EP0246449A1 - Watch case and strap assembly - Google Patents

Watch case and strap assembly Download PDF

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Publication number
EP0246449A1
EP0246449A1 EP87105614A EP87105614A EP0246449A1 EP 0246449 A1 EP0246449 A1 EP 0246449A1 EP 87105614 A EP87105614 A EP 87105614A EP 87105614 A EP87105614 A EP 87105614A EP 0246449 A1 EP0246449 A1 EP 0246449A1
Authority
EP
European Patent Office
Prior art keywords
bracelet
housing
slots
grooves
pins
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
EP87105614A
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German (de)
French (fr)
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EP0246449B1 (en
Inventor
Meyrat Clément
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.)
ETA SA Manufacture Horlogere Suisse
Original Assignee
Ebauchesfabrik ETA AG
Eta SA Fabriques dEbauches
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Application filed by Ebauchesfabrik ETA AG, Eta SA Fabriques dEbauches filed Critical Ebauchesfabrik ETA AG
Publication of EP0246449A1 publication Critical patent/EP0246449A1/en
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Publication of EP0246449B1 publication Critical patent/EP0246449B1/en
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B37/00—Cases
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B37/00—Cases
    • G04B37/14—Suspending devices, supports or stands for time-pieces insofar as they form part of the case
    • G04B37/1486—Arrangements for fixing to a bracelet

Definitions

  • the subject of the present invention is an assembly comprising a watch case element comprising a middle part delimited by a lower face, an upper face and a side wall, a bracelet having one end disposed in a first housing open in said side wall, and means for retaining said end of the bracelet in said first housing.
  • the means for retaining the ends of the bracelet in the open housings in the side wall of the middle part of the case consist of pins, screws or rivets passing through the bracelet and at least part of the middle part in a direction substantially perpendicular to the plane of the bracelet.
  • the object of the present invention is to propose an assembly of the kind defined above which does not have this drawback, that is to say in which the means for retaining the ends of the bracelet in the open housings in the side wall of the middle does not require drilling holes in the bracelet. The mechanical tensile strength of the bracelet is therefore not reduced by the presence of these holes.
  • the assembly according to the invention shown schematically and by way of non-limiting example in Figures 1 to 3 comprises a watch case element consisting, in this case, by a middle represented with reference 1.
  • this middle part 1 comprises means for fixing the bottom of the box to its lower face 1a and a lens to its upper face 1b, which have not been shown.
  • the middle part 1 also comprises housings intended to receive the ends of a bracelet. These housings are formed by slots 3 and 4 formed in the side wall lc of the middle part 1 and delimited by flat and parallel faces designated respectively by the references 3a and 3b and by the references 4a and 4b, and by bottom walls. , designated respectively by the references 3c and 4c. These walls 3c and 4c have, in this example, the shape of cylinder portions. In the embodiment shown, the faces 3a, 3b, 4a and 4b of the slots 3 and 4 are also parallel to the upper and lower faces of the middle part 1.
  • the width of the slots 3 and 4 that is to say the distance which separates the face 3a from the face 3b and the face 4a from the face 4b, is substantially equal to the thickness of the bracelet which is also part of the 'assembly shown in Figures 1 to 3. Only the ends of this bracelet intended to be fixed to the middle part 1 have been shown, with the references 5 and 6.
  • the ends 5 and 6 of the bracelet are made in a compressible material such as certain types of leather, rubber or plastic.
  • the entire bracelet can of course be made of the same material.
  • the means for retaining the ends 5 and 6 of the bracelet comprise elongate retaining elements having, in this example, the shape of cylindrical pins designated by the references 7 and 8.
  • the means for retaining the ends 5 and 6 of the bracelet also include housings intended to receive the pins 7 and 8 and formed, again in this example, by grooves 9 and 10 formed in the faces 3a and 4a of the slots 3 and 4. These grooves 9 and 10 are elongated in a direction substantially perpendicular to the length of the bracelet and parallel to the underside 1a of the middle part 1.
  • the housings of the pins 7 and 8 also include cylindrical holes 9a and 10a drilled in the middle part 1, in the extension of the grooves 9 and 10 and with a diameter substantially equal to that of these pins 7 and 8.
  • the grooves 9 and 10 are made, for example, by drilling the holes 9a and 10a in the middle part 1, at the desired locations, before making the slots 3 and 4 by milling.
  • the section of these grooves 9 and 10 by a plane perpendicular to the surfaces 3a and 4a and parallel to the direction of the length of the bracelet therefore has the shape of an arc of a circle whose radius is equal to the radius of the holes 9a and 10a.
  • the middle part 1 is made of a moldable plastic
  • the slots 3 and 4 and the grooves 9 and 10 can be obtained by giving the mold used to manufacture this middle part a suitable shape.
  • Pins 7 and 8 can be made of any material, metallic or plastic.
  • the finished assembly as shown in FIG. 3 is produced by first placing the ends 5 and 6 of the bracelet in the slots 3 and 4.
  • the pins 7 and 8 are then introduced into the holes 9a and 10a and, thanks to the compressibility of the ends 5 and 6 of the bracelet, in the grooves 9 and 10. They therefore occupy part of the slots 3 and 4 serving to house the ends 5 and 6 of the bracelet.
  • the latter are therefore pushed back by these pins 7 and 8 against the faces 3b and 4b of the slots 3 and 4.
  • the friction forces which are then exerted between the various surfaces in contact with each other on the one hand maintain the ends 5 and 6 of the bracelet in the slots 3 and 4 and on the other hand prevent the pins 7 and 8 from moving along their axis. It can therefore be seen that, in the assembly shown, the ends 5 and 6 of the bracelet are effectively retained in the slots 3 and 4 without being pierced with holes.
  • a tensile force exerted on the ends 5 and 6 of the bracelet generally tends to lift the pins 7 and 8 from the bottom of the grooves 9 and 10, which has the effect of increasing the friction force of the ends 5 and 6 of the bracelet against these pins 7 and 8 and against the walls 3b and 4b of the slots 3 and 4, and therefore further improve the connection of the bracelet and the middle part.
  • the ends 5 and 6 of the bracelet must of course exceed the grooves 9 and 10 when they are arranged in these slots 3 and 4. These the latter must therefore be fairly deep, and, preferably, the ends 5 and 6 of the bracelet must be shaped so as to come into contact with the entire surface of the bottom walls 3c and 4c of the slots 3 and 4. It is for this this is because the ends 5 and 6 of the bracelet shown in FIGS. 1 to 3 end in an arc having a substantially the same radius as the bottom walls 3c and 4c of the slots 3 and 4.
  • the diameter of the pins 7 and 8 and the depth of the grooves 9 and 10 depend on the material chosen for the ends 5 and 6 of the bracelet.
  • the pins 7 and 8 are very deformable, like certain types of rubber or plastic, it is preferable to give the pins 7 and 8 a diameter greater than the width of the slots 3 and 4, and / or the grooves 9 and 10 such a depth that, when the assembly is mounted, the axes of the pins 7 and 8 are located outside the grooves 9 and 10, that is to say that they are respectively located between the faces 3a and 3b and the faces 4a and 4b.
  • the material chosen for the ends 5 and 6 of the bracelet is not very deformable, like certain types of leather or plastic, it may be necessary to give the pins 7 and 8 a diameter less than the width of the slots 3 and 4, and / or the grooves 9 and 10 a depth such that, when the assembly is mounted, the axes of the pins 7 and 8 are respectively located in the planes of the faces 3a and 4a of the slots 3 and 4, or outside these faces.
  • the diameter of the pins 7 and 8 is greater than the depth of the grooves 9 and 10.
  • ends 5 and 6 of the bracelet are made of a material such as certain types of rubber or plastic, there may be a phenomenon of creep of this material in response to the tensile forces which are normally exerted on these ends. This creep can cause, after a certain time, the exit of the ends 5 and 6 of the bracelet from the slots 3 and 4.
  • These grooves are preferably made without removing material at the ends 5 and 6 of the bracelet, for example by deforming these ends permanently using a tool of suitable shape applied with force at the desired location. If necessary, this tool can be heated to facilitate this permanent deformation.
  • the present invention is not limited to cases where the ends 5 and 6 of the bracelet are made of a deformable material.
  • these ends 5 and 6 are made of a material which is difficult to deform, such as hard plastic or metal, it suffices to make grooves in these ends 5 and 6 similar to the grooves 5a and 6a mentioned above but having a shape and arrangement such that, when the ends 5 and 6 of the bracelet are engaged in the slots 3 and 4, they form with the grooves 9 and 10 cylindrical housings having a diameter preferably slightly smaller than the diameter of the pins 7 and 8. In this way, the latter are held in place by friction after they have been forced into these housings and, of course, the ends 5 and 6 of the bracelet are retained in the slots 3 and 4.
  • the grooves 9 and 10 are preferably made in the faces of the slots 3 and 4 which, in the finished watch, are located on the side of the bottom of the box. It is obvious that these grooves 9 and 10 can also be made in the faces of the slots 3 and 4 which, in the finished watch, are located on the side of the watch glass.
  • grooves similar to grooves 9 and 10 in the two faces of the slots 3 and 4.
  • pins similar to pins 7 and 8 are then arranged in these grooves, which further improves the retention of the ends 5 and 6 of the bracelet in the slots 3 and 4.
  • the pins 7 and 8, or the four pins mentioned above may not be cylindrical, but have a non-circular section, for example oval or polygonal.
  • the grooves formed in the faces of the slots 3 and 4 and, where appropriate, in the ends 5 and 6 of the bracelet must obviously have a corresponding shape.
  • the present invention can be carried out whatever the shape of the middle part 1, and / or if the middle part 1 forms only one piece with the bottom of the box.
  • the bottom walls 3c and 4c of the slots 3 and 4 may not be in the form of a cylinder portion, as in FIGS. 1 to 3.
  • the slots 3 and 4 can be obtained, for example, by passing a bur of adequate thickness in a direction perpendicular to the length of the bracelet, over the entire width of the middle 1.
  • the bottom walls 3c and 4c are planar and pass through the middle 1 from one edge to the other.
  • the holes 9a and 9b no longer exist, and the housings of the pins 7 and 8 are simply constituted by the grooves 9 and 10 which extend over the entire width of the middle part 1.
  • the ends 5 and 6 of the bracelet may have a width equal to or even greater than the width of the middle part 1.
  • the bracelet, or at least its ends, may also have the shape of a cord, for example cylindrical, having at least one transverse dimension less than the thickness of the middle part 1.
  • the housings of the ends of the bracelet may consist of simple blind holes, of suitable section, drilled at the desired locations in the wall of the middle part 1.
  • the length of the pins 7 and 8 may be less than the total length of the housings formed by the grooves 9 and 10 and, where appropriate, by the holes 9a and 10a, and even less than the length of the grooves 9 and 10
  • the ends of the holes 9a and 10a can be closed by plugs made, for example, of the same material as the middle part 1. If they exist, these holes can also be blind, that is to say -did not open at one of their ends in the side wall of the middle part 1.
  • the surfaces 3a and 3b, and the surfaces 4a and 4b of the slots 3 and 4 may not be parallel to the planes of the lower la and upper faces 1b of the middle part 1, but form with these planes non-zero angles, so that the ends 5 and 6 of the bracelet have, near the middle, a direction such that the bracelet adapts well to the wrist of the wearer of the watch.

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  • General Physics & Mathematics (AREA)
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Abstract

Pour qu'elles ne doivent pas être percées, ce qui réduirait leur résistance mécanique à la traction, les extrémités (5, 6) du bracelet sont retenues dans des fentes (3,4) que présente la carrure (1) de la boite de montre par des goupilles (7,8) partiellement engagées dans des rainures (9,10) ménagées chacune dans une face des fentes (3,4).So that they do not have to be pierced, which would reduce their mechanical tensile strength, the ends (5, 6) of the bracelet are retained in slots (3,4) that the middle part (1) of the case presents. shown by pins (7,8) partially engaged in grooves (9,10) each formed in one face of the slots (3,4).

