EP2107432B1 - Pushbutton control device for a watch - Google Patents

Pushbutton control device for a watch Download PDF

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Publication number
EP2107432B1
EP2107432B1 EP08153922A EP08153922A EP2107432B1 EP 2107432 B1 EP2107432 B1 EP 2107432B1 EP 08153922 A EP08153922 A EP 08153922A EP 08153922 A EP08153922 A EP 08153922A EP 2107432 B1 EP2107432 B1 EP 2107432B1
Authority
EP
European Patent Office
Prior art keywords
stem
button
push
control device
watch
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.)
Active
Application number
EP08153922A
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German (de)
French (fr)
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EP2107432A1 (en
Inventor
Philipp Tschumi
Sébastien Briswalter
Vincent Brunner
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.)
Rado Uhren AG
Original Assignee
Rado Uhren AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rado Uhren AG filed Critical Rado Uhren AG
Priority to AT08153922T priority Critical patent/ATE514978T1/en
Priority to EP08153922A priority patent/EP2107432B1/en
Priority to KR1020090027219A priority patent/KR101254373B1/en
Priority to SG200902223-7A priority patent/SG155875A1/en
Priority to JP2009088848A priority patent/JP5346655B2/en
Priority to US12/416,653 priority patent/US7967504B2/en
Priority to CN2009101387449A priority patent/CN101576755B/en
Publication of EP2107432A1 publication Critical patent/EP2107432A1/en
Priority to HK10104350.4A priority patent/HK1138387A1/en
Application granted granted Critical
Publication of EP2107432B1 publication Critical patent/EP2107432B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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

