other end is provided with means 16 for fixing to a bracelet.
  • the clasp has a two-part locking system 18 and 20, arranged respectively on the lower 12 and upper 10 arms, at neighborhood of the fixing means 16.
  • the lower arm 12 has a seat 21 and two branches 22 and has a U shape.
  • the part 18 of the clasp is mounted at the level of the seat 21
  • the branches of the U 22 end with the articulation means 14 connecting the arms 10 and 12 to each other.
  • the arm 10 consists of a single blade 24 whose width is slightly less than the width of the free space separating the branches 22. This space accommodates the upper arm 10 when the two arms are brought together to close the clasp.
  • the arm 10 has, in its length, an elbow which defines a first part 26 and a second flat part 28 which comprises part 20 of the clasp. The curvature of the elbow is dimensioned so as to that, when the clasp is in the closed position, the profiles of part 26 and of the arm 12 are combined while the part 28 is superimposed on the seat 21 arm 12.
  • the lower arm 12 is crossed transversely by a housing 30 generally parallelepiped (figure 2b), practiced in the seat 21, closed, on one side, by an insert 31 and provided with two protrusions 32 with concave contours, which form a narrowing 33 at one of its ends.
  • This housing 30 is intended to receive component parts of part 18 of the locking system.
  • the plunger 34 is mounted movably in the housing 30 passing through the arm 12.
  • One end of the pusher 34 extends beyond one of the sides of the arm 12, so as to form a button 42 on which a user can press to activate push-button 34.
  • Cutting its second end has four concave portions 44a, 44b, 44c, 44d arranged at an angle along the path of tilting of the cam 40, so as to leave free the translation of the pusher and that it can occupy all positions, except for its second extreme position, without being in contact with the pusher 34.
  • the cam 40 is particularly illustrated in FIG. 3. It also takes place in the housing 30, in the extension of the pusher 34, on the side of the protrusions 32. Opposite the pusher 34, it has a cutout 46, so that it defines a finger 48 on one of the sides of the cut. This the latter serves as a guide for a rod 50 which is mounted therein mobile. Rod 50, secured to a spring 52, rests on one or the other of the concave portions 44, which arms the spring 52 and allows the pusher 34 to resume automatically its initial position after being actuated.
  • the cam 40 On the side opposite the pusher 34, the cam 40 has circular contours 54 and an appendage 56 protruding from the sides of the arm 12 through the narrowing 33 formed in the thickness of the arm 12 by the protrusions 32, so as to constitute a lever which the user can actuate to make tilt the cam 40.
  • the tilting of the cam 40 is guided by the pressing of its circular contours 54 on the concave contours of the protrusions 32, provided by spring pressure 52.
  • the rod 50 is engaged in the concave portion 44b and the finger 48 is disposed next to portion 44a, which is deep enough for the pushbutton can be actuated without it coming up against the cam 40.
  • the portion 44a and the finger 48 may have other shapes, adapted to each other so that, in the unlocked position of the cam, the finger does not prevent movement of the pusher 34.
  • FIG. 2b illustrating the same part 18 of the clasp, but this time when the cam 40 occupies its second position extreme, in which any translation of the pusher 34 is prevented.
  • the two extreme positions of the cam 40 are defined by the stop of appendix 56 on the protrusions 32.
  • the rod 50 In the first of these positions, the rod 50 is engaged in the concave portion 44b the pusher 34 being unlocked. In the second of these positions, the rod 50 is engaged in the concave portion 44d and finger 48 in the concave portion 44c, the latter blocking pusher 34.
  • the housing 64 of length substantially equal to that of the opening 38, is superimposed on it when the arms are closed. Its depth is sufficient to receive the piton 36.
  • the spring 66 has that a degree of freedom and that the movable end can only deviate towards outside of arm 10.
  • the diameter of the spring 66 is slightly less than the width of the groove 62 of the peak 36.
  • the height between the bottom of the housing 64 and the spring 66 is substantially the same as that separating groove 62 from top of head 60.
  • Opening the clasp requires actuation of the plunger 34, so as to laterally move the head 60 until the spring 66 is next to it groove 62. So if we place appendix 56 of cam 40 in the second extreme position described above, the head 60 can no longer be moved and the clasp is locked. It is then impossible to open the clasp.

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Abstract

The bracelet catch comprises hinged upper (10) and lower (12) arms. The upper arm having a recess (64) which fits over a spring-loaded cam (56) mounted in the lower arm and released by a press button (34).

Description

La présente invention se rapporte aux fermoirs, du type destiné à relier, de manière amovible, les deux extrémités d'un bracelet, par exemple d'un bracelet-montre. Il s'agit plus particulièrement d'un fermoir dépliant, comportant deux bras rigides, reliés l'un à l'autre de manière articulée à l'une de leurs extrémités et un système de verrouillage. Les bras peuvent occuper une position ouverte, permettant au porteur du bracelet d'enlever ou de glisser le bracelet au poignet, et une position fermée dans laquelle les deux bras sont rendus solidaires l'un de l'autre de manière amovible au moyen du système de verrouillage.The present invention relates to clasps, of the type intended to connect, of removably, the two ends of a bracelet, for example of a wrist watch. It is more particularly a folding clasp, comprising two rigid arms, connected to each other in an articulated manner to one of their ends and a locking system. Arms can occupy an open position, allowing the wearer to remove or slide the bracelet on the wrist, and a closed position in which the two arms are releasably secured to each other by means of the system lock.