Description

La présente invention a pour objet un ensemble comprenant un élément de boite de montre comportant une carrure délimitée par une face inférieure, une face supérieure et une paroi latérale, un bracelet ayant une extrémité disposée dans un premier logement ouvert dans ladite paroi latérale, et des moyens de retenue de ladite extrémité du bracelet dans ledit premier logement.The subject of the present invention is an assembly comprising a watch case element comprising a middle part delimited by a lower face, an upper face and a side wall, a bracelet having one end disposed in a first housing open in said side wall, and means for retaining said end of the bracelet in said first housing.

Des ensembles tel que celui qui est défini ci-dessus sont décrits, notamment, par les documents CH-A-179155, CH-B-526148, FR-B-1399320 et DE-U-8205042.Assemblies such as that defined above are described, in particular, by the documents CH-A-179155, CH-B-526148, FR-B-1399320 and DE-U-8205042.

Dans tous ces ensembles, les moyens de retenue des extrémités du bracelet dans les logements ouverts dans la paroi latérale de la carrure de la boite sont constitués par des goupilles, des vis ou des rivets traversant le bracelet et au moins une partie de la carrure dans une direction sensiblement perpendiculaire au plan du bracelet.In all of these assemblies, the means for retaining the ends of the bracelet in the open housings in the side wall of the middle part of the case consist of pins, screws or rivets passing through the bracelet and at least part of the middle part in a direction substantially perpendicular to the plane of the bracelet.

Les trous percés dans le bracelet pour le passage de ces goupilles, de ces vis ou de ces rivets constituent des amorces de déchirure et diminuent donc la résistance mécanique à la traction du bracelet.The holes drilled in the bracelet for the passage of these pins, these screws or these rivets constitute tear initiators and therefore reduce the mechanical tensile strength of the bracelet.

Le but de la présente invention est de proposer un ensemble du genre défini ci-dessus qui ne présente pas cet inconvénient, c'est-à-dire dans lequel les moyens de retenue des extrémités du bracelet dans les logements ouverts dans la paroi latérale de la carrure ne nécessitent pas le perçage de trous dans le bracelet. La résistance mécanique à la traction du bracelet n'est donc pas diminuée par la présence de ces trous.The object of the present invention is to propose an assembly of the kind defined above which does not have this drawback, that is to say in which the means for retaining the ends of the bracelet in the open housings in the side wall of the middle does not require drilling holes in the bracelet. The mechanical tensile strength of the bracelet is therefore not reduced by the presence of these holes.

Ce but est atteint par l'ensemble revendiqué.This object is achieved by the claimed assembly.

L'invention va être maintenant décrite en détail à l'aide du dessin annexé dans lequel:

  • - la figure 1 est une vue en plan des composants d'un ensemble selon l'invention, avec une coupe partielle selon l'axe 1-1 de la figure 2;
  • - la figure 2 est une vue en élévation des composants .de la figure 1, avec une coupe partielle selon l'axe II-II de la figure 1; et
  • - la figure 3 est une vue en élévation d'un ensemble selon l'invention comprenant les composants des figures 1 et 2, partiellement coupé.
The invention will now be described in detail using the attached drawing in which:
  • - Figure 1 is a plan view of the components of an assembly according to the invention, with a partial section along the axis 1-1 of Figure 2;
  • - Figure 2 is an elevational view of the components. of Figure 1, with a partial section along the axis II-II of Figure 1; and
  • - Figure 3 is an elevational view of an assembly according to the invention comprising the components of Figures 1 and 2, partially cut.

Comme ceux qui sont décrits dans les documents mentionnés ci-dessus, l'ensemble selon l'invention représenté schématiquement et à titre d'exemple non limitatif aux figures 1 à 3 comporte un élément de boite de montre constitué, dans ce cas, par une carrure représentée avec la référence 1.Like those described in the documents mentioned above, the assembly according to the invention shown schematically and by way of non-limiting example in Figures 1 to 3 comprises a watch case element consisting, in this case, by a middle represented with reference 1.

De manière bien connue, cette carrure 1 comporte des moyens de fixation du fond de la boite à sa face inférieure la et d'une glace à sa face supérieure lb, qui n'ont pas été représentés.As is well known, this middle part 1 comprises means for fixing the bottom of the box to its lower face 1a and a lens to its upper face 1b, which have not been shown.

La carrure 1, le fond et la glace délimitent un logement 2 destiné a recevoir le mouvement et, le cas échéant, le cadran et les aiguilles de la montre. Ces divers éléments, ainsi que les moyens de fixation du mouvement à la carrure 1, n'ont pas été représentés.The middle part 1, the back and the crystal delimit a housing 2 intended to receive the movement and, where appropriate, the dial and the hands of the watch. These various elements, as well as the means for fixing the movement to the middle part 1, have not been shown.

La carrure 1 comporte également des logements destinés à recevoir les extrémités d'un bracelet. Ces logements sont constitués par des fentes 3 et 4 ménagées dans la paroi latérale lc de la carrure 1 et délimitées par des faces planes et parallèles désignées respectivement par les références 3a et 3b et par les références 4a et 4b, et par des parois de fond, désignées respectivement par les références 3c et 4c. Ces parois 3c et 4c ont, dans cet exemple, la forme de portions de cylindre. Dans la forme d'exécution représentée, les faces 3a, 3b, 4a et 4b des fentes 3 et 4 sont en outre parallèles aux faces supérieure et inférieure de la carrure 1.The middle part 1 also comprises housings intended to receive the ends of a bracelet. These housings are formed by slots 3 and 4 formed in the side wall lc of the middle part 1 and delimited by flat and parallel faces designated respectively by the references 3a and 3b and by the references 4a and 4b, and by bottom walls. , designated respectively by the references 3c and 4c. These walls 3c and 4c have, in this example, the shape of cylinder portions. In the embodiment shown, the faces 3a, 3b, 4a and 4b of the slots 3 and 4 are also parallel to the upper and lower faces of the middle part 1.

