EP0098239A1 - Wrist watch with a strap hinged to the case - Google Patents

Wrist watch with a strap hinged to the case Download PDF

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Publication number
EP0098239A1
EP0098239A1 EP83810210A EP83810210A EP0098239A1 EP 0098239 A1 EP0098239 A1 EP 0098239A1 EP 83810210 A EP83810210 A EP 83810210A EP 83810210 A EP83810210 A EP 83810210A EP 0098239 A1 EP0098239 A1 EP 0098239A1
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EP
European Patent Office
Prior art keywords
hinge
elements
wrist watch
case
bracelet
Prior art date
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Granted
Application number
EP83810210A
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German (de)
French (fr)
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EP0098239B1 (en
Inventor
Elmar Mock
Alphonse Bron
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ETA Manufacture Horlogere Suisse SA
Ebauchesfabrik ETA AG
Original Assignee
ETA Manufacture Horlogere Suisse SA
Ebauchesfabrik ETA AG
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Application filed by ETA Manufacture Horlogere Suisse SA, Ebauchesfabrik ETA AG filed Critical ETA Manufacture Horlogere Suisse SA
Publication of EP0098239A1 publication Critical patent/EP0098239A1/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
    • 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
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
    • A44C5/14—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps characterised by the way of fastening to a wrist-watch or the like
    • 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
    • G04B37/22—Materials or processes of manufacturing pocket watch or wrist watch cases
    • G04B37/225—Non-metallic cases