Il existe actuellement sur le marché de nombreux bracelets munis de fermoirs du type comportant deux bras rigides reliés l'un à l'autre par des moyens d'articulation situés à l'une de leurs extrémités. Chacune de leur autre extrémité est dotée de moyens de fixation au bracelet.There are currently many bracelets on the market with clasps of the type comprising two rigid arms connected to each other by means articulation located at one of their ends. Each of their other end is provided with means of attachment to the bracelet.

Par exemple, l'un de ces fermoirs comporte un système de verrouillage en deux parties disposées chacune sur l'un des deux bras. Le bras supérieur est doté d'un piton présentant une fente latérale et une tête bombée, tandis que le bras inférieur est traversé transversalement par un logement globalement parallélépipédique. La paroi du logement au contact du bras supérieur est percée d'un trou placé en regard du piton lorsque les deux bras sont assemblés.For example, one of these clasps has a locking system in two parts each arranged on one of the two arms. The upper arm is with a piton having a lateral slit and a domed head, while the lower arm is crossed transversely by a housing generally cuboid. The wall of the housing in contact with the upper arm is drilling a hole placed opposite the peak when the two arms are assembled.

Un poussoir, lui aussi percé d'un trou, est monté mobile dans le logement et maintenu en place par un ressort. Le trou est positionné sensiblement en regard du trou percé dans le bras inférieur. Donc, selon la position du poussoir, l'orifice en regard du piton, formé par la superposition des trous formés dans le poussoir et dans le logement, est tantôt un cercle, tantôt une portion de cercle.A pusher, also pierced with a hole, is mounted mobile in the housing and held in place by a spring. The hole is positioned substantially in look of the hole drilled in the lower arm. So depending on the position of the pusher, the orifice opposite the peak, formed by the superimposition of the holes formed in the pusher and in the housing, is sometimes a circle, sometimes a portion of a circle.

Ainsi, lorsque l'on veut fermer le fermoir, il suffit de superposer les deux bras, le piton, par sa tête bombée, venant au contact de la paroi du trou ménagé dans le poussoir à travers celui ménagé dans le logement. L'appui fait s'écarter le poussoir en mettant le ressort en tension jusqu'à ce que la fente latérale du piton soit au niveau du poussoir et que celui-ci, en reprenant sa position de repos, s'engage dans la fente, rendant ainsi impossible l'ouverture du fermoir.So when you want to close the clasp, you just have to overlap the two arms, the piton, by its domed head, coming into contact with the wall of the formed hole in the pusher through the one provided in the housing. Support done move aside the pusher by putting the spring in tension until the slot side of the piton is at the level of the pusher and that the latter, resuming its rest position, engages in the slot, making opening impossible of the clasp.

Pour l'ouvrir à nouveau, il faut que l'utilisateur actionne le poussoir de manière à ce qu'il le dégage de la fente du piton et qu'il laisse parfaitement circulaire l'orifice présent en regard du piton.To open it again, the user has to actuate the button that it releases it from the slot of the piton and that it leaves perfectly circular the orifice present opposite the peak.

Cette solution donne, de manière générale, entière satisfaction, toutefois, le poussoir peut être actionné de façon intempestive, ce qui peut provoquer l'ouverture du fermoir et, éventuellement, la perte du bracelet.This solution gives, in general, complete satisfaction, however, the push button can be pressed inadvertently, which can cause opening the clasp and possibly losing the bracelet.

La présente invention propose un fermoir pour bracelet permettant d'éviter des ouvertures intempestives. Il comprend, de manière connue, deux bras rigides, reliés l'un à l'autre de manière articulée à l'une de leurs extrémités et un système de verrouillage comprenant :

  • deux parties, chacune solidaire de l'un desdits bras, mobiles l'une en référence à l'autre et susceptibles d'occuper une première position, dans laquelle elles coopèrent pour maintenir les bras fermés, et une deuxième position dans laquelle elles sont libres l'une en référence à l'autre pour permettre l'ouverture des bras, et
  • un poussoir, monté mobile sur l'un des bras et agencé pour assurer le déplacement de l'une des parties en référence à l'autre, de manière à ce qu'elles passent de la première à la deuxième position, et
  • un organe élastique coopérant avec le poussoir est agencé de manière à ce que lesdites parties passent de la deuxième à la première position.
The present invention provides a bracelet clasp to prevent inadvertent openings. It comprises, in known manner, two rigid arms, connected to one another in an articulated manner at one of their ends and a locking system comprising:
  • two parts, each integral with one of said arms, movable one with reference to the other and capable of occupying a first position, in which they cooperate to keep the arms closed, and a second position in which they are free one with reference to the other to allow the opening of the arms, and
  • a pusher, mounted movably on one of the arms and arranged to move one of the parts with reference to the other, so that they pass from the first to the second position, and
  • an elastic member cooperating with the pusher is arranged so that said parts pass from the second to the first position.

