EP0560220A1 - Method for opening a watch case and device for implementing this method - Google Patents

Method for opening a watch case and device for implementing this method Download PDF

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Publication number
EP0560220A1
EP0560220A1 EP93103538A EP93103538A EP0560220A1 EP 0560220 A1 EP0560220 A1 EP 0560220A1 EP 93103538 A EP93103538 A EP 93103538A EP 93103538 A EP93103538 A EP 93103538A EP 0560220 A1 EP0560220 A1 EP 0560220A1
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EP
European Patent Office
Prior art keywords
enclosure
suction cup
ice
box
overpressure
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.)
Granted
Application number
EP93103538A
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German (de)
French (fr)
Other versions
EP0560220B1 (en
Inventor
Marc-André Miche
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.)
Swatch Group Management Services AG
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Swatch Group Management Services AG
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Publication date
Application filed by Swatch Group Management Services AG filed Critical Swatch Group Management Services AG
Publication of EP0560220A1 publication Critical patent/EP0560220A1/en
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Publication of EP0560220B1 publication Critical patent/EP0560220B1/en
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D1/00—Gripping, holding, or supporting devices
    • G04D1/10—Devices for opening or closing watch bottoms or covers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49579—Watch or clock making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49815—Disassembling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49998—Work holding
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/5347—Crystal to watch or clock

Definitions

  • the present invention relates to a method for opening a watch case by extracting the ice.
  • the movement can only be assembled from the top of the middle, after which the glass is tightly placed, for example by means of a seal interposed between the edge of the crystal and the inner edge of the middle or of the bezel.
  • This procedure is generally reserved for mineral ice or sapphires. If we have to repair the movement, we have no other resource than to extract the ice from its seat after which the movement can be taken out of the box.
  • the method according to the invention is characterized in that it comprises the succession of the following stages: the box is fixed in an enclosure, a suction cup is applied to the glass, the interior of the enclosure is subjected just as the interior of the box at the same determined overpressure, exerts a pulling force on the suction cup until the ice is extracted, and restores the normal pressure in the enclosure to take out the box stripped of its ice.
  • an apparatus characterized in that it comprises a frame in which is housed a pump, an enclosure surmounting the frame and in which opens a conduit communicating with the pump, the enclosure comprising a device for fixing the watch case, said enclosure being surmounted by a removable cover closing off its upper part, said cover being provided with a valve and a rod, the latter being slidably mounted through the cover and bearing , to his end located in the enclosure, a suction cup capable of being applied against the ice to be extracted from the box.
  • the watch case 1 is fixed in an enclosure 3.
  • a suction cup is applied 4.
  • the interior 5 of the enclosure and the interior of the watch are both subjected to the same overpressure. determined, which will have the effect of applying the suction cup to the ice with a force proportional to the overpressure prevailing in the enclosure.
  • a traction force A is exerted on the suction cup until the ice is extracted.
  • FIGS. 1 and 2 describe a specific device making it possible to implement this process.
  • the apparatus comprises a frame 14 in which there is a pump (not shown), a pump actuated by a lever 37.
  • a cylindrical enclosure 3 surmounts the frame 14 to which it is fixed by means of two tie rods 39. This enclosure is located under the form of a transparent tube into which a conduit 15 which communicates with the pump opens.
  • the upper part 41 of the enclosure 3 is closed by a removable cover 17. This cover is fixed to the enclosure by means of two chickens 33. The seal between the upper part 41 of the enclosure and the cover 17 is ensured by an O-ring 31.
  • the cover 17 is provided with a valve 18 to let out the overpressure air when it is pressed on its rod.
  • the cover is crossed by a rod 19 slidably mounted in the center of the cover, another O-ring lining 32 ensuring the seal of the rod.
  • One end of the rod 19 is provided with an operating handle 40, while the other end, that located inside the enclosure, is equipped with a suction cup 4 capable of being applied against the ice 2 which is to be extracted from watch case 1.
  • FIG. device 16 first comprises a cylindrical block 27 having a channel 35 to allow the conduit 15 to pass and four threaded rods 30, screwed into the block 27 and extending to the cover 17. On this block 27 the box 1 is placed , bottom against the block.
  • the device 16 also includes a ring 28, the central opening 36 of which has a diameter slightly larger than the diameter of the crystal 2. This ring also includes a channel 34 for letting the conduit pass. 15 and four holes which allow the ring to be threaded into the threaded rods 30.
  • FIG. 3 shows a box 1 having a middle part 7 made in one piece with the bottom 8.
  • the movement 11 comprises a crown 10 with a broken rod 9 which can be separated from the part 42 adjoining the movement.
  • the interior space 6 will be connected by the tube 43 to the exterior space 5 prevailing in the enclosure 3.
  • the base 8 is placed on the block 27 and the middle part 7 is retained by the ring 28.
  • the suction cup 4 is applied to the crystal 2 then the pressure in the enclosure is increased to a determined value from which a force can be exerted pulling on the suction cup to extract the ice.
  • FIG. 4 shows a case 1 which has a bottom 12 separate from the middle part 13, but where the movement 11 can only be taken out from the middle part from above.
  • the first suction cup 4 which comes to mind to tear off the ice is the conical suction cup 20 shown in FIG. 2.
  • This suction cup is retained at the end of the rod 19 by means of the screw 24.
  • the suction cup shown in detail in FIG. 5 it is preferable to use the suction cup shown in detail in FIG. 5.
  • the suction cup of Figure 5 essentially comprises an O-ring 21 which is applied against the glass 2 to be extracted.
  • the seal 21 is trapped between two circular elements 22 and 23 and retained by circular claws 25 and 26.
  • the elements 22 and 23 are fixed to the rod 19 by means of a screw 24.
  • the seal 21 can be of well-controlled quality and is securely attached to the rod 19. A hardness of the order of 70 shores for the joint gives good results.
  • the extraction force In the case of an overpressure of 4 bars and a suction cup diameter of 15 mm, the extraction force will be 70.7 N. By increasing the overpressure to 6 bars, the extraction force will be 106 N At an atmospheric pressure of 1 bar and with the same 15 mm suction cup, the extraction force is only 17.6 N, a force which is incapable of extracting the ice from its housing.
  • the apparatus shown in perspective in FIG. 1 is identical to apparatus No. 5555 supplied by the company Bergeon & Cie SA, CH-2400 Le Locle, except as regards the setting 16 and the suction cup 4 which have been added to it.
  • the device No 5555 is used for the water resistance test of watches. We see that by providing it with a removable fitting 16 and a new cover 17 fitted with a suction cup 4, the basic device can be used to fulfill a new function, the old function can be found very quickly if necessary.