Definitions

  • the present invention relates to wristwatches, the strap of which is attached to the watch case by hinges.
  • joint means a joint connecting two parts and comprising at least a first element fixed to one of the parts, at least a second element fixed to the other part and at least a third element forming the axis of the joint.
  • French patent 2,251,291 discloses a wristwatch of this type, the hinges of which are each formed by an element integral with the watch case, by two elements integral with the bracelet and spaced from one another, these elements framing the element secured to the housing, and by a pin simultaneously passing through these three elements and forming a hinge pin.
  • each hinge has only one element integral with the watch case, this element occupying the space remaining between the two elements integral with the bracelet.
  • the hinge element secured to the watch case will therefore suffer from the pin forming an axis. of articulation, not only tensile stresses orthogonal to the axis of this pin, but also torsional stresses centered in the middle of said pin.
  • This known construction is therefore not applicable to watch cases made of plastic, the latter material generally having poor resistance to torsional stresses.
  • Swiss Patent No. 405,170 describes a wristwatch, the bracelet of which is formed from a plurality of rigid elements, presumably metallic, which are each kept in contact with a neighboring rigid element and non-rigidly connected with it. latest.
  • the terminal elements, adjacent to the watch case, of this strap are welded to said case and are attached to neighboring strap elements by means of a pin.
  • Such a construction which therefore does not use hinges as defined above, is also not applicable to a plastic housing.
  • the terminal elements of the bracelet welded to the watch case are subjected to mechanical torsional stresses on the part of the immediately adjacent bracelet elements with which they are non-rigidly connected and with which they are kept in contact.
  • an object of the present invention is to provide a wristwatch whose hinges connecting the strap to the watch case are compatible with the use of watch case made of plastic.
  • each hinge comprises at least three first mutually spaced elements coming from a single piece with the middle part, and at least two second elements integral with the bracelet and each occupying a space remaining between two first neighboring elements.
  • the first elements are practically subjected, on the part of the articulation axis of the hinge, only to tensile stresses orthogonal to said axis.
  • each hinge comprises four first hinge elements come in one piece with the middle part of the watch case, and three second hinge elements come in one piece with the half-strap adjacent to said hinge, all these elements being pierced with a hole opening at both ends, these holes being arranged in alignment and being crossed by a rectilinear axis, this axis being driven into the holes of the second elements, while it is engaged with play in the holes of the first hinge elements.
  • the wristwatch shown in the drawings comprises a watch case 1 and a strap of which only a half-strap 2 has been shown.
  • the case 1 comprises a base 3a, a middle part 3b and a crystal 4.
  • the base 3a and the middle part 3b of the housing 1 are in one piece 3, hereinafter called the housing body, made of plastic.
  • the crystal 4 is, in this example, made of a transparent plastic material and it is fixed to the middle part 3b in a sealed manner.
  • the housing body 3 one of the following three plastics: that which is known by the name ABS (acryl butadiene styrene), that which is known by the name ASA (acryl styrene acryl-ester) and that which is known under the name SAN (styrene acryl nitrile), and the lens 4 can be made of a transparent acrylic resin such as that which is known under the trade name Plexiglas.
  • the half-bracelet 2 can be made either of elastomer or of a plastic material such as PVC (potassium chloride).
  • the half-strap 2 is attached to the watch case 1 by a hinge 5.
  • the hinge 5 comprises four first elements 6 formed by molding with the case body 3, these elements 6 being arranged spaced apart and each being drilled with a hole 7 of circular section, opening at its two ends, the holes 7 all having the same diameters and being mutually aligned.
  • the hinge 5 further comprises three second elements 8 coming in one piece with the bracelet 2, each element 8 being respectively engaged in a space 9 remaining between two first elements 6 neighbors.
  • Each element 8 is pierced with a hole 10 of circular section, opening at both ends; the holes 10 are aligned with each other and, when the elements 8 are placed in the spaces 9, they are also aligned with the holes 7 of the first hinge elements 6.
  • a rectilinear metal rod 11 of circular cross-section passes through the holes 7 and 10 aligned, to constitute the axis of articulation of the hinge. In order to avoid the application of any tangential stress on the first hinge elements 6, the rod 11 is driven into the holes 10, while it is engaged freely in the holes 7.
  • a cover wall 3c sized to cover, in top view, said elements.
  • the cover wall 3c molded with the housing body 3, interconnects the first hinge elements 6 and thus contributes to improving the mechanical strength of the latter.
  • the cover wall 3c has a free edge 3d situated opposite the center 1a of the watch case 1. This free edge 3d is substantially flush with the end 6a, opposite the center 1a of the watch case, of the hinge elements 6.
  • each second hinge element 8 has, transverse to the hole 10, a straight section whose periphery consists of a first part in an arc 12 centered on the axis of rotation geometric 5a of the hinge 5, of a rectilinear part 13 substantially perpendicular to the general plane 2a of the half-strap 2, of a second part in an arc 14 also centered on the axis 5a, and of a second part plane 15 constituting the extension of the lower face 2b of the half-strap 2.
  • the lower face 2b is that which is intended to be in contact with the wrist of the wearer of the wristwatch.
  • the first part in an arc 12 has a radius R substantially equal to the distance between the geometric axis 5a of the hinge 5 and the free edge 3d of the cover wall 3c. Thanks to this particular dimensioning, the unsightly presence of a space remaining between the elements 8 and the 3d edge is avoided.
  • the first part in an arc 12 is connected by a regular curve 16 with the upper face 2c of the half-bracelet 2. At its opposite end, the part in arc 12 is connected to the substantially rectilinear part 13.
  • the second part in an arc 14 has a radius r smaller than that R of the part 12. This radius r is substantially equal to the distance existing between the geometric axis 5a of the hinge 5 and a face 17 of the middle part 3b, face delimiting, in the direction of the center of the housing 1, each space 9.
  • the second part in an arc 14 is connected, on the one hand, to the first rectilinear part 13 and, on the other hand, to the second part straight line 15 of the cross section of an element 8. These straight parts 13 and 15 are spaced from the geometric axis 5a by a distance substantially equal to r.
  • the two parts in an arc 12 and 14 of the section of an element 8 each have an angular opening substantially equal to 90 degrees.
  • the half-strap 2 can be pivoted relative to the watch case 1 by a maximum angle of 90 degrees, since a first extreme position shown in FIGS. 1 and 2, position for which the half-bracelet 2 extends parallel to the general plane 1b of the case 1 and substantially in its alignment, as far as a second extreme position shown in FIG. 4, for which the half-bracelet 2 extends substantially perpendicular to said general plane 1b.
  • the half-strap 2 is stopped in its first extreme position by the flat face 13 (determined by the cross-section part 13), this flat face coming into abutment with the face 17.
  • the second extreme angular position of the half-strap 2 is stopped by the flat face 15 (determined by the straight section part 15), this flat face coming into abutment with the face 17.
  • the invention is not limited to the embodiment which has just been described with reference to Figures 1 to 4 but it extends, on the contrary, to any other embodiment falling within the scope of the principle defined by the claims appended to this description.
  • the axis 11 could not be driven into the holes 10 of the hinge elements 8 but simply be held axially in these holes 10, by any suitable means.
  • the axis 11 may, for example, have, in its sections housed in the holes 10, a diameter less than that of its sections engaged in the holes 7 of the first hinge elements 6.
  • the holes 10 have a diameter less than that of said sections of the axis 11, the annular recesses thus produced between the parts of different diameters of the axis 11 serve as means axially stopping said axis 11 relative to the second hinge elements 8.

Abstract

A wrist watch has a bracelet connected to the watch casing by hinges. Each hinge comprises four lugs which are formed in one piece with the peripheral casing portion and rim portion of the casing, the lugs defining therebetween three spaces which are each occupied by one of three hinge elements provided at one end of the adjacent bracelet half. The casing is made of plastics material. A metal pivot pin extends through holes formed in the elements.

Description

La présente invention concerne les montres-bracelets dont le bracelet est attaché au boîtier de montre par des charnières.The present invention relates to wristwatches, the strap of which is attached to the watch case by hinges.

On entend par "charnière" une articulation reliant deux pièces et comprenant au moins un premier élément fixé sur l'une des pièces, au moins un deuxième élément fixé sur l'autre pièce et au moins un troisième élément formant axe de l'articulation.The term "hinge" means a joint connecting two parts and comprising at least a first element fixed to one of the parts, at least a second element fixed to the other part and at least a third element forming the axis of the joint.

Par le brevet français 2,251,291 on connaît une montre-bracelet de ce type dont les charnières sont formées chacune par un élément solidaire du boîtier de la montre, par deux éléments solidaires du bracelet et espacés l'un de l'autre, ces éléments encadrant l'élément solidaire du boîtier, et par une goupille traversant simultanément ces trois éléments et formant axe d'articulation.French patent 2,251,291 discloses a wristwatch of this type, the hinges of which are each formed by an element integral with the watch case, by two elements integral with the bracelet and spaced from one another, these elements framing the element secured to the housing, and by a pin simultaneously passing through these three elements and forming a hinge pin.

Ainsi, dans cette construction connue, chaque charnière ne comporte qu'un seul élément solidaire du boîtier de montre, cet élément occupant l'espacement subsistant entre les deux éléments solidaires du bracelet. L'élément de charnière solidaire du boîtier de montre va donc subir de la part de la goupille formant axe d'articulation, non seulement des contraintes de traction orthogonales à l'axe de cette goupille, mais également des contraintes de torsion centrées au milieu de ladite goupille. Cette construction connue n'est donc pas appliquable à des boîtiers de montres en matière plastique, cette dernière matière présentant généralement une mauvaise tenue aux contraintes de torsion.Thus, in this known construction, each hinge has only one element integral with the watch case, this element occupying the space remaining between the two elements integral with the bracelet. The hinge element secured to the watch case will therefore suffer from the pin forming an axis. of articulation, not only tensile stresses orthogonal to the axis of this pin, but also torsional stresses centered in the middle of said pin. This known construction is therefore not applicable to watch cases made of plastic, the latter material generally having poor resistance to torsional stresses.

Par ailleurs, le brevet suisse no 405,170 décrit une montre-bracelet dont le bracelet est formé d'une pluralité d'éléments rigides, vraisemblablement métalliques, qui sont maintenus chacun en contact avec un élément rigide voisin et reliés de façon non-rigide avec ce dernier. Les éléments terminaux, adjacents au boîtier de montre, de ce bracelet sont soudés audit boîtier et sont attachés aux éléments de bracelet voisins au moyen d'une goupille. Une telle construction, qui n'utilise donc pas des charnières telles que définies ci-dessus, n'est pas, elle non plus, applicable à un boîtier en matière plastique. En effet, les éléments terminaux du bracelet soudés au boîtier de montre sont soumis à des contraintes mécaniques de torsion de la part des éléments de bracelet immédiatement voisins avec lesquels ils sont reliés de façon non-rigide et avec lesquels ils sont maintenus en contact.Furthermore, Swiss Patent No. 405,170 describes a wristwatch, the bracelet of which is formed from a plurality of rigid elements, presumably metallic, which are each kept in contact with a neighboring rigid element and non-rigidly connected with it. latest. The terminal elements, adjacent to the watch case, of this strap are welded to said case and are attached to neighboring strap elements by means of a pin. Such a construction, which therefore does not use hinges as defined above, is also not applicable to a plastic housing. In fact, the terminal elements of the bracelet welded to the watch case are subjected to mechanical torsional stresses on the part of the immediately adjacent bracelet elements with which they are non-rigidly connected and with which they are kept in contact.

C'est pourquoi un objet de la présente invention est de fournir une montre-bracelet dont les charnières reliant le bracelet au boîtier de la montre sont compatibles avec l'utilisation de boîtier de montre réalisé en matière plastique.This is why an object of the present invention is to provide a wristwatch whose hinges connecting the strap to the watch case are compatible with the use of watch case made of plastic.

Conformément à l'invention, au moins la carrure du boîtier est réalisée en matière plastique, et chaque charnière comprend au moins trois premiers éléments mutuellement espacés et venus d'une seule pièce avec la carrure, et au moins deux seconds éléments solidaires du bracelet et occupant chacun un espace subsistant entre deux premiers éléments voisins.According to the invention, at least the case middle is made of plastic, and each hinge comprises at least three first mutually spaced elements coming from a single piece with the middle part, and at least two second elements integral with the bracelet and each occupying a space remaining between two first neighboring elements.

Grâce à cette construction, les premiers éléments ne sont pratiquement soumis, de la part de l'axe d'articulation de la charnière, qu'à des contraintes de traction orthogonales audit axe.Thanks to this construction, the first elements are practically subjected, on the part of the articulation axis of the hinge, only to tensile stresses orthogonal to said axis.

Selon un mode de réalisation actuellement préféré, chaque charnière comprend quatre premiers éléments de charnière venus d'une seule pièce avec la carrure du boîtier de montre, et trois seconds éléments de charnière venus d'une seule pièce avec le demi-bracelet adjacent à ladite charnière, tous ces éléments étant percés d'un trou débouchant aux deux extrémités, ces trous étant disposés en alignement et étant traversés par un axe rectiligne, cet axe étant chassé dans les trous des seconds éléments, tandis qu'il est engagé avec jeu dans les trous des premiers éléments de charnière.According to a currently preferred embodiment, each hinge comprises four first hinge elements come in one piece with the middle part of the watch case, and three second hinge elements come in one piece with the half-strap adjacent to said hinge, all these elements being pierced with a hole opening at both ends, these holes being arranged in alignment and being crossed by a rectilinear axis, this axis being driven into the holes of the second elements, while it is engaged with play in the holes of the first hinge elements.

Les caractéristiques et avantages de l'invention seront mieux compris à la lecture de la description qui va suivre d'un mode de réalisation, description faite en référence aux dessins annexés dans lesquels :

  • - la figure 1 est une vue partielle de dessous d'une montre-bracelet selon un mode de réalisation de l'invention;
  • - la figure 2 est une vue partielle en élévation et en coupe verticale selon le plan A-A de la figure 1;
  • - la figure 3 est une vue analogue à la figure 2 montrant une seconde position angulaire du demi-bracelet par rapport au boîtier; et
  • - la figure 4 est une vue analogue à la figure 2 montrant une troisième position angulaire du demi-bracelet par rapport au boîtier.
The characteristics and advantages of the invention will be better understood on reading the description which follows of an embodiment, description made with reference to the accompanying drawings in which:
  • - Figure 1 is a partial bottom view of a wristwatch according to an embodiment of the invention;
  • - Figure 2 is a partial view in elevation and in vertical section along the plane AA of Figure 1;
  • - Figure 3 is a view similar to Figure 2 showing a second angular position of the half-strap relative to the housing; and
  • - Figure 4 is a view similar to Figure 2 showing a third angular position of the half-strap relative to the housing.

La montre-bracelet représentée sur les dessins comprend un boîtier de montre 1 et un bracelet dont seul un demi-bracelet 2 a été représenté. Le boîtier 1 comprend un fond 3a, une carrure-lunette 3b et une glace 4.The wristwatch shown in the drawings comprises a watch case 1 and a strap of which only a half-strap 2 has been shown. The case 1 comprises a base 3a, a middle part 3b and a crystal 4.

Selon le présent exemple, le fond 3a et la carrure-lunette 3b du boîtier 1 sont en une seule pièce 3, ci-après dénommée corps de boîtier, réalisée en matière plastique. La glace 4 est, dans cet exemple, réalisée en une matière plastique transparente et elle est fixée sur la carrure-lunette 3b de façon étanche.According to the present example, the base 3a and the middle part 3b of the housing 1 are in one piece 3, hereinafter called the housing body, made of plastic. The crystal 4 is, in this example, made of a transparent plastic material and it is fixed to the middle part 3b in a sealed manner.

Avantageusement, on utilise pour réaliser le corps de boîtier 3, l'une des trois matières plastiques suivantes : celle qui est connue sous la dénomination ABS (acryl butadiène styrène), celle qui est connue sous la dénomination ASA (acryl styrène acryl-ester) et celle qui est connue sous la dénomination SAN (styrène acryl nitrile), et la glace 4 peut être réalisée en une résine acrylique transparente telle que celle qui est connue sous la dénomination commerciale Plexiglas. Le demi-bracelet 2 peut être réalisé soit en élastomère, soit en une matière plastique telle que le PVC (chlorure de potyvinyte).Advantageously, one uses to make the housing body 3, one of the following three plastics: that which is known by the name ABS (acryl butadiene styrene), that which is known by the name ASA (acryl styrene acryl-ester) and that which is known under the name SAN (styrene acryl nitrile), and the lens 4 can be made of a transparent acrylic resin such as that which is known under the trade name Plexiglas. The half-bracelet 2 can be made either of elastomer or of a plastic material such as PVC (potassium chloride).

