CH666165A5

CH666165A5 - Safety concealed fastener for bracelet - has two hinged arms fitting together and held closed by bridge clipped over arms and bracelet

Info

Publication number: CH666165A5
Application number: CH144285A
Authority: CH
Inventors: Jean Paolini
Original assignee: Ebel Sa
Priority date: 1985-04-03
Filing date: 1985-04-03
Publication date: 1988-07-15

Abstract

The fastener has upper and lower arms (1,2) that are joined at one end by a hinge (3). The other end (4) of the upper arm (2) is fixed to one end of the bracelet (7). The fastener is held closed by a bridge (5) that is hinged (6) on the side of the lower arm (1). The bridge goes over the bracelet and it has a notch (8) which locks on to the opposite side of the lower arm. The lower arm has an opening (9) in which the upper arm fits when the fastener is closed. USE/ADVANTAGE - The fastener is for a bracelet and it is concealed when closed and it cannot open accidentally.

Description

       

  
 



   DESCRIPTION



   On connaît des fermoirs de bracelet dont la construction leur permet d'être dissimulés en position fermée. C'est notamment le cas du fermoir décrit dans le brevet suisse 646 852.



   Dans ce fermoir, les deux bras qui se rabattent   l'un    sur l'autre sont verrouillés   l'un    à l'autre en position fermée par un cran pratiqué dans   l'un    des bras, le bout de l'autre bras venant s'insérer par élasticité dans ce cran.



   Ce genre de fermoir est assez sûr. Toutefois, il arrive que, en raison de l'usure ou d'une déformation, le fermoir tende à s'ouvrir de   maniére    inattendue. Cela peut provoquer des désagréments, ou même un risque dans les cas où une montre est attachée au bracelet, et où il peut être absolument nécessaire de disposer de cet instrument à chaque seconde, comme cela arrive notamment lors de plongées sous-marines.



   La présente invention vise à fournir une sécurité supplémentaire en empêchant le fermoir de s'ouvrir, même si les moyens habituels de fermeture cessent de remplir leur fonction.



   L'invention est définie dans la revendication 1.



   Les dessins représentent, à titre d'exemple, une forme d'exécution de l'invention.



   La figure 1 est une vue partielle de dessus d'un bracelet avec un fermoir selon l'invention, en position fermée.



   La figure 2 est une vue latérale d'une portion du fermoir représenté à la figure 1.



   La figure 3 est une coupe selon la ligne III-III de la figure 1.



   La figure 4 est une vue en perspective cavalière d'un fermoir selon l'invention, en position ouverte.



   Le fermoir comprend deux bras. Le bras de dessous 1 est lié par une extrémité au bras de dessus 2. A cette extrémité qui relie les deux bras, un gond 3 permet au bras de dessus de se rabattre sur le bras de dessous. Du fait que le bras de dessous présente une échancrure (9) en son milieu, le bras de dessus est entièrement inclus dans le bras de dessous en position fermée, et il est maintenu dans cette position par un cran 10. Sur un côté du bras de dessous se trouve un deuxième gond 6. A ce gond est attaché par une extrémité un pont 5, qui présente la forme d'une arche aplatie. A son autre extrémité, le pont présente un cran 8 qui lui permet de se verrouiller sur l'autre côté du bras de dessous. Une fois rabattu, le pont emprisonne le brin 7 du bracelet qui est attaché au bras de dessus, ainsi que ce bras. 

  Il n'est plus possible, une fois le pont rabattu, d'ouvrir le fermoir sans ouvrir aussi le pont. 



  
 



   DESCRIPTION



   Bracelet clasps are known, the construction of which allows them to be hidden in the closed position. This is particularly the case of the clasp described in Swiss patent 646,852.



   In this clasp, the two arms which fold over one another are locked to one another in the closed position by a notch made in one of the arms, the end of the other arm coming from insert by elasticity in this notch.



   This kind of clasp is quite secure. However, it happens that, due to wear or deformation, the clasp tends to open unexpectedly. This can cause inconvenience, or even a risk in cases where a watch is attached to the bracelet, and where it may be absolutely necessary to have this instrument available every second, as happens especially during scuba diving.



   The present invention aims to provide additional security by preventing the clasp from opening, even if the usual closing means cease to fulfill their function.



   The invention is defined in claim 1.



   The drawings show, by way of example, an embodiment of the invention.



   Figure 1 is a partial top view of a bracelet with a clasp according to the invention, in the closed position.



   FIG. 2 is a side view of a portion of the clasp shown in FIG. 1.



   Figure 3 is a section along line III-III of Figure 1.



   Figure 4 is a perspective view of a clasp according to the invention, in the open position.



   The clasp has two arms. The lower arm 1 is connected at one end to the upper arm 2. At this end which connects the two arms, a hinge 3 allows the upper arm to fall back onto the lower arm. Because the lower arm has a notch (9) in the middle, the upper arm is fully included in the lower arm in the closed position, and it is held in this position by a notch 10. On one side of the arm from below there is a second hinge 6. To this hinge is attached by one end a bridge 5, which has the shape of a flat arch. At its other end, the bridge has a notch 8 which allows it to lock on the other side of the lower arm. Once folded down, the bridge traps the strand 7 of the bracelet which is attached to the upper arm, as well as this arm.

  Once the bridge has been folded down, it is no longer possible to open the clasp without also opening the bridge.

Claims

CLAIMS 1. Bracelet clasp, characterized in that it comprises at least two arms (1, 2) linked to one another at one end by a hinge (3), at least one of the arms having at its other end means (4) for fixing to at least one strand of the bracelet (7), characterized in that it comprises at least one bridge (5) fixed at one end by a second hinge (6) to the lower arm (1) , the bridge being transverse to the clasp and being capable of being folded down by pivoting on its hinge on the strand (7) fixed to the upper arm (2), the bridge having at its other end means (8) to be locked on the side of the lower arm (1) opposite the hinge (6), the strand (7) and the upper arm (2) being trapped when the bridge is locked so that the clasp cannot be opened without unlocking the bridge .

2. Clasp according to claim 1, characterized in that the locking means (8) are a notch.

3. Clasp according to claim 1, characterized in that it comprises two arms, in that the lower arm (I) has a notch (9) capable of receiving the upper arm so that, in the closed position, the upper arm is fully included in the lower arm.

4. Clasp according to claims 2 and 3.