Selon l'invention, le système de verrouillage comporte, en outre, un organe de blocage susceptible d'occuper des première et deuxième positions permettant respectivement l'actionnement et le blocage du poussoir lorsque les bras sont maintenus fermés par les deux parties du système de verrouillage.According to the invention, the locking system further comprises a blocking likely to occupy first and second positions allowing respectively actuation and blocking of the pusher when the arms are kept closed by both parts of the locking system.

Avantageusement, l'organe de blocage est constitué d'une came, montée basculante dans le bras dans lequel est monté le poussoir et comportant une découpe définissant un doigt, sur l'un de ses côtés, qui sert de guide à une tige et à un ressort intercalé entre la tige et la came, formant ledit organe élastique et appliquant la tige contre le poussoir.Advantageously, the blocking member consists of a cam, mounted tilting in the arm in which the pusher is mounted and comprising a cutout defining a finger, on one of its sides, which serves as a guide for a rod and a spring interposed between the rod and the cam, forming said member elastic and applying the rod against the pusher.

De façon avantageuse, lorsque la came occupe sa première position, la tige est en appui contre l'une des extrémités du poussoir, de telle sorte que si une pression est exercée sur ce dernier, il entraíne la tige, laquelle arme le ressort. Le poussoir peut donc être ainsi déplacé dans son logement par une pression à son extrémité libre. Le ressort le ramène en position de repos lorsque la pression est interrompue. Lorsque la came occupe sa deuxième position, le doigt est en appui contre le poussoir, ce dernier étant ainsi bloqué.Advantageously, when the cam occupies its first position, the rod is in abutment against one of the ends of the pusher, so that if a pressure is exerted on the latter, it drives the rod, which arms the spring. The pusher can therefore be moved in its housing by a pressure at its free end. The spring returns it to the rest position when the pressure is interrupted. When the cam occupies its second position, the finger is pressing against the pusher, the latter being thus blocked.

La came comporte, du côté opposé au poussoir, un appendice dépassant des côtés du bras dans lequel elle est montée, de manière à former un levier que l'utilisateur peut actionner pour faire basculer la came de l'une à l'autre de ses deux positions.The cam has, on the side opposite the pusher, an appendage protruding from sides of the arm in which it is mounted, so as to form a lever that the user can operate to switch the cam from one to the other of its two positions.

Avantageusement, le système de verrouillage est à cran, la surface d'appui de la tige contre le poussoir est constituée d'une pluralité de portions concaves, le relief qui les sépare constituant ce cran.Advantageously, the locking system is notched, the bearing surface of the rod against the pusher consists of a plurality of concave portions, the relief which separates them constituting this notch.

Pour que le fermoir présente des conditions optimales de verrouillage, il est nécessaire que les deux parties du système de verrouillage soient bien accrochées l'une à l'autre. Par contre, pour le confort de l'utilisateur, il faut que la fermeture puisse se faire avec souplesse. Un autre but de la présente invention est de garantir à la fois une bonne rigidité en position fermée et une grande souplesse lors de l'opération de fermeture. A cet effet, dans le fermoir selon l'invention, la première partie comprend un piton et la deuxième partie un ressort agencé pour coopérer avec le piton de manière à verrouiller les parties l'une à l'autre lorsque les bras sont fermés, et pour s'effacer lorsque ledit piton y est engagé. Une telle structure permet, de plus, de fermer le fermoir, même lorsque l'organe de blocage bloque le poussoir.In order for the clasp to have optimum locking conditions, it is necessary that the two parts of the locking system are well attached to each other. On the other hand, for the comfort of the user, it is necessary that the closing can be done with flexibility. Another purpose of this invention is to guarantee both good rigidity in the closed position and a great flexibility during the closing operation. For this purpose, in the clasp according to the invention, the first part comprises a peak and the second part a spring arranged to cooperate with the stud so as to lock the parts to each other when the arms are closed, and to fade when said piton is engaged there. Such a structure also makes it possible to close the clasp, even when the blocking member blocks the pusher.

Avantageusement, le piton comporte une gorge, et le ressort est un ressort-fil, dont le diamètre est légèrement inférieur à la largeur de la gorge du piton. L'engagement de ce ressort dans la gorge assure le verrouillage des deux parties.Advantageously, the piton has a groove, and the spring is a wire spring, whose diameter is slightly less than the width of the piton's throat. The engagement of this spring in the groove ensures the locking of the two parts.

L'invention sera mieux comprise à la lecture de la description qui suit, faite en regard du dessin annexé sur lequel :

  • la figure 1 est une vue en perspective des deux bras assemblés, en position ouverte; et
  • la figure 2 montre une vue en coupe du système de verrouillage, respectivement en position déverrouillée en a et verrouillée en b; et
  • les figures 3 et 4 représentent des pièces constitutives du système de verrouillage.
The invention will be better understood on reading the description which follows, made with reference to the appended drawing in which:
  • Figure 1 is a perspective view of the two arms assembled, in the open position; and
  • Figure 2 shows a sectional view of the locking system, respectively in the unlocked position at a and locked at b ; and
  • Figures 3 and 4 show component parts of the locking system.

Sur la figure 1, on a représenté un fermoir pour bracelet selon l'invention, comportant deux bras rigides supérieur 10 et inférieur 12, reliés l'un à l'autre par des moyens d'articulation 14 situés à l'une de leurs extrémités. Chacune de leur autre extrémité est dotée de moyens de fixation 16 à un bracelet.FIG. 1 shows a clasp for a bracelet according to the invention, comprising two rigid arms upper 10 and lower 12, connected to each other by articulation means 14 located at one of their ends. Each at their other end is provided with means 16 for fixing to a bracelet.

Le fermoir comporte un système de verrouillage en deux parties 18 et 20, disposées respectivement sur les bras inférieur 12 et supérieur 10, au voisinage des moyens de fixation 16.The clasp has a two-part locking system 18 and 20, arranged respectively on the lower 12 and upper 10 arms, at neighborhood of the fixing means 16.

Le bras inférieur 12 comporte une assise 21 et deux branches 22 et présente une forme de U. La partie 18 du fermoir est montée au niveau de l'assise 21 Les branches du U 22 se terminent par les moyens d'articulation 14 reliant les bras 10 et 12 l'un à l'autre.The lower arm 12 has a seat 21 and two branches 22 and has a U shape. The part 18 of the clasp is mounted at the level of the seat 21 The branches of the U 22 end with the articulation means 14 connecting the arms 10 and 12 to each other.

Le bras 10 est constitué d'une seule lame 24 dont la largeur est légèrement inférieure à la largeur de l'espace libre séparant les branches 22. Cet espace permet de recevoir le bras supérieur 10 lorsque l'on rapproche les deux bras pour fermer le fermoir. Le bras 10 présente, dans sa longueur, un coude qui délimite une première partie 26 et une deuxième partie plate 28 qui comporte la partie 20 du fermoir. La courbure du coude est dimensionnée de manière à ce que, lorsque le fermoir est en position fermée, les profils de la partie 26 et du bras 12 soient confondus tandis que la partie 28 se superpose à l'assise 21 du bras 12.The arm 10 consists of a single blade 24 whose width is slightly less than the width of the free space separating the branches 22. This space accommodates the upper arm 10 when the two arms are brought together to close the clasp. The arm 10 has, in its length, an elbow which defines a first part 26 and a second flat part 28 which comprises part 20 of the clasp. The curvature of the elbow is dimensioned so as to that, when the clasp is in the closed position, the profiles of part 26 and of the arm 12 are combined while the part 28 is superimposed on the seat 21 arm 12.

Le bras inférieur 12 est traversé transversalement par un logement 30 globalement parallélépipédique (figure 2b), pratiqué dans l'assise 21, fermé, sur une face, par une pièce rapportée 31 et muni de deux protubérances 32 dotées de contours concaves, qui forment un rétrécissement 33 à l'une de ses extrémités. Ce logement 30 est destiné à recevoir des pièces constitutives de la partie 18 du système de verrouillage.The lower arm 12 is crossed transversely by a housing 30 generally parallelepiped (figure 2b), practiced in the seat 21, closed, on one side, by an insert 31 and provided with two protrusions 32 with concave contours, which form a narrowing 33 at one of its ends. This housing 30 is intended to receive component parts of part 18 of the locking system.

La partie 18 comporte :

  • un poussoir 34 monté mobile en translation dans le logement 30, du côté opposé à celui comportant les protubérances 32,
  • un piton 36, rendu solidaire du poussoir 34 par exemple par soudage, dépassant du bras par une ouverture oblongue 38 de longueur définissant le débattement du poussoir et ménagée dans la paroi du logement 30, et destiné à coopérer avec la partie 20 du fermoir pour l'accrochage des deux parties 18 et 20, au moyen d'une tête 60 dont l'extrémité libre est bombée et d'une gorge 62 disposée sous la tête (figure 4), et
  • une came 40, montée basculante dans le logement 30 du côté de son extrémité rétrécie, pouvant notamment occuper une première position extrême dans laquelle elle laisse libre la translation du poussoir (figure 2a) et une deuxième position extrême dans laquelle toute translation est bloquée (figure 2b).
Part 18 includes:
  • a pusher 34 mounted movable in translation in the housing 30, on the side opposite to that comprising the protrusions 32,
  • a stud 36, made integral with the plunger 34 for example by welding, projecting from the arm by an oblong opening 38 of length defining the deflection of the plunger and formed in the wall of the housing 30, and intended to cooperate with the part 20 of the clasp for the 'coupling of the two parts 18 and 20, by means of a head 60 whose free end is curved and of a groove 62 disposed under the head (FIG. 4), and
  • a cam 40, pivotally mounted in the housing 30 on the side of its narrowed end, which can in particular occupy a first extreme position in which it leaves free the translation of the pusher (FIG. 2a) and a second extreme position in which all translation is blocked (FIG. 2b).

Ces différentes pièces vont maintenant être décrites de manière plus précise en se référant à la figure 2a, illustrant la partie 18 du fermoir lorsque la came 40 occupe sa première position extrême. These different parts will now be described in more detail. referring to Figure 2a, showing part 18 of the clasp when the cam 40 occupies its first extreme position.

Le poussoir 34 est monté mobile dans le logement 30 traversant le bras 12. L'une des extrémités du poussoir 34 se prolonge au-delà d'un des côtés du bras 12, de manière à former un bouton 42 sur lequel un utilisateur peut appuyer pour actionner le poussoir 34. La découpe de sa deuxième extrémité présente quatre portions concaves 44a, 44b, 44c, 44d disposées de biais en suivant la trajectoire du basculement de la came 40, de manière à laisser libre la translation du poussoir et qu'elle puisse occuper toutes les positions, à l'exception de sa deuxième position extrême, sans être au contact du poussoir 34.The plunger 34 is mounted movably in the housing 30 passing through the arm 12. One end of the pusher 34 extends beyond one of the sides of the arm 12, so as to form a button 42 on which a user can press to activate push-button 34. Cutting its second end has four concave portions 44a, 44b, 44c, 44d arranged at an angle along the path of tilting of the cam 40, so as to leave free the translation of the pusher and that it can occupy all positions, except for its second extreme position, without being in contact with the pusher 34.

La came 40 est particulièrement illustrée sur la figure 3. Elle prend également place dans le logement 30, dans le prolongement du poussoir 34, du côté des protubérances 32. En regard du poussoir 34, elle présente une découpe 46, de sorte qu'elle définit un doigt 48 sur l'un des côtés de la découpe. Cette dernière sert de guide à une tige 50 qui y est montée mobile. La tige 50, solidaire d'un ressort 52, s'appuie sur l'une ou l'autre des portions concaves 44, ce qui arme le ressort 52 et permet au poussoir 34 de reprendre automatiquement sa position initiale après avoir été actionné.The cam 40 is particularly illustrated in FIG. 3. It also takes place in the housing 30, in the extension of the pusher 34, on the side of the protrusions 32. Opposite the pusher 34, it has a cutout 46, so that it defines a finger 48 on one of the sides of the cut. This the latter serves as a guide for a rod 50 which is mounted therein mobile. Rod 50, secured to a spring 52, rests on one or the other of the concave portions 44, which arms the spring 52 and allows the pusher 34 to resume automatically its initial position after being actuated.

Du côté opposé au poussoir 34, la came 40 présente des contours circulaires 54 et un appendice 56 dépassant des côtés du bras 12 à travers le rétrécissement 33 formé dans l'épaisseur du bras 12 par les protubérances 32, de manière à constituer un levier que l'utilisateur peut actionner pour faire basculer la came 40. Le basculement de la came 40 est guidé par l'appui de ses contours circulaires 54 sur les contours concaves des protubérances 32, procuré par la pression du ressort 52.On the side opposite the pusher 34, the cam 40 has circular contours 54 and an appendage 56 protruding from the sides of the arm 12 through the narrowing 33 formed in the thickness of the arm 12 by the protrusions 32, so as to constitute a lever which the user can actuate to make tilt the cam 40. The tilting of the cam 40 is guided by the pressing of its circular contours 54 on the concave contours of the protrusions 32, provided by spring pressure 52.

Particulièrement à la première position de la came, illustrée sur la figure 2a, dans laquelle l'appendice 56 est en butée contre l'une des protubérances 32, la tige 50 est engagée dans la portion concave 44b et le doigt 48 est disposé en regard de la portion 44a, qui est suffisamment profonde pour que le poussoir puisse être actionné sans qu'il vienne buter contre la came 40. On notera que la portion 44a et le doigt 48 peuvent avoir d'autres formes, adaptées l'une à l'autre de manière à ce que, en position déverrouillée de la came, le doigt n'empêche pas le déplacement du poussoir 34.Particularly in the first position of the cam, illustrated in FIG. 2a, in which the appendix 56 abuts against one of the protrusions 32, the rod 50 is engaged in the concave portion 44b and the finger 48 is disposed next to portion 44a, which is deep enough for the pushbutton can be actuated without it coming up against the cam 40. We note that the portion 44a and the finger 48 may have other shapes, adapted to each other so that, in the unlocked position of the cam, the finger does not prevent movement of the pusher 34.

On se référera maintenant à la figure 2b illustrant la même partie 18 du fermoir, mais cette fois, lorsque la came 40 occupe sa deuxième position extrême, dans laquelle toute translation du poussoir 34 est empêchée.We will now refer to FIG. 2b illustrating the same part 18 of the clasp, but this time when the cam 40 occupies its second position extreme, in which any translation of the pusher 34 is prevented.

Les dimensions de la came d'une part, et particulièrement la longueur du doigt 48, et des portions concaves 44 du poussoir 34, d'autre part, sont ajustées de manière à ce que, dans cette position, l'appendice 56 étant en butée contre l'autre protubérance 32, le doigt 48 soit engagé dans la portion concave 44c. La tige 50 est alors appuyée sur la portion 44d. On notera que le relief qui sépare la portion 44c de la portion 44d constitue un cran du système de verrouillage. La tige 50, passant ainsi de la portion 44c à la portion 44d, doit vaincre ce cran. De la sorte, cette position est garantie, à moins d'une action volontaire.The dimensions of the cam on the one hand, and in particular the length of the finger 48, and concave portions 44 of the pusher 34, on the other hand, are adjusted by so that, in this position, the appendix 56 abuts against the other protrusion 32, the finger 48 is engaged in the concave portion 44c. The rod 50 is then supported on the portion 44d. Note that the relief which separates the portion 44c from the portion 44d constitutes a notch of the system locking. The rod 50, thus passing from the portion 44c to the portion 44d, must defeat this notch. In this way, this position is guaranteed, unless an action voluntary.

Ainsi, les deux positions extrêmes de la came 40 sont définies par la butée de l'appendice 56 sur les protubérances 32. Dans la première de ces positions, la tige 50 est engagée dans la portion concave 44b le poussoir 34 étant débloqué. Dans la deuxième de ces positions, la tige 50 est engagée dans la portion concave 44d et le doigt 48 dans la portion concave 44c, ce dernier bloquant le poussoir 34.Thus, the two extreme positions of the cam 40 are defined by the stop of appendix 56 on the protrusions 32. In the first of these positions, the rod 50 is engaged in the concave portion 44b the pusher 34 being unlocked. In the second of these positions, the rod 50 is engaged in the concave portion 44d and finger 48 in the concave portion 44c, the latter blocking pusher 34.

On va maintenant, en référence à la figure 1, décrire la partie 20 du fermoir disposée sur le bras supérieur 10. Elle comporte :

  • un logement 64 ménagé sur la face inférieure du bras 10, disposé latéralement et ouvert sur un côté,
  • une rainure 68 orientée longitudinalement sur le côté dans lequel le logement 64 est ouvert,
  • un trou 69 percé à l'extrémité de la rainure 68 opposée aux moyens de fixation 16, et
  • un ressort-fil 66, logé dans la rainure 68 bordant le logement 64 et fixé dans le trou 69, avantageusement par soudage.
We will now, with reference to FIG. 1, describe the part 20 of the clasp disposed on the upper arm 10. It comprises:
  • a housing 64 formed on the underside of the arm 10, arranged laterally and open on one side,
  • a groove 68 oriented longitudinally on the side in which the housing 64 is open,
  • a hole 69 drilled at the end of the groove 68 opposite the fixing means 16, and
  • a wire spring 66, housed in the groove 68 bordering the housing 64 and fixed in the hole 69, advantageously by welding.

Le logement 64, de longueur sensiblement égale à celle de l'ouverture 38, est superposé à celle-ci lorsque les bras sont fermés. Sa profondeur est suffisante pour recevoir le piton 36.The housing 64, of length substantially equal to that of the opening 38, is superimposed on it when the arms are closed. Its depth is sufficient to receive the piton 36.

Selon la disposition décrite ci-dessus, on comprend bien que le ressort 66 n'a qu'un degré de liberté et que l'extrémité mobile ne peut que s'écarter vers l'extérieur du bras 10.According to the arrangement described above, it is clear that the spring 66 has that a degree of freedom and that the movable end can only deviate towards outside of arm 10.

Le diamètre du ressort 66 est légèrement inférieur à la largeur de la gorge 62 du piton 36. De plus, la hauteur comprise entre le fond du logement 64 et le ressort 66 est sensiblement la même que celle séparant la gorge 62 du sommet de la tête 60.The diameter of the spring 66 is slightly less than the width of the groove 62 of the peak 36. In addition, the height between the bottom of the housing 64 and the spring 66 is substantially the same as that separating groove 62 from top of head 60.

Ainsi, lorsque l'on veut fermer le fermoir, il suffit de superposer le bras 10 sur le bras 12. Quand le ressort 66 arrive au contact de la tête 60 contre sa partie bombée, l'appui le fait s'écarter pour permettre le passage de la tête 60, jusqu'à ce qu'elle se place dans le logement 64 et que le ressort 66 prenne position dans la gorge 62. La raideur du ressort 66 étant largement inférieure à celle du ressort 52, l'accouplement des parties 18 et 20 du fermoir se fait donc sans que le poussoir ne bouge. La position de la came 40 est donc indifférente pour la fermeture du fermoir.So, when we want to close the clasp, it is enough to superimpose the arm 10 on the arm 12. When the spring 66 comes into contact with the head 60 against its part convex, the support makes it move aside to allow the passage of the head 60, until it is placed in the housing 64 and the spring 66 takes position in the groove 62. The stiffness of the spring 66 being considerably less to that of spring 52, the parts 18 and 20 of the clasp are coupled so without the pusher moving. The position of the cam 40 is therefore indifferent for closing the clasp.

