EP1970779B1 - Watch and casing method - Google Patents

Watch and casing method Download PDF

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Publication number
EP1970779B1
EP1970779B1 EP20080152818 EP08152818A EP1970779B1 EP 1970779 B1 EP1970779 B1 EP 1970779B1 EP 20080152818 EP20080152818 EP 20080152818 EP 08152818 A EP08152818 A EP 08152818A EP 1970779 B1 EP1970779 B1 EP 1970779B1
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EP
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Prior art keywords
frame
movement
wrist watch
fixing
watch according
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EP20080152818
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German (de)
French (fr)
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EP1970779A1 (en
Inventor
Frédéric Bôle
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Richemont International SA
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Richemont International SA
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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
    • G04B37/04—Mounting the clockwork in the case; Shock absorbing mountings
    • G04B37/05—Fixed mountings for pocket or wrist watches
    • 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
    • G04B37/08—Hermetic sealing of openings, joints, passages or slits
    • G04B37/081—Complete encasings for wrist or pocket watches also comprising means for hermetic sealing of the winding stem and crown
    • 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
    • G04B37/08—Hermetic sealing of openings, joints, passages or slits
    • G04B37/11—Hermetic sealing of openings, joints, passages or slits of the back cover of pocket or wrist watches

Definitions

  • the present invention relates to a watch and a method of nesting movement in a watch case.
  • the watch movements are usually held in the watch case by means of a casing ring.
  • the casing ring can have various shapes, as long as it surrounds the movement and must be placed inside the middle of the box. Screws or flanges make it possible to maintain the movement in the circle and to maintain the circle in the watch case.
  • GB1486059 describes a watch case in which the movement is maintained by compressing the annular bottom seal which also serves to prevent water infiltration between the bottom and the middle part.
  • This solution is not optimal; the same joint must fulfill two completely different constraints and is difficult to optimize for each of these functions.
  • the bottom seal is generally free when the bottom of the box is open; the movement is then no longer held at all, and may exit completely from the box during unscrewing.
  • CH331282 describes a watch case in which a range of movement is taken between the bottom and the middle part. The maintenance of the movement depends on the tightening of the bottom, which is not optimal.
  • DE3100791 discloses a watch having a first seal for sealing the bottom and a second seal for exerting pressure between the casing ring and the movement. The movement is maintained only against the bottom by a single circle, and is poorly protected from shocks.
  • CH534674 discloses a watch case in which the movement is held between two casing members compressed against each other with a leaf spring supported against the bottom. This spring is difficult to place. When the bottom is open, the spring tends to escape so that the stacking of the casing rings is undone. The assembly and maintenance of this watch are therefore delicate. Moreover, the two circles are not in support against each other and their spacing is difficult to control.
  • CH564802 describes another watch case in which the pressure between two casing elements maintaining the movement is determined by the depth of screwing of the bottom. The movement may be damaged if the bottom is over-screwed, and is not held firmly when the bottom is unscrewed. This solution is not optimal.
  • An object of the present invention is therefore to provide a watch and a casing method free from the limitations of watches and known methods.
  • the qualifiers "high” or “superior” refer to a watch placed on its bottom, in the position illustrated in the figure; conversely, the adjectives "low” and “lower” denote the portions of the watch oriented towards the bottom of the watch and the bottom of the figure.
  • the “axial” direction is perpendicular to the plane of the dial and the plate.
  • a “radial” direction is parallel to the dial or platinum of the movement.
  • the watch shown in partial section on the figure 1 comprises a middle 6, an ice 8 and a bottom 7.
  • a mechanical or electronic movement 5 is maintained in the middle by casing elements 1, 2, 3 described below.
  • a dial 9 visible through the glass 8 conceals at least part of the movement.
  • Other elements of the watch for example the hands, the winding stem, the push buttons, the bracelet horns, the bracelet, etc. are not visible on this partial section along the axis 12 o'clock - 6 o'clock or have not been represented for the sake of simplification.
  • the casing elements comprise a first casing ring 1 bearing against a portion 60 of the middle part 6.
  • the portion 60 is constituted here by an annular bearing parallel to the plane of the dial.
  • the dial is compressed between the casing ring 1 and another scope 63 of the middle part.
  • the first casing ring can be made of any material, for example in a metal such as rhodium-plated brass or in a more easily compressible synthetic material.
  • the movement 5 comprises an annular peripheral rib 50 bearing against a bearing surface 11 of the first casing ring.
  • the rib 50 and the bearing 11 may be continuous all around the movement, or consist of discontinuous segments of equal or unequal lengths.
  • the axial position of the movement 5 in the middle part 6 is determined by the axial position of the bearing surface 60 and by the distance between the upper face of the first casing ring 1 and the bearing surface 11.
  • a second casing ring 2 is superimposed under the first casing ring so as to support the rib 50 of the movement against the scope 11 of the first casing ring.
  • the upper face of the second circle 2 defines with the scope 11 of the first circle a groove in which the rib 50 is inserted.
  • the movement 5 is caught between the two circles 1, 2 when the watch is assembled, and can no longer move axially.
  • the two casing rings are in direct abutment against each other so that their spacing is perfectly controlled; it is thus possible to ensure a precise and play-free holding of the span 11 between the corresponding support portions of the two circles.
  • the upper face of the second circle 2 bears against the lower face of the first circle 1 prevents any risk of tilting or pivoting circles inside the box.
