EP0392307B1 - Push-button, in particular for watch-case - Google Patents

Push-button, in particular for watch-case Download PDF

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Publication number
EP0392307B1
EP0392307B1 EP90106258A EP90106258A EP0392307B1 EP 0392307 B1 EP0392307 B1 EP 0392307B1 EP 90106258 A EP90106258 A EP 90106258A EP 90106258 A EP90106258 A EP 90106258A EP 0392307 B1 EP0392307 B1 EP 0392307B1
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EP
European Patent Office
Prior art keywords
wall
push
stem
button according
hole
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
Application number
EP90106258A
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German (de)
French (fr)
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EP0392307A1 (en
Inventor
Laurent Kaelin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ETA SA Manufacture Horlogere Suisse
Original Assignee
Eta SA Fabriques dEbauches
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Application filed by Eta SA Fabriques dEbauches filed Critical Eta SA Fabriques dEbauches
Priority to AT90106258T priority Critical patent/ATE78111T1/en
Publication of EP0392307A1 publication Critical patent/EP0392307A1/en
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Publication of EP0392307B1 publication Critical patent/EP0392307B1/en
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B37/00—Cases
    • G04B37/22—Materials or processes of manufacturing pocket watch or wrist watch cases
    • G04B37/225—Non-metallic cases
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B3/00—Normal winding of clockworks by hand or mechanically; Winding up several mainsprings or driving weights simultaneously
    • G04B3/04—Rigidly-mounted keys, knobs or crowns
    • G04B3/048—Operation exclusively by axial movement of a push-button, e.g. for chronographs
    • 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 invention relates to a push button mounted in a wall for the transmission of a mechanical force through the wall, the latter possibly in particular being the wall of a watch case.
  • This push button comprises a three-part rod, a return spring, and a seal placed directly in a hole in a wall of a support receiving the push button.
  • the hole opens inside the support by a constriction.
  • the internal part of the rod passes through this constriction and ends in a flange with a cylindrical external surface having a diameter substantially greater than the diameter of the constriction, and this internal part is split axially. So when the rod is inserted into the hole in the wall, the inner part with its flange deforms radially by elastic pinching in the passage of the throttle, after which it returns to its initial shape, the flange ensuring axial retention of the rod.
  • machining of such a slot may form burrs which can hinder the establishment of the rod so that it is necessary to provide an additional deburring operation.
  • the object of the invention is therefore to remedy the drawbacks of the above-mentioned prior art and to provide a push button which is simple to produce and easy to assemble.
  • the subject of the invention is a push button mounted in a wall to trigger an action on a first side of the wall from a second side thereof, the wall possibly being that of a watch case, said wall having a hole having at least a first portion of a first diameter opening out from said first side and extending over a limited length to define a neck and a second portion of a second diameter greater than the first diameter and emerging from said second side, said push button comprising a rod ending on the first side of the wall by a bead and means for returning the rod to a rest position.
  • the wall is made of a synthetic material
  • the neck is elastically deformable and the bead of the rod is non-deformable, and has an intermediate diameter between the first and second diameters of the hole so that when the rod is introduced in the hole in the wall, the bead elastically deforms the neck which, after the passage of the bead returns to its initial shape, thus ensuring axial positioning of the rod in the wall.