Comme on peut le voir sur les dessins, le demi-bracelet 2 est attaché au boîtier de montre 1 par une charnière 5. La charnière 5 comprend quatre premiers éléments 6 venus de moulage avec le corps de boîtier 3, ces éléments 6 étant disposés de façon espacée et étant chacun perçé d'un trou 7 de section circulaire, débouchant à ses deux extrémités, les trous 7 étant tous de mêmes diamètres et étant mutuellement alignés. La charnière 5 comprend, en outre, trois seconds éléments 8 venus d'une seule pièce avec le bracelet 2, chaque élément 8 étant respectivement engagé dans un espace 9 subsistant entre deux premiers éléments 6 voisins. Chaque élément 8 est percé d'un trou 10 de section circulaire, débouchant aux deux extrémités; les trous 10 sont alignés entre eux et, lorsque les éléments 8 sont mis en place dans les espaces 9, ils sont également alignés avec les trous 7 des premiers éléments de charnière 6. Une tige métallique rectiligne 11 de section circulaire traverse les trous 7 et 10 alignés, pour constituer l'axe d'articulation de la charnière. Afin d'éviter l'application de toute contrainte tangentielle sur les premiers éléments de charnière 6, la tige 11 est chassée dans les trous 10, tandis qu'elle est engagée libre dans les trous 7.As can be seen in the drawings, the half-strap 2 is attached to the watch case 1 by a hinge 5. The hinge 5 comprises four first elements 6 formed by molding with the case body 3, these elements 6 being arranged spaced apart and each being drilled with a hole 7 of circular section, opening at its two ends, the holes 7 all having the same diameters and being mutually aligned. The hinge 5 further comprises three second elements 8 coming in one piece with the bracelet 2, each element 8 being respectively engaged in a space 9 remaining between two first elements 6 neighbors. Each element 8 is pierced with a hole 10 of circular section, opening at both ends; the holes 10 are aligned with each other and, when the elements 8 are placed in the spaces 9, they are also aligned with the holes 7 of the first hinge elements 6. A rectilinear metal rod 11 of circular cross-section passes through the holes 7 and 10 aligned, to constitute the axis of articulation of the hinge. In order to avoid the application of any tangential stress on the first hinge elements 6, the rod 11 is driven into the holes 10, while it is engaged freely in the holes 7.

Dans le but de dissimuler les éléments de charnière 6 et 8, on prévoit sur la carrure-lunette 3b, du côté de la glace 4, une paroi de couverture 3c dimensionnée pour recouvrir, en vue de dessus, lesdits éléments.In order to conceal the hinge elements 6 and 8, there is provided on the middle part 3b, on the side of the glass 4, a cover wall 3c sized to cover, in top view, said elements.

La paroi de couverture 3c, venue de moulage avec le corps de boîtier 3, relie entre eux les premiers éléments de charnière 6 et contribue ainsi à améliorer la tenue mécanique de ces derniers. La paroi de couverture 3c présente un bord libre 3d situé à l'opposé du centre 1a du boîtier de montre 1. Ce bord libre 3d affleure sensiblement l'extrémité 6a, opposée au centre 1a du boîtier de montre, des éléments de charnière 6.The cover wall 3c, molded with the housing body 3, interconnects the first hinge elements 6 and thus contributes to improving the mechanical strength of the latter. The cover wall 3c has a free edge 3d situated opposite the center 1a of the watch case 1. This free edge 3d is substantially flush with the end 6a, opposite the center 1a of the watch case, of the hinge elements 6.

Comme on peut le voir sur les figures 2 à 4, chaque second élément de charnière 8 présente, transversalement au trou 10, une section droite dont le pourtour se compose d'une première partie en arc de cercle 12 centrée sur l'axe de rotation géométrique 5a de la charnière 5, d'une partie rectiligne 13 sensiblement perpendiculaire au plan général 2a du demi-bracelet 2, d'une seconde partie en arc de cercle 14 également centrée sur l'axe 5a, et d'une seconde partie plane 15 constituant le prolongement de la face inférieure 2b du demi-bracelet 2. La face inférieure 2b est celle qui est destinée à être en contact avec le poignet du porteur de la montre-bracelet.As can be seen in Figures 2 to 4, each second hinge element 8 has, transverse to the hole 10, a straight section whose periphery consists of a first part in an arc 12 centered on the axis of rotation geometric 5a of the hinge 5, of a rectilinear part 13 substantially perpendicular to the general plane 2a of the half-strap 2, of a second part in an arc 14 also centered on the axis 5a, and of a second part plane 15 constituting the extension of the lower face 2b of the half-strap 2. The lower face 2b is that which is intended to be in contact with the wrist of the wearer of the wristwatch.