La largeur des fentes 3 et 4, c'est-à-dire la distance qui sépare la face 3a de la face 3b et la face 4a de la face 4b, est sensiblement égale à l'épaisseur du bracelet qui fait également partie de l'ensemble représenté aux figures 1 à 3. Seules les extrémités de ce bracelet destinées à être fixées à la carrure 1 ont été représentées, avec les références 5 et 6.The width of the slots 3 and 4, that is to say the distance which separates the face 3a from the face 3b and the face 4a from the face 4b, is substantially equal to the thickness of the bracelet which is also part of the 'assembly shown in Figures 1 to 3. Only the ends of this bracelet intended to be fixed to the middle part 1 have been shown, with the references 5 and 6.

Pour une raison qui sera rendue évidente par la suite de cette description, on admettra que, dans la forme d'exécution représentée aux figures 1 à 3, les extrémités 5 et 6 du bracelet sont réalisées en un matériau compressible tel que certains types de cuir, de caoutchouc ou de matière plastique. Le bracelet entier peut bien entendu être réalisé dans ce même matériau.For a reason which will be made clear later on in this description, it will be assumed that, in the embodiment shown in Figures 1 to 3, the ends 5 and 6 of the bracelet are made in a compressible material such as certain types of leather, rubber or plastic. The entire bracelet can of course be made of the same material.

Dans l'ensemble représenté aux figures 1 à 3, les moyens de retenue des extrémités 5 et 6 du bracelet comprennent des éléments de retenue allongés ayant, dans cet exemple, la forme de goupilles cylindriques désignées par les références 7 et 8.In the assembly represented in FIGS. 1 to 3, the means for retaining the ends 5 and 6 of the bracelet comprise elongate retaining elements having, in this example, the shape of cylindrical pins designated by the references 7 and 8.

Les moyens de retenue des extrémités 5 et 6 du bracelet comprennent également des logements destinés à recevoir les goupilles 7 et 8 et formés, toujours dans cet exemple, par des rainures 9 et 10 ménagées dans les faces 3a et 4a des fentes 3 et 4. Ces rainures 9 et 10 sont allongées dans une direction sensiblement perpendiculaire à la longueur du bracelet et parallèle à la face inférieure la de la carrure 1.The means for retaining the ends 5 and 6 of the bracelet also include housings intended to receive the pins 7 and 8 and formed, again in this example, by grooves 9 and 10 formed in the faces 3a and 4a of the slots 3 and 4. These grooves 9 and 10 are elongated in a direction substantially perpendicular to the length of the bracelet and parallel to the underside 1a of the middle part 1.

Les logements des goupilles 7 et 8 comprennent également des trous cylindriques 9a et 10a percés dans la carrure 1, dans le prolongement des rainures 9 et 10 et avec un diamètre sensiblement égal à celui de ces goupilles 7 et 8.The housings of the pins 7 and 8 also include cylindrical holes 9a and 10a drilled in the middle part 1, in the extension of the grooves 9 and 10 and with a diameter substantially equal to that of these pins 7 and 8.

Les rainures 9 et 10 sont réalisées, par exemple, en perçant les trous 9a et 10a dans la carrure 1, aux endroits voulus, avant de réaliser les fentes 3 et 4 par fraisage.The grooves 9 and 10 are made, for example, by drilling the holes 9a and 10a in the middle part 1, at the desired locations, before making the slots 3 and 4 by milling.

La section de ces rainures 9 et 10 par un plan perpendiculaire aux surfaces 3a et 4a et parallèle à la direction de la longueur du bracelet a donc la forme d'un arc de cercle dont le rayon est égal au rayon des trous 9a et 10a.The section of these grooves 9 and 10 by a plane perpendicular to the surfaces 3a and 4a and parallel to the direction of the length of the bracelet therefore has the shape of an arc of a circle whose radius is equal to the radius of the holes 9a and 10a.

Si la carrure 1 est en une matière plastique moulable, les fentes 3 et 4 et les rainures 9 et 10 peuvent être obtenues en donnant au moule utilisé pour fabriquer cette carrure une forme convenable.If the middle part 1 is made of a moldable plastic, the slots 3 and 4 and the grooves 9 and 10 can be obtained by giving the mold used to manufacture this middle part a suitable shape.

Les goupilles 7 et 8 peuvent être réalisées en un matériau quelconque, métallique ou plastique.Pins 7 and 8 can be made of any material, metallic or plastic.

L'ensemble terminé tel qu'il est représenté à la figure 3 est réalisé en plaçant tout d'abord les extrémités 5 et 6 du bracelet dans les fentes 3 et 4. Les goupilles 7 et 8 sont ensuite introduites dans les trous 9a et 10a et, grâce à la compressibilité des extrémités 5 et 6 du bracelet, dans les rainures 9 et 10. Elles occupent donc une partie des fentes 3 et 4 servant de logement aux extrémités 5 et 6 du bracelet. Ces dernières sont donc repoussées par ces goupilles 7 et 8 contre les faces 3b et 4b des fentes 3 et 4. Les forces de frottement qui s'exercent alors entre les diverses surfaces en contact les unes avec les autres maintiennent d'une part les extrémités 5 et 6 du bracelet dans les fentes 3 et 4 et empé- chent d'autre part les goupilles 7 et 8 de se déplacer selon leur axe. On voit donc que, dans l'ensemble représenté, les extrémités 5 et 6 du bracelet sont effectivement retenues dans les fentes 3 et 4 sans qu'elles soient percées de trous.The finished assembly as shown in FIG. 3 is produced by first placing the ends 5 and 6 of the bracelet in the slots 3 and 4. The pins 7 and 8 are then introduced into the holes 9a and 10a and, thanks to the compressibility of the ends 5 and 6 of the bracelet, in the grooves 9 and 10. They therefore occupy part of the slots 3 and 4 serving to house the ends 5 and 6 of the bracelet. The latter are therefore pushed back by these pins 7 and 8 against the faces 3b and 4b of the slots 3 and 4. The friction forces which are then exerted between the various surfaces in contact with each other on the one hand maintain the ends 5 and 6 of the bracelet in the slots 3 and 4 and on the other hand prevent the pins 7 and 8 from moving along their axis. It can therefore be seen that, in the assembly shown, the ends 5 and 6 of the bracelet are effectively retained in the slots 3 and 4 without being pierced with holes.