  • the bead of the rod is connected via a part of rod of small diameter to another part of rod adjusted to slip in the second portion of the hole to ensure the guidance of the rod in the wall.
  • This watch case includes a middle part 2 which comes in one piece with the box.
  • the wall of the middle part 2 is provided with a hole 3 opening into the interior of the case.
  • This hole 3 comprises a first portion 4 having a first diameter D1 which opens directly inside the box, and a second portion 5 having a second diameter D2 greater than the first and opening out of the box.
  • the middle part 2 is provided with a push button 6 allowing the transmission of a mechanical force from the outside of the box to the inside, for example for actuating a contact C for controlling the display of a information such as date or the like.
  • This push button essentially comprises a rod 7, a crown 8, a return spring 9 for bringing back the push button in a rest position (shown in the figure) and a seal 10.
  • the middle part is made of synthetic material, and preferably the material used has a structure having a wide area of elastic deformation.
  • the material used has a structure having a wide area of elastic deformation.
  • amorphous type synthetic materials and more particularly the family of acryl butadiene styrene commonly referred to as ABS.
  • the first portion 4 of the hole 3 extends over a limited length L and defines a neck 11.
  • the rod 7 comprises an intermediate portion 12 which is solid and non-deformable ending in a bead 13 having a larger diameter. to the diameter D1 of the first portion 4 of the hole 3 and less than the diameter D2 of the second portion 5.
  • the intermediate portion 12 has a diameter D3 less than the diameter D1 of the first portion 4.
  • the bead 13 exerts pressure on the neck 11 so that it deforms it elastically and allows it to pass, after which the neck returns to its original shape while ensuring axial positioning of the rod.
  • the limited length of the first portion 4 defining the neck is chosen as a function of the diameter of the latter and preferably the ratio L / D1 will be between 0.3 and 0.4.
  • the intermediate part 12 of the rod 7 is connected to a part of the rod 14 slidingly adjusted on the second portion 5 of the hole 3 to ensure correct guidance of the rod 7 and therefore of the button push in the middle.
  • This rod portion 14 comprises an annular housing 15 which receives the seal 10 of the "O ring" type in the example shown. It should be noted that in this embodiment, and advantageously the seal is not subjected to compression stresses as is the case in the aforementioned prior art where it is interposed between two movable elements and where it participates in the transmission of the force on the button. It therefore follows that its life is significantly increased.
  • the bead 13 will be produced with a diameter identical to that of the part of the rod 14 serving for guiding.
  • the middle part 2 further comprises an annular groove 16 centered on the hole 3.
  • This groove 16 partially receives the crown 8 in the rest state, in order to prevent the crown from being extracted from its housing and consequently that the pusher 6 is detached from the middle part 2 in the case of untimely application of a force applied to the base of the crown 8.
  • the bottom 17 of the groove 16 defines a bearing surface for one end 18 of the return spring 9.
  • the opposite end 19 of the latter bears against the bottom 20 of an annular groove 21 formed in the crown 8 defining an annular skirt and thus forming a housing for receiving the return spring.
  • the crown 8 is driven out on an end piece 22 of the rod 7 and it is supported on a flange 23 defining a shoulder 24.
  • the crown and the rod can be produced in one piece to reduce the number of pieces in the set.
  • the invention is not limited to the application of the push button to a watch case. It can, in fact, advantageously find application in all cases where a mechanical force must be transmitted through a wall of synthetic material by a push button.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electric Clocks (AREA)
  • Push-Button Switches (AREA)
  • Switches With Compound Operations (AREA)

