EP0471834B1 - Watch with removable bracelet - Google Patents

Watch with removable bracelet Download PDF

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Publication number
EP0471834B1
EP0471834B1 EP91906593A EP91906593A EP0471834B1 EP 0471834 B1 EP0471834 B1 EP 0471834B1 EP 91906593 A EP91906593 A EP 91906593A EP 91906593 A EP91906593 A EP 91906593A EP 0471834 B1 EP0471834 B1 EP 0471834B1
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EP
European Patent Office
Prior art keywords
bracelet
sleeve
watch
case
free end
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.)
Expired - Lifetime
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EP91906593A
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German (de)
French (fr)
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EP0471834A1 (en
Inventor
Alain Boucheron
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.)
Boucheron SA
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Boucheron SA
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Publication date
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Publication of EP0471834A1 publication Critical patent/EP0471834A1/en
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Publication of EP0471834B1 publication Critical patent/EP0471834B1/en
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Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the present invention relates to a wristwatch comprising a watch, the case of which comprises at least two opposite parallel sides each provided with assembly means cooperating detachably with a metal element reinforcing a free end of a flexible bracelet.
  • the conventional technique consists in securing each free end of the bracelet with a metal element in the form of a stick provided with an axial depression in which the free end of the bracelet is folded in a loop around a mounting screws. The free end of the bracelet emerges from the depression of the metal rod to be sewn on the unexposed side of the bracelet.
  • the metal rod also has a longitudinal strip at its outer face and provided with a protuberance at its free end retractable in the rod, so as to be able to ensure a snap connection with a longitudinal groove formed in a bore on one side of the housing of the watch.
  • the bracelet thus obtained has in the vicinity of the metal end stick an excess thickness due to the end loop for assembly. This extra thickness can inconvenience the user's wrist.
  • the metal rods are made of solid metal, for example solid gold, the manufacture and mounting of which on one end of the bracelet are relatively complicated to carry out.
  • the mounting between a metal stick and the watch prevents the free rotation of the stick, and therefore of the bracelet, inside the corresponding bore of the watch, because of the design of the latching means.
  • the object of the present invention is to remedy the aforementioned drawbacks by producing a watch with a removable strap, the assembly system of which between the watch and the strap is designed in a simple and original manner.
  • the wristwatch according to the invention comprises a watch, the case of which has at least two opposite parallel sides for each seen of an assembly means cooperating detachably with a rigid element reinforcing a free end of a flexible bracelet.
  • the rigid element can be metallic and comprises an elastic tubular blade and a sleeve, one end of which is closed.
  • the tubular blade has an axial toothed slot into which a free end of the flexible bracelet is introduced.
  • the sleeve has an axial slot opening into the open end of the sleeve and the opening of which is greater than the thickness of the bracelet to allow passage of the latter.
  • the inside diameter of the sleeve is smaller than the outside diameter of the tubular blade, so that the axial introduction of the tubular blade into the sleeve requires elastic deformation of the tubular blade resulting in blockage of the free end of the bracelet by pinching the toothed axial slot.
  • the elastic tubular blade can be replaced by a jaw in substantially cylindrical form, the opening of which is longitudinal.
  • the two toothed elements of the jaw form a body together and are connected to each other by a flexible and longitudinal tongue opposite the opening of the jaw.
  • a free end of the bracelet is introduced into the jaw through the longitudinal opening, the toothed elements making it possible to retain the end of the bracelet.
  • the closed jaw is introduced axially into the sleeve in the same way as the tubular blade.
  • the assembly means of the watch case comprises a bore of diameter substantially identical to that of the sleeve.
  • the wall of the bore is traversed by an axial slot whose opening is greater than the thickness of the bracelet to allow its passage when the sleeve is mounted in the bore of the case.
  • the wristwatch according to the invention comprises a watch case 1 and a removable flexible strap 2 preferably made of leather.
  • the housing 1 has a substantially parallelepiped shape, two opposite and parallel sides 1 a and 1 b are rounded.
  • the free ends of bracelet 2 are reinforced by rigid cylindrical elements 2 a and 2 b can each cooperate with a bore made in the sides 1a and 1b of the housing 1, in a removable manner and according to arrows 3 and 4.
  • respective openings of the two bores of the housing 1 are located diametrically opposite one another.
  • Bracelet 2 is produced in the form of an elongated strip.
  • FIGS. 2 and 3 show how the rigid element 2 a is assembled at the corresponding end 5 of the strap 2.
  • the rigid element 2 a consists of an elastic tubular blade 6 and a tubular sleeve 7.
  • the tubular blade 6 has a longitudinal toothed slot 8 allowing, in the free state, the introduction of the free end 5 of the bracelet 2.