La première partie en arc de cercle 12 présente un rayon R sensiblement égal à la distance séparant l'axe géométrique 5a de la charnière 5 et le bord libre 3d de la paroi de couverture 3c. Grâce à ce dimensionnement particulier, on évite la présence inesthétique d'un espace subsistant entre les éléments 8 et le bord 3d. La première partie en arc de cercle 12 se raccorde par une courbe régulière 16 avec la face supérieure 2c du demi-bracelet 2. A son extrémité opposée, la partie en arc de cercle 12 se raccorde à la partie sensiblement rectiligne 13.The first part in an arc 12 has a radius R substantially equal to the distance between the geometric axis 5a of the hinge 5 and the free edge 3d of the cover wall 3c. Thanks to this particular dimensioning, the unsightly presence of a space remaining between the elements 8 and the 3d edge is avoided. The first part in an arc 12 is connected by a regular curve 16 with the upper face 2c of the half-bracelet 2. At its opposite end, the part in arc 12 is connected to the substantially rectilinear part 13.

La seconde partie en arc de cercle 14 présente rayon r plus faible que celui R de la partie 12. Ce rayon r est sensiblement égal à la distance existant entre l'axe géométrique 5a de la charnière 5 et une face 17 de la carrure 3b, face délimitant, dans la direction du centre la du boîtier 1, chaque espace 9. La seconde partie en arc de cercle 14 se raccorde, d'une part, à la première partie rectiligne 13 et, d'autre part, à la seconde partie rectiligne 15 de la section droite d'un élément 8. Ces parties rectilignes 13 et 15 sont espacées de l'axe géométrique 5a d'une distance sensiblement égale à r. Enfin, selon l'exemple représenté, les deux parties en arc de cercle 12 et 14 de la section d'un élément 8 présentent chacune une ouverture angulaire sensiblement égale à 90 degrés.The second part in an arc 14 has a radius r smaller than that R of the part 12. This radius r is substantially equal to the distance existing between the geometric axis 5a of the hinge 5 and a face 17 of the middle part 3b, face delimiting, in the direction of the center of the housing 1, each space 9. The second part in an arc 14 is connected, on the one hand, to the first rectilinear part 13 and, on the other hand, to the second part straight line 15 of the cross section of an element 8. These straight parts 13 and 15 are spaced from the geometric axis 5a by a distance substantially equal to r. Finally, according to the example shown, the two parts in an arc 12 and 14 of the section of an element 8 each have an angular opening substantially equal to 90 degrees.

Grâce à cette conformation particulière des éléments de charnière 8 et à celle, représentée sur les dessins, des parois délimitant les espaces 9, le demi-bracelet 2 peut être pivoté par rapport au boîtier de montre 1 d'un angle maximal de 90 degrés, depuis une première position extrême représentée sur les figures 1 et 2, position pour laquelle le demi-bracelet 2 s'étend parallèlement au plan général 1b du boîtier 1 et sensiblement dans son alignement, jusque dans une seconde position extrême représentée sur la figure 4, pour laquelle le demi-bracelet 2 s'étend sensiblement perpendiculairement audit plan général 1b. Le demi-bracelet 2 est arrêté dans sa première position extrême par la face plane 13 (déterminée par la partie de section droite 13), cette face plane entrant en butée avec la face 17. La seconde position angulaire extrême du demi-bracelet 2 est arrêtée par la face plane 15 (déterminée par la partie de section droite 15), cette face plane entrant en butée avec la face 17.Thanks to this particular conformation of the hinge elements 8 and to that, shown in the drawings, of the walls delimiting the spaces 9, the half-strap 2 can be pivoted relative to the watch case 1 by a maximum angle of 90 degrees, since a first extreme position shown in FIGS. 1 and 2, position for which the half-bracelet 2 extends parallel to the general plane 1b of the case 1 and substantially in its alignment, as far as a second extreme position shown in FIG. 4, for which the half-bracelet 2 extends substantially perpendicular to said general plane 1b. The half-strap 2 is stopped in its first extreme position by the flat face 13 (determined by the cross-section part 13), this flat face coming into abutment with the face 17. The second extreme angular position of the half-strap 2 is stopped by the flat face 15 (determined by the straight section part 15), this flat face coming into abutment with the face 17.

Bien entendu, l'invention ne se limite pas au mode de réalisation qui vient d'être décrit en référence aux figures 1 à 4 mais elle s'étend, au contraire, à tout autre mode de réalisation entrant dans le cadre du principe défini par les revendications annexées à la présente description. En particulier, l'axe 11 pourrait ne pas être chassé dans les trous 10 des éléments de charnière 8 mais être simplement maintenu axialement dans ces trous 10, par tout moyen approprié. L'axe 11 peut, par exemple, présenter, dans ses tronçons logés dans les trous 10, un diamètre inférieur à celui de ses tronçons engagés dans les trous 7 des premiers éléments de charnière 6. Si, de plus, les trous 10 présentent un diamètre inférieur à celui desdits tronçons de l'axe 11, les décrochements annulaires ainsi réalisés entre les parties de différents diamètres de l'axe 11 servent de moyens arrêtant axialement ledit axe 11 par rapport aux seconds éléments de charnière 8.Of course, the invention is not limited to the embodiment which has just been described with reference to Figures 1 to 4 but it extends, on the contrary, to any other embodiment falling within the scope of the principle defined by the claims appended to this description. In particular, the axis 11 could not be driven into the holes 10 of the hinge elements 8 but simply be held axially in these holes 10, by any suitable means. The axis 11 may, for example, have, in its sections housed in the holes 10, a diameter less than that of its sections engaged in the holes 7 of the first hinge elements 6. If, in addition, the holes 10 have a diameter less than that of said sections of the axis 11, the annular recesses thus produced between the parts of different diameters of the axis 11 serve as means axially stopping said axis 11 relative to the second hinge elements 8.