Abstract

The watch-case (1) made of plastic material equipped with a hole (3) in which a push-button (6) can slide. The end (12) of the rod (7) of the push-button comprises a bead (13) whose diameter is greater than that of the neck (11) made at the end of the hole emerging inside the case (1). When the rod (7) is introduced into the hole (3) of the wall (2), the bead (13) deforms the neck (11) elastically, the latter subsequently reassuming its initial shape and ensuring an axial positioning of the rod (7).

Description

L'invention concerne un bouton poussoir monté dans une paroi pour la transmission d'un effort mécanique à travers la paroi, celle-ci pouvant notamment être la paroi d'une boîte de montre.The invention relates to a push button mounted in a wall for the transmission of a mechanical force through the wall, the latter possibly in particular being the wall of a watch case.

On connaît déjà du brevet CH 594 924 un bouton poussoir pour pièce d'horlogerie comprenant une tige, un ressort de rappel et une garniture d'étanchéité, l'ensemble étant inséré dans une douille de guidage destinée à être fixée dans la boîte de la pièce d'horlogerie. La partie de la douille située à l'intérieur de cette boîte se termine par une ouverture délimitée par un rebord annulaire de forme tronconique. Ce rebord est élastique et permet le passage à travers l'ouverture de la partie extrême de la tige. Cette partie extrême présente un diamètre extérieur sensiblement supérieur au diamètre de l'ouverture. Ainsi, la tige peut être positionnée axialement dans la douille, le ressort de rappel étant disposé concentriquement sur la tige et prenant directement appui sur la garniture d'étanchéité, elle-même emprisonnée entre le ressort et le rebord d'extrémité de la douille.There is already known from patent CH 594 924 a push button for a timepiece comprising a rod, a return spring and a seal, the assembly being inserted in a guide bush intended to be fixed in the box of the timepiece. The part of the socket located inside this box ends with an opening delimited by an annular rim of frustoconical shape. This rim is elastic and allows passage through the opening of the end part of the rod. This end part has an outer diameter substantially greater than the diameter of the opening. Thus, the rod can be positioned axially in the sleeve, the return spring being arranged concentrically on the rod and directly resting on the seal, itself trapped between the spring and the end flange of the sleeve.

Cette construction fonctionne de manière satisfaisante, mais présente notamment l'inconvénient de nécessiter un nombre de manipulations et d'opérations de préassemblage rendant impossible une fabrication de tels boutons poussoirs à bas prix.This construction works satisfactorily, but in particular has the drawback of requiring a number of manipulations and pre-assembly operations making it impossible to manufacture such push buttons at low cost.

Le bouton poussoir décrit dans le document CH 621 453 constitue une tentative de remédier à l'inconvénient cité plus haut.The push button described in the document CH 621 453 constitutes an attempt to remedy the drawback mentioned above.

Ce bouton poussoir comporte une tige en trois parties, un ressort de rappel, et une garniture d'étanchéité disposée directement dans un trou ménagé dans une paroi d'un support recevant le bouton poussoir. Le trou débouche à l'intérieur du support par un étranglement. La partie intérieure de la tige passe à travers cet étranglement et se termine par une collerette à surface extérieure cylindrique ayant un diamètre sensiblement supérieur au diamètre de l'étranglement, et cette partie intérieure est fendue axialement. Ainsi, lorsque la tige est insérée dans le trou de la paroi, la partie intérieure avec sa collerette se déforme radialement par pincement élastique au passage de l'étranglement, après quoi elle reprend sa forme initiale, la collerette assurant une retenue axiale de la tige.This push button comprises a three-part rod, a return spring, and a seal placed directly in a hole in a wall of a support receiving the push button. The hole opens inside the support by a constriction. The internal part of the rod passes through this constriction and ends in a flange with a cylindrical external surface having a diameter substantially greater than the diameter of the constriction, and this internal part is split axially. So when the rod is inserted into the hole in the wall, the inner part with its flange deforms radially by elastic pinching in the passage of the throttle, after which it returns to its initial shape, the flange ensuring axial retention of the rod.

Cette construction a l'avantage de supprimer l'utilisation de la douille de guidage prévue dans la construction proposée dans le brevet CH 594 924. Toutefois, elle présente encore des inconvénients. En effet, une tige en trois parties prévue dans le brevet CH 621 453 doit être usinée sur une décolleteuse et pour usiner ensuite la fente axiale dans la partie intérieure de la tige, il est nécessaire d'arrêter la décolleteuse et d'utiliser un outillage spécial. Il en résulte donc une augmentation du temps et du coût de fabrication.This construction has the advantage of eliminating the use of the guide bush provided for in the construction proposed in patent CH 594 924. However, it still has drawbacks. Indeed, a three-part rod provided in patent CH 621 453 must be machined on a lathe and to machine the axial slot in the inner part of the rod, it is necessary to stop the lathe and use a tool special. This therefore results in an increase in manufacturing time and cost.

De plus, l'usinage d'une telle fente risque de former des bavures pouvant gêner la mise en place de la tige de sorte qu'il faut prévoir une opération supplémentaire d'ébavurage.In addition, the machining of such a slot may form burrs which can hinder the establishment of the rod so that it is necessary to provide an additional deburring operation.