Definitions

  • the present invention relates to a push-button control device for a watch, and in particular a push-button control device, the button of which is designed to be seated, at least in part, in the middle part of the watch when the control device is actuated. .
  • the figure 1 illustrates such a device of the prior art.
  • the middle part 1 of a watch has a recess 2 whose bottom has a bore 3 in which is engaged the pusher tube 4 which is fixed in the middle part.
  • a push rod 8 associated with a push button 9 is disposed inside the tube so as to slide axially in the latter between a rest position and an active position.
  • the button 9 comprises a cap 5 which protrudes out of the recess 2. It can be seen that the cap 5 has an annular recess 11 formed around a central cylindrical portion into which the threaded end of the rod 8 is screwed.
  • the rod and the button 9 are returned to the rest position by a helical spring 13 surrounding the central cylindrical portion of the cap 5.
  • the spring 13 is supported by one of its ends against the bottom of the annular recess 11, while its other end is engaged in the tube 4.
  • the sealing of the tube 4 is provided by an O-ring 6 disposed in the annular recess 11.
  • the seal 6 is dimensioned so as to be compressed between the outer edge of the recess and the pusher tube 4.
  • the button 9 further comprises a ring 7 which closes the periphery of the recess 11 and which is provided to maintain the position of the seal 6.
  • a problem with the devices of the type just described is that it is in principle not possible to exactly adjust the dimension of the recess 2 to that of the push button 9. In fact, with customary manufacturing tolerances, we can not guarantee a perfect centering of the axis of the push rod 8 relative to the recess 2. In these conditions, it is necessary to provide a gap serving as a clearance space between the button 9 and the wall of the recess 2. A disadvantage of the presence of this gap is to allow the accumulation of dirt between the push button 9 and the middle 1. On the other hand, a defect of centering even light button 9 relative to the recess 2 can affect the aesthetics of the watch.
  • the middle part of the watch for which the push-button control device is intended comprises a cap serving as a covering for an underlying structure made in one material easier to machine or cheaper.
  • Such watch cases formed of a center of a first material covered with a protective or decorative cap of a second material are well known to those skilled in the art.
  • the patent document EP 1'102'136 describes a watch case comprising a center made of steel dressed with a cap made of a very hard and scratch-resistant material such as ceramic.
  • the figure 2 illustrates by way of example a chronograph watch equipped with pusher control devices 29 and whose box is dressed with a cap made of ceramic for example.
  • the push rod must naturally cross both the cap and the center of the watch case.
  • the cap and the center of the box must both be provided with an opening, and the opening of the cap must be superimposed as accurately as possible to the opening of the center once the two components of the box assembled .
  • the manufacturing tolerances of a machined part are normally all the more important, as the material in which this last is performed is difficult to work. But the accuracy of the adjustment of the cap on the center depends largely on the accuracy with which the cap was made.
  • the figure 3 illustrates by way of example a misalignment between the opening in the steel center and the opening of the cap 22. It is easy to understand that the insertion of a pusher control device into openings also misaligned can cause problems.
  • the push button may even be so off-center that it simply does not pass through the opening in the ceramic cap.
  • the misalignment is not sufficient to prevent the passage of the push button, it can compromise the aesthetic qualities of the watch.
  • the Swiss patent document CH 220'261 discloses a timepiece pusher, comprising a barrel whose inner end has an overhanging insert that prevents the pusher out of its housing when pulled outward.
  • An object of the present invention is to provide a solution to the alignment problems that have just been described.
  • the present invention accomplishes this goal by providing a push-button controller according to the appended claim 1.
  • the figure 4 provides a partial sectional view of the middle part 21a, 21b of a watch with a push-button control device corresponding to a particular embodiment of the present invention.
  • This watch could be for example the chronograph watch illustrated by the figure 2 .
  • the middle part of the watch shown is double and comprises a steel inner case (referenced 21a) and an outer caseband 21b forming part of a ceramic cap covering the steel watch case.
  • the middle part has a recess 22 which, in the present example, is circular and which is intended to receive a push button 29.
  • the bottom of the recess 22 has a bore 23 in which is engaged a push tube 24 which is fixed in the middle part 21 a.
  • the tube 24 is formed of two coaxial cylindrical portions 24a, 24b of different diameters and joined to each other at a circular shoulder 24c.
  • a push rod 28 is disposed inside the tube 24 so as to slide axially between an upper rest position (shown in FIG. figure 4 ) and a lower active position (in the following pages, the terms upper, lower, upper, lower, are used with reference to a pusher represented with its button pointing towards the top of the page as in the figure 4 ).
  • the push rod 28 is capped with an upper portion or cylindrical head 28a of larger diameter.
  • the head 28a comprises, on its lower face, an annular hollow 31 defining a skirt around the rod.
  • the diameter of the head 28a is provided to allow it to slide inside the portion 24a of larger diameter of the pusher tube 24, until abut in the active position against the shoulder 24c.
  • the stroke of the push rod 28 is limited in the other direction by a key 33 or circlip secured to the rod and which abuts in the rest position against the lower end of the push tube 24.
  • Two O-ring seals Sealing 36 ensuring a tight closure of the tube 24 are arranged in the tube portion 24b between the rod 28 and the tube. The two seals are held axially by a ring 42 which surrounds the rod 28 and closes the tube portion 24b at the shoulder 24c.
  • the push rod 28 is returned to the rest position by a helical spring 35 surrounding a portion of the rod 28.
  • the spring 35 is supported by one of its ends against the bottom of the annular recess 31, while its other end is supported by the pusher tube 24 through the ring 42.
  • the push button 29 can shift laterally with respect to the axis of the rod 28. It can be seen on the figure 4 that the pusher button 29 has a hollow cap 25 which protrudes out of the recess 22 and which covers the upper end of the cylindrical head 28a.
  • the cap 25 may advantageously be made from the same ceramic material as the outer middle part 21b.
  • the cap 25 is rigidly attached to an annular base member, or ring, 27. As will now be explained, the annular base member 27 is mounted on the cylindrical head 28a with play.
  • the top of the head cylindrical 28a is pierced by a tapped axial hole 39.
  • a screw 40 whose threaded axis 38 is capped with a disc-shaped head 40, is screwed into the hole 39.
  • the screw 40 passes through a central circular opening of the base member 27, so that this element is sandwiched between the top of the push rod and the head of the screw 40.
  • the diameter of the central opening of the base member 27 is smaller than both at the diameter of the cylindrical head 28a and the head of the screw 40, the push button 29 can not be detached from the rod 28 without unscrewing the screw 40.
  • the diameter of the opening the center of the base member 27 is substantially larger than the diameter of the threaded shaft 38, so that the base member may, to a certain extent, shift laterally with respect to the axis of the screw 40 .
  • the upper edge of the head 28a of the push rod 28 and the lower edge of the head of the screw 40 form two parallel shoulders which define an annular groove in which the base element 27 is engaged.
  • the presence of the threaded spindle 38 makes it possible to adjust the width of the annular groove by more or less screwing or unscrewing the screw 40.
  • the width of the annular groove is determined so that the base element 27 is held without play in the axial direction.
  • the pressure exerted by the parallel shoulders 44, 46 on either side of the base member 27 also has the effect of maintaining the latter frictionally in the radial direction.
  • the materials used for the head 28a and the screw 40 and the base member 27, so as to promote a low-intensity fat friction can be chosen.
  • the head 28a and the screw 40 made of metal, for example stainless steel can be made and the base element made of a suitable plastic material such as a polyamide for example.
  • the pusher control device of the present example it is possible to operate as follows: first assemble the pusher without the button; then the annular base member 27 is placed on the head 28a of the push rod and these two elements are joined together by screwing the threaded pin 38 of the screw 40 into the threaded hole 39, after having introduced a drop of stick in it. We adjust the tightening of the screw 40 so as to obtain between the head 28a, the screw 40 and the base element 27 a fat friction of desired intensity. Finally, the ceramic cap 25 is fixed by screwing or gluing on the base element 27.
  • the fastening means of these two rod portions do not necessarily include a threaded shaft and a tapped hole.
  • a threaded shaft and a tapped hole it is possible to use, for example, a smooth shaft and a cylindrical hole; a drop of glue then preferably serving to hold the two parts in place.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Selective Calling Equipment (AREA)
  • Switches With Compound Operations (AREA)
  • Push-Button Switches (AREA)