Il faut noter qu'une force de traction exercée sur les extrémités 5 et 6 du bracelet a en général tendance à soulever les goupilles 7 et 8 du fond des rainures 9 et 10, ce qui a pour effet d'augmenter la force de frottement des extrémités 5 et 6 du bracelet contre ces goupilles 7 et 8 et contre les parois 3b et 4b des fentes 3 et 4, et donc d'améliorer encore la liaison du bracelet et de la carrure.It should be noted that a tensile force exerted on the ends 5 and 6 of the bracelet generally tends to lift the pins 7 and 8 from the bottom of the grooves 9 and 10, which has the effect of increasing the friction force of the ends 5 and 6 of the bracelet against these pins 7 and 8 and against the walls 3b and 4b of the slots 3 and 4, and therefore further improve the connection of the bracelet and the middle part.

Il faut également noter que, pour qu'elles puissent être retenues efficacement dans les fentes 3 et 4, les extrémités 5 et 6 du bracelet doivent bien entendu dépasser les rainures 9 et 10 lorsqu' elles sont disposées dans ces fentes 3 et 4. Ces dernières doivent donc être assez profondes, et, de préférence, les extrémités 5 et 6 du bracelet doivent être conformées de manière à venir en contact avec toute la surface des parois de fond 3c et 4c des fentes 3 et 4. C'est pour cette raison que les extrémités 5 et 6 du bracelet représentées aux figures 1 à 3 se terminent en un arc de cercle ayant sensiblement le même rayon que les parois de fond 3c et 4c des fentes 3 et 4.It should also be noted that, so that they can be effectively retained in the slots 3 and 4, the ends 5 and 6 of the bracelet must of course exceed the grooves 9 and 10 when they are arranged in these slots 3 and 4. These the latter must therefore be fairly deep, and, preferably, the ends 5 and 6 of the bracelet must be shaped so as to come into contact with the entire surface of the bottom walls 3c and 4c of the slots 3 and 4. It is for this this is because the ends 5 and 6 of the bracelet shown in FIGS. 1 to 3 end in an arc having a substantially the same radius as the bottom walls 3c and 4c of the slots 3 and 4.

Le diamètre des goupilles 7 et 8 et la profondeur des rainures 9 et 10 dépendent du matériau choisi pour les extrémités 5 et 6 du bracelet.The diameter of the pins 7 and 8 and the depth of the grooves 9 and 10 depend on the material chosen for the ends 5 and 6 of the bracelet.

Si ce matériau est très déformable, comme certains types de caoutchouc ou de matière plastique, il est préférable de donner aux goupilles 7 et 8 un diamètre supérieur à la largeur des fentes 3 et 4, et/ou aux rainures 9 et 10 une profondeur telle que, lorsque l'ensemble est monté, les axes des goupilles 7 et 8 soient situés à l'extérieur des rainures 9 et 10, c'est-à-dire qu'ils soient respectivement situés entre les faces 3a et 3b et les faces 4a et 4b.If this material is very deformable, like certain types of rubber or plastic, it is preferable to give the pins 7 and 8 a diameter greater than the width of the slots 3 and 4, and / or the grooves 9 and 10 such a depth that, when the assembly is mounted, the axes of the pins 7 and 8 are located outside the grooves 9 and 10, that is to say that they are respectively located between the faces 3a and 3b and the faces 4a and 4b.

Par contre, si le matériau choisi pour les extrémités 5 et 6 du bracelet est peu déformable, comme certains types de cuir ou de matière plastique, il peut être nécessaire de donner aux goupilles 7 et 8 un diamètre inférieur à la largeur des fentes 3 et 4, et/ou aux rainures 9 et 10 une profondeur telle que, lorsque l'ensemble est monté, les axes des goupilles 7 et 8 soient respectivement situés dans les plans des faces 3a et 4a des fentes 3 et 4, ou en dehors de ces faces.On the other hand, if the material chosen for the ends 5 and 6 of the bracelet is not very deformable, like certain types of leather or plastic, it may be necessary to give the pins 7 and 8 a diameter less than the width of the slots 3 and 4, and / or the grooves 9 and 10 a depth such that, when the assembly is mounted, the axes of the pins 7 and 8 are respectively located in the planes of the faces 3a and 4a of the slots 3 and 4, or outside these faces.

Dans tous les cas, il faut bien entendu que le diamètre des goupilles 7 et 8 soit supérieur à la profondeur des rainures 9 et 10.In all cases, it is understood that the diameter of the pins 7 and 8 is greater than the depth of the grooves 9 and 10.

Lorsque les extrémités 5 et 6 du bracelet sont réalisées en un matériau tel que certains types de caoutchouc ou de matière plastique, il peut se produire un phénomène de fluage de ce matériau en réponse aux forces de traction qui sont normalement exercées sur ces extrémités. Ce fluage peut provoquer, au bout d'un certain temps, la sortie des extrémités 5 et 6 du bracelet des fentes 3 et 4.When the ends 5 and 6 of the bracelet are made of a material such as certain types of rubber or plastic, there may be a phenomenon of creep of this material in response to the tensile forces which are normally exerted on these ends. This creep can cause, after a certain time, the exit of the ends 5 and 6 of the bracelet from the slots 3 and 4.