L'invention a donc pour but de remédier aux inconvénients de l'art antérieur suscité et de fournir un bouton poussoir simple à réaliser et facile à monter.The object of the invention is therefore to remedy the drawbacks of the above-mentioned prior art and to provide a push button which is simple to produce and easy to assemble.

A cet effet, l'invention a pour objet un bouton poussoir monté dans une paroi pour déclencher une action d'un premier côté de la paroi à partir d'un second côté de celle-ci, la paroi pouvant notamment être celle d'une boîte de montre, ladite paroi présentant un trou ayant au moins une première portion d'un premier diamètre débouchant dudit premier côté et s'étendant sur une longueur limitée pour définir un col et une seconde portion d'un second diamètre supérieur au premier diamètre et débouchant dudit second côté, ledit bouton poussoir comprenant une tige se terminant du premier côté de la paroi par un bourrelet et des moyens de rappel de la tige dans une position de repos.To this end, the subject of the invention is a push button mounted in a wall to trigger an action on a first side of the wall from a second side thereof, the wall possibly being that of a watch case, said wall having a hole having at least a first portion of a first diameter opening out from said first side and extending over a limited length to define a neck and a second portion of a second diameter greater than the first diameter and emerging from said second side, said push button comprising a rod ending on the first side of the wall by a bead and means for returning the rod to a rest position.

Conformément à l'invention, la paroi est réalisée en une matière synthétique, le col est déformable élastiquement et le bourrelet de la tige est indéformable, et présente un diamètre intermédiaire entre les premier et second diamètres du trou de sorte que lorsque la tige est introduite dans le trou de la paroi, le bourrelet déforme élastiquement le col qui après le passage du bourrelet reprend sa forme initiale assurant ainsi un positionnement axial de la tige dans la paroi.According to the invention, the wall is made of a synthetic material, the neck is elastically deformable and the bead of the rod is non-deformable, and has an intermediate diameter between the first and second diameters of the hole so that when the rod is introduced in the hole in the wall, the bead elastically deforms the neck which, after the passage of the bead returns to its initial shape, thus ensuring axial positioning of the rod in the wall.

Grâce à ces caractéristiques on utilise avantageusement les propriétés d'élasticité intrinsèque à la matière synthétique afin de réaliser un bouton poussoir indémontable alliant la fiabilité à la simplicité de réalisation, et cela tout en diminuant son prix de revient.Thanks to these characteristics, it is advantageous to use the properties of elasticity intrinsic to the synthetic material in order to produce a non-removable push button combining reliability with simplicity of construction, and this while reducing its cost price.

Selon une caractéristique avantageuse de l'invention, le bourrelet de la tige est raccordé par l'intermédiaire d'une partie de tige de faible diamètre à une autre partie de tige ajustée à glissement dans la seconde portion du trou pour assurer le guidage de la tige dans la paroi.According to an advantageous characteristic of the invention, the bead of the rod is connected via a part of rod of small diameter to another part of rod adjusted to slip in the second portion of the hole to ensure the guidance of the rod in the wall.

Grâce à cette caractéristique, on évite la création d'un jeu latéral de la tige dans la paroi, si bien que l'on supprime tout risque d'agrandissement du col après un usage prolongé du poussoir dans de mauvaises conditions de guidage de la tige. Il en résulte donc qu'une désolidarisation intempestive du bouton poussoir de la paroi est évitée et, par conséquent, que la durée de vie du poussoir est augmentée.Thanks to this characteristic, the creation of a lateral clearance of the rod in the wall is avoided, so that any risk of enlargement of the neck is eliminated after prolonged use of the pusher under poor rod guiding conditions. . It therefore follows that an untimely separation of the push button from the wall is avoided and, consequently, that the lifespan of the push button is increased.

D'autres caractéristiques et avantages apparaîtront à la lecture de la description qui suit d'un mode de réalisation non limitatif de l'invention en liaison avec l'unique figure représentant une coupe partielle d'un exemple de réalisation d'un bouton poussoir selon l'invention appliqué dans une boîte de montre.Other characteristics and advantages will appear on reading the following description of a nonlimiting embodiment of the invention in conjunction with the single figure showing a partial section of an example of embodiment of a push button according to the invention applied in a watch case.