Abstract

The device has a push-button stem (28) inserted into an orifice in a watchcase through a bottom end, and a button (29) mounted on a top part of the stem outside the watchcase. The top part of the stem includes an annular groove delimited by two parallel shoulders (44, 46) perpendicular to an axis of the stem. The button includes an annular base element (27) engaged in the groove so as to be held between the shoulders along axial direction and centered in bottom of the groove such that the button is free to move off-centre relative to the axis of the stem while remaining secured to the stem. The groove is formed by assembling two stem portions that are made of metal.

Description

La présente invention concerne un dispositif de commande à poussoir pour montre, et notamment un dispositif de commande à poussoir, dont le bouton est prévu pour s'enfoncer, au moins en partie, dans la carrure de la montre lorsque le dispositif de commande est actionné.The present invention relates to a push-button control device for a watch, and in particular a push-button control device, the button of which is designed to be seated, at least in part, in the middle part of the watch when the control device is actuated. .

On connaît de nombreux dispositifs de commande à poussoir qui correspondent à la définition ci-dessus. A titre d'exemple, la figure 1 illustre un tel dispositif de l'art antérieur. En se référant à la figure, la carrure 1 d'une montre présente un évidement 2 dont le fond présente un perçage 3 dans lequel est engagé le tube de poussoir 4 qui est fixé dans la carrure. Une tige de poussoir 8 associée à un bouton de poussoir 9 est disposée à l'intérieur du tube de manière à pouvoir coulisser axialement dans ce dernier entre une position de repos et une position active. Le bouton 9 comporte un capuchon 5 qui fait saillie hors de l'évidement 2. On peut voir que le capuchon 5 présente une creusure annulaire 11 formée autour d'une portion cylindrique centrale dans laquelle vient se visser l'extrémité filetée de la tige 8. La tige et le bouton 9 sont rappelés dans la position de repos par un ressort hélicoïdal 13 entourant la portion cylindrique centrale du capuchon 5. Le ressort 13 prend appui par l'une de ses extrémités contre le fond de la creusure annulaire 11, alors que son autre extrémité est engagée dans le tube 4. Dans l'exemple illustré, la fermeture étanche du tube 4 est assurée par un joint O-ring 6 disposé dans la creusure annulaire 11. Le joint 6 est dimensionné de manière à être comprimé entre le bord extérieur de la creusure et le tube de poussoir 4. Le bouton 9 comporte encore une bague 7 qui ferme la périphérie de la creusure 11 et qui est prévue pour assurer le maintient en position du joint d'étanchéité 6.Many push-button controllers are known which correspond to the above definition. For example, the figure 1 illustrates such a device of the prior art. Referring to the figure, the middle part 1 of a watch has a recess 2 whose bottom has a bore 3 in which is engaged the pusher tube 4 which is fixed in the middle part. A push rod 8 associated with a push button 9 is disposed inside the tube so as to slide axially in the latter between a rest position and an active position. The button 9 comprises a cap 5 which protrudes out of the recess 2. It can be seen that the cap 5 has an annular recess 11 formed around a central cylindrical portion into which the threaded end of the rod 8 is screwed. The rod and the button 9 are returned to the rest position by a helical spring 13 surrounding the central cylindrical portion of the cap 5. The spring 13 is supported by one of its ends against the bottom of the annular recess 11, while its other end is engaged in the tube 4. In the example shown, the sealing of the tube 4 is provided by an O-ring 6 disposed in the annular recess 11. The seal 6 is dimensioned so as to be compressed between the outer edge of the recess and the pusher tube 4. The button 9 further comprises a ring 7 which closes the periphery of the recess 11 and which is provided to maintain the position of the seal 6.

Un problème avec les dispositifs du type de celui qui vient d'être décrit est qu'il n'est en principe pas possible d'ajuster exactement la dimension de l'évidement 2 à celle du bouton de poussoir 9. En effet, avec des tolérances de fabrication usuelles, on ne peut garantir un centrage parfait de l'axe de la tige de poussoir 8 par rapport à l'évidement 2. Dans ces conditions, il est nécessaire de prévoir un interstice servant d'espace de débattement entre le bouton 9 et la paroi de l'évidement 2. Un inconvénient de la présence de cet interstice est de permettre l'accumulation de crasse entre le bouton de poussoir 9 et la carrure 1. D'autre part, un défaut de centrage même léger du bouton 9 par rapport à l'évidement 2 peut nuire à l'esthétique de la montre.A problem with the devices of the type just described is that it is in principle not possible to exactly adjust the dimension of the recess 2 to that of the push button 9. In fact, with customary manufacturing tolerances, we can not guarantee a perfect centering of the axis of the push rod 8 relative to the recess 2. In these conditions, it is necessary to provide a gap serving as a clearance space between the button 9 and the wall of the recess 2. A disadvantage of the presence of this gap is to allow the accumulation of dirt between the push button 9 and the middle 1. On the other hand, a defect of centering even light button 9 relative to the recess 2 can affect the aesthetics of the watch.