Abstract

For opening the watch case (1) by extracting the glass (2), this case is fixed in an enclosure (3), after having removed its crown and its stem. A sucker (4) is then applied onto the glass, this sucker being capable of being operated from outside the enclosure using a handle (40). By using a pump controlled by a lever (37), the enclosure is subjected to a defined overpressure, after which a pulling force (A) is exerted on the sucker until the glass is extracted. Since the overpressure is the same outside and inside the case, no displacement of air, and therefore no damage to the mechanism of the watch, is produced when the glass is separated from the case. <IMAGE>

Description

La présente invention est relative à un procédé pour ouvrir une boîte de montre par extraction de la glace.The present invention relates to a method for opening a watch case by extracting the ice.

Lorsqu'une boîte de montre comporte une carrure venue de fabrication en une pièce avec le fond, le montage du mouvement ne peut se faire que par le haut de carrure après quoi la glace est mise en place de manière étanche par exemple au moyen d'un joint interposé entre la tranche de la glace et le bord intérieur de la carrure ou de la lunette. Cette façon de faire est généralement réservée aux glaces minérales ou saphirs. Si l'on doit réparer le mouvement, on n'a pas d'autres ressources que d'extraire la glace de son siège après quoi le mouvement peut être sorti de la boîte.When a watch case has a middle part made in one piece with the back, the movement can only be assembled from the top of the middle, after which the glass is tightly placed, for example by means of a seal interposed between the edge of the crystal and the inner edge of the middle or of the bezel. This procedure is generally reserved for mineral ice or sapphires. If we have to repair the movement, we have no other resource than to extract the ice from its seat after which the movement can be taken out of the box.

Si la glace dépasse de la carrure, il serait possible d'utiliser un outil présentant une multitude de mors capables de basculer par l'action de leviers, comme cela est décrit par exemple dans le document US-A-3 074 156. Il est certain cependant que cet outil blesse la périphérie de la glace et y laisse des égratignures obligeant à recourir à un glace neuve. L'outil mentionné ci-dessus est spécifique au démontage des glaces synthétiques.If the glass protrudes from the middle part, it would be possible to use a tool having a multitude of jaws capable of tilting by the action of levers, as described for example in document US-A-3,074,156. certain, however, that this tool injures the periphery of the glass and leaves scratches on it, requiring the use of new glass. The tool mentioned above is specific to dismantling synthetic windows.

Dans le cas où la face supérieure de la glace se trouve au même niveau que la carrure, ce qui est le cas des glaces minérales et saphir, ou dans le cas où l'utilisation d'une pince n'est pas souhaitée, l'on a alors recours à un procédé d'extraction de la glace en la chassant sous pression comme cela est décrit par exemple dans le document CH-A-376 437. Ce procédé demande qu'on augmente la pression régnant à l'intérieur de la boîte jusqu'à ce que la glace sorte de son logement. Pour ce faire, