EP0555762B1 - Push-button for diver's timepiece - Google Patents

Push-button for diver's timepiece Download PDF

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Publication number
EP0555762B1
EP0555762B1 EP93101689A EP93101689A EP0555762B1 EP 0555762 B1 EP0555762 B1 EP 0555762B1 EP 93101689 A EP93101689 A EP 93101689A EP 93101689 A EP93101689 A EP 93101689A EP 0555762 B1 EP0555762 B1 EP 0555762B1
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EP
European Patent Office
Prior art keywords
tube
push
collar
housing
core
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EP93101689A
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German (de)
French (fr)
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EP0555762A1 (en
Inventor
Marc-André Miche
Gérard Palix
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Swatch Group Management Services AG
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SMH Management Services AG
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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
    • G04B37/08—Hermetic sealing of openings, joints, passages or slits
    • G04B37/10—Hermetic sealing of openings, joints, passages or slits of winding stems
    • G04B37/106—Hermetic sealing of openings, joints, passages or slits of winding stems of push buttons

Definitions

  • the present invention relates to a push button for a timepiece comprising a movable head slidingly mounted on a tube integral with said timepiece, said head partially enveloping this tube and having a central cylindrical core penetrating into the tube, at minus an O-ring seal between the tube and the core and a coil return spring pushing the movable head outwards.
  • Document CH-A-457,291 already describes a waterproof push-piece for a diver's watch comprising an axially movable part, slidingly mounted on a tube fixed to the box body, partially enveloping this tube, and having a central core penetrating into the tube, at less a sealing element between the tube and the core and a return spring pushing the movable part outwards.
  • the pusher of the cited document proposes means making it possible to use weaker springs for equal depths or making it possible to reach greater depths with current springs.
  • the means indicated to achieve this result consist in communicating the annular space between the core and the enveloping part. of the movable part with the outside of the pusher, both by a space left between the enveloping part and the tube and by at least one opening made in the upper part of the enveloping part.
  • the present invention is characterized in that the central core is extended by a cylindrical rod whose diameter is larger than the diameter of the core, the return spring being disposed between said cylindrical rod and said tube so that the spring is located in a sealed area of the push button and the average diameter of the O-ring is smaller than the average diameter of the return spring.
  • the push button 1 comprises a movable head 3 slidingly mounted on a tube 4 secured to the timepiece represented here by its middle part 2.
  • the tube 4 is screwed onto the middle part 2.
  • the lower end of the tube comprises a thread 26 screwed into the thread 27 formed in the middle part 2.
  • a lining 24 is interposed between a shoulder practiced in the circumference of the tube and a housing practiced in the middle.
  • the figures show that the head 3 partially envelops the tube 4 by engagement of the skirt 30 presented by the head on the upper end of the tube.
  • the head 3 has a central cylindrical core 5 of radius r and at least one O-ring seal 6 between the tube 4 and the core 5.
  • the pusher is completed by a coil return spring 7 which pushes the movable head towards the 'outside. When the head is pressed, the spring 7 is compressed and the skirt 30 partially penetrates into a housing 23 which has been made in the middle part 2.
  • the skirt 30 can be embellished with recesses 28 to improve the aesthetic appearance of the head.
  • FIGS. 1 and 2 show that the central core 5 is extended by a cylindrical rod 8 whose diameter is larger than the diameter of the core, the return spring 7 being disposed between the rod 8 and the tube 4.
  • This construction immediately makes it possible to obtain the arrangement sought and discussed in the preamble above, namely a return spring 7 located in a sealed area of the push button and an average diameter of the O-ring 6 being smaller than the average diameter of the return spring 7.
  • the return force of the spring can be reduced from 19.6 N to 3.1 N if we set operates the push button of the present invention.
  • a force of 3.1 Newtons, which is that which the diver will have to develop on the surface, is entirely admissible and of current value.
  • Figure 1 shows that the tube 4 is made in one piece 15.
  • the tube has a first housing 9 in which takes place at least one O-ring 6 (here an additional seal 22 is added to it for safety reasons).
  • the seals 6 and 22 are held axially in the housing 9 by a first ring 10 attached to the tube and a first flange 11 made integrally with the tube.
  • the return spring 7 is held axially in a second housing 12 which is arranged under the first housing 9.
  • the spring 7 is held axially in its housing 12 by a second flange 13 formed integrally with the cylindrical rod 8 and a second ring 14 attached under the tube.
  • the second flange 13 bears against the first flange 11.
  • the cylindrical rod is provided with a blind hole 19 in which the end of the core 5.
  • Figure 2 shows that the tube 4 is made in two parts 16, 17 driven into one another.
  • the first part 16 forms a plug and has a first housing 9 in which two seals 6 and 22 take place. These seals are held axially by a ring 10 attached to the plug and by a first flange 11 made integrally with the plug.
  • the second part 17 forms the tube itself. It comprises a second housing 12 which is disposed under the first housing 9 and in which the spring 7 takes place.
  • the spring is held axially in its housing by a second flange 13 made integrally with the rod 8 and a third flange 18 coming from material under the tube 17.
  • the second flange 13 bears against the first flange 11.
  • the core 5 is provided with a thread 20 which is screwed into a thread 21 formed in the rod 8.
  • the plug 16 is entirely inside the tube 17.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Toys (AREA)
  • Gasket Seals (AREA)