En se référant à la figure, on voit une boîte de montre désignée généralement par la référence numérique 1. Cette boîte de montre comprend une carrure 2 venue d'une seule pièce avec la boîte. La paroi de la carrure 2 est munie d'un trou 3 débouchant à l'intérieur de la boîte. Ce trou 3 comprend une première portion 4 ayant un premier diamètre D1 qui débouche directement à l'intérieur de la boîte, et une seconde portion 5 ayant un second diamètre D2 supérieur au premier et débouchant à l'extérieur de la boîte.Referring to the figure, we see a watch case generally designated by the reference numeral 1. This watch case includes a middle part 2 which comes in one piece with the box. The wall of the middle part 2 is provided with a hole 3 opening into the interior of the case. This hole 3 comprises a first portion 4 having a first diameter D1 which opens directly inside the box, and a second portion 5 having a second diameter D2 greater than the first and opening out of the box.

Par ailleurs, la carrure 2 est munie d'un bouton poussoir 6 permettant la transmission d'un effort mécanique de l'extérieur de la boîte vers l'intérieur, par exemple pour actionner un contact C de commande de l'affichage d'une information telle que la date ou analogue.Furthermore, the middle part 2 is provided with a push button 6 allowing the transmission of a mechanical force from the outside of the box to the inside, for example for actuating a contact C for controlling the display of a information such as date or the like.

Ce bouton poussoir comprend essentiellement une tige 7, une couronne 8, un ressort de rappel 9 pour ramener le bouton poussoir dans une position de repos (représentée à la figure) et une garniture d'étanchéité 10.This push button essentially comprises a rod 7, a crown 8, a return spring 9 for bringing back the push button in a rest position (shown in the figure) and a seal 10.

Selon l'invention, la carrure est réalisée en matière synthétique, et de préférence, la matière utilisée a une structure présentant une large zone de déformation élastique. On citera avantageusement parmi les matières possédant ces caractéristiques, les matières synthétiques de type amorphe et plus particulièrement la famille des acryl butadiène styrène désignée couramment par ABS.According to the invention, the middle part is made of synthetic material, and preferably the material used has a structure having a wide area of elastic deformation. Advantageously, among the materials having these characteristics, mention will be made of amorphous type synthetic materials and more particularly the family of acryl butadiene styrene commonly referred to as ABS.

En outre, la première portion 4 du trou 3 s'étend sur une longueur limitée L et définit un col 11. Selon l'invention, La tige 7 comprend une partie intermédiaire 12 pleine et indéformable se terminant par un bourrelet 13 ayant un diamètre supérieur au diamètre D1 de la première portion 4 du trou 3 et inférieur au diamètre D2 de la seconde portion 5. La partie intermédiaire 12 a un diamètre D3 inférieur au diamètre D1 de la première portion 4.In addition, the first portion 4 of the hole 3 extends over a limited length L and defines a neck 11. According to the invention, the rod 7 comprises an intermediate portion 12 which is solid and non-deformable ending in a bead 13 having a larger diameter. to the diameter D1 of the first portion 4 of the hole 3 and less than the diameter D2 of the second portion 5. The intermediate portion 12 has a diameter D3 less than the diameter D1 of the first portion 4.

Ainsi, quand la tige 7 est introduite dans le trou 3 de la carrure 2, le bourrelet 13 exerce une pression sur le col 11 si bien qu'il le déforme élastiquement et permet son passage, après quoi, le col reprend sa forme initiale tout en assurant un positionnement axial de la tige.Thus, when the rod 7 is introduced into the hole 3 of the middle part 2, the bead 13 exerts pressure on the neck 11 so that it deforms it elastically and allows it to pass, after which the neck returns to its original shape while ensuring axial positioning of the rod.