  • the outer diameter of the second casing ring 2 is preferably slightly greater than the outside diameter of the first casing ring 1; the centering of the movement in the box is therefore ensured only by the contact between the outer faces of the second circle 2 and the middle part 6.
  • the axial position of the movement depends, as has been said, on the first circle against which movement is supported.
  • the clearance between the first casing ring 1 and the inside diameter of the middle part 6 is therefore greater than the clearance between the second circle and the middle part, but nevertheless small enough to prevent any vibration of the first circle 1 in its own plane.
  • the second ring 2 can be machined from metal, for example rhodium-plated brass, or injected into a synthetic material. Circles 1 and 2 in different materials can also be imagined.
  • the second casing ring 2 is provided with a mark 22, in this example a hole on the lower surface of the circle, to allow the operator to orient it approximately in the middle part.
  • the passage hole for the winding stem (not shown) is also a polarizer which forces the radial alignment of the movement with the second circle 2 and with the middle part.
  • a first annular seal 3 (o-ring, o-ring seal) housed in a groove 30 ensures sufficient compression of the two casing rings between them and against the movement, even when the different parts are not machined with perfect tolerances.
  • the annular seal 3 also makes it possible to center the second casing ring with respect to the middle part, and to absorb shocks.
  • the seal has for example a circular section and may be made of an elastomeric material, PTFE, silicone-based or other elastically compressible material.
  • the groove 30 has a trapezoidal section, the base of the trapezium being shorter than its top to prevent the seal from coming out easily when the bottom 7 is open.
  • the side walls of the groove are constituted by a portion 21 of the second circle 2 and a portion 62 of the middle part.
  • the upper face of the groove is constituted by another portion 20 on the lower face of the second circle, while the lower face of this groove is closed by a rib 71 projecting on the upper face of the bottom 7 when it is screwed .
  • the seal 3 is therefore wedged between the three elements 2, 6 and 7.
  • the support of the seal 3 against the oblique portion 62 of the middle part also allows to exert a vertical pressure on the two circles 2, 3 even when the bottom is open. This avoids the risk of accidental disassembly of the stack when the bottom is open.
  • the seal 3 remains at the bottom of the groove 30 when screwing the bottom, and is not rotated with the bottom.
  • a segment of the groove 30 is provided with a not shown olivette, that is to say a chamfer that allows to introduce a tweezers or other tool between the seal 3 the second circle 2 to extract the seal 3 to remove the casing ring and movement.
  • the depth of screwing of the bottom determines the compression of the first annular seal 3 in the groove 30.
  • the bottom 7 is screwed by means of a peripheral thread 70 engaged in a tapping of the middle part; funds screwed up with several discrete screws or clip-on funds can also be used.
  • the shape of the bottom 6, the middle part 6 and / or the thread 70 makes it possible to limit the depth of screwing of the bottom and to avoid the risk of too much crushing of the joint 3 and the casing elements.
  • Sealing is ensured by a second O-ring annular seal, preferably a ring-shaped seal in an elastically compressible material, and is compressed between the bottom 7 and the middle part 6.
  • the second seal 4 is housed in a machined groove in the middle, and therefore does not necessarily require a thick bottom.
  • the use of two separate joints makes it possible to dissociate the sealing stresses and the stresses associated with the axial and radial positioning of the movement in the watch.
  • the illustrated embodiment further employs two economic and easy-to-use circular section annular seals.
  • the movement 5 is fitted into the watch by first threading the first circle 1 over the movement 5, until it bears against the projection 50.
  • the dial 9 is then placed on the movement, by inserting his feet in holes provided for this purpose on the upper surface of the movement.
  • the first casing ring 1 is then wedged between the underside of the dial and the projection 50. It is then proceeded to the laying of the needles.
  • the assembly is then inserted in the middle part 6 by the bottom, until the first circle 1 bears against the span 60 provided for this purpose in the middle part 6.
  • the movement is held against the first casing ring 1 by inserting the second casing ring 2 below the first circle 1 and the movement. It is provisionally aligned with the circle 2 by matching the mark 22 with a corresponding mark on the movement and / or on the middle part, then definitively by passing the winding stem through a non-illustrated passage provided for this purpose through the second casing ring 2.
  • the annular seal 3 is then inserted by forcing it with a tool in the groove 30. It makes it possible to maintain the second circle axially and radially, and therefore the movement that can be extracted or moved only by pulling it with a force greater than the friction force of the annular seal 3 against the inner face of the middle part.
  • the trapezoidal shape of the groove causes additional compression of the seal 3 when the second casing ring is pulled down the watch, so that extraction of the movement without previously removing the seal 3 is difficult or even impossible.
  • the seal 4 is then inserted into a groove provided for this purpose under the lower face of the middle part, then the bottom 7 is screwed under the middle part.
  • the rib 70 projecting from the upper face of the bottom 7 closes the groove 30 by compressing the seal 3 at the bottom of this groove.
  • the natural elasticity of the seal tends to push the two casing rings and the movement against the top, even when the bottom 7 is not fully screwed. The axial position of the movement is thus independent of the tightening torque of the bottom.
  • the present invention allows an extremely simple, fast, stable, robust and sealed casing without the need for screws or flanges.
  • the present invention also relates to the first and second casing rings and the frames adapted to the method of the invention.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)

Description

Domaine techniqueTechnical area

La présente invention concerne une montre et un procédé d'emboîtement du mouvement dans une boîte de montre.The present invention relates to a watch and a method of nesting movement in a watch case.