Description

La présente invention est relative à un bouton-poussoir pour pièce d'horlogerie comprenant une tête mobile montée coulissante sur un tube solidaire de ladite pièce d'horlogerie, ladite tête enveloppant partiellement ce tube et présentant un noyau cylindrique central pénétrant dans le tube, au moins un joint torique d'étanchéité entre le tube et le noyau et un ressort de rappel à boudin repoussant la tête mobile vers l'extérieur.The present invention relates to a push button for a timepiece comprising a movable head slidingly mounted on a tube integral with said timepiece, said head partially enveloping this tube and having a central cylindrical core penetrating into the tube, at minus an O-ring seal between the tube and the core and a coil return spring pushing the movable head outwards.

Le document CH-A-457 291 décrit déjà un poussoir étanche pour montre de plongeur comprenant une partie mobile axialement, montée coulissante sur un tube fixé au corps de boîte, enveloppant partiellement ce tube, et présentant un noyau central pénétrant dans le tube, au moins un élément d'étanchéité entre le tube et le noyau et un ressort de rappel repoussant la partie mobile vers l'extérieur.Document CH-A-457,291 already describes a waterproof push-piece for a diver's watch comprising an axially movable part, slidingly mounted on a tube fixed to the box body, partially enveloping this tube, and having a central core penetrating into the tube, at less a sealing element between the tube and the core and a return spring pushing the movable part outwards.

Le même document indique que dans la plupart des poussoirs étanches montés sur les montres de plongeur, il est nécessaire d'utiliser un ressort de rappel assez puissant pour que le poussoir ne soit pas comprimé par les fortes pressions régnant aux grandes profondeurs de plongée. Cette solution a évidemment pour inconvénient de nécessiter une pression manuelle excessivement forte du poussoir lorsque celui-ci est manoeuvré hors de l'eau ou à faible profondeur.The same document indicates that in most waterproof pushers mounted on diver's watches, it is necessary to use a return spring that is strong enough so that the pushbutton is not compressed by the strong pressures prevailing at great diving depths. This solution obviously has the drawback of requiring excessively high manual pressure of the pusher when the latter is operated out of the water or at a shallow depth.

Pour pallier cet inconvénient, le poussoir du document cité propose des moyens permettant d'utiliser des ressorts plus faibles pour des profondeurs égales ou permettant d'atteindre de plus grandes profondeurs avec des ressorts actuels. Les moyens indiqués pour parvenir à ce résultat consistent à faire communiquer l'espace annulaire compris entre le noyau et la partie enveloppante de la partie mobile avec l'extérieur du poussoir, à la fois par un espace laissé entre la partie enveloppante et le tube et par au moins une ouverture pratiquée dans la partie supérieure de la partie enveloppante. Ainsi, lors de la plongée, l'eau pénètre aisément dans ledit espace annulaire et la pression de l'eau à l'intérieur de cet espace augmente pratiquement en même temps que la pression de l'eau à l'extérieur du poussoir, ce qui soulage le ressort de rappel.To overcome this drawback, the pusher of the cited document proposes means making it possible to use weaker springs for equal depths or making it possible to reach greater depths with current springs. The means indicated to achieve this result consist in communicating the annular space between the core and the enveloping part. of the movable part with the outside of the pusher, both by a space left between the enveloping part and the tube and by at least one opening made in the upper part of the enveloping part. Thus, during the dive, the water easily penetrates into said annular space and the pressure of the water inside this space increases practically at the same time as the pressure of the water outside the pusher, this which relieves the return spring.

Les moyens préconisés ci-dessus sont cependant encore insuffisants à réduire la force de rappel du ressort à une valeur convenable, si le poussoir doit résister à une pression hydrostatique très élevée, par exemple celle régnant à une profondeur de 500 mètres, soit d'après la norme ISO 6425, 50 bar (1 bar = 10⁵ Pa = 10⁵ N/m² = 0,1 N/mm²). Cela tient au fait que la section du noyau central de la partie amovible sur laquelle agit la pression hydrostatique est relativement grande, la section à prendre en compte étant celle qui est entourée par le joint torique d'étanchéité. On peut calculer la force F à laquelle doit résister le ressort à la pression P si r est le rayon du noyau : F (N) = π · r² (mm²) · P (N/mm²) · s

Figure imgb0001

où s est un coefficient de sécurité plus grand que 1, par exemple 1,25.The means recommended above are however still insufficient to reduce the return force of the spring to a suitable value, if the pusher must withstand a very high hydrostatic pressure, for example that prevailing at a depth of 500 meters, either according to ISO 6425 standard, 50 bar (1 bar = 10⁵ Pa = 10⁵ N / m² = 0.1 N / mm²). This is due to the fact that the section of the central core of the removable part on which the hydrostatic pressure acts is relatively large, the section to be taken into account being that which is surrounded by the O-ring seal. We can calculate the force F to which the spring must resist pressure P if r is the radius of the nucleus: F (N) = π · r² (mm²) · P (N / mm²) · s
Figure imgb0001
where s is a safety factor greater than 1, for example 1.25.

Dans les poussoirs connus comme celui du document cité, le diamètre du noyau est de l'ordre de 2 mm (d'où r = 1 mm). Si ce poussoir doit résister à une pression de 50 bar, la force de son ressort de rappel devra être de
   F (N) = π · 1² · 5 · 1,25 = 19,6 N qui est la force qu'il faudra exercer sur le poussoir quand la pièce d'horlogerie est hors de l'eau. Cette force est considérable et difficilement admissible. D'où l'idée de la présente invention de diminuer le diamètre du noyau, donc de diminuer le diamètre moyen du joint qui l'entoure. Ceci entraîne à proposer comme corollaire un ressort de rappel dont le diamètre moyen est plus grand que le diamètre moyen du joint, car sans cela, le ressort ne pourrait respecter la règle de construction qui veut que le diamètre moyen du ressort soit égal ou supérieur à 6 fois le diamètre du fil. S'agissant ici d'une montre de plongeur, on postule comme nécessaire le fait que le ressort de rappel soit situé dans une zone étanche du poussoir pour éviter la corrosion du ressort.In pushers known as that of the cited document, the diameter of the core is of the order of 2 mm (hence r = 1 mm). If this plunger must resist a pressure of 50 bar, the force of its return spring must be
F (N) = π · 1² · 5 · 1.25 = 19.6 N which is the force that must be exerted on the pusher when the timepiece is out of the water. This force is considerable and hardly acceptable. Hence the idea of the present invention to decrease the diameter of the core, therefore to decrease the average diameter of the seal which surrounds it. This leads to proposing as a corollary a return spring whose average diameter is larger than the average diameter of the joint, because without this, the spring would not be able to comply with the construction rule which requires that the average diameter of the spring be equal to or greater than 6 times the diameter of the wire. As this is a diver's watch, we postulate as necessary the fact that the return spring is located in a sealed area of the pusher to avoid corrosion of the spring.

En conséquence de quoi la présente invention est caractérisée par le fait que le noyau central est prolongé par une tige cylindrique dont le diamètre est plus grand que le diamètre du noyau, le ressort de rappel étant disposé entre ladite tige cylindrique et ledit tube de sorte que le ressort se trouve situé dans une zone étanche du bouton-poussoir et que le diamètre moyen du joint torique est plus petit que le diamètre moyen du ressort de rappel.Consequently, the present invention is characterized in that the central core is extended by a cylindrical rod whose diameter is larger than the diameter of the core, the return spring being disposed between said cylindrical rod and said tube so that the spring is located in a sealed area of the push button and the average diameter of the O-ring is smaller than the average diameter of the return spring.

L'invention va être comprise maintenant à la lecture de la description qui suit et du dessin qui l'illustre à titre d'exemple, ou deux modes d'exécution de l'invention sont décrits.

  • la figure 1 montre un premier mode d'exécution de l'invention, le bouton-poussoir étant représenté en coupe et en plan selon que l'on considère respectivement la gauche et la droite de la figure, et
  • la figure 2 montre un second mode d'exécution de l'invention, le bouton-poussoir étant représenté selon les mêmes critères que ceux de la figure 1.
The invention will now be understood on reading the description which follows and the drawing which illustrates it by way of example, or two embodiments of the invention are described.
  • FIG. 1 shows a first embodiment of the invention, the push-button being shown in section and in plan depending on whether one considers the left and the right of the figure respectively, and
  • FIG. 2 shows a second embodiment of the invention, the push button being represented according to the same criteria as those of FIG. 1.

Le principe de base de l'invention est apparent à la fois dans les figures 1 et 2. Dans ces figures, le bouton-poussoir 1 comporte une tête mobile 3 montée coulissante sur un tube 4 solidaire de la pièce d'horlogerie représentée ici par sa carrure 2. De manière connue en soi, le tube 4 est vissé sur la carrure 2. A cet effet, l'extrémité inférieure du tube comporte un filet 26 vissé dans le taraudage 27 pratiqué dans la carrure 2. Afin d'assurer l'étanchéité du tube 4 par rapport à la carrure 2, on interpose une garniture 24 entre un épaulement pratiqué dans le pourtour du tube et un logement pratiqué dans la carrure.The basic principle of the invention is apparent both in FIGS. 1 and 2. In these figures, the push button 1 comprises a movable head 3 slidingly mounted on a tube 4 secured to the timepiece represented here by its middle part 2. In a manner known per se, the tube 4 is screwed onto the middle part 2. To this end, the lower end of the tube comprises a thread 26 screwed into the thread 27 formed in the middle part 2. In order to ensure the sealing of the tube 4 relative to the middle part 2, a lining 24 is interposed between a shoulder practiced in the circumference of the tube and a housing practiced in the middle.

Les figures montrent que la tête 3 enveloppe partiellement le tube 4 par engagement de la jupe 30 présenté par la tête sur l'extrémité supérieure du tube. La tête 3 présente un noyau cylindrique central 5 de rayon r et au moins un joint torique d'étanchéité 6 entre le tube 4 et le noyau 5. Le poussoir est complété par un ressort de rappel à boudin 7 qui repousse la tête mobile vers l'extérieur. Quand on presse sur la tête, on comprime le ressort 7 et la jupe 30 pénètre partiellement dans un logement 23 qui a été pratiqué dans la carrure 2. La jupe 30 peut être agrémentée de creusures 28 pour améliorer l'aspect esthétique de la tête.The figures show that the head 3 partially envelops the tube 4 by engagement of the skirt 30 presented by the head on the upper end of the tube. The head 3 has a central cylindrical core 5 of radius r and at least one O-ring seal 6 between the tube 4 and the core 5. The pusher is completed by a coil return spring 7 which pushes the movable head towards the 'outside. When the head is pressed, the spring 7 is compressed and the skirt 30 partially penetrates into a housing 23 which has been made in the middle part 2. The skirt 30 can be embellished with recesses 28 to improve the aesthetic appearance of the head.

Selon une caractéristique de l'invention, les figures 1 et 2 montrent que le noyau central 5 est prolongé par une tige cylindrique 8 dont le diamètre est plus grand que le diamètre du noyau, le ressort de rappel 7 étant disposé entre la tige 8 et le tube 4. Cette construction permet immédiatement d'obtenir l'arrangement recherché et discuté dans le préambule ci-dessus, à savoir un ressort de rappel 7 se trouvant situé dans une zone étanche du bouton-poussoir et un diamètre moyen du joint torique 6 étant plus petit que le diamètre moyen du ressort de rappel 7.According to a characteristic of the invention, FIGS. 1 and 2 show that the central core 5 is extended by a cylindrical rod 8 whose diameter is larger than the diameter of the core, the return spring 7 being disposed between the rod 8 and the tube 4. This construction immediately makes it possible to obtain the arrangement sought and discussed in the preamble above, namely a return spring 7 located in a sealed area of the push button and an average diameter of the O-ring 6 being smaller than the average diameter of the return spring 7.

On comprend que l'arrangement qui vient d'être décrit permet de diminuer le rayon r du noyau cylindrique central 5 et partant, la sollicitation de la pression hydrostatique agissant sur le poussoir. Si l'on reprend la formule (1) donnée plus haut et si l'on utilise un noyau 5 dont le rayon est de 0,4 mm, on trouvera une force de rappel F du ressort égale à
   F (N) = π · 0,4² · 5 · 1,25 = 3,1 N, la pression hydrostatique P et la sécurité s étant prises aux mêmes valeurs de 50 bar et 1,25.It is understood that the arrangement which has just been described makes it possible to reduce the radius r of the central cylindrical core 5 and therefore the stress of the hydrostatic pressure acting on the pusher. If we use the formula (1) given above and if we use a core 5 whose radius is 0.4 mm, we will find a return force F of the spring equal to
F (N) = π · 0.4² · 5 · 1.25 = 3.1 N, the hydrostatic pressure P and the safety being taken at the same values of 50 bar and 1.25.

Ainsi pour une pression totale de 50 bar, soit une profondeur de plongée de 500 mètres, la force de rappel du ressort peut être ramenée de 19,6 N à 3,1 N si l'on met en oeuvre le bouton-poussoir de la présente invention. Une force de 3,1 Newtons, qui est celle que devra développer le plongeur en surface, est tout à fait admissible et de valeur courante. Il n'y a non plus pas de difficulté à fabriquer un tel ressort et de le loger dans l'espace qui est mis à disposition entre la tige 8 et le tube 4.Thus for a total pressure of 50 bar, i.e. a diving depth of 500 meters, the return force of the spring can be reduced from 19.6 N to 3.1 N if we set operates the push button of the present invention. A force of 3.1 Newtons, which is that which the diver will have to develop on the surface, is entirely admissible and of current value. There is also no difficulty in manufacturing such a spring and in housing it in the space which is made available between the rod 8 and the tube 4.

Reste à examiner dans le détail les constructions données en exemple aux figures 1 et 2.It remains to examine in detail the constructions given as examples in Figures 1 and 2.

La figure 1 montre que le tube 4 est réalisée en une seule pièce 15. Le tube comporte un premier logement 9 dans lequel prend place au moins un joint torique 6 (ici un joint supplémentaire 22 lui est ajouté pour des raisons de sécurité). Les joints 6 et 22 sont maintenus axialement dans le logement 9 par une première bague 10 rapportée sur le tube et une première collerette 11 venue de matière avec le tube. Pour sa part, le ressort de rappel 7 est maintenu axialement dans un second logement 12 qui est disposé sous le premier logement 9. Le ressort 7 est maintenu axialement dans son logement 12 par une seconde collerette 13 venue de matière avec la tige cylindrique 8 et une seconde bague 14 rapportée sous le tube. Quand le poussoir est au repos, situation reflétée par la figure 1, la seconde collerette 13 s'appuie contre la première collerette 11. A remarquer encore que la tige cylindrique est munie d'un trou borgne 19 dans lequel est chassée l'extrémité du noyau 5.Figure 1 shows that the tube 4 is made in one piece 15. The tube has a first housing 9 in which takes place at least one O-ring 6 (here an additional seal 22 is added to it for safety reasons). The seals 6 and 22 are held axially in the housing 9 by a first ring 10 attached to the tube and a first flange 11 made integrally with the tube. For its part, the return spring 7 is held axially in a second housing 12 which is arranged under the first housing 9. The spring 7 is held axially in its housing 12 by a second flange 13 formed integrally with the cylindrical rod 8 and a second ring 14 attached under the tube. When the pusher is at rest, situation reflected in FIG. 1, the second flange 13 bears against the first flange 11. It should also be noted that the cylindrical rod is provided with a blind hole 19 in which the end of the core 5.

Pour assembler le poussoir de la figure 1, on commence par introduire dans le logement 9 les joints toriques 6 et 22. On ferme ensuite le logement 9 au moyen de la bague 10 qu'on chasse, sertit, colle ou soude dans une cuvette pratiquée dans le tube 4. Par le dessous du tube 4, on introduit la tige 8 sur laquelle on glisse le ressort 7. On ferme alors le logement 12 au moyen de la bague 14 qu'on chasse, sertit, colle ou soude dans une cuvette pratiquée dans le tube 4. Enfin, dernière opération, on met en place la tête 3 par chassage de son noyau central dans le trou 19 de la tige 8.To assemble the pusher of Figure 1, we first introduce into the housing 9 the O-rings 6 and 22. Then close the housing 9 by means of the ring 10 which is chased, crimped, glue or soda in a bowl practiced in the tube 4. From the underside of the tube 4, the rod 8 is introduced onto which the spring is slid 7. The housing 12 is then closed by means of the ring 14 which is chased, crimped, glued or welded in a bowl practiced in the tube 4. Finally, last operation, the head 3 is put in place by driving its central core into the hole 19 of the rod 8.

La figure 2 montre que le tube 4 est réalisé en deux parties 16, 17 chassées l'une dans l'autre. La première partie 16 forme bouchon et comporte un premier logement 9 dans lequel prennent place deux joints 6 et 22. Ces joints sont maintenus axialement par une bague 10 rapportée sur le bouchon et par une première collerette 11 venue de matière avec le bouchon. La second partie 17 forme le tube proprement dit. Elle comporte un second logement 12 qui est disposé sous le premier logement 9 et dans lequel prend place le ressort 7. Le ressort est maintenu axialement dans son logement par une seconde collerette 13 venue de matière avec la tige 8 et une troisième collerette 18 venue de matière sous le tube 17. Comme dans la figure 1, quand le poussoir est au repos, situation reflétée par la figure 2, la seconde collerette 13 s'appuie contre la première collerette 11. Dans le cas de la figure 2, le noyau 5 est muni d'un filetage 20 qui est vissé dans un taraudage 21 pratiqué dans la tige 8.Figure 2 shows that the tube 4 is made in two parts 16, 17 driven into one another. The first part 16 forms a plug and has a first housing 9 in which two seals 6 and 22 take place. These seals are held axially by a ring 10 attached to the plug and by a first flange 11 made integrally with the plug. The second part 17 forms the tube itself. It comprises a second housing 12 which is disposed under the first housing 9 and in which the spring 7 takes place. The spring is held axially in its housing by a second flange 13 made integrally with the rod 8 and a third flange 18 coming from material under the tube 17. As in FIG. 1, when the pusher is at rest, situation reflected in FIG. 2, the second flange 13 bears against the first flange 11. In the case of FIG. 2, the core 5 is provided with a thread 20 which is screwed into a thread 21 formed in the rod 8.

Cette construction qui diffère légèrement de celle montrée en figure 1, conduit à un assemblage différent du poussoir. On commence par introduire dans le logement 9 du bouchon 16 les joints toriques 6 et 22. On ferme ensuite le logement 9 au moyen de la bague 10 qu'on chasse, sertit, colle ou soude dans une cuvette pratiquée dans le bouchon 16. On introduit dans le tube 17 la tige 8 entourée du ressort 7. On chasse le bouchon 16 dans le tube 17. Enfin on visse la tête 3 par son noyau 5 dans la tige 8.This construction, which differs slightly from that shown in FIG. 1, leads to a different assembly of the pusher. We start by introducing into the housing 9 of the plug 16 the O-rings 6 and 22. Then close the housing 9 by means of the ring 10 which is removed, crimped, glue or soda in a bowl made in the plug 16. We introduced into the tube 17 the rod 8 surrounded by the spring 7. The plug 16 is driven into the tube 17. Finally, the head 3 is screwed by its core 5 into the rod 8.

A propos de la figure 2, on note que le bouchon 16 est entièrement intérieur au tube 17. En variante, on pourrait avoir un bouchon qui coiffe le tube, la jupe de ce bouchon étant alors disposée entre la jupe 30 de la tête 3 et la périphérie du tube 17.With reference to FIG. 2, it is noted that the plug 16 is entirely inside the tube 17. As a variant, there could be a plug which covers the tube, the skirt of this plug then being disposed between the skirt 30 of the head 3 and the periphery of the tube 17.

Claims (6)

  1. Push-button (1) for a timepiece comprising a movable head (3) slidingly mounted on a tube (4) fixed to said time-piece, said head partially enveloping said tube and exhibiting a central cylindrical core (5) penetrating into the tube, at least one O-ring seal (6) between the tube and the core, and a helical return spring (7) urging the movable head towards the exterior, characterized by the fact that the central core is extended by a cylindrical stem (8) the diameter of which is greater than the diameter of the core, the return spring being arranged between said cylindrical stem and said tube in a manner such that the spring is located in a sealed zone of the push-button and the mean diameter of the O-ring seal is less than the mean diameter of the return spring.
  2. Push-button according to claim 1, characterized by the fact that the tube (4) is formed as a single piece (15) and includes a first housing (9) in which the O-ring seal (6) is placed, such latter being axially maintained therein by a first ring (10) mounted on the tube and a first collar (11) integrally formed with the tube, and a second housing (12) located below the first housing and in which the spring (7) is placed, such latter being axially maintained therein by a second collar (13) integrally formed with the cylindrical stem and by a second ring (14) mounted below the tube, said second collar bearing against said first collar when the push-button is relaxed.
  3. Push-button according to claim 1, characterized by the fact that the tube (4) is formed in two parts (16, 17) driven into one another, the first part (16) forming a stopper and including a first housing (9) in which the O-ring seal (6) is placed, such latter being axially maintained therein by a ring (10) mounted on the stopper and by a first collar (11) integrally formed with the stopper, the second part (17) forming the tube as such and including a second housing (12) located below the first housing and in which the spring (7) is placed, such latter being axially maintained therein by a second collar (13) integrally formed with the cylindrical stem and by a third collar (18) integrally formed below the tube, said second collar bearing against said first collar when the push-button is relaxed.
  4. Push-button according to claim 1, characterized by the fact that the cylindrical core (5) is driven into a blind hole (19) formed in the cylindrical stem (8).
  5. Push-button according to claim 1, characterized by the fact that the cylindrical core (5) is provided with a thread (20) screwed into a threading (21) formed in the cylindrical stem (8).
  6. Push-button according to claim 1, characterized by the fact that it includes two O-ring seals (6, 22).
EP93101689A 1992-02-07 1993-02-04 Push-button for diver's timepiece Expired - Lifetime EP0555762B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH355/92 1992-02-07
CH355/92A CH682874B5 (en) 1992-02-07 1992-02-07 Push button for coin diver watches.

Publications (2)

Publication Number Publication Date
EP0555762A1 EP0555762A1 (en) 1993-08-18
EP0555762B1 true EP0555762B1 (en) 1995-12-13

Family

ID=4185136

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93101689A Expired - Lifetime EP0555762B1 (en) 1992-02-07 1993-02-04 Push-button for diver's timepiece

Country Status (9)

Country Link
US (1) US5299179A (en)
EP (1) EP0555762B1 (en)
JP (1) JP3278813B2 (en)
CN (1) CN1040916C (en)
CH (1) CH682874B5 (en)
DE (1) DE69300986T2 (en)
ES (1) ES2083785T3 (en)
HK (1) HK1007811A1 (en)
TW (1) TW209198B (en)

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CH687429B5 (en) * 1994-09-01 1997-06-13 Werthanor Sa Encapsulated pusher.
FR2751765B1 (en) * 1996-07-23 1998-09-18 Ebauchesfabrik Eta Ag PUSH BUTTON AND ASSEMBLY METHOD THEREOF
AU1348899A (en) * 1998-12-15 2000-07-03 Bunter Sa Timepiece with sound mechanism
EP1280023B1 (en) * 2001-07-28 2008-12-31 Richemont International S.A. Waterproof crown for watch case
JP3929859B2 (en) * 2002-09-06 2007-06-13 セイコーインスツル株式会社 Cell phone clock
CH697143A5 (en) * 2004-01-23 2008-05-15 Richemont Int Sa Automatic adjusting device, in particular for a watch.
EP1850194A1 (en) * 2006-04-25 2007-10-31 Piguet, Frédéric Diver's watch
EP2107432B1 (en) * 2008-04-01 2011-06-29 Montres Rado S.A. Pushbutton control device for a watch
US9086717B2 (en) 2012-02-13 2015-07-21 Invicta Watch Company Of America, Inc. Interface for actuating a device
JP6034216B2 (en) * 2013-02-19 2016-11-30 セイコーインスツル株式会社 Waterproof equipment and portable watches
GB2524977B (en) * 2014-04-07 2020-01-22 Johnson Outdoors Inc Intuitive operable dive computer
EP3339966B1 (en) * 2016-12-23 2020-06-24 Rolex Sa Push-button for a timepiece
CH713979A2 (en) * 2017-07-14 2019-01-15 Swatch Group Res & Dev Ltd Security valve for watch.
CN107976891A (en) * 2018-01-17 2018-05-01 出门问问信息科技有限公司 A kind of waterproof construction and intelligent watch
EP3742235B1 (en) * 2019-05-23 2022-01-26 Meco S.A. Push button system, and timepiece comprising same
CN113188608A (en) * 2021-05-26 2021-07-30 深圳易如潜水装备有限公司 Diving computer and method for detecting diving state

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Also Published As

Publication number Publication date
HK1007811A1 (en) 1999-04-23
DE69300986T2 (en) 1996-08-29
CN1040916C (en) 1998-11-25
ES2083785T3 (en) 1996-04-16
CH682874B5 (en) 1994-06-15
US5299179A (en) 1994-03-29
DE69300986D1 (en) 1996-01-25
TW209198B (en) 1993-07-11
CN1075218A (en) 1993-08-11
EP0555762A1 (en) 1993-08-18
CH682874GA3 (en) 1993-12-15
JP3278813B2 (en) 2002-04-30
JPH05281372A (en) 1993-10-29

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