  • the sleeve 7 has an axial slot 9, a closed end 10 and a circumferential groove 11. The opening of the axial slot 9 of the sleeve 7 is larger than the thickness of the free end 5 of the bracelet 2 to allow its passage.
  • the inside diameter of the sleeve 7 must be less than the outside diameter of the elastic tubular blade 6 when it is in the free state. Such a requirement is necessary to impose an elastic deformation of the blade 6, resulting in a reduction in its cross section, during its assembly inside the sleeve 7. This elastic deformation of the tubular blade 6 results in a pinching of the toothed slot 8 on the two faces of the end part 5 of the bracelet 2 thus allowing the maintenance of the corresponding end part 5 in the rigid element 2 a .
  • the assembly of the rigid element 2 a on the free end 5 of the bracelet 2 is relatively simple.
  • the free end 5 of the bracelet 2 is first introduced into the toothed slot 8 of the elastic tubular blade 6.
  • An elastic deformation of the blade 6 is then imposed to reduce its section by means of an external force.
  • the tubular blade 6 is introduced axially with the end part 5 of the strap pinched in the toothed slot 8 inside the tubular sleeve 7 by its open end opposite the end 10.
  • the end portion 5 of the bracelet 2 slides in the axial slot 9 of the sleeve 7.
  • the elastic deformation of the tubular blade 6 is then held by the inner wall of the sleeve 7 as shown in FIG. 3.
  • the rigid element 2 a can be introduced axially into the bore 13 formed on the corresponding side 1 a of the case 1 of the watch.
  • the wall of the bore 13 is crossed by a longitudinal slot 14 on the side allowing the passage of the end part 5 of the strap 2.
  • the bore 13 ends in a bottom 15 forming part of one side of the case 1.
  • the invention provides a latching mechanism for said assembly between the case 1 of the watch and the strap 2.
  • This latching system consists firstly of the circumferential groove 11 of the sleeve 7, and of on the other hand by a retractable protuberance 16 on the inner wall of the bore 13.
  • the retractable protrusion 16 can be constituted by a ball located in a cavity 17 formed in the inner wall of the bore 13
  • a compression spring 18 embedded in the cavity 17 exerts a radial force forcing the ball 16 towards the interior of the bore 13, the position of the ball 16 on the internal wall of the bore 13 being such that the circumferential groove 11 of the sleeve 7 is located opposite the ball in the assembled position of the bracelet 2 on the case 1.
  • the ball 16 first meets the open end of the sleeve 7 and the outer wall of the corresponding end portion of the sleeve 7 which forces the ball 16 to enter towards the inside the cavity 17 due to the small clearance between the sleeve 7 and the bore 13.
  • the circumferential groove 11 of the sleeve 7 then meets the ball 16 which under the thrust of the spring 18 comes into contact with the bottom of the groove 11 thereby forming a means for blocking the axial movement of the sleeve 7 inside the bore 13. This results in safety in wearing the wristwatch of the invention on the wrist of the user.
  • the circumferential groove 11 cooperates with the ball 16 to allow free rotation of the sleeve 7 in the bore 13.
  • the sleeve 7 and the elastic tubular blade 6 are made of metallic material to improve the mechanical performance of the rigid element 2 a .
  • the closed end 10 of the sleeve 7 is preferably made of the same metal as that on the corresponding lateral side of the case 1 of the watch, so as to form a uniform surface on said side of the case when the metallic element 2 a is in assembled position relative to the side 1 a corresponding housing.
  • the visible external surface of the case 1 of the watch is advantageously made of a precious metal, such as gold.
  • the present invention allows the sleeve 7 and the tubular blade 6 to be made of a less precious metal having superior mechanical characteristics, for example stainless steel, also making it possible to reduce the manufacturing cost.
  • the closed end 10 of the sleeve 7 may have a layer of gold plated.
  • the structure of the metal element 2 a , 2 b is quick and simple to mount on the end parts of the bracelet 2 which can be of length, thickness, color, and varied appearance.
  • FIGS. 5 and 6 differs from the first embodiment previously described only by the fact that the elastic tubular blade 6 is replaced by a cylindrical jaw 20 in the rigid element 2 a .
  • the jaw 20 comprises two toothed elements 21, 22 connected to one another by a flexible longitudinal tongue 23.
  • the free end part 5 of the bracelet 2 is sandwiched between the teeth 21 a and 22 has toothed elements 21 and 22 of the jaw 20.
  • the teeth 21a and 22a enter the opposite sides of the free end portion 5 of the strap 2 to maintain it in place.
  • the jaw 20 thus closed is then introduced axially into the sleeve 7, letting the bracelet slide in the longitudinal slot 9 of the sleeve 7.
  • the elasticity of the bracelet 2 tends to spread the toothed elements 21 and 22 of the jaw 20 by pressing them down. against the inner wall of the sleeve 7 which then holds the jaw in the same way as for the elastic blade 6.
  • the jaw 20 may include at least one pin 24 on the toothed face of the toothed element 21 and at least one hole 25 for receiving the pin 24 made in the another toothed element 22.
  • the free end part 5 of the bracelet must include the number of perforations corresponding to that of pairs of tenon 24 / receiving hole 25 of the jaw 20.
  • the jaw 20 is made in one piece. It must have good mechanical strength to ensure its function.
  • it can be made of metallic material or rigid plastic.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Adornments (AREA)
  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
  • Finger-Pressure Massage (AREA)
  • Laminated Bodies (AREA)