Etat de la techniqueState of the art

Les mouvements de montre sont habituellement maintenus dans la boîte de montre au moyen d'un cercle d'emboîtage. Selon la forme de mouvement et de la boîte, le cercle d'emboîtage peut avoir diverses formes, dans la mesure où il entoure le mouvement et doit être placé à l'intérieur de la carrure de la boîte. Des vis ou des brides permettent d'assurer le maintien du mouvement dans le cercle et le maintien du cercle dans la boîte de montre.The watch movements are usually held in the watch case by means of a casing ring. Depending on the form of movement and the box, the casing ring can have various shapes, as long as it surrounds the movement and must be placed inside the middle of the box. Screws or flanges make it possible to maintain the movement in the circle and to maintain the circle in the watch case.

Ce procédé présente un certain nombre d'inconvénients. Le maintien nécessite une bonne maîtrise du couple de serrage des vis, et un usinage très précis des brides. Les boîtes de montre lourdes peuvent cependant être soumises à des chocs importants ou à des vibrations qui entraînent à terme un desserrage des vis voire une rupture des brides ou des vis. Le risque de desserrage est parfois limité en collant les vis, ce qui a l'inconvénient de compliquer le démontage. Enfin, l'emboîtage au moyen de vis ou de brides nécessite un temps important et une manipulation délicate.This process has a number of disadvantages. The maintenance requires good control of the tightening torque of the screws, and very precise machining of the flanges. Heavy watch cases, however, can be subject to heavy shocks or vibrations that eventually lead to loosening of the screws or even rupture of the flanges or screws. The risk of loosening is sometimes limited by gluing the screws, which has the disadvantage of complicating the disassembly. Finally, the casing by means of screws or flanges requires a long time and delicate handling.

GB1486059 décrit une boîte de montre dans laquelle le mouvement est maintenu grâce à la compression du joint de fond annulaire qui sert aussi à empêcher les infiltrations d'eau entre le fond et la carrure. Cette solution est peu optimale ; le même joint doit remplir deux contraintes totalement différentes et est difficile à optimiser pour chacune de ces fonctions. Par ailleurs, le joint de fond est généralement libre lorsque le fond de la boîte est ouvert; le mouvement n'est alors plus du tout tenu, et risque de sortir complètement de la boîte lors du dévissage. GB1486059 describes a watch case in which the movement is maintained by compressing the annular bottom seal which also serves to prevent water infiltration between the bottom and the middle part. This solution is not optimal; the same joint must fulfill two completely different constraints and is difficult to optimize for each of these functions. Furthermore, the bottom seal is generally free when the bottom of the box is open; the movement is then no longer held at all, and may exit completely from the box during unscrewing.

CH331282 décrit une boîte de montre dans laquelle une portée du mouvement est prise entre le fond et la carrure. Le maintien du mouvement dépend du serrage du fond, ce qui est peu optimal. CH331282 describes a watch case in which a range of movement is taken between the bottom and the middle part. The maintenance of the movement depends on the tightening of the bottom, which is not optimal.

DE3100791 décrit une montre comportant un premier joint pour étanchéifier le fond et un deuxième joint pour exercer une pression entre le cercle d'emboîtage et le mouvement. Le mouvement est maintenu uniquement contre le bas par un cercle unique, et est mal protégé des chocs. DE3100791 discloses a watch having a first seal for sealing the bottom and a second seal for exerting pressure between the casing ring and the movement. The movement is maintained only against the bottom by a single circle, and is poorly protected from shocks.

On connaît par ailleurs des boîtes de montre dans lesquelles le mouvement est maintenu par compression entre deux éléments d'emboîtage distincts. Un maintien ferme et précis est uniquement possible si la distance entre les deux éléments d'emboîtage est parfaitement contrôlée, ce qui est difficile à garantir lorsque les deux éléments ne sont pas en appui l'un contre l'autre.Also known are watch cases in which the movement is maintained by compression between two separate casing elements. Firm and precise support is only possible if the distance between the two casing elements is perfectly controlled, which is difficult to guarantee when the two elements are not in contact against each other.

CH534674 décrit une boîte de montre dans laquelle le mouvement est maintenu entre deux éléments d'emboîtage comprimés l'une contre l'autre avec un ressort à lamelle appuyé contre le fond. Ce ressort est difficile à placer. Lorsque le fond est ouvert, le ressort tend à s'échapper en sorte que l'empilement des cercles d'emboîtage se défait. L'assemblage et la maintenance de cette montre sont donc délicats. Par ailleurs, les deux cercles ne sont pas en appui l'un contre l'autre et leur écartement est donc difficile à contrôler. CH534674 discloses a watch case in which the movement is held between two casing members compressed against each other with a leaf spring supported against the bottom. This spring is difficult to place. When the bottom is open, the spring tends to escape so that the stacking of the casing rings is undone. The assembly and maintenance of this watch are therefore delicate. Moreover, the two circles are not in support against each other and their spacing is difficult to control.

CH564802 décrit une autre boîte de montre dans laquelle la pression entre deux éléments d'emboîtage maintenant le mouvement est déterminée par la profondeur de vissage du fond. Le mouvement peut être endommagé si le fond est trop vissé, et n'est pas maintenu fermement lorsque le fond est dévissé. Cette solution est peu optimale. CH564802 describes another watch case in which the pressure between two casing elements maintaining the movement is determined by the depth of screwing of the bottom. The movement may be damaged if the bottom is over-screwed, and is not held firmly when the bottom is unscrewed. This solution is not optimal.

Bref résumé de l'inventionBrief summary of the invention

Un but de la présente invention est donc de proposer une montre et un procédé d'emboîtage exempt des limitations des montres et des procédés connus.An object of the present invention is therefore to provide a watch and a casing method free from the limitations of watches and known methods.

Selon l'invention, ces buts sont atteints au moyen des éléments des revendications indépendantes, des modes de réalisation préférentiels étant en outre indiqués dans les revendications dépendantes.According to the invention, these objects are achieved by means of the elements of the independent claims, preferential embodiments being further indicated in the dependent claims.

Brève description des dessinsBrief description of the drawings

Des exemples de mise en oeuvre de l'invention sont indiqués dans la description illustrée par l'unique figure annexée qui montre une coupe radiale d'une partie de montre, selon l'axe 12 heures-6 heures.Examples of implementation of the invention are indicated in the description illustrated by the single appended figure which shows a radial section of a part of a watch, along the axis 12 o'clock-6 o'clock.

Exemple(s) de mode de réalisation de l'inventionExample (s) of embodiment of the invention

Dans la suite de la description et des revendications, les qualificatifs « haut » ou « supérieur » se réfèrent à une montre posée sur son fond, dans la position illustrée sur la figure ; inversement, les adjectifs « bas » et « inférieur » désignent les portions de la montre orientées vers le fond de la montre et le bas de la figure. La direction « axiale » est perpendiculaire au plan du cadran et de la platine. Une direction « radiale » est en revanche parallèle au cadran ou à la platine du mouvement.In the remainder of the description and the claims, the qualifiers "high" or "superior" refer to a watch placed on its bottom, in the position illustrated in the figure; conversely, the adjectives "low" and "lower" denote the portions of the watch oriented towards the bottom of the watch and the bottom of the figure. The "axial" direction is perpendicular to the plane of the dial and the plate. On the other hand, a "radial" direction is parallel to the dial or platinum of the movement.

La montre illustrée en coupe partielle sur la figure 1 comporte une carrure 6, une glace 8 et un fond 7. Un mouvement mécanique ou électronique 5 est maintenu dans la carrure par des éléments d'emboîtage 1, 2, 3 décrits plus bas. Un cadran 9 visible à travers la glace 8 dissimule au moins en partie le mouvement. D'autres éléments de la montre, par exemple les aiguilles, la tige de remontoir, les boutons-poussoirs, les cornes de bracelet, le bracelet, etc ne sont pas visibles sur cette coupe partielle selon l'axe 12 heures - 6 heures ou n'ont pas été représentés par souci de simplification.The watch shown in partial section on the figure 1 comprises a middle 6, an ice 8 and a bottom 7. A mechanical or electronic movement 5 is maintained in the middle by casing elements 1, 2, 3 described below. A dial 9 visible through the glass 8 conceals at least part of the movement. Other elements of the watch, for example the hands, the winding stem, the push buttons, the bracelet horns, the bracelet, etc. are not visible on this partial section along the axis 12 o'clock - 6 o'clock or have not been represented for the sake of simplification.

Les éléments d'emboîtage comportent un premier cercle d'emboîtage 1 en appui contre une portion 60 de la carrure 6. La portion 60 est constituée ici par une portée annulaire parallèle au plan du cadran. Le cadran est comprimé entre le cercle d'emboîtage 1 et une autre portée 63 de la carrure. Le premier cercle d'emboîtage peut être réalisé dans n'importe quel matériau, par exemple dans un métal tel que le laiton rodié ou dans un matériau synthétique plus facilement compressible.The casing elements comprise a first casing ring 1 bearing against a portion 60 of the middle part 6. The portion 60 is constituted here by an annular bearing parallel to the plane of the dial. The dial is compressed between the casing ring 1 and another scope 63 of the middle part. The first casing ring can be made of any material, for example in a metal such as rhodium-plated brass or in a more easily compressible synthetic material.

Le mouvement 5 comporte une nervure périphérique annulaire 50 en appui contre une portée 11 du premier cercle d'emboîtage. La nervure 50 et la portée 11 peuvent être continues tout autour du mouvement, ou être constituées de segments discontinus de longueurs égales ou inégales. La position axiale du mouvement 5 dans la carrure 6 est déterminée par la position axiale de la portée 60 et par la distance entre la face supérieure du premier cercle d'emboîtage 1 et la portée 11.The movement 5 comprises an annular peripheral rib 50 bearing against a bearing surface 11 of the first casing ring. The rib 50 and the bearing 11 may be continuous all around the movement, or consist of discontinuous segments of equal or unequal lengths. The axial position of the movement 5 in the middle part 6 is determined by the axial position of the bearing surface 60 and by the distance between the upper face of the first casing ring 1 and the bearing surface 11.