Le problème ci-dessus se pose avec encore plus d'acuité dans le cas fréquent où la carrure de la montre à laquelle est destiné le dispositif de commande à poussoir, comporte une coiffe servant d'habillage à une structure sous-jacente réalisée en un matériau plus facile à usiner ou meilleur marché. De telles boîtes de montre formées d'un centre en un premier matériau recouvert d'une coiffe protectrice ou décorative en un second matériau sont bien connues de l'homme du métier. A titre d'exemple, le document de brevet EP 1'102'136 décrit une boite de montre comprenant un centre réalisé en acier habillé d'une coiffe en un matériau très dur et inrayable comme de la céramique.The above problem arises with even greater acuteness in the frequent case where the middle part of the watch for which the push-button control device is intended comprises a cap serving as a covering for an underlying structure made in one material easier to machine or cheaper. Such watch cases formed of a center of a first material covered with a protective or decorative cap of a second material are well known to those skilled in the art. For example, the patent document EP 1'102'136 describes a watch case comprising a center made of steel dressed with a cap made of a very hard and scratch-resistant material such as ceramic.

La figure 2 illustre à titre d'exemple une montre-chronographe équipée de dispositifs de commande à poussoir 29 et dont la boîte est habillée d'une coiffe réalisée en céramique par exemple. Dans le cas d'une telle montre, la tige du poussoir doit naturellement traverser tout à la fois la coiffe et le centre de la boite de montre. La coiffe et le centre de la boîte doivent donc tous les deux être munis d'une ouverture, et l'ouverture de la coiffe doit venir se superposer aussi précisément que possible à l'ouverture du centre une fois les deux constituants de la boîte assemblés. On sait toutefois que les tolérances de fabrication d'une pièce usinée sont normalement d'autant plus importantes, que le matériau dans lequel cette dernière est réalisée est difficile à travailler. Or la précision de l'ajustement de la coiffe sur le centre dépend en grande partie de la précision avec laquelle la coiffe a été réalisée.The figure 2 illustrates by way of example a chronograph watch equipped with pusher control devices 29 and whose box is dressed with a cap made of ceramic for example. In the case of such a watch, the push rod must naturally cross both the cap and the center of the watch case. The cap and the center of the box must both be provided with an opening, and the opening of the cap must be superimposed as accurately as possible to the opening of the center once the two components of the box assembled . However, it is known that the manufacturing tolerances of a machined part are normally all the more important, as the material in which this last is performed is difficult to work. But the accuracy of the adjustment of the cap on the center depends largely on the accuracy with which the cap was made.

La figure 3 illustre à titre d'exemple un défaut d'alignement entre l'ouverture aménagée dans le centre en acier et l'ouverture de la coiffe 22. On comprend sans peine que l'insertion d'un dispositif de commande à poussoir dans des ouvertures aussi mal alignées puisse poser des problèmes. Le bouton de poussoir risque même de se trouver à tel point décentré qu'il ne passe tout simplement pas à travers l'ouverture pratiquée dans la coiffe en céramique. De plus, même si le défaut d'alignement n'est pas suffisant pour empêcher le passage du bouton de poussoir, il peut compromettre les qualités esthétiques de la montre.The figure 3 illustrates by way of example a misalignment between the opening in the steel center and the opening of the cap 22. It is easy to understand that the insertion of a pusher control device into openings also misaligned can cause problems. The push button may even be so off-center that it simply does not pass through the opening in the ceramic cap. In addition, even if the misalignment is not sufficient to prevent the passage of the push button, it can compromise the aesthetic qualities of the watch.

Le document de brevet suisse CH 220'261 décrit un poussoir de pièce d'horlogerie, comprenant un canon dont l'extrémité intérieure comporte une partie rapportée débordante qui empêche le poussoir de sortir de son logement lorsqu'on le tire vers l'extérieur.The Swiss patent document CH 220'261 discloses a timepiece pusher, comprising a barrel whose inner end has an overhanging insert that prevents the pusher out of its housing when pulled outward.

Un but de la présente invention est d'apporter une solution aux problèmes d'alignement qui viennent d'être décrits. La présente invention atteint ce but en fournissant un dispositif de commande à poussoir conforme à la revendication 1 annexée.An object of the present invention is to provide a solution to the alignment problems that have just been described. The present invention accomplishes this goal by providing a push-button controller according to the appended claim 1.

On comprendra que l'existence selon l'invention d'un jeu entre la base annulaire entourant la tige et le fond de la gorge permet au bouton de poussoir de se déplacer latéralement par rapport à la tige de poussoir, rendant ainsi possible la compensation d'un éventuel mauvais alignement.It will be understood that the existence according to the invention of a clearance between the annular base surrounding the rod and the bottom of the groove allows the push button to move laterally with respect to the push rod, thus making possible the compensation of 'a possible misalignment.

D'autres caractéristiques et avantages de la présente invention apparaîtront à la lecture de la description détaillée qui va suivre, donnée uniquement à titre d'exemple non limitatif, et faite en référence aux dessins annexés dans lesquels :

  • la figure 1 est une vue en coupe d'un dispositif de commande à poussoir de l'art antérieur ;
  • la figure 2 est une vue de dessus d'une montre-chronographe dont la boîte est formée par un centre en acier habillé d'une coiffe en céramique, cette montre-chronographe comportant deux dispositifs de commande à poussoir conformes à la présente invention ;
  • la figure 3 est une vue partielle agrandie de la carrure de la montre-chronographe de la figure 2 dans laquelle un des dispositifs de commande à poussoir a été omis pour montrer, à titre d'exemple, un possible mauvais alignement de l'ouverture aménagée dans la coiffe par rapport à l'ouverture pratiquée dans le centre en acier ;
  • la figure 4 est une vue mixte en élévation d'un mode de réalisation particulier du dispositif de commande à poussoir selon la présente invention, dans laquelle on a également représenté partiellement en coupe la carrure d'une montre dans laquelle le dispositif est monté, le dispositif lui-même étant représenté pour moitié en coupe.
Other features and advantages of the present invention will appear on reading the following detailed description, given solely by way of non-limiting example, and with reference to the appended drawings in which:
  • the figure 1 is a sectional view of a pusher control device of the prior art;
  • the figure 2 is a top view of a chronograph watch whose box is formed by a steel center dressed with a ceramic cap, this chronograph watch comprising two push-button control devices according to the present invention;
  • the figure 3 is an enlarged partial view of the middle part of the chronograph watch of the figure 2 wherein one of the push-button controllers has been omitted to show, by way of example, a possible misalignment of the aperture arranged in the cap with respect to the opening in the steel center;
  • the figure 4 is a mixed view in elevation of a particular embodiment of the push-button control device according to the present invention, in which the middle part of a watch in which the device is mounted is partially partially sectioned, the device itself is even being half represented in section.

La figure 4 offre une vue partielle en coupe de la carrure 21 a, 21 b d'une montre avec un dispositif de commande à poussoir correspondant à un mode de réalisation particulier de la présente invention. Cette montre pourrait être par exemple la montre-chronographe illustrée par la figure 2. La carrure de la montre représentée est double est comprend une carrure intérieure en acier (référencée 21 a) et une carrure extérieure 21 b faisant partie d'une coiffe en céramique recouvrant la boîte de montre en acier. La carrure présente un évidement 22 qui, dans le présent exemple, est circulaire et qui est prévu pour recevoir un bouton de poussoir 29. Le fond de l'évidement 22 présente un perçage 23 dans lequel est engagé un tube de poussoir 24 qui est fixé dans la carrure intérieure 21 a. On voit que dans le présent exemple, le tube 24 est formé de deux portions cylindriques coaxiales 24a, 24b de diamètres différents et jointes l'une à l'autre au niveau d'un épaulement circulaire 24c. Une tige de poussoir 28 est disposée à l'intérieur du tube 24 de manière à pouvoir coulisser axialement entre une position supérieure de repos (représentée dans la figure 4) et une position inférieure active (dans les pages qui suivent, les termes supérieur, inférieur, haut, bas, sont utilisés en faisant référence à un poussoir représenté avec son bouton orienté vers le haut de la page comme dans la figure 4).The figure 4 provides a partial sectional view of the middle part 21a, 21b of a watch with a push-button control device corresponding to a particular embodiment of the present invention. This watch could be for example the chronograph watch illustrated by the figure 2 . The middle part of the watch shown is double and comprises a steel inner case (referenced 21a) and an outer caseband 21b forming part of a ceramic cap covering the steel watch case. The middle part has a recess 22 which, in the present example, is circular and which is intended to receive a push button 29. The bottom of the recess 22 has a bore 23 in which is engaged a push tube 24 which is fixed in the middle part 21 a. We see that in the present example, the tube 24 is formed of two coaxial cylindrical portions 24a, 24b of different diameters and joined to each other at a circular shoulder 24c. A push rod 28 is disposed inside the tube 24 so as to slide axially between an upper rest position (shown in FIG. figure 4 ) and a lower active position (in the following pages, the terms upper, lower, upper, lower, are used with reference to a pusher represented with its button pointing towards the top of the page as in the figure 4 ).

On voit que dans le présent mode de réalisation, la tige de poussoir 28 est coiffée d'une partie supérieure ou tête cylindrique 28a de plus grand diamètre. La tête 28a comprend, sur sa face inférieure, une creusure annulaire 31 définissant une jupe autour de la tige. Le diamètre de la tête 28a est prévu pour lui permettre de coulisser à l'intérieur de la portion 24a de plus grand diamètre du tube de poussoir 24, jusqu'à venir buter en position active contre l'épaulement 24c. La course de la tige de poussoir 28 est limitée dans l'autre sens par une clavette 33 ou circlip solidaire de la tige et qui vient buter en position de repos contre l'extrémité inférieure du tube de poussoir 24. Deux joints O-ring d'étanchéité 36 assurant une fermeture étanche du tube 24 sont disposés dans la portion de tube 24b entre la tige 28 et le tube. Les deux joints d'étanchéité sont maintenus axialement par une bague 42 qui entoure la tige 28 et ferme la portion de tube 24b au niveau de l'épaulement 24c.We see that in the present embodiment, the push rod 28 is capped with an upper portion or cylindrical head 28a of larger diameter. The head 28a comprises, on its lower face, an annular hollow 31 defining a skirt around the rod. The diameter of the head 28a is provided to allow it to slide inside the portion 24a of larger diameter of the pusher tube 24, until abut in the active position against the shoulder 24c. The stroke of the push rod 28 is limited in the other direction by a key 33 or circlip secured to the rod and which abuts in the rest position against the lower end of the push tube 24. Two O-ring seals Sealing 36 ensuring a tight closure of the tube 24 are arranged in the tube portion 24b between the rod 28 and the tube. The two seals are held axially by a ring 42 which surrounds the rod 28 and closes the tube portion 24b at the shoulder 24c.

La tige de poussoir 28 est rappelée dans la position de repos par un ressort hélicoïdal 35 entourant une portion de la tige 28. Le ressort 35 prendre appui par l'une de ses extrémités contre le fond de la creusure annulaire 31, alors que son autre extrémité est soutenue par le tube de poussoir 24 par l'intermédiaire de la bague 42.The push rod 28 is returned to the rest position by a helical spring 35 surrounding a portion of the rod 28. The spring 35 is supported by one of its ends against the bottom of the annular recess 31, while its other end is supported by the pusher tube 24 through the ring 42.

Conformément à la présente invention, le bouton de poussoir 29 peut se décaler latéralement par rapport à l'axe de la tige 28. On voit sur la figure 4 que le bouton de poussoir 29 comporte un capuchon 25 creux qui fait saillie hors de l'évidement 22 et qui recouvre l'extrémité supérieure de la tête cylindrique 28a. Le capuchon 25 peut avantageusement être réalisé à partir du même matériau céramique que la carrure extérieure 21b. Le capuchon 25 est fixé rigidement sur un élément de base annulaire, ou bague, 27. Conformément à ce qui va être expliqué maintenant, l'élément de base annulaire 27 est monté sur la tête cylindrique 28a avec du jeu. Le sommet de la tête cylindrique 28a est percé d'un trou axial taraudé 39. Une vis 40, dont l'axe fileté 38 est coiffé d'une tête 40 en forme de disque, est vissée dans le trou 39. La vis 40 traverse une ouverture circulaire centrale de l'élément de base 27, de sorte que cet élément est pris en sandwich entre le sommet de la tige de poussoir et la tête de la vis 40. Comme le diamètre de l'ouverture centrale de l'élément de base 27 est inférieur à la fois au diamètre de la tête cylindrique 28a et de la tête de la vis 40, le bouton de poussoir 29 ne peut pas être détaché de la tige 28 sans dévisser la vis 40. D'autre part, le diamètre de l'ouverture centrale de l'élément de base 27 est sensiblement plus grand que le diamètre de l'axe fileté 38, de sorte que l'élément de base peut, dans une certaine limite, se décaler latéralement par rapport à l'axe de la vis 40.According to the present invention, the push button 29 can shift laterally with respect to the axis of the rod 28. It can be seen on the figure 4 that the pusher button 29 has a hollow cap 25 which protrudes out of the recess 22 and which covers the upper end of the cylindrical head 28a. The cap 25 may advantageously be made from the same ceramic material as the outer middle part 21b. The cap 25 is rigidly attached to an annular base member, or ring, 27. As will now be explained, the annular base member 27 is mounted on the cylindrical head 28a with play. The top of the head cylindrical 28a is pierced by a tapped axial hole 39. A screw 40, whose threaded axis 38 is capped with a disc-shaped head 40, is screwed into the hole 39. The screw 40 passes through a central circular opening of the base member 27, so that this element is sandwiched between the top of the push rod and the head of the screw 40. As the diameter of the central opening of the base member 27 is smaller than both at the diameter of the cylindrical head 28a and the head of the screw 40, the push button 29 can not be detached from the rod 28 without unscrewing the screw 40. On the other hand, the diameter of the opening the center of the base member 27 is substantially larger than the diameter of the threaded shaft 38, so that the base member may, to a certain extent, shift laterally with respect to the axis of the screw 40 .

Le bord supérieur de la tête 28a de la tige de poussoir 28 et le bord inférieur de la tête de la vis 40 forment deux épaulements parallèles qui délimitent une gorge annulaire dans laquelle est engagé l'élément de base 27. De plus, dans le présent exemple, la présence de l'axe fileté 38 permet d'ajuster la largeur de la gorge annulaire en vissant ou en dévissant plus ou moins la vis 40. De manière avantageuse, on détermine la largeur de la gorge annulaire de manière à ce que l'élément de base 27 soit maintenu sans jeu dans le sens axial. Ainsi, la pression exercée par les épaulements parallèles 44, 46 de part est d'autre de l'élément de base 27 a également pour effet de maintenir ce dernier à frottement gras dans le sens radial. De manière avantageuse, on peut choisir les matériaux utilisés pour la tête 28a et la vis 40 et l'élément de base 27, de manière à favoriser un frottement gras de faible intensité. On peut par exemple réalisé la tête 28a et la vis 40 en métal, en acier inox par exemple, et réalisé l'élément de base dans une matière plastique adéquate comme un polyamide par exemple.The upper edge of the head 28a of the push rod 28 and the lower edge of the head of the screw 40 form two parallel shoulders which define an annular groove in which the base element 27 is engaged. Moreover, in the present For example, the presence of the threaded spindle 38 makes it possible to adjust the width of the annular groove by more or less screwing or unscrewing the screw 40. Advantageously, the width of the annular groove is determined so that the base element 27 is held without play in the axial direction. Thus, the pressure exerted by the parallel shoulders 44, 46 on either side of the base member 27 also has the effect of maintaining the latter frictionally in the radial direction. Advantageously, one can choose the materials used for the head 28a and the screw 40 and the base member 27, so as to promote a low-intensity fat friction. For example, the head 28a and the screw 40 made of metal, for example stainless steel, can be made and the base element made of a suitable plastic material such as a polyamide for example.

Pour assembler le dispositif de commande à poussoir du présent exemple, on peut opérer comme suit : on assemble d'abord le poussoir sans le bouton ; ensuite on place l'élément de base annulaire 27 sur la tête 28a de la tige de poussoir et on lie ces deux éléments ensemble en vissant la l'axe fileté 38 de la vis 40 dans le trou taraudé 39, après avoir introduit une goutte de colle dans ce dernier. On ajuste le serrage de la vis 40 de manière à obtenir entre la tête 28a, la vis 40 et l'élément de base 27 un frottement gras d'intensité désirée. Finalement on fixe par vissage ou collage le capuchon 25 en céramique sur l'élément de base 27.To assemble the pusher control device of the present example, it is possible to operate as follows: first assemble the pusher without the button; then the annular base member 27 is placed on the head 28a of the push rod and these two elements are joined together by screwing the threaded pin 38 of the screw 40 into the threaded hole 39, after having introduced a drop of stick in it. We adjust the tightening of the screw 40 so as to obtain between the head 28a, the screw 40 and the base element 27 a fat friction of desired intensity. Finally, the ceramic cap 25 is fixed by screwing or gluing on the base element 27.

On comprendra que diverses modifications et/ou améliorations évidentes pour un homme du métier peuvent être apportées au mode de réalisation qui fait l'objet de la présente description sans sortir du cadre de la présente invention définie par les revendications annexées. En particulier, ni le bouton de poussoir 29, ni l'évidement 22, n'ont besoin d'être circulaires. Le bouton de poussoir et l'évidement peuvent naturellement avoir des formes absolument quelconques. De plus, le dispositif de commande à poussoir peut également être utilisé avec une montre dont la carrure ne présente pas d'évidemment pour le bouton de poussoir, mais uniquement un perçage prévu pour recevoir le tube et la tige de poussoir.It will be understood that various modifications and / or improvements obvious to one skilled in the art can be made to the embodiment which is the subject of the present description without departing from the scope of the present invention defined by the appended claims. In particular, neither the push button 29 nor the recess 22 need be circular. The push button and the recess can naturally have absolutely any shape. In addition, the pusher control device can also be used with a watch whose case does not obviously have for the push button, but only a bore for receiving the tube and the push rod.

D'autre part, dans le cas de la variante où la gorge est formée par l'assemblage en position coaxiale de deux portions de tige 28a et 40, les moyens de fixation de ces deux portions de tige ne comprennent pas nécessairement un axe fileté et un trou taraudé. En effet de manière alternative, il est possible d'utiliser, par exemple, un axe lisse et un trou cylindrique ; un goutte de colle servant alors de préférence à maintenir les deux parties en place.On the other hand, in the case of the variant where the groove is formed by the assembly in the coaxial position of two rod portions 28a and 40, the fastening means of these two rod portions do not necessarily include a threaded shaft and a tapped hole. Indeed, alternatively, it is possible to use, for example, a smooth shaft and a cylindrical hole; a drop of glue then preferably serving to hold the two parts in place.