Abstract

PCT No. PCT/FR91/00204 Sec. 371 Date Nov. 5, 1991 Sec. 102(e) Date Nov. 5, 1991 PCT Filed Mar. 13, 1991 PCT Pub. No. WO91/14212 PCT Pub. Date Sep. 19, 1991.A bracelet watch comprises a removable flexible bracelet (2), the ends (5) of which are reinforced by an elastic tubular blade (6) or a cylindrical jaw inserted into a sleeve (7) removably fitting into a drilling (13) made in one side (1a) of the case (1) of the watch. A pawl mechanism (11, 16) is fitted for this assembly system.

Description

La présente invention concerne une montre-bracelet comprenant une montre dont le boîtier comporte au moins deux côtés opposés parallèles pourvus chacun de moyens d'assemblage coopérant de façon amovible avec un élément métallique renforçant une extrémité libre d'un bracelet souple.The present invention relates to a wristwatch comprising a watch, the case of which comprises at least two opposite parallel sides each provided with assembly means cooperating detachably with a metal element reinforcing a free end of a flexible bracelet.

On connaît des montre-bracelets de ce genre (CH-A-291 881) dont l'assemblage amovible entre le bracelet et la montre permet d'associer à une montre donnée différents types de bracelets. L'interchangeabilité des bracelets enrichie l'aspect de la montre-bracelet et permet à l'utilisateur de varier notamment la couleur du bracelet associé à la montre.There are known wristwatches of this kind (CH-A-291 881), the removable assembly of which between the bracelet and the watch makes it possible to associate different types of bracelets with a given watch. The interchangeability of the straps enriches the appearance of the wristwatch and allows the user to vary in particular the color of the strap associated with the watch.

Pour assurer l'interchangeabilité des bracelets, la technique classique consiste à solidariser chaque extrémité libre du bracelet avec un élément métallique sous forme de bâtonnet pourvu d'une dépression axiale dans laquelle l'extrémité libre du bracelet est pliée en une boucle autour d'une vis de montage. L'extrémité libre du bracelet ressort de la dépression du bâtonnet métallique pour être cousue sur la face non exposée du bracelet.To ensure the interchangeability of the bracelets, the conventional technique consists in securing each free end of the bracelet with a metal element in the form of a stick provided with an axial depression in which the free end of the bracelet is folded in a loop around a mounting screws. The free end of the bracelet emerges from the depression of the metal rod to be sewn on the unexposed side of the bracelet.

Le bâtonnet métallique comporte également une lamelle longitudinale à sa face extérieure et pourvue d'une protubérance à son extrémité libre escamotable dans le bâtonnet, de façon à pouvoir assurer une liaison d'encliquetage avec une rainure longitudinale pratiquée dans un alésage sur un côté du boîtier de la montre.The metal rod also has a longitudinal strip at its outer face and provided with a protuberance at its free end retractable in the rod, so as to be able to ensure a snap connection with a longitudinal groove formed in a bore on one side of the housing of the watch.

Le bracelet ainsi obtenu présente au voisinage du bâtonnet métallique d'extrémité une surépaisseur due à la boucle d'extrémité pour l'assemblage. Cette surépaisseur peut incommoder le poignet de l'utilisateur. Les bâtonnets métalliques sont en métal massif, par exemple en or massif, dont la fabrication et le montage sur une extrémité du bracelet sont relativement compliqués à réaliser.The bracelet thus obtained has in the vicinity of the metal end stick an excess thickness due to the end loop for assembly. This extra thickness can inconvenience the user's wrist. The metal rods are made of solid metal, for example solid gold, the manufacture and mounting of which on one end of the bracelet are relatively complicated to carry out.

En outre, le montage entre un bâtonnet métallique et la montre empêche la libre rotation du bâtonnet, et donc du bracelet, à l'intérieur de l'alésage correspondant de la montre, à cause de la conception du moyen d'encliquetage.In addition, the mounting between a metal stick and the watch prevents the free rotation of the stick, and therefore of the bracelet, inside the corresponding bore of the watch, because of the design of the latching means.

La présente invention a pour objet de remédier aux inconvénients précités en réalisant une montre à bracelet amovible, dont le système d'assemblage entre la montre et le bracelet est conçu de façon simple et originale.The object of the present invention is to remedy the aforementioned drawbacks by producing a watch with a removable strap, the assembly system of which between the watch and the strap is designed in a simple and original manner.

La montre-bracelet, selon l'invention, comprend une montre dont le bottier comporte au moins deux côtés opposés parallèles pour vus chacun d'un moyen d'assemblage coopérant de façon amovible avec un élément rigide renforçant une extrémité libre d'un bracelet souple. L'élément rigide peut être métallique et comprend une lame tubulaire élastique et un manchon dont une extrémité est fermée. La lame tubulaire comporte une fente axiale dentée dans laquelle est introduite une extrémité libre du bracelet souple. Le manchon comporte une fente axiale débouchant dans l'extrémité ouverte du manchon et dont l'ouverture est plus grande que l'épaisseur du bracelet pour permettre le passage de ce dernier. Le diamètre intérieur du manchon est plus petit que le diamètre extérieur de la lame tubulaire, de telle sorte que l'introduction axiale de la lame tubulaire dans le manchon nécessite une déformation élastique de la lame tubulaire entraînant un blocage de l'extrémité libre du bracelet par pincement de la fente axiale dentée.The wristwatch according to the invention comprises a watch, the case of which has at least two opposite parallel sides for each seen of an assembly means cooperating detachably with a rigid element reinforcing a free end of a flexible bracelet. . The rigid element can be metallic and comprises an elastic tubular blade and a sleeve, one end of which is closed. The tubular blade has an axial toothed slot into which a free end of the flexible bracelet is introduced. The sleeve has an axial slot opening into the open end of the sleeve and the opening of which is greater than the thickness of the bracelet to allow passage of the latter. The inside diameter of the sleeve is smaller than the outside diameter of the tubular blade, so that the axial introduction of the tubular blade into the sleeve requires elastic deformation of the tubular blade resulting in blockage of the free end of the bracelet by pinching the toothed axial slot.