On notera que la longueur limitée de la première portion 4 définissant le col est choisie en fonction du diamètre de celui-ci et de préférence le rapport L/D1 sera compris entre 0,3 et 0,4.It will be noted that the limited length of the first portion 4 defining the neck is chosen as a function of the diameter of the latter and preferably the ratio L / D1 will be between 0.3 and 0.4.

Selon une caractéristique avantageuse de l'invention, la partie intermédiaire 12 de la tige 7 est raccordée à une partie de tige 14 ajustée à glissement sur la seconde portion 5 du trou 3 pour assurer un guidage correct de la tige 7 et par conséquent du bouton poussoir dans la carrure.According to an advantageous characteristic of the invention, the intermediate part 12 of the rod 7 is connected to a part of the rod 14 slidingly adjusted on the second portion 5 of the hole 3 to ensure correct guidance of the rod 7 and therefore of the button push in the middle.

Cette partie de tige 14 comprend un logement annulaire 15 qui reçoit la garniture d'étanchéité 10 de type "O ring" dans l'exemple représenté. Il est à noter que dans ce mode de réalisation, et de manière avantageuse la garniture d'étanchéité n'est pas soumise à des contraintes de compression comme cela est le cas dans l'art antérieur précité où elle est intercalée entre deux éléments mobiles et où elle participe à la transmission de l'effort sur le bouton. Il en résulte donc que sa durée de vie est sensiblement augmentée.This rod portion 14 comprises an annular housing 15 which receives the seal 10 of the "O ring" type in the example shown. It should be noted that in this embodiment, and advantageously the seal is not subjected to compression stresses as is the case in the aforementioned prior art where it is interposed between two movable elements and where it participates in the transmission of the force on the button. It therefore follows that its life is significantly increased.

On notera également dans ce cas qu'afin de faciliter la fabrication de la tige ainsi que sa mise en place dans la carrure on réalisera le bourrelet 13 d'un diamètre identique à celui de la partie de tige 14 servant au guidage.It will also be noted in this case that in order to facilitate the manufacture of the rod as well as its positioning in the middle part, the bead 13 will be produced with a diameter identical to that of the part of the rod 14 serving for guiding.

Dans le mode de réalisation représenté, la carrure 2 comprend en outre une gorge annulaire 16 centrée sur le trou 3. Cette gorge 16 reçoit partiellement la couronne 8 à l'état de repos, afin d'éviter que la couronne ne soit extraite de son logement et par conséquent que le poussoir 6 soit désolidarisé de la carrure 2 dans le cas de l'application intempestive d'une force appliquée à la base de la couronne 8.In the embodiment shown, the middle part 2 further comprises an annular groove 16 centered on the hole 3. This groove 16 partially receives the crown 8 in the rest state, in order to prevent the crown from being extracted from its housing and consequently that the pusher 6 is detached from the middle part 2 in the case of untimely application of a force applied to the base of the crown 8.

De plus, le fond 17 de la gorge 16 définit une surface d'appui pour une extrémité 18 du ressort de rappel 9. L'extrémité opposée 19 de ce dernier s'appuie contre le fond 20 d'une gorge annulaire 21 ménagée dans la couronne 8 définissant une jupe annulaire et formant ainsi un logement de réception du ressort de rappel.In addition, the bottom 17 of the groove 16 defines a bearing surface for one end 18 of the return spring 9. The opposite end 19 of the latter bears against the bottom 20 of an annular groove 21 formed in the crown 8 defining an annular skirt and thus forming a housing for receiving the return spring.

Enfin, dans l'exemple représenté à la figure, la couronne 8 est chassée sur un embout 22 de la tige 7 et elle s'appuie sur une collerette 23 définissant un épaulement 24. Bien entendu, la couronne et la tige peuvent être réalisées en une seule pièce afin de diminuer le nombre de pièces de l'ensemble.Finally, in the example shown in the figure, the crown 8 is driven out on an end piece 22 of the rod 7 and it is supported on a flange 23 defining a shoulder 24. Of course, the crown and the rod can be produced in one piece to reduce the number of pieces in the set.