Claims (6)

  1. Push-button control device for a watch, inducing a push-button stem (28) arranged to be inserted by a bottom end into an orifice (22, 23) in a watchcase and a button (29) arranged to be mounted on a top part (28a) of the stem (28) outside the watchcase, said button (29) including a cap (25) that covers the top end of the stem (28), said stem being able to slide axially between at least a rest position and an active position against a return member (35) to control at least one function of said watch, said device being characterized in that said top part (28a) of the stem includes an annular groove delimited by two parallel shoulder (44, 46) perpendicular to the axis of the stem, and in that the button (29) includes an annular base (27) engaged in said groove so as to be held in the axial direction between the two shoulders (44, 46) and centred with some play by the bottom of the groove such that the button (29) is free to move off-centre relative to the axis of the stem (28), while remaining secured thereto.
  2. Push-button control device according to claim 1, characterized in that said groove is formed by assembling, in a coaxial position, two stem portions (28a, 40), respective opposite surfaces of said two stem portions (28a, 40) forming said two parallel shoulders (44, 46), and in that said two stem portions include complementary securing means (38, 39) that allow said assembly while maintaining some space between the two parallel shoulders (44, 46).
  3. Push-button control device according to claim 2, characterized in that said complementary securing mean (38, 39) include a threaded axial hole (39) formed in a first (28a) of said two stem portions and a threaded arbour (38) forming part of the second (40) of said two stem portions.
  4. Push-button control device according to claim 2, characterized in that said assembly of the two stem portions (28a, 40) is achieved by bonding.
  5. Push-button control device according to any of the preceding claims, characterized in that said two stem portions (28a, 40) are made of metal, and in that the annular base (27) is made of plastic maternal.
  6. Push-button control device according to claim 5, characterized in that said plastic material is polyamide.
EP08153922A 2008-04-01 2008-04-01 Pushbutton control device for a watch Active EP2107432B1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
AT08153922T ATE514978T1 (en) 2008-04-01 2008-04-01 CONTROL DEVICE WITH PUSH PUSHER FOR WATCH
EP08153922A EP2107432B1 (en) 2008-04-01 2008-04-01 Pushbutton control device for a watch
SG200902223-7A SG155875A1 (en) 2008-04-01 2009-03-31 Push-button control device for a watch
KR1020090027219A KR101254373B1 (en) 2008-04-01 2009-03-31 Push-button control device for a watch
JP2009088848A JP5346655B2 (en) 2008-04-01 2009-04-01 Push button control device for mobile watch
US12/416,653 US7967504B2 (en) 2008-04-01 2009-04-01 Push-button control device for a watch
CN2009101387449A CN101576755B (en) 2008-04-01 2009-04-01 Push-button control device for a watch
HK10104350.4A HK1138387A1 (en) 2008-04-01 2010-05-03 Push-button control device for a watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08153922A EP2107432B1 (en) 2008-04-01 2008-04-01 Pushbutton control device for a watch

Publications (2)

Publication Number Publication Date
EP2107432A1 EP2107432A1 (en) 2009-10-07
EP2107432B1 true EP2107432B1 (en) 2011-06-29

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08153922A Active EP2107432B1 (en) 2008-04-01 2008-04-01 Pushbutton control device for a watch

Country Status (8)

Country Link
US (1) US7967504B2 (en)
EP (1) EP2107432B1 (en)
JP (1) JP5346655B2 (en)
KR (1) KR101254373B1 (en)
CN (1) CN101576755B (en)
AT (1) ATE514978T1 (en)
HK (1) HK1138387A1 (en)
SG (1) SG155875A1 (en)

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KR101045612B1 (en) 2010-12-13 2011-07-01 주식회사 대산엔지니어링 A push button switch mounted in pressure chamber
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CN104769511B (en) * 2012-11-02 2017-06-13 奥米加股份有限公司 For the device of the orientation of the screw-in element of clock and watch
EP2746873B1 (en) * 2012-12-21 2017-11-15 Meco S.A. Modular assembly of a push button
EP3451071B1 (en) * 2017-09-01 2020-07-22 Omega SA Device with push button for a timepiece
JP6912991B2 (en) * 2017-10-11 2021-08-04 株式会社東海理化電機製作所 Switch device
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
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JP6924417B2 (en) * 2019-03-25 2021-08-25 カシオ計算機株式会社 Cases, case manufacturing methods and watches
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Also Published As

Publication number Publication date
HK1138387A1 (en) 2010-08-20
US7967504B2 (en) 2011-06-28
KR101254373B1 (en) 2013-04-12
ATE514978T1 (en) 2011-07-15
US20090251999A1 (en) 2009-10-08
EP2107432A1 (en) 2009-10-07
JP2009250979A (en) 2009-10-29
CN101576755A (en) 2009-11-11
CN101576755B (en) 2013-12-11
JP5346655B2 (en) 2013-11-20
SG155875A1 (en) 2009-10-29
KR20090105836A (en) 2009-10-07

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