La lame tubulaire élastique peut être remplacée par une mâchoire sous forme sensiblement cylindrique dont l'ouverture est longitudinale. De préférence, les deux éléments dentés de la mâchoire font corps ensemble et sont reliés l'un à l'autre par une languette souple et longitudinale à l'opposé de l'ouverture de la mâchoire. Pour l'assemblage, une extrémité libre du bracelet est introduite dans la mâchoire par l'ouverture longitudinale, les éléments dentés permettant de retenir l'extrémité du bracelet. La mâchoire fermée est introduite axialement dans le manchon de la même manière que la lame tubulaire.The elastic tubular blade can be replaced by a jaw in substantially cylindrical form, the opening of which is longitudinal. Preferably, the two toothed elements of the jaw form a body together and are connected to each other by a flexible and longitudinal tongue opposite the opening of the jaw. For assembly, a free end of the bracelet is introduced into the jaw through the longitudinal opening, the toothed elements making it possible to retain the end of the bracelet. The closed jaw is introduced axially into the sleeve in the same way as the tubular blade.

Le moyen d'assemblage du boîtier de montre comprend un alésage de diamètre sensiblement identique à celui du manchon. La paroi de l'alésage est traversée par une fente axiale dont l'ouverture est supérieure à l'épaisseur du bracelet pour permettre son passage lorsque le manchon est monté dans l'alésage du boîtier.The assembly means of the watch case comprises a bore of diameter substantially identical to that of the sleeve. The wall of the bore is traversed by an axial slot whose opening is greater than the thickness of the bracelet to allow its passage when the sleeve is mounted in the bore of the case.

L'invention sera mieux comprise à l'étude de la description détaillée de deux modes de réalisation de l'invention pris à titre d'exemples nullement limitatifs et illustrés par les dessins annexés, sur lesquels :

  • la figure 1 est une vue d'ensemble d'une montre-bracelet amovible selon l'invention;
  • la figure 2 est une vue éclatée du système d'assemblage de l'invention;
  • la figure 3 est une vue en coupe le long du bracelet pour montrer la structure de l'élément rigide selon le premier mode de l'invention;
  • la figure 4 est une vue partielle en coupe des moyens d'encliquetage associés au boîtier de la montre selon l'invention;
  • la figure 5 est une vue en coupe radiale de l'élément rigide le long du bracelet pour montrer la structure de l'élément rigide selon le second mode de réalisation de l'invention; et
  • la figure 6 est une vue de côté de la mâchoire en position ouverte selon le second mode de réalisation de l'invention.
The invention will be better understood on studying the detailed description of two embodiments of the invention taken by way of non-limiting examples and illustrated by the appended drawings, in which:
  • Figure 1 is an overview of a removable wristwatch according to the invention;
  • Figure 2 is an exploded view of the assembly system of the invention;
  • Figure 3 is a sectional view along the bracelet to show the structure of the rigid element according to the first embodiment of the invention;
  • Figure 4 is a partial sectional view of the latching means associated with the watch case according to the invention;
  • Figure 5 is a radial sectional view of the rigid element along the strap to show the structure of the rigid element according to the second embodiment of the invention; and
  • Figure 6 is a side view of the jaw in the open position according to the second embodiment of the invention.

Comme illustré sur la figure 1, la montre-bracelet, selon l'invention, comprend un boîtier de montre 1 et un bracelet souple amovible 2 réalisé de préférence en cuir. Le boîtier 1 présente une forme sensiblement parallélépipédique dont deux côtés opposés et parallèles 1a et 1b sont arrondis. Les extrémités libres du bracelet 2 sont renforcées par des éléments rigides cylindriques 2a et 2b pouvant coopérer chacun avec un alésage pratiqué dans les côtés la et 1b du boîtier 1, de façon amovible et selon les flèches 3 et 4.As illustrated in FIG. 1, the wristwatch according to the invention comprises a watch case 1 and a removable flexible strap 2 preferably made of leather. The housing 1 has a substantially parallelepiped shape, two opposite and parallel sides 1 a and 1 b are rounded. The free ends of bracelet 2 are reinforced by rigid cylindrical elements 2 a and 2 b can each cooperate with a bore made in the sides 1a and 1b of the housing 1, in a removable manner and according to arrows 3 and 4.

De préférence, des ouvertures respectives des deux alésages du boîtier 1 se situent diamètralement opposées l'une de l'autre.Preferably, respective openings of the two bores of the housing 1 are located diametrically opposite one another.