Claims (10)

1. Montre-bracelet comportant : - un boîtier de montre (1) comprenant un fond (3a), une carrure (3b) et une glace (4), et - un bracelet comprenant deux demi-bracelets (2) attachés chacun, par une première extrémité, audit boîtier (1) au moyen d'une charnière (5) et ayant chacun une face intérieure (2b) destinée à être en contact avec le poignet d'un porteur de la montre et une face extérieure (2c) opposée à ladite face inférieure, chacune desdites charnières comprenant : a) au moins un premier élément (6) fixé audit boîtier (1), cet élément étant perçé d'un premier trou (7) débouchant aux extrémités, b) au moins un second élément (8) fixé sur ladite première extrémité du demi-bracelet (2), ce second élément étant perçé d'un second trou (10)- débouchant aux deux extrémités, et c) un axe d'articulation (11) engagé simultanément dans lesdits premiers et second trous,caractérisée en ce qu'au moins ladite carrure (3b) du boîtier (1) est réalisée en matière plastique, et en ce que ladite charnière (5) comprend n premiers éléments (6) venus d'une seule pièce avec la carrure (3b) et disposés de telle sorte que subsiste un espacement (9) entre deux premiers éléments voisins, et au moins n - 1 seconds éléments (8) engagés chacun respectivement dans l'un desdits espacements (9), n étant un entier au moins égal à 3.1. Wrist watch comprising: a watch case (1) comprising a back (3a), a middle part (3b) and a crystal (4), and - a bracelet comprising two half-bracelets (2) each attached by a first end to said case (1) by means of a hinge (5) and each having an inner face (2b) intended to be in contact with the wrist of a watch wearer and an outer face (2c) opposite to said lower face, each of said hinges comprising: a) at least a first element (6) fixed to said housing (1), this element being drilled with a first hole (7) opening at the ends, b) at least one second element (8) fixed to said first end of the half-bracelet (2), this second element being pierced by a second hole (10) - opening at both ends, and c) a hinge pin (11) engaged simultaneously in said first and second holes, characterized in that at least said middle part (3b) of the housing (1) is made of plastic, and in that said hinge (5) comprises n first elements (6) coming in one piece with the middle part (3b ) and arranged so that there remains a spacing (9) between two first neighboring elements, and at least n - 1 second elements (8) each engaged respectively in one of said spacings (9), n being an integer at least equal to 3. 2. Montre-bracelet selon la revendication 1, caractérisée en ce que ledit axe d'articulation (11) est engagé libre dans lesdits premiers trous (7) tandis qu'il est maintenu axialement par rapport aux seconds éléments de charnière (8).2. Wrist watch according to claim 1, characterized in that said hinge pin (11) is engaged freely in said first holes (7) while it is held axially relative to the second hinge elements (8). 3. Montre-bracelet selon la revendication 2, caractérisée en ce que ledit axe d'articulation (11) est chassé dans au moins l'un desdits seconds trous (10).3. Wrist watch according to claim 2, characterized in that said hinge pin (11) is driven into at least one of said second holes (10). 4. Montre-bracelet selon l'une des revendications 1 à 3, caractérisée en ce que lesdits premiers éléments de charnière (6) sont reliés entre eux par une paroi de couverture (3c) venue d'une seule pièce avec la carrure (3b) , cette paroi étant située du côté de la glace (4) et étant dimensionnée de manière à recouvrir, en vue de dessus, lesdits premiers éléments de charnière (6).4. Wrist watch according to one of claims 1 to 3, characterized in that said first hinge elements (6) are interconnected by a cover wall (3c) integrally formed with the middle part (3b ), this wall being located on the side of the glass (4) and being dimensioned so as to cover, in top view, said first hinge elements (6). 5. Montre-bracelet selon la revendication 4, caractérisée en ce que ladite paroi de couverture (3c) présente un bord libre (3b) situé à l'opposé du centre (la) dudit boîtier de montre (1), en ce que chacun desdits seconds éléments de charnière (8) présente, transversalement au second trou (10), une section droite dont le pourtour présente, du côté adjacent à ladite face extérieure (2c) du demi-bracelet (2), une première partie en arc de cercle (12) centrée sur l'axe de rotation géométrique (5a) de la charnière (5) et ayant sensiblement pour rayon (R) la distance entre ledit axe de rotation et ledit bord libre (3d) de ladite paroi de courverture (3c), en ce qu'au moins l'un desdits seconds éléments (8) présente en outre des moyens de butée (13, 15) coopérant avec des moyens de contre-butée (17) du boîtier de montre (1) pour déterminer une première et une seconde position extrême de rotation du demi-bracelet (2) par rapport au boîtier (1), ces deux positions extrêmes étant espacées angulairement l'une de l'autre d'un certain angle, et en ce que ledit arc de cercle (12) présente un angle d'ouverture au moins égal audit certain angle.5. Wrist watch according to claim 4, characterized in that said cover wall (3c) has a free edge (3b) located opposite the center (la) of said watch case (1), in that each said second hinge elements (8) has, transverse to the second hole (10), a straight section whose periphery has, on the side adjacent to said outer face (2c) of the half-strap (2), a first arcuate part of circle (12) centered on the geometric axis of rotation (5a) of the hinge (5) and having substantially as radius (R) the distance between said axis of rotation and said free edge (3d) of said wall of curvature (3c ), in that at least one of said second elements (8) also has stop means (13, 15) cooperating with counter-stop means (17) of the watch case (1) to determine a first and a second extreme position of rotation of the half-bracelet (2) relative to the case (1), these two extreme positions being angularly spaced from each other by a certain angle, and in that said arc of circle ( 12) has an opening angle at least equal to said certain angle. 6. Montre-bracelet selon la revendication 1, caractérisée en ce que n est égal à 4.6. Wrist watch according to claim 1, characterized in that n is equal to 4. 7. Montre-bracelet selon la revendication 1, caractérisée en ce que ledit fond (3a) et ladite carrure (3b) du boîtier de montre (1) forment une seule pièce (3) en matière plastique.7. Wristwatch according to claim 1, characterized in that said base (3a) and said middle part (3b) of the watch case (1) form a single piece (3) of plastic. 8. Montre-bracelet selon l'une des revendications 1 à 7, caractérisée en ce que ladite carrure (3b) est réalisée dans l'une des matières plastiques suivantes : ABS (acryl butadiène styrène), ASA (acryl styrène acrylester), et SAN (styrène acryl nitrile).8. Wristwatch according to one of claims 1 to 7, characterized in that said middle part (3b) is made of one of the following plastics: ABS (acryl butadiene styrene), ASA (acryl styrene acrylester), and SAN (styrene acryl nitrile). 9. Montre-bracelet selon l'une des revendications 1 à 8, caractérisée en ce que la glace 4 du boîtier de montre 1 est réalisée en matière plastique et elle est fixée de façon étanche sur ladite carrure (3b).9. Wrist watch according to one of claims 1 to 8, characterized in that the crystal 4 of the watch case 1 is made of plastic and it is fixed in leaktight manner on said middle (3b). 10. Montre-bracelet selon l'une des revendications 1 à 9, caractérisée en ce que lesdits seconds éléments de charnière (8) sont venus d'une seule pièce avec le demi-bracelet (2).10. Wrist watch according to one of claims 1 to 9, characterized in that said second hinge elements (8) came in one piece with the half-strap (2).
EP83810210A 1982-06-11 1983-05-17 Wrist watch with a strap hinged to the case Expired EP0098239B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH362082A CH647917GA3 (en) 1982-06-11 1982-06-11
CH3620/82 1982-06-11

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Publication Number Publication Date
EP0098239A1 true EP0098239A1 (en) 1984-01-11
EP0098239B1 EP0098239B1 (en) 1987-01-14

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EP83810210A Expired EP0098239B1 (en) 1982-06-11 1983-05-17 Wrist watch with a strap hinged to the case

Country Status (7)

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US (2) US4561077A (en)
EP (1) EP0098239B1 (en)
JP (1) JPS592704A (en)
CH (1) CH647917GA3 (en)
DE (2) DE98239T1 (en)
HK (1) HK47687A (en)
SG (1) SG1690G (en)

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Also Published As

Publication number Publication date
DE3369208D1 (en) 1987-02-19
US4561077A (en) 1985-12-24
JPS592704A (en) 1984-01-09
DE98239T1 (en) 1986-06-12
HK47687A (en) 1987-06-26
SG1690G (en) 1990-08-17
CH647917GA3 (en) 1985-02-28
EP0098239B1 (en) 1987-01-14
US4624581A (en) 1986-11-25
JPS6341564B2 (en) 1988-08-17

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