Un deuxième cercle d'emboîtage 2 vient se superposer sous le premier cercle d'emboîtage de manière à appuyer la nervure 50 du mouvement contre la portée 11 du premier cercle d'emboîtage. Ainsi, la face supérieure du deuxième cercle 2 définit avec la portée 11 du premier cercle une gorge dans laquelle la nervure 50 vient s'insérer. Le mouvement 5 est donc pris entre les deux cercles 1, 2 lorsque la montre est assemblée, et ne peut plus se déplacer axialement. Les deux cercles d'emboîtage sont en appui direct l'un contre l'autre en sorte que leur écartement est parfaitement contrôlé ; il est ainsi possible de garantir un maintien précis et sans jeu de la portée 11 entre les portions d'appui correspondantes des deux cercles. Par ailleurs, la face supérieure du deuxième cercle 2 en appui ferme contre la face inférieure du premier cercle 1 empêche tout risque de basculement ou pivotement des cercles à l'intérieur de la boîte.A second casing ring 2 is superimposed under the first casing ring so as to support the rib 50 of the movement against the scope 11 of the first casing ring. Thus, the upper face of the second circle 2 defines with the scope 11 of the first circle a groove in which the rib 50 is inserted. The movement 5 is caught between the two circles 1, 2 when the watch is assembled, and can no longer move axially. The two casing rings are in direct abutment against each other so that their spacing is perfectly controlled; it is thus possible to ensure a precise and play-free holding of the span 11 between the corresponding support portions of the two circles. Moreover, the upper face of the second circle 2 bears against the lower face of the first circle 1 prevents any risk of tilting or pivoting circles inside the box.

Le diamètre externe du deuxième cercle d'emboîtage 2 est de préférence légèrement supérieur au diamètre externe du premier cercle d'emboîtage 1 ; le centrage du mouvement dans la boîte est donc assuré uniquement par le contact entre les faces externes du deuxième cercle 2 et la carrure 6. La position axiale du mouvement dépend comme on l'a dit du premier cercle contre lequel le mouvement est appuyé. Le jeu entre le premier cercle d'emboîtage 1 et le diamètre intérieur de la carrure 6 est donc supérieur au jeu entre le deuxième cercle et la carrure, mais néanmoins suffisamment faible pour empêcher toute vibration du premier cercle 1 dans son propre plan.The outer diameter of the second casing ring 2 is preferably slightly greater than the outside diameter of the first casing ring 1; the centering of the movement in the box is therefore ensured only by the contact between the outer faces of the second circle 2 and the middle part 6. The axial position of the movement depends, as has been said, on the first circle against which movement is supported. The clearance between the first casing ring 1 and the inside diameter of the middle part 6 is therefore greater than the clearance between the second circle and the middle part, but nevertheless small enough to prevent any vibration of the first circle 1 in its own plane.

Tout comme le premier cercle d'emboîtage, le deuxième cercle 2 peut être usiné en métal, par exemple en laiton rodié, ou injecté dans un matériau synthétique. Des cercles 1 et 2 dans des matériaux différents peuvent aussi être imaginés.Like the first casing ring, the second ring 2 can be machined from metal, for example rhodium-plated brass, or injected into a synthetic material. Circles 1 and 2 in different materials can also be imagined.

Le deuxième cercle d'emboîtage 2 est muni d'une marque 22, dans cet exemple un trou sur la surface inférieure du cercle, afin de permettre à l'opérateur de l'orienter approximativement dans la carrure. Le trou de passage pour la tige de remontoir (non représentés) constitue en outre un détrompeur qui force l'alignement radial du mouvement avec le deuxième cercle 2 et avec la carrure.The second casing ring 2 is provided with a mark 22, in this example a hole on the lower surface of the circle, to allow the operator to orient it approximately in the middle part. The passage hole for the winding stem (not shown) is also a polarizer which forces the radial alignment of the movement with the second circle 2 and with the middle part.

Un premier joint annulaire 3 (joint torique, joint o-ring) logé dans une gorge 30 permet d'assurer une compression suffisante des deux cercles d'emboîtage entre eux et contre le mouvement, même lorsque les différents pièces ne sont pas usinées avec des tolérances parfaites. Le joint annulaire 3 permet aussi de centrer le deuxième cercle d'emboîtage par rapport à la carrure, et d'absorber les chocs. Le joint a par exemple une section circulaire et peut être réalisé dans un matériau élastomère, en PTFE, à base de silicone ou dans un autre matériau compressible élastiquement.A first annular seal 3 (o-ring, o-ring seal) housed in a groove 30 ensures sufficient compression of the two casing rings between them and against the movement, even when the different parts are not machined with perfect tolerances. The annular seal 3 also makes it possible to center the second casing ring with respect to the middle part, and to absorb shocks. The seal has for example a circular section and may be made of an elastomeric material, PTFE, silicone-based or other elastically compressible material.