Le bracelet 2 est réalisé sous forme de bande allongée. Les figures 2 et 3 montrent la façon dont l'élément rigide 2a est assemblé à l'extrémité correspondante 5 du bracelet 2. L'élément rigide 2a est constitué d'une lame tubulaire élastique 6 et d'un manchon tubulaire 7. La lame tubulaire 6 comporte une fente longitudinale dentée 8 permettant, à l'état libre, l'introduction de l'extrémité libre 5 du bracelet 2. Le manchon 7 comporte une fente axiale 9, une extrémité fermée 10 et une rainure circonférentielle 11. L'ouverture de la fente axiale 9 du manchon 7 est plus grande que l'épaisseur de l'extrémité libre 5 du bracelet 2 pour permettre son passage.Bracelet 2 is produced in the form of an elongated strip. FIGS. 2 and 3 show how the rigid element 2 a is assembled at the corresponding end 5 of the strap 2. The rigid element 2 a consists of an elastic tubular blade 6 and a tubular sleeve 7. The tubular blade 6 has a longitudinal toothed slot 8 allowing, in the free state, the introduction of the free end 5 of the bracelet 2. The sleeve 7 has an axial slot 9, a closed end 10 and a circumferential groove 11. The opening of the axial slot 9 of the sleeve 7 is larger than the thickness of the free end 5 of the bracelet 2 to allow its passage.

Le diamètre intérieur du manchon 7 doit être inférieur au diamètre extérieur de la lame tubulaire élastique 6 lorsqu'elle est à l'état libre. Une telle exigence est nécessaire pour imposer une déformation élastique de la lame 6, se traduisant par une réduction de sa section transversale, lors de son assemblage à l'intérieur du manchon 7. Cette déformation élastique de la lame tubulaire 6 se traduit par un pincement de la fente dentée 8 sur les deux faces de la partie d'extrémité 5 du bracelet 2 permettant ainsi le maintien de la partie d'extrémité correspondante 5 dans l'élément rigide 2a.The inside diameter of the sleeve 7 must be less than the outside diameter of the elastic tubular blade 6 when it is in the free state. Such a requirement is necessary to impose an elastic deformation of the blade 6, resulting in a reduction in its cross section, during its assembly inside the sleeve 7. This elastic deformation of the tubular blade 6 results in a pinching of the toothed slot 8 on the two faces of the end part 5 of the bracelet 2 thus allowing the maintenance of the corresponding end part 5 in the rigid element 2 a .

L'assemblage de l'élément rigide 2a sur l'extrémité libre 5 du bracelet 2 est relativement simple. On introduit d'abord l'extrémité libre 5 du bracelet 2 dans la fente dentée 8 de la lame tubulaire élastique 6. On impose ensuite une déformation élastique de la lame 6 pour réduire sa section au moyen d'un effort extérieur. On introduit axialement la lame tubulaire 6 avec la partie d'extrémité 5 du bracelet pincée dans la fente dentée 8 à l'intérieur du manchon tubulaire 7 par son extrémité ouverte à l'opposé de l'extrémité 10. Lors du montage de la lame tubulaire 6 dans le manchon 7, la partie d'extrémité 5 du bracelet 2 coulisse dans la fente axiale 9 du manchon 7. La déformation élastique de la lame tubulaire 6 est ensuite maintenue par la paroi intérieure du manchon 7 comme montré sur la figure 3.The assembly of the rigid element 2 a on the free end 5 of the bracelet 2 is relatively simple. The free end 5 of the bracelet 2 is first introduced into the toothed slot 8 of the elastic tubular blade 6. An elastic deformation of the blade 6 is then imposed to reduce its section by means of an external force. The tubular blade 6 is introduced axially with the end part 5 of the strap pinched in the toothed slot 8 inside the tubular sleeve 7 by its open end opposite the end 10. When mounting the blade tubular 6 in the sleeve 7, the end portion 5 of the bracelet 2 slides in the axial slot 9 of the sleeve 7. The elastic deformation of the tubular blade 6 is then held by the inner wall of the sleeve 7 as shown in FIG. 3.

Une fois l'élément rigide 2a monté sur l'extrémité libre 5 du bracelet 2, on peut introduire l'élément rigide 2a axialement dans l'alésage 13 pratiqué sur le côté 1a correspondant du boîtier 1 de la montre. Comme pour le manchon 7, la paroi de l'alésage 13 est traversée par une fente longitudinale 14 sur le côté permettant le passage de la partie d'extrémité 5 du bracelet 2. L'alésage 13 se termine par un fond 15 faisant partie d'un côté du boîtier 1. L'assemblage entre le bracelet 2 pourvu de l'élément rigide 2a et le boîtier 1 s'effectue alors par introduction de l'extrémité ouverte du manchon 7 dans l'ouverture de l'alésage 13 du boîtier 1.Once the rigid element 2 has been mounted on the free end 5 of the bracelet 2, the rigid element 2 a can be introduced axially into the bore 13 formed on the corresponding side 1 a of the case 1 of the watch. As for the sleeve 7, the wall of the bore 13 is crossed by a longitudinal slot 14 on the side allowing the passage of the end part 5 of the strap 2. The bore 13 ends in a bottom 15 forming part of one side of the case 1. The assembly between the bracelet 2 provided with the rigid element 2 a and the case 1 is then carried out by introduction of the open end of the sleeve 7 into the opening of the bore 13 of the housing 1.