Ce phénomène peut être efficacement combattu en pratiquant des rainures dans les extrémités 5 et 6 du bracelet aux endroits où celles-ci sont en contact, dans l'ensemble terminé, avec les goupilles 7 et 8. De telles rainures ont été représentées en pointillé aux figures 1 et 2, avec les références 5a et 6a. Leur profondeur dépend de la matière utilisée pour les extrémités 5 et 6 du bracelet et doit être en général inférieure à la différence entre le diamètre des goupilles 7 et 8 et la profondeur des rainures 9 et 10.This phenomenon can be effectively combated by making grooves in the ends 5 and 6 of the bracelet at the places where these are in contact, in the finished assembly, with pins 7 and 8. Such grooves have been shown in dotted lines at Figures 1 and 2, with references 5a and 6a. Their depth depends on the material used for the ends 5 and 6 of the bracelet and must generally be less than the difference between the diameter of the pins 7 and 8 and the depth of the grooves 9 and 10.

Ces rainures sont réalisées de préférence sans enlever de matière aux extrémités 5 et 6 du bracelet, par exemple en déformant ces extrémités de manière permanente à l'aide d'un outil de forme adéquate appliqué avec force à l'endroit voulu. Le cas échéant, cet outil peut être chauffé pour faciliter cette déformation permanente.These grooves are preferably made without removing material at the ends 5 and 6 of the bracelet, for example by deforming these ends permanently using a tool of suitable shape applied with force at the desired location. If necessary, this tool can be heated to facilitate this permanent deformation.

La présente invention n'est pas limitée aux cas où les extrémités 5 et 6 du bracelet sont réalisées en un matériau déformable.The present invention is not limited to cases where the ends 5 and 6 of the bracelet are made of a deformable material.

Si ces extrémités 5 et 6 sont réalisées en un matériau difficilement déformable, tel qu'une matière plastique dure ou un métal, il suffit de pratiquer dans ces extrémités 5 et 6 des rainures semblables aux rainures 5a et 6a mentionnées ci-dessus mais ayant une forme et une disposition telles que, lorsque les extrémités 5 et 6 du bracelet sont engagées dans les fentes 3 et 4, elles forment avec les rainures 9 et 10 des logements cylindriques ayant un diamètre de préférence légèrement inférieur au diamètre des goupilles 7 et 8. De la sorte, ces dernières sont maintenues en place par frottement après qu'elles ont été forcées dans ces logements et, bien entendu, les extrémités 5 et 6 du bracelet sont retenues dans les fentes 3 et 4.If these ends 5 and 6 are made of a material which is difficult to deform, such as hard plastic or metal, it suffices to make grooves in these ends 5 and 6 similar to the grooves 5a and 6a mentioned above but having a shape and arrangement such that, when the ends 5 and 6 of the bracelet are engaged in the slots 3 and 4, they form with the grooves 9 and 10 cylindrical housings having a diameter preferably slightly smaller than the diameter of the pins 7 and 8. In this way, the latter are held in place by friction after they have been forced into these housings and, of course, the ends 5 and 6 of the bracelet are retained in the slots 3 and 4.

Pour des raisons esthétiques, les rainures 9 et 10 sont pratiquées, de préférence, dans les faces des fentes 3 et 4 qui, dans la montre terminée, sont situées du côté du fond de la boite. Il est évident que ces rainures 9 et 10 peuvent être également pratiquées dans les faces des fentes 3 et 4 qui, dans la montre terminée, sont situées du côté de la glace de la montre.For aesthetic reasons, the grooves 9 and 10 are preferably made in the faces of the slots 3 and 4 which, in the finished watch, are located on the side of the bottom of the box. It is obvious that these grooves 9 and 10 can also be made in the faces of the slots 3 and 4 which, in the finished watch, are located on the side of the watch glass.

De même, il est possible de pratiquer des rainures semblables aux rainures 9 et 10 dans les deux faces des fentes 3 et 4. Quatre goupilles semblables aux goupilles 7 et 8 sont alors disposées dans ces rainures, ce qui améliore encore le maintien des extrémités 5 et 6 du bracelet dans les fentes 3 et 4.Similarly, it is possible to make grooves similar to grooves 9 and 10 in the two faces of the slots 3 and 4. Four pins similar to pins 7 and 8 are then arranged in these grooves, which further improves the retention of the ends 5 and 6 of the bracelet in the slots 3 and 4.

En outre, les goupilles 7 et 8, ou les quatre goupilles mentionnées ci-dessus, peuvent ne pas être cylindriques, mais avoir une section non circulaire, par exemple ovale ou polygonale. Dans ce cas, les rainures ménagées dans les faces des fentes 3 et 4 et, le cas échéant, dans les extrémités 5 et 6 du bracelet doivent évidemment avoir une forme correspondante.In addition, the pins 7 and 8, or the four pins mentioned above, may not be cylindrical, but have a non-circular section, for example oval or polygonal. In this case, the grooves formed in the faces of the slots 3 and 4 and, where appropriate, in the ends 5 and 6 of the bracelet must obviously have a corresponding shape.

Il faut alors bien entendu que, lorsque les goupilles sont en place, leur dimension dans une direction perpendiculaire au plan des faces des fentes 3 et 4 soit supérieure à la profondeur des rainures ménagées dans ces faces.It should then be understood that, when the pins are in place, their dimension in a direction perpendicular to the plane of the faces of the slots 3 and 4 is greater than the depth of the grooves formed in these faces.

Il est évident que la présente invention peut être réalisée quelle que soit la forme de la carrure 1, et/ou si la carrure 1 ne forme qu'une seule pièce avec le fond de la boite.It is obvious that the present invention can be carried out whatever the shape of the middle part 1, and / or if the middle part 1 forms only one piece with the bottom of the box.