La gorge 30 a une section trapézoïdale, la base du trapèze étant plus courte que son sommet afin d'empêcher que le joint ne sorte facilement lorsque le fond 7 est ouvert. Les parois latérales de la gorge sont constituées par une portion 21 du deuxième cercle 2 et par une portion 62 de la carrure. La face supérieure de la gorge est constituée par une autre portion 20 sur la face inférieure du deuxième cercle, tandis que la face inférieure de cette gorge est refermée par une nervure 71 en saillie sur la face supérieure du fond 7 lorsque celui-ci est vissé. Le joint 3 est donc coincé entre les trois éléments 2, 6 et 7. L'appui du joint 3 contre la portion 62 oblique de la carrure permet en outre d'exercer une pression verticale sur les deux cercles 2, 3 même lorsque le fond est ouvert. On évite ainsi le risque de démontage accidentel de l'empilement lorsque le fond est ouvert. D'autre part, le joint 3 reste au fond de la gorge 30 lors du vissage du fond, et n'est donc pas mis en rotation avec le fond.The groove 30 has a trapezoidal section, the base of the trapezium being shorter than its top to prevent the seal from coming out easily when the bottom 7 is open. The side walls of the groove are constituted by a portion 21 of the second circle 2 and a portion 62 of the middle part. The upper face of the groove is constituted by another portion 20 on the lower face of the second circle, while the lower face of this groove is closed by a rib 71 projecting on the upper face of the bottom 7 when it is screwed . The seal 3 is therefore wedged between the three elements 2, 6 and 7. The support of the seal 3 against the oblique portion 62 of the middle part also allows to exert a vertical pressure on the two circles 2, 3 even when the bottom is open. This avoids the risk of accidental disassembly of the stack when the bottom is open. On the other hand, the seal 3 remains at the bottom of the groove 30 when screwing the bottom, and is not rotated with the bottom.

Un segment de la gorge 30 est muni d'une olivette non représentée, c'est-à-dire d'un chanfrein qui permet d'introduire une brucelle ou un autre outil entre le joint 3 le deuxième cercle 2 afin d'extraire le joint 3 pour sortir le cercle d'emboîtage et le mouvement.A segment of the groove 30 is provided with a not shown olivette, that is to say a chamfer that allows to introduce a tweezers or other tool between the seal 3 the second circle 2 to extract the seal 3 to remove the casing ring and movement.

La profondeur de vissage du fond détermine la compression du premier joint annulaire 3 dans la gorge 30. Dans cet exemple, le fond 7 est vissé au moyen d'un filetage périphérique 70 engagé dans un taraudage de la carrure ; des fonds vissés au moyen de plusieurs vis discrètes ou des fonds clipsés peuvent aussi être employés. La forme du fond 6, de la carrure 6 et/ou du filetage 70 permet de limiter la profondeur de vissage du fond et d'éviter le risque d'écrasement trop important du joint 3 et des éléments d'emboîtage.The depth of screwing of the bottom determines the compression of the first annular seal 3 in the groove 30. In this example, the bottom 7 is screwed by means of a peripheral thread 70 engaged in a tapping of the middle part; funds screwed up with several discrete screws or clip-on funds can also be used. The shape of the bottom 6, the middle part 6 and / or the thread 70 makes it possible to limit the depth of screwing of the bottom and to avoid the risk of too much crushing of the joint 3 and the casing elements.

L'étanchéité est assurée par un deuxième joint annulaire 4 O-Ring, de préférence un joint à section circulaire dans un matériau compressible élastiquement, et est comprimé entre le fond 7 et la carrure 6. Le deuxième joint 4 est logé dans une gorge usinée dans la carrure, et ne nécessite donc pas impérativement un fond épais. L'usage de deux joints distincts permet de dissocier les contraintes d'étanchéité et les contraintes liées au positionnement axial et radial du mouvement dans la montre. Le mode de réalisation illustré emploie en outre deux joints annulaires à section circulaire économiques et faciles à utiliser.Sealing is ensured by a second O-ring annular seal, preferably a ring-shaped seal in an elastically compressible material, and is compressed between the bottom 7 and the middle part 6. The second seal 4 is housed in a machined groove in the middle, and therefore does not necessarily require a thick bottom. The use of two separate joints makes it possible to dissociate the sealing stresses and the stresses associated with the axial and radial positioning of the movement in the watch. The illustrated embodiment further employs two economic and easy-to-use circular section annular seals.

Le mouvement 5 est emboîté dans la montre en enfilant tout d'abord le premier cercle 1 par-dessus le mouvement 5, jusqu'à ce qu'il vienne en appui contre la saillie 50. Le cadran 9 est ensuite posé sur le mouvement, en insérant ses pieds dans des trous prévus à cet effet sur la surface supérieur du mouvement. Le premier cercle d'emboîtage 1 est alors coincé entre la face inférieure du cadran et la saillie 50. On procède ensuite à la pose des aiguilles.The movement 5 is fitted into the watch by first threading the first circle 1 over the movement 5, until it bears against the projection 50. The dial 9 is then placed on the movement, by inserting his feet in holes provided for this purpose on the upper surface of the movement. The first casing ring 1 is then wedged between the underside of the dial and the projection 50. It is then proceeded to the laying of the needles.

L'ensemble est ensuite inséré dans la carrure 6 par le fond, jusqu'à ce que le premier cercle 1 vienne en appui contre la portée 60 prévue à cet effet dans la carrure 6.The assembly is then inserted in the middle part 6 by the bottom, until the first circle 1 bears against the span 60 provided for this purpose in the middle part 6.

Le mouvement est maintenu contre le premier cercle d'emboîtage 1 en insérant le deuxième cercle d'emboîtage 2 par-dessous le premier cercle 1 et le mouvement. On l'aligne provisoirement le cercle 2 en faisant correspondre la marque 22 avec une marque correspondante sur le mouvement et/ou sur la carrure, puis définitivement en faisant passer la tige de remontoir par un passage non illustré prévu à cet effet au travers du deuxième cercle d'emboîtage 2.The movement is held against the first casing ring 1 by inserting the second casing ring 2 below the first circle 1 and the movement. It is provisionally aligned with the circle 2 by matching the mark 22 with a corresponding mark on the movement and / or on the middle part, then definitively by passing the winding stem through a non-illustrated passage provided for this purpose through the second casing ring 2.

Le joint annulaire 3 est ensuite inséré en le forçant avec un outil dans la gorge 30. Il permet de maintenir axialement et radialement le deuxième cercle, et donc le mouvement qui ne peut être extrait ou déplacé qu'en le tirant avec une force supérieure à la force de frottement du joint annulaire 3 contre la face interne de la carrure. La forme trapézoïdale de la gorge provoque une compression supplémentaire du joint 3 lorsque le deuxième cercle d'emboîtage est tiré vers le bas de la montre, en sorte qu'une extraction du mouvement sans retirer préalablement le joint 3 est difficile ou même impossible.The annular seal 3 is then inserted by forcing it with a tool in the groove 30. It makes it possible to maintain the second circle axially and radially, and therefore the movement that can be extracted or moved only by pulling it with a force greater than the friction force of the annular seal 3 against the inner face of the middle part. The trapezoidal shape of the groove causes additional compression of the seal 3 when the second casing ring is pulled down the watch, so that extraction of the movement without previously removing the seal 3 is difficult or even impossible.

Le joint d'étanchéité 4 est ensuite inséré dans une gorge prévue à cet effet sous la face inférieure de la carrure, puis le fond 7 est vissé sous la carrure. La nervure 70 en saillie sur la face supérieure du fond 7 vient fermer la gorge 30 en comprimant le joint 3 au fond de cette gorge. L'élasticité naturelle du joint tend à repousser les deux cercles d'emboîtage et le mouvement 5 contre le haut, même lorsque le fond 7 n'est pas entièrement vissé. La position axiale du mouvement est ainsi indépendante du couple de serrage du fond.The seal 4 is then inserted into a groove provided for this purpose under the lower face of the middle part, then the bottom 7 is screwed under the middle part. The rib 70 projecting from the upper face of the bottom 7 closes the groove 30 by compressing the seal 3 at the bottom of this groove. The natural elasticity of the seal tends to push the two casing rings and the movement against the top, even when the bottom 7 is not fully screwed. The axial position of the movement is thus independent of the tightening torque of the bottom.

De cette manière, la présente invention permet un emboîtage extrêmement simple, rapide, stable, robuste et étanche sans avoir besoin de vis ou de brides.In this way, the present invention allows an extremely simple, fast, stable, robust and sealed casing without the need for screws or flanges.

La présente invention concerne aussi des premiers et deuxièmes cercles d'emboîtage et des carrures adaptés au procédé de l'invention.The present invention also relates to the first and second casing rings and the frames adapted to the method of the invention.

Liste des numéros de référenceList of reference numbers

11
Elément d'emboîtage: premier cercle d'emboîtageCasing element: first casing ring
1111
Portée annulaire autour du premier cercle d'emboîtageAnnular range around the first casing ring
22
Elément d'emboîtage: deuxième cercle d'emboîtageCasing element: second casing ring
2020
Face supérieure de la gorge 30, constituée par une première portion du deuxième cercle d'emboîtage 2Upper face of the groove 30, constituted by a first portion of the second casing ring 2
2121
Bord latéral de la gorge 30, constituée par une deuxième portion du deuxième cercle d'emboîtage 2Lateral edge of the groove 30, constituted by a second portion of the second casing ring 2
2222
Marque sur le deuxième cercle d'emboîtageMark on the second casing ring
3three
Elément d'emboîtage : premier joint annulaireCasing element: first annular seal
3030
Gorge annulaireRing groove
44
Deuxième joint annulaireSecond ring seal
55
MouvementMovement
5050
Portion périphérique en saillie du mouvementPeripheral portion projecting from the movement
66
Carrureshoulders
6060
Première portée de la carrureFirst litter of the middle
6262
Bord latéral de la gorge 30, constituée par une deuxième portion de la carrure 6.Lateral edge of the groove 30, constituted by a second portion of the middle part 6.
6363
Deuxième portée de la carrureSecond litter of the middle
77
Fond de la boîte de montreBottom of the watch box
7070
Filetage du fondBottom thread
7171
Nervure en saillie sur la face supérieure du fondRib projecting from the upper side of the bottom
88
GlaceIce cream
99
CadranDial

Claims (16)