Bien entendu, l'invention n'est pas limitée à l'application du bouton poussoir à une boîte de montre. Elle peut, en effet, avantageusement trouver une application dans tous les cas où un effort mécanique doit être transmis à travers une paroi en matière synthétique par un bouton poussoir.Of course, the invention is not limited to the application of the push button to a watch case. It can, in fact, advantageously find application in all cases where a mechanical force must be transmitted through a wall of synthetic material by a push button.

Claims (10)

1. Push-button mounted in a wall to set off an action taking place from a first side of the wall (2) originating from a second side of the latter, the wall (2) adapted to be in particular that of a watch case (1), said wall exhibiting a hole (3) having at least a first portion (4) of a first diameter opening from said first side and extending over a limited length in order to define a neck (11) and a second portion (5) of a second diameter greater than said first diameter and opening from said second side, said push-button comprising a stem (7) ending with a bulge (13) at the first side of the wall (2) and means (9) for returning the stem to a rest position, characterized in that said wall is formed from synthetic material, in that the neck (11) is elastically deformable, and in that the bulge (13) on the stem (7) is non-deformable and exhibits an intermediate diameter in between that of the first and second diameters of the hole (3) so that, when the stem (7) is introduced into the hole (3) in the wall (2), the bulge (13) elastically deforms the neck (11) which, following passage of the bulge (13), reassumes its initial form thus assuring an axial positioning of the stem in the wall.
2. Push-button according to claim 1, characterized in that the bulge (13) on the stem (7) is connected through a portion of the stem (12) of small diameter to another portion of the stem (14) which is adjusted to sliding fit in the second portion (5) of the hole so as to assure guiding of the stem (7) in the wall (2).
3. Push-button according to claim 1 or 2, characterized in that the stem is capped with a crown (8) and in that the wall (2) further comprises an annular groove (16) centered on the hole (3) defining, together with an annular groove (21) formed in the crown (8) facing the wall (2), a housing for receiving the returning means (9).
4. Push-button according to claim 3, characterized in that the annular groove (21) formed in the crown (8) at its base defines a skirt penetrating partially into the annular groove (16) in the wall (2) in the rest state of the push-button.
5. Push-button according to one of claims 2 or 3, characterized in that the bottom (17, 20) of each annular groove (16, 21) respectively forms a support surface for the ends (18, 19) of the returning means (9).
6. Push-button according to any one of claims 3 to 5, characterized in that the crown (8) is driven onto a shank (22) on the stem (7) and supported on a flange (23) defining a supporting surface (24).
7. Push-button according to any one of claims 3 to 6, characterized in that it further comprises a moisture seal arranged in an annular housing (15) provided in the portion (14) of the stem serving for guiding.
8. Push-button according to any one of the preceding claims, characterized in that the wall (2) is formed from a synthetic material forming part of the acrylic butadiene styrene family.
9. Push-button according to any one of the preceding claims, characterized in that the returning means comprises a helical spring.
10. Push-button according to any one of the preceding claims, characterized in that the wall (2) forms part of the caseband of a watch case (1).
EP90106258A 1989-04-12 1990-04-02 Push-button, in particular for watch-case Expired - Lifetime EP0392307B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90106258T ATE78111T1 (en) 1989-04-12 1990-04-02 PUSH BUTTON, ESPECIALLY FOR WATCH CASE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1377/89 1989-04-12
CH1377/89A CH675811B5 (en) 1989-04-12 1989-04-12

Publications (2)

Publication Number Publication Date
EP0392307A1 EP0392307A1 (en) 1990-10-17
EP0392307B1 true EP0392307B1 (en) 1992-07-08

Family

ID=4209002

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90106258A Expired - Lifetime EP0392307B1 (en) 1989-04-12 1990-04-02 Push-button, in particular for watch-case

Country Status (11)