Par ailleurs, l'invention prévoit un mécanisme d'encliquetage pour ledit assemblage entre le boîtier 1 de la montre et le bracelet 2. Ce système d'encliquetage est constitué d'une part par la rainure 11 circonférentielle du manchon 7, et d'autre part par une protubérance escamotable 16 sur la paroi intérieure de l'alésage 13. Comme montré sur la figure 4, la protubérance escamotable 16 peut être constituée par une bille se trouvant dans une cavité 17 pratiquée dans la paroi intérieure de l'alésage 13. Un ressort de compression 18 encastré dans la cavité 17 exerce un effort radial forçant la bille 16 vers l'intérieur de l'alésage 13, la position de la bille 16 sur la paroi intérieure de l'alésage 13 étant telle que la rainure circonférentielle 11 du manchon 7 se trouve en face de la bille en position assemblée du bracelet 2 sur le bottier 1.Furthermore, the invention provides a latching mechanism for said assembly between the case 1 of the watch and the strap 2. This latching system consists firstly of the circumferential groove 11 of the sleeve 7, and of on the other hand by a retractable protuberance 16 on the inner wall of the bore 13. As shown in FIG. 4, the retractable protrusion 16 can be constituted by a ball located in a cavity 17 formed in the inner wall of the bore 13 A compression spring 18 embedded in the cavity 17 exerts a radial force forcing the ball 16 towards the interior of the bore 13, the position of the ball 16 on the internal wall of the bore 13 being such that the circumferential groove 11 of the sleeve 7 is located opposite the ball in the assembled position of the bracelet 2 on the case 1.

Pendant l'introduction du manchon 7 dans l'alésage 13, la bille 16 rencontre d'abord l'extrémité ouverte du manchon 7 et la paroi extérieure de la partie d'extrémité correspondante du manchon 7 qui force la bille 16 à entrer vers l'intérieur de la cavité 17 en raison du faible jeu entre le manchon 7 et l'alésage 13. La rainure circonférentielle 11 du manchon 7 rencontre ensuite la bille 16 qui sous la poussée du ressort 18 entre en contact avec le fond de la rainure 11 en formant ainsi un moyen de blocage au mouvement axial du manchon 7 à l'intérieur de l'alésage 13. Il en résulte une sécurité du port de la montre bracelet de l'invention sur le poignet de l'utilisateur. La rainure circonférentielle 11 coopère avec la bille 16 pour permettre une libre rotation du manchon 7 dans l'alésage 13.During the introduction of the sleeve 7 into the bore 13, the ball 16 first meets the open end of the sleeve 7 and the outer wall of the corresponding end portion of the sleeve 7 which forces the ball 16 to enter towards the inside the cavity 17 due to the small clearance between the sleeve 7 and the bore 13. The circumferential groove 11 of the sleeve 7 then meets the ball 16 which under the thrust of the spring 18 comes into contact with the bottom of the groove 11 thereby forming a means for blocking the axial movement of the sleeve 7 inside the bore 13. This results in safety in wearing the wristwatch of the invention on the wrist of the user. The circumferential groove 11 cooperates with the ball 16 to allow free rotation of the sleeve 7 in the bore 13.

Pour démonter le bracelet 2 du boîtier 1 de la montre, il suffit d'imposer un effort le long du manchon 7 suffisamment important pour désengager la bille 16 de la rainure circonférentielle 11 du manchon 7.To dismantle the strap 2 from the watch case 1, it suffices to impose a force along the sleeve 7 which is large enough to disengage the ball 16 from the circumferential groove 11 of the sleeve 7.

De préférence, le manchon 7 et la lame tubulaire élastique 6 sont réalisés en matériau métallique pour améliorer la performance mécanique de l'élément rigide 2a. L'extrémité fermée 10 du manchon 7 est de préférence constituée du même métal que celui sur le côté latéral correspondant du boîtier 1 de la montre, de façon à former une surface uniforme sur ledit côté du boîtier lorsque l'élément métallique 2a est en position assemblée par rapport au côté 1a correspondant du boîtier. D'une manière générale, la surface extérieure visible du boîtier 1 de la montre est avantageusement réalisée en un métal précieux, tel que de l'or.Preferably, the sleeve 7 and the elastic tubular blade 6 are made of metallic material to improve the mechanical performance of the rigid element 2 a . The closed end 10 of the sleeve 7 is preferably made of the same metal as that on the corresponding lateral side of the case 1 of the watch, so as to form a uniform surface on said side of the case when the metallic element 2 a is in assembled position relative to the side 1 a corresponding housing. In general, the visible external surface of the case 1 of the watch is advantageously made of a precious metal, such as gold.

La présente invention permet de réaliser le manchon 7 et la lame tubulaire 6 en un métal moins précieux possédant des caractéristiques mécaniques supérieures, par exemple en acier inoxydable, permettant également de réduire le coût de fabrication. L'extrémité fermée 10 du manchon 7 peut comporter une couche en or plaqué.The present invention allows the sleeve 7 and the tubular blade 6 to be made of a less precious metal having superior mechanical characteristics, for example stainless steel, also making it possible to reduce the manufacturing cost. The closed end 10 of the sleeve 7 may have a layer of gold plated.