  1. Wrist watch comprising
    a frame (6),
    a removable bottom (7),
    a movement (5),
    fixing elements (1, 2, 3) in order to fix the movement in the frame (6) and comprising first fixing elements (1) and second fixing elements (2) between which the movement is fixed, said fixing elements are arranged each over the other and pressed between a portion (60) of the frame (6) and a portion (71) jointed to the removable bottom,
    characterized in that
    the second fixing elements (2) are in direct contact with the first fixing elements (1).
  2. The wrist watch according to claim 1, comprising a first elastic joint (3) in order to press said portion (60) between said fixing elements and an second elastic joint (4) to avoid the infiltrations of water between the bottom (7) and the frame (6).
  3. The wrist watch according to claim 1, comprising the staple of the following elements:
    said frame (6),
    said first fixing elements (1),
    said second fixing elements (2)
    a compressible elastic element (3),
    said removable bottom (7).
  4. The wrist watch according to claim 3, comprising a annular joint (4) different from said elastic compressible element (3), said annular joint is disposed between said frame (6) and said removable bottom (7) to avoid the infiltrations of water between the bottom (7) and the frame (6).
  5. The wrist watch according to claim 3 or 4, said elastic compressible element (3) permits to compensate the variations in height between said portion (60) of the frame and said portion (71) jointed to the bottom (7).
  6. The wrist watch according to claim 5, said elastic compressible element is constituted by a first annular joint (3).
  7. The wrist watch according to claim 6, said first annular joint (3) is compressed axial during the screw of said bottom (7).
  8. The wrist watch according to claim 7, said first annular joint is compressed lodged in a groove (30),
    the upper face (20) and the side walls (21, 62) of the groove are constituted by portions (21) of said fixing elements and of portions (62) of said frame,
    said side walls (21, 62) are non parallel in a way to avoid that the first annular joint (3) escapes, when the bottom (7) is open
    the lower face of the groove (30) is closed by a rip (71), which projects from the bottom (7) when the bottom is closed, in a way to compress said joint in said groove.
  9. The wrist watch according to any of the claims 6 to 8, said first annular joint (3) is compressed radial between a fixing element (2) and the frame (6).
  10. The wrist watch according to claim 9, said fixing elements (1, 2, 3) are maintained in the frame (6), when said bottom (7) is open, only by said compression of said first annular joint.
  11. The wrist watch according to claim 3, said fixing elements (1, 2, 3) are maintained in said frame (6), when said bottom (7) is open, by the compression of said elastic compressible fixing element (3) against a portion of the frame (6).
  12. The wrist watch according to any of the claims 3 to 11, in which the centralising of the movement is secured by said second fixing element (2).
  13. The wrist watch according to any of the claims 1 to 12, said movement (5) comprises a projecting periphery portion (50) maintained between two fixing elements (1, 2).
  14. The wrist watch according to any of the claims 1 to 13, said fixing elements (1, 2, 3) are maintained without screw and without flange only by the compression performed by said bottom (7).
  15. Method of fixing a movement (5) of a wrist watch in a frame, comprising the following steps:
    insertion of a dial, of a first fixing circle (1) and of the movement (5) in said frame,
    insertion of a second fixing circle (2) in said frame, the second fixing circle being in direct contact with the first fixing circle,
    insertion of an elastic compressible element (3),
    screwing of the bottom (7) with the frame (6) in a way to compress the staple constituted of said element (3) the two fixing circles (1, 2) and the movement (5).
  16. The method of claim 15, comprising a step of insertion of a second annular joint (4) between the bottom and said frame (6), the second annular joint is designed to avoid infiltrations of water in said frame.
EP20080152818 2007-03-16 2008-03-17 Watch and casing method Active EP1970779B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH4242007 2007-03-16

Publications (2)

Publication Number Publication Date
EP1970779A1 EP1970779A1 (en) 2008-09-17
EP1970779B1 true EP1970779B1 (en) 2009-09-09

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ID=38446003

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Application Number Title Priority Date Filing Date
EP20080152818 Active EP1970779B1 (en) 2007-03-16 2008-03-17 Watch and casing method

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EP (1) EP1970779B1 (en)
DE (1) DE602008000134D1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009016242U1 (en) * 2009-11-27 2011-04-07 Tarim, Mustafa Clock
EP2458456B1 (en) 2010-11-25 2020-03-18 Rolex Sa Watch with rigid casing and casing method
EP2595007B1 (en) * 2011-11-17 2015-01-07 ETA SA Manufacture Horlogère Suisse Timepiece assembly with centring and attachment of a plate relative to a middle case.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1718942U (en) * 1955-11-23 1956-03-15 Rodi & Wienerberger Ag WATERPROOF WATCH CASE.
CH331282A (en) 1956-09-29 1958-07-15 Omega Brandt & Freres Sa Louis Waterproof watch box
JPS4526137Y1 (en) 1967-08-22 1970-10-12
CH534675A (en) 1969-02-11 1973-03-15 Merck Patent Gmbh Process for the preparation of 9a-fluoro-16-fluoro-methylenprednisolone-21-enanthate
JPS519871A (en) 1974-06-26 1976-01-26 Suwa Seikosha Kk Udedokeiyomojibanno koteikozo
DE3100791A1 (en) 1981-01-13 1982-08-05 Porsche, Ferdinand Alexander, 5662 Gries, Pinzgau Diving watch

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DE602008000134D1 (en) 2009-10-22
EP1970779A1 (en) 2008-09-17

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