L'ouverture du fermoir impose d'actionner le poussoir 34, de manière à déplacer latéralement la tête 60 jusqu'à ce que le ressort 66 se trouve à côté de la gorge 62. Donc, si l'on place l'appendice 56 de la came 40 dans la deuxième position extrême décrite ci-dessus, la tête 60 ne peut plus être déplacée et le fermoir est verrouillé. Il est alors impossible d'ouvrir le fermoir.Opening the clasp requires actuation of the plunger 34, so as to laterally move the head 60 until the spring 66 is next to it groove 62. So if we place appendix 56 of cam 40 in the second extreme position described above, the head 60 can no longer be moved and the clasp is locked. It is then impossible to open the clasp.

Si l'on veut ouvrir le fermoir, il faut d'abord le déverrouiller en mettant l'appendice 56 dans la première position extrême décrite ci-dessus. Ensuite, une pression exercée sur le poussoir 34 permet de dégager la tête 60 du ressort 66. Rien ne s'oppose plus alors au déplacement relatif des bras 10 et 12 et donc, à l'ouverture du fermoir.If you want to open the clasp, you must first unlock it by putting Appendix 56 in the first extreme position described above. Then, a pressure exerted on the pusher 34 allows the head 60 to be released from the spring 66. Nothing then stands in the way of the relative displacement of the arms 10 and 12 and therefore, at the opening of the clasp.

Ainsi est proposé un fermoir pour bracelet muni d'un système de verrouillage permettant d'éviter toute ouverture intempestive et garantissant à la fois une bonne rigidité en position fermée et une grande souplesse lors de l'opération de fermeture.Thus is proposed a bracelet clasp provided with a locking system avoiding any untimely opening and guaranteeing both good stiffness in closed position and great flexibility during operation closing.

L'exemple qui vient d'être décrit n'est qu'une application particulière du fermoir selon l'invention. Il peut, notamment, être simplement adapté à un fermoir à trois bras.The example which has just been described is only a particular application of the clasp according to the invention. It can, in particular, be simply adapted to a clasp to three arms.

Il est également possible de disposer le ressort 66 sur le poussoir 34 et monter le piton 36 sur le bras 10.It is also possible to arrange the spring 66 on the pusher 34 and mount the pin 36 on the arm 10.

Par ailleurs, les moyens mis en oeuvre pour assurer le blocage du poussoir peuvent, bien entendu, présenter des configurations très différentes, sans pour autant sortir du cadre de l'invention.Furthermore, the means used to block the pusher can, of course, have very different configurations, without however, depart from the scope of the invention.

Claims (8)