En outre, les parois de fond 3c et 4c des fentes 3 et 4 peuvent ne pas être en forme de portion de cylindre, comme dans les figures 1 à 3. Les fentes 3 et 4 peuvent être obtenues, par exemple, en passant une fraise d'épaisseur adéquate dans une direction perpendiculaire à la longueur du bracelet, sur toute la largeur de la carrure 1. Dans un tel cas, les parois de fond 3c et 4c sont planes et traversent la carrure 1 d'un bord à l'autre. Les trous 9a et 9b n'existent plus, et les logements des goupilles 7 et 8 sont simplement constitués par les rainures 9 et 10 qui s'étendent sur toute la largeur de la carrure 1.In addition, the bottom walls 3c and 4c of the slots 3 and 4 may not be in the form of a cylinder portion, as in FIGS. 1 to 3. The slots 3 and 4 can be obtained, for example, by passing a bur of adequate thickness in a direction perpendicular to the length of the bracelet, over the entire width of the middle 1. In such a case, the bottom walls 3c and 4c are planar and pass through the middle 1 from one edge to the other. The holes 9a and 9b no longer exist, and the housings of the pins 7 and 8 are simply constituted by the grooves 9 and 10 which extend over the entire width of the middle part 1.

D'autres formes peuvent également être données à ces parois de fond 3c et 4c des fentes 3 et 4, notamment lorsque la carrure 1 est fabriquée par moulage d'une matière plastique.Other shapes can also be given to these bottom walls 3c and 4c of the slots 3 and 4, in particular when the middle part 1 is produced by molding a plastic material.

De même, les extrémités 5 et 6 du bracelet peuvent avoir une largeur égale ou même supérieure à la largeur de la carrure 1. Le bracelet, ou au moins ses extrémités, peut aussi avoir la forme d'un cordon, par exemple cylindrique, ayant au moins une dimension transversale inférieure a l'épaisseur de la carrure 1. Dans ce cas, les logements des extrémités du bracelet peuvent être constitués par de simples trous borgnes, de section convenable, percés aux endroits voulus dans la paroi de la carrure 1.Likewise, the ends 5 and 6 of the bracelet may have a width equal to or even greater than the width of the middle part 1. The bracelet, or at least its ends, may also have the shape of a cord, for example cylindrical, having at least one transverse dimension less than the thickness of the middle part 1. In this case, the housings of the ends of the bracelet may consist of simple blind holes, of suitable section, drilled at the desired locations in the wall of the middle part 1.

En outre, la longueur des goupilles 7 et 8 peut être inférieure à la longueur totale des logements constitués par les rainures 9 et 10 et, le cas échéant, par les trous 9a et 10a, et même inférieure à la longueur des rainures 9 et 10. Dans de tels cas, les extrémités des trous 9a et 10a peuvent être fermées par des bouchons réalisés, par exemple, dans la même matière que la carrure 1. S'ils existent, ces trous peuvent aussi être borgnes, c'est-à-dire ne déboucher qu'à une de leurs extrémités dans la paroi latérale de la carrure 1.In addition, the length of the pins 7 and 8 may be less than the total length of the housings formed by the grooves 9 and 10 and, where appropriate, by the holes 9a and 10a, and even less than the length of the grooves 9 and 10 In such cases, the ends of the holes 9a and 10a can be closed by plugs made, for example, of the same material as the middle part 1. If they exist, these holes can also be blind, that is to say -did not open at one of their ends in the side wall of the middle part 1.

Enfin, les surfaces 3a et 3b, et les surfaces 4a et 4b des fentes 3 et 4 peuvent ne pas être parallèles aux plans des faces inférieure la et supérieure lb de la carrure 1, mais former avec ces plans des angles non nuls, de manière que les extrémités 5 et 6 du bracelet aient, à proximité de la carrure, une direction telle que le bracelet s'adapte bien au poignet du porteur de la montré.Finally, the surfaces 3a and 3b, and the surfaces 4a and 4b of the slots 3 and 4 may not be parallel to the planes of the lower la and upper faces 1b of the middle part 1, but form with these planes non-zero angles, so that the ends 5 and 6 of the bracelet have, near the middle, a direction such that the bracelet adapts well to the wrist of the wearer of the watch.

Ces diverses formes d'exécution de l'ensemble selon l'invention n'ont pas été représentées car leur réalisation ne présente aucune difficulté pour l'homme du métier.These various embodiments of the assembly according to the invention have not been shown because their realization presents no difficulty for the skilled person.

Claims (5)