La structure de l'élément métallique 2a, 2b est de montage rapide et simple sur les parties d'extrémité du bracelet 2 qui peut être de longueur, d'épaisseur, de coloris, et d'aspect variés.The structure of the metal element 2 a , 2 b is quick and simple to mount on the end parts of the bracelet 2 which can be of length, thickness, color, and varied appearance.

Le second mode de réalisation de l'invention, illustré par les figures 5 et 6, diffère du premier mode précédemment décrit uniquement par le fait que la lame tubulaire élastique 6 est remplacée par une mâchoire cylindrique 20 dans l'élément rigide 2a.The second embodiment of the invention, illustrated by FIGS. 5 and 6, differs from the first embodiment previously described only by the fact that the elastic tubular blade 6 is replaced by a cylindrical jaw 20 in the rigid element 2 a .

La mâchoire 20 comprend deux éléments dentés 21, 22 reliés l'un à l'autre par une languette flexible longitudinale 23. En position de montage du bracelet 2 dans l'élément rigide 2a, la partie d'extrémité libre 5 du bracelet 2 est prise en sandwich entre les dents 21a et 22a des éléments dentés 21 et 22 de la mâchoire 20. Les dents 21a et 22a pénètrent dans les faces opposées de la partie d'extrémité libre 5 du bracelet 2 pour son maintien en place.The jaw 20 comprises two toothed elements 21, 22 connected to one another by a flexible longitudinal tongue 23. In the mounting position of the bracelet 2 in the rigid element 2 a , the free end part 5 of the bracelet 2 is sandwiched between the teeth 21 a and 22 has toothed elements 21 and 22 of the jaw 20. The teeth 21a and 22a enter the opposite sides of the free end portion 5 of the strap 2 to maintain it in place.

La mâchoire 20 ainsi fermée est ensuite introduite axialement dans le manchon 7 en laissant le bracelet glisser dans la fente longitudinale 9 du manchon 7. L'élasticité du bracelet 2 a tendance à écarter les éléments dentés 21 et 22 de la mâchoire 20 en les plaquant contre la paroi intérieure du manchon 7 qui maintient alors la mâchoire de la même manière que pour la lame élastique 6.The jaw 20 thus closed is then introduced axially into the sleeve 7, letting the bracelet slide in the longitudinal slot 9 of the sleeve 7. The elasticity of the bracelet 2 tends to spread the toothed elements 21 and 22 of the jaw 20 by pressing them down. against the inner wall of the sleeve 7 which then holds the jaw in the same way as for the elastic blade 6.

Pour améliorer le maintien du bracelet dans l'élément rigide 2a, la mâchoire 20 peut, comporter au moins un tenon 24 sur la face dentée de l'élément denté 21 et au moins un trou de réception 25 du tenon 24 pratiqué dans l'autre élément denté 22. De ce fait, la partie d'extrémité libre 5 du bracelet doit comporter le nombre de perforations correspondant à celui de paires de tenon 24/trou de réception 25 de la mâchoire 20.To improve the retention of the bracelet in the rigid element 2 a , the jaw 20 may include at least one pin 24 on the toothed face of the toothed element 21 and at least one hole 25 for receiving the pin 24 made in the another toothed element 22. As a result, the free end part 5 of the bracelet must include the number of perforations corresponding to that of pairs of tenon 24 / receiving hole 25 of the jaw 20.

De cette façon, lors de la fermeture de la mâchoire 20 sur l'extrémité libre 5 du bracelet 2, le(s) tenon(s) 24 traverse(nt) le(s) perforation(s) de l'extrémité libre 5 et pénètre(nt) dans le(s) trous) de réception 25 correspondant(s) et s'y bloque(nt). Le maintien du bracelet 2 par l'élément rigide 2a est ainsi amélioré. Dans la pratique, on utilise deux tenons 24 dans la mâchoire 20.In this way, when the jaw 20 on the free end 5 of the bracelet 2 is closed, the lug (s) 24 pass through the perforation (s) of the free end 5 and enters (s) the corresponding receiving hole (s) 25 and hangs there. Maintaining the strap 2 by the rigid element 2 a is thus improved. In practice, two studs 24 are used in the jaw 20.

De préférence, la mâchoire 20 est réalisée en une seule pièce. Elle doit avoir une bonne résistance mécanique pour assurer sa fonction. Pour cela, elle peut être réalisée en matériau métallique ou en matière plastique rigide. On peut par exemple réaliser la mâchoire 20 en une pièce en matière plastique moulée.Preferably, the jaw 20 is made in one piece. It must have good mechanical strength to ensure its function. For this, it can be made of metallic material or rigid plastic. One can for example make the jaw 20 in a molded plastic part.

Claims (10)

  1. Bracelet watch comprising a watch of which the case (1) has at least two parallel opposite sides (1a, 1b) each provided with assembly means removably fitting into a rigid element (2a,2b) reinforcing a free end (5) of a flexible bracelet (2), the assembly means of the case of the watch comprising a drilling (13) whose wall has an axial slot (14) passing through it of a width greater than the thickness of the bracelet (2), characterized in that the rigid element comprises an elastic tubular blade (6) and a sleeve (7), one end (10) of which is closed, the tubular blade (6) having a toothed axial slot (8) in which the free end (5) of the flexible bracelet (2) is inserted, the sleeve (7) having an axial slot (9) emerging at the open end of the sleeve (7) and the opening of which is larger than the thickness of the bracelet (2), the external diameter' of the sleeve (7) being substantially identical to that of one of the drillings (13) of the case (1), the internal diameter of the sleeve (7) being smaller than the external diameter of the tubular blade (6), such that the axial insertion of the tubular blade (6) into the sleeve (7) requires an elastic deformation of the tubular blade (6), giving rise to blocking of the free end (5) of the bracelet (2) by pinching of the toothed axial slot (8).
  2. Bracelet watch comprising a watch of which the case (1) has at least two parallel opposite sides (1a, 1b) each provided with assembly means removably fitting into a rigid element (2a,2b) reinforcing a free end (5) of a flexible bracelet (2),the assembly means of the case of the watch comprising a drilling (13) whose wall has an axial slot (14) passing through if of a width greater than the thickness of the bracelet, characterized in that the rigid element comprises a cylindrical jaw (20) and a sleeve (7), one end of which is closed, the jaw (20) comprising two toothed elements (21,22) joined to each other by means of a longitudinal flexible tab (23) and sandwiching the free end (5) of the bracelet (2) with the aid of teeth (21a, 22a), the sleeve (7) having an external diameter substantially identical to that of one of the drillings (13) of the case (1) and having an axial slot (9) emerging at the open end of the sleeve (7) and the opening of which is larger than the thickness of the bracelet (2), the jaw ( 20) being inserted axially inside the sleeve (7) via its open end and held in the sleeve (7) by the elastic deformation of the free end (5) of the bracelet (2).
  3. Bracelet watch according to Claim 2, characterized in that one of the toothed elements (21) has on the toothed face, at least one stud (24), and in that the other toothed element (22) has at least one receiving hole (25) for the stud, the free end (5) of the bracelet (2) comprising at least one perforation so that, when the jaw (20) is closed , the stud passes through the perforation and penetrates into the receiving hole (25) in order to be blocked therein.
  4. Bracelet watch according to Claim 2 or 3, characterized in that the jaw (20) is made in a single piece from metallic material.
  5. Bracelet watch according to Claim 2 or 3, characterized in that the jaw (20) is made in a single piece molded from plastic material.
  6. Bracelet watch according to Claim 1, characterized in that the elastic tubular blade (6) is made from metallic material.
  7. Bracelet watch according to any one of the preceding claims 1-6, characterized in that it comprises a pawl means consisting, on the one hand, of a circumferential groove (11) on the outer face of the sleeve (7) and, on the other hand, of a retractable protuberance (16) intera-cting with a compression spring (18) inside a cavity (17) made on the inner wall of the drilling (13).
  8. Bracelet watch according to any one of the preceding claims 1,6-8, characterized in that the respective openings of the two drillings of the case (1) are located diametrically opposite each other.
  9. Bracelet watch according to any one of the preceding claims , characterized in that the sleeve (7) is made from a metallic material.
  10. Bracelet watch according to any one of the preceding claims , characterized in that the rigid element (2a,2b) are made at least partially with the aid of a metallic material other than that forming the outer face of the case (1).
EP91906593A 1990-03-14 1991-03-13 Watch with removable bracelet Expired - Lifetime EP0471834B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9003277A FR2659759B1 (en) 1990-03-14 1990-03-14 REMOVABLE STRAP WATCH.
FR9003277 1990-03-14
PCT/FR1991/000204 WO1991014212A1 (en) 1990-03-14 1991-03-13 Watch with removable bracelet

Publications (2)

Publication Number Publication Date
EP0471834A1 EP0471834A1 (en) 1992-02-26
EP0471834B1 true EP0471834B1 (en) 1994-07-13

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ID=9394734

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Application Number Title Priority Date Filing Date
EP91906593A Expired - Lifetime EP0471834B1 (en) 1990-03-14 1991-03-13 Watch with removable bracelet

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US (1) US5146437A (en)
EP (1) EP0471834B1 (en)
JP (1) JP2504142Y2 (en)
AT (1) ATE108566T1 (en)
DE (1) DE69102840T2 (en)
ES (1) ES2055986T3 (en)
FR (1) FR2659759B1 (en)
MC (1) MC2190A1 (en)
WO (1) WO1991014212A1 (en)

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US10244830B2 (en) 2015-03-13 2019-04-02 Google Llc Clasp mechanisms for wristwatch bands
EP4202571A1 (en) * 2021-12-23 2023-06-28 ETA SA Manufacture Horlogère Suisse Portable object comprising a middle without attachment lugs and a removable strap

Also Published As

Publication number Publication date
EP0471834A1 (en) 1992-02-26
MC2190A1 (en) 1992-09-16
DE69102840T2 (en) 1995-01-12
JP2504142Y2 (en) 1996-07-10
FR2659759A1 (en) 1991-09-20
ATE108566T1 (en) 1994-07-15
WO1991014212A1 (en) 1991-09-19
JPH05500004U (en) 1993-03-04
DE69102840D1 (en) 1994-08-18
FR2659759B1 (en) 1995-03-17
ES2055986T3 (en) 1994-09-01
US5146437A (en) 1992-09-08

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