Fermoir dépliant pour bracelet, comportant deux bras rigides (10, 12) reliés l'un à l'autre de manière articulée à l'une de leurs extrémités et un système de verrouillage comprenant : deux parties (18, 20), chacune solidaire de l'un desdits bras, mobiles l'une en référence à l'autre et susceptibles d'occuper une première position, dans laquelle elles coopèrent pour maintenir les bras fermés, et une deuxième position dans laquelle elles sont libres l'une en référence à l'autre pour permettre l'ouverture des bras (10, 12), un poussoir (34), monté mobile sur l'un des bras et agencé pour assurer le déplacement de l'une des parties en référence à l'autre, de manière à ce qu'elles passent de la première à la deuxième position, et un organe élastique coopérant avec le poussoir (34) est agencé de manière à ce que lesdites parties (18, 20) passent de la deuxième à la première position, caractérisé en ce que ledit système de verrouillage comporte, en outre, un organe de blocage susceptible d'occuper des première et deuxième positions permettant respectivement l'actionnement et le blocage dudit poussoir (34) lorsque les bras (10, 12) sont maintenus fermés par les deux parties (18 et 20).Folding clasp for bracelet, comprising two rigid arms (10, 12) connected to one another in an articulated manner at one of their ends and a locking system comprising: two parts (18, 20), each integral with one of said arms, movable one with reference to the other and capable of occupying a first position, in which they cooperate to keep the arms closed, and a second position in which they are free, one with reference to the other, to allow the arms (10, 12) to be opened, a pusher (34), movably mounted on one of the arms and arranged to move one of the parts with reference to the other, so that they pass from the first to the second position, and an elastic member cooperating with the pusher (34) is arranged so that said parts (18, 20) pass from the second to the first position, characterized in that said locking system further comprises a blocking member capable of occupying first and second positions allowing respectively actuation and blocking of said pusher (34) when the arms (10, 12) are kept closed by the two parties (18 and 20). Fermoir selon la revendication 1, caractérisé en ce que l'organe de blocage est constitué d'une came (40), montée basculante dans le bras dans lequel est monté le poussoir, et comportant une découpe (46) définissant un doigt (48) sur l'un de ses côtés qui sert de guide à une tige (50) et à un ressort (52) intercalé entre la tige (50) et la came (40), formant ledit organe élastique et appliquant ladite tige (50) contre le poussoir (34).Clasp according to claim 1, characterized in that the blocking member consists of a cam (40), pivotally mounted in the arm in which the pusher is mounted, and comprising a cutout (46) defining a finger (48) on one of its sides which serves as a guide for a rod (50) and a spring (52) interposed between the rod (50) and the cam (40), forming said elastic member and applying said rod (50) against the pusher (34). Fermoir selon la revendication 2, caractérisé en ce que, dans la deuxième position de la came (40), le doigt (48) est en appui contre le poussoir (34). Clasp according to claim 2, characterized in that , in the second position of the cam (40), the finger (48) bears against the pusher (34). Fermoir selon l'une des revendications 2 et 3, caractérisé en ce que la came (40) comporte, du côté opposé au poussoir (34), un appendice (56) dépassant des côtés du bras dans lequel elle est montée, de manière à former un levier que l'utilisateur peut actionner pour faire basculer ladite came (40) de l'une à l'autre des ses deux positions.Clasp according to one of claims 2 and 3, characterized in that the cam (40) comprises, on the side opposite the pusher (34), an appendage (56) protruding from the sides of the arm in which it is mounted, so as to forming a lever that the user can actuate to tilt said cam (40) from one to the other of its two positions. Fermoir selon l'une des revendications 1 à 4, caractérisé en ce que le système de verrouillage est à cran.Clasp according to one of claims 1 to 4, characterized in that the locking system is notched. Fermoir selon la revendication 5, caractérisé en ce que la surface d'appui du poussoir (34) sur la tige (50) est constituée d'une pluralité de portions concaves (44), le relief qui les sépare constituant ledit cran.Clasp according to claim 5, characterized in that the bearing surface of the pusher (34) on the rod (50) consists of a plurality of concave portions (44), the relief which separates them constituting said notch. Fermoir selon la revendication 1, caractérisé en ce que la première partie (18) comprend un piton (36) et la deuxième partie (20) un ressort (66) agencé pour coopérer avec ledit piton (36) de manière à verrouiller les parties l'une à l'autre lorsque les bras (10, 12) sont fermés, et pour s'effacer lorsque ledit piton (36) y est engagé.Clasp according to claim 1, characterized in that the first part (18) comprises a stud (36) and the second part (20) a spring (66) arranged to cooperate with said stud (36) so as to lock the parts l 'to each other when the arms (10, 12) are closed, and to disappear when said piton (36) is engaged therein. Fermoir selon la revendication 7, caractérisé en ce que le piton (36) comporte une gorge (62), en ce que le deuxième ressort (66) est un ressort-fil, dont le diamètre est légèrement inférieur à la largeur de la gorge (62) du piton (36) et en ce que son engagement dans ladite gorge (62) assure le verrouillage des deux parties (18, 20).Clasp according to claim 7, characterized in that the stud (36) has a groove (62), in that the second spring (66) is a wire spring, the diameter of which is slightly less than the width of the groove ( 62) of the peak (36) and in that its engagement in said groove (62) ensures the locking of the two parts (18, 20).
EP20020014410 2002-06-28 2002-06-28 Buckle for bracelet Expired - Lifetime EP1374716B1 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102613783A (en) * 2012-03-05 2012-08-01 陈其宗 Watchband buckle structure
CN102613782A (en) * 2012-03-05 2012-08-01 陈其宗 Watchband buckle
EP2721943A1 (en) 2012-10-16 2014-04-23 Rolex Sa Resilient joint for clockwork assembly
CN103767256B (en) * 2012-10-16 2016-11-30 劳力士有限公司 The elastic hinge joint of clock and watch assembly
CN107647538A (en) * 2017-11-17 2018-02-02 深圳市蓝丝腾科技有限公司 A kind of wearable intelligent bracelet easy to wear

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101966029A (en) * 2010-11-11 2011-02-09 赵威 Front-mounted multi-functional inner buckled pearl necklace jewelry lock catch

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2902181A1 (en) * 1979-01-20 1980-07-24 Reinhold Heckel Press-button fastening for necklace - has profiled throat acting on locking spring and requiring rotation for release
US4928359A (en) * 1988-07-15 1990-05-29 Omega Sa Extendable bracelet clasp with fine adjustment
EP0908112A1 (en) * 1997-03-31 1999-04-14 Citizen Watch Co., Ltd. Locking device of a buckle of belt-shaped ornament

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2902181A1 (en) * 1979-01-20 1980-07-24 Reinhold Heckel Press-button fastening for necklace - has profiled throat acting on locking spring and requiring rotation for release
US4928359A (en) * 1988-07-15 1990-05-29 Omega Sa Extendable bracelet clasp with fine adjustment
EP0908112A1 (en) * 1997-03-31 1999-04-14 Citizen Watch Co., Ltd. Locking device of a buckle of belt-shaped ornament

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102613783A (en) * 2012-03-05 2012-08-01 陈其宗 Watchband buckle structure
CN102613782A (en) * 2012-03-05 2012-08-01 陈其宗 Watchband buckle
EP2721943A1 (en) 2012-10-16 2014-04-23 Rolex Sa Resilient joint for clockwork assembly
CN103767256A (en) * 2012-10-16 2014-05-07 劳力士有限公司 Elastic articulation for horological assembly
CN103767256B (en) * 2012-10-16 2016-11-30 劳力士有限公司 The elastic hinge joint of clock and watch assembly
US9635911B2 (en) 2012-10-16 2017-05-02 Rolex Sa Elastic articulation for horological assembly
CN107647538A (en) * 2017-11-17 2018-02-02 深圳市蓝丝腾科技有限公司 A kind of wearable intelligent bracelet easy to wear

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