1. Ensemble comprenant un élément de boîte de montre comportant une carrure délimitée par une face inférieure, une face supérieure et une paroi latérale, un bracelet ayant une extrémité disposée dans un premier logement ouvert dans ladite paroi latérale, et des moyens de retenue de ladite extrémité dans ledit premier logement, caractérisé par le fait que lesdits moyens de retenue comportent un deuxième logement (9, 9a, 10, 10a) ouvert, au moins partiellement, sur ledit premier logement (3, 4) et allongé dans une direction sensiblement parallèle à l'une desdites faces (la, Ib) et sensiblement perpendiculaire à la longueur dudit bracelet, et un élément de retenue allongé (7, 8) disposé dans ledit deuxième logement (9, 9a, 10, 10a) et occupant une partie dudit premier logement (3, 4).1. An assembly comprising a watch case element comprising a middle part delimited by a lower face, an upper face and a side wall, a bracelet having one end disposed in a first housing open in said side wall, and means for retaining said end in said first housing, characterized in that said retaining means comprise a second housing (9, 9a, 10, 10a) open, at least partially, on said first housing (3, 4) and elongated in a substantially parallel direction to one of said faces (la, Ib) and substantially perpendicular to the length of said bracelet, and an elongated retaining element (7, 8) disposed in said second housing (9, 9a, 10, 10a) and occupying part of said first housing (3, 4). 2. Ensemble selon la revendication 1, dans lequel ledit premier logement (3, 4) comprend une fente présentant deux faces (3a, 3b, 4a, 4b) situées respectivement du côté de ladite face inférieure (la) et de ladite face supérieure (lb) de la carrure (1) et séparées par une distance sensiblement égale à l'épaisseur de ladite extrémité (5, 6) du bracelet, caractérisé par le fait que ledit deuxième logement (9, 9a, 10, 10a) comporte une rainure (9, 10) ménagée dans une desdites faces (3a, 3b, 4a, 4b) de ladite fente (3, 4).2. The assembly of claim 1, wherein said first housing (3, 4) comprises a slot having two faces (3a, 3b, 4a, 4b) located respectively on the side of said lower face (la) and said upper face ( lb) of the middle part (1) and separated by a distance substantially equal to the thickness of said end (5, 6) of the bracelet, characterized in that said second housing (9, 9a, 10, 10a) has a groove (9, 10) formed in one of said faces (3a, 3b, 4a, 4b) of said slot (3, 4). 3. Ensemble selon la revendication 2, caractérisé par le fait que ledit deuxième logement (9, 9a, 10, 10a) comporte en outre une ouverture (9a, 10a) située dans ladite carrure (1) dans le prolongement de ladite rainure (9, 10) et débouchant dans ladite paroi latérale (lc) de la carrure (1) à son extrémité opposée à ladite rainure (9, 10).3. The assembly of claim 2, characterized in that said second housing (9, 9a, 10, 10a) further comprises an opening (9a, 10a) located in said middle (1) in the extension of said groove (9 , 10) and opening into said side wall (lc) of the middle part (1) at its end opposite to said groove (9, 10). 4. Ensemble selon la revendication 3, caractérisé par le fait qu'il comporte en outre un bouchon fermant ladite ouverture à ladite extrémité opposée à ladite rainure (9, 10).4. The assembly of claim 3, characterized in that it further comprises a plug closing said opening at said end opposite to said groove (9, 10). 5. Ensemble selon l'une des revendications 1 à 4, caractérisé par le fait que lesdits moyens de retenue comportent en outre un troisième logement (5a, 6a) ménagé dans ladite extrémité (5, 6) du bracelet en regard dudit deuxième logement (9, 10), et que ledit élément de retenue (7, 8) est également disposé dans ledit troisième logement (5a, 6a).5. Assembly according to one of claims 1 to 4, characterized in that said retaining means further comprises a third housing (5a, 6a) formed in said end (5, 6) of the bracelet opposite said second housing ( 9, 10), and that said retaining element (7, 8) is also disposed in said third housing (5a, 6a).
EP87105614A 1986-05-07 1987-04-15 Watch case and strap assembly Expired - Lifetime EP0246449B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH187286A CH667770GA3 (en) 1986-05-07 1986-05-07
CH1872/86 1986-05-07

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EP0246449B1 EP0246449B1 (en) 1990-10-24

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US (1) US4794577A (en)
EP (1) EP0246449B1 (en)
JP (1) JPS62268505A (en)
KR (1) KR870011516A (en)
BR (1) BR8702209A (en)
CH (1) CH667770GA3 (en)
DE (1) DE3765693D1 (en)

Cited By (4)

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Publication number Priority date Publication date Assignee Title
DE3725960A1 (en) * 1987-08-05 1989-02-16 Beltpatent Ag Ennetbuergen Timepiece, in particular wrist-watch
DE20115025U1 (en) * 2001-09-12 2003-02-06 Marx, Anna Klara, 52428 Jülich Wrist watch fastening has hook closure detachable by user operated release button
EP2781973A1 (en) 2013-03-19 2014-09-24 ETA SA Manufacture Horlogère Suisse System for attaching a bracelet strand to a case
EP2818942A1 (en) * 2013-06-27 2014-12-31 ETA SA Manufacture Horlogère Suisse Wristwatch with sacrificial pin

Families Citing this family (2)

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Publication number Priority date Publication date Assignee Title
US7553069B2 (en) * 2005-10-31 2009-06-30 Gibbons Roger C Systems and methods for providing a wristwatch
KR102142574B1 (en) 2014-05-07 2020-08-07 삼성전자주식회사 Wearable type device

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FR1015737A (en) * 1950-03-30 1952-10-20 Jaeger Ets Ed Improvements to watch straps
CH576760A5 (en) * 1975-06-14 1976-06-30 Rey Laurent Charles
US4432654A (en) * 1982-03-29 1984-02-21 Bulova Watch Company, Inc. Wrist watch case and metal bracelet assembly

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Publication number Priority date Publication date Assignee Title
FR1015737A (en) * 1950-03-30 1952-10-20 Jaeger Ets Ed Improvements to watch straps
CH576760A5 (en) * 1975-06-14 1976-06-30 Rey Laurent Charles
US4432654A (en) * 1982-03-29 1984-02-21 Bulova Watch Company, Inc. Wrist watch case and metal bracelet assembly

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3725960A1 (en) * 1987-08-05 1989-02-16 Beltpatent Ag Ennetbuergen Timepiece, in particular wrist-watch
DE20115025U1 (en) * 2001-09-12 2003-02-06 Marx, Anna Klara, 52428 Jülich Wrist watch fastening has hook closure detachable by user operated release button
EP2781973A1 (en) 2013-03-19 2014-09-24 ETA SA Manufacture Horlogère Suisse System for attaching a bracelet strand to a case
US9342052B2 (en) 2013-03-19 2016-05-17 Eta Sa Manufacture Horlogere Suisse System for attaching a wristlet strand to a case
EP2818942A1 (en) * 2013-06-27 2014-12-31 ETA SA Manufacture Horlogère Suisse Wristwatch with sacrificial pin

Also Published As

Publication number Publication date
CH667770GA3 (en) 1988-11-15
DE3765693D1 (en) 1990-11-29
JPS62268505A (en) 1987-11-21
BR8702209A (en) 1988-02-17
KR870011516A (en) 1987-12-24
US4794577A (en) 1988-12-27
EP0246449B1 (en) 1990-10-24

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