Country Link
US (1) US5043958A (en)
EP (1) EP0392307B1 (en)
JP (1) JP3167704B2 (en)
KR (1) KR0163046B1 (en)
CN (1) CN1020244C (en)
AT (1) ATE78111T1 (en)
AU (1) AU629772B2 (en)
CA (1) CA2014371C (en)
CH (1) CH675811B5 (en)
DE (1) DE69000180T2 (en)
HK (1) HK208496A (en)

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DE69226682T2 (en) * 1991-06-28 1999-02-04 Canon K.K., Tokio/Tokyo Imaging device with charging element
CH688495B5 (en) * 1995-09-04 1998-04-30 Smh Management Services Ag Timepiece including a pull rod and drive mechanism.
KR19990088020A (en) * 1998-05-13 1999-12-27 에따 쏘시에떼 아노님 파브리끄 데보슈 Push button device for a timepiece in particular a chronograph
EP0957415A1 (en) * 1998-05-14 1999-11-17 Eta SA Fabriques d'Ebauches Push-button device for timepiece,especially chronograph
EP1345095B1 (en) * 2002-03-14 2008-05-07 Seiko Epson Corporation Push button structure
JP4506218B2 (en) * 2003-03-31 2010-07-21 セイコーエプソン株式会社 Button structure and portable device equipped with the same
DE60306524T2 (en) * 2003-09-23 2007-02-08 Asulab S.A. Portable electronic device having at least one matched input / output connector for communicating with an electronic device in the device
USD614338S1 (en) 2009-07-14 2010-04-20 Abl Ip Holding Llc Light fixture
USD611642S1 (en) 2009-07-14 2010-03-09 Abl Ip Holding Llc Light fixture
FR2949265B1 (en) * 2009-08-19 2011-08-19 G Et F Chatelain S A MANUAL DEVICE FOR ADJUSTING AND / OR CONTROLLING A FUNCTION OF A WATCHPIECE
US8439559B2 (en) * 2010-03-23 2013-05-14 Bright Aggregation Technology Limited Timepiece with multi-functional actuator
WO2012011282A1 (en) * 2010-07-23 2012-01-26 信越ポリマー株式会社 Push-button switch manufacturing method
KR101045612B1 (en) 2010-12-13 2011-07-01 주식회사 대산엔지니어링 A push button switch mounted in pressure chamber
JP6048176B2 (en) * 2013-02-01 2016-12-21 カシオ計算機株式会社 Pushbutton device and clock
JP6057771B2 (en) * 2013-02-20 2017-01-11 セイコーインスツル株式会社 Portable devices and portable watches
EP3185079B1 (en) 2015-12-21 2019-08-21 ETA SA Manufacture Horlogère Suisse Push-button arrangement for an electronic or electromechanical wristwatch
JP7211061B2 (en) * 2018-12-19 2023-01-24 カシオ計算機株式会社 Push button device and clock
EP3742235B1 (en) * 2019-05-23 2022-01-26 Meco S.A. Push button system, and timepiece comprising same
EP3805873B1 (en) * 2019-10-09 2023-12-06 Meco S.A. Adjustable threaded crown
EP3805869A1 (en) * 2019-10-09 2021-04-14 Meco S.A. Threaded crown
CN112716119B (en) * 2020-12-29 2022-08-26 维沃移动通信有限公司 Watch (watch)

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Also Published As

Publication number Publication date
CN1020244C (en) 1993-04-07
CN1046396A (en) 1990-10-24
CA2014371A1 (en) 1990-10-13
CH675811B5 (en) 1991-05-15
HK208496A (en) 1996-11-29
AU629772B2 (en) 1992-10-08
CA2014371C (en) 1999-07-20
KR900016830A (en) 1990-11-14
ATE78111T1 (en) 1992-07-15
DE69000180T2 (en) 1993-02-11
US5043958A (en) 1991-08-27
JP3167704B2 (en) 2001-05-21
AU5310790A (en) 1990-10-18
JPH02287280A (en) 1990-11-27
CH675811GA3 (en) 1990-11-15
EP0392307A1 (en) 1990-10-17
DE69000180D1 (en) 1992-08-13
KR0163046B1 (en) 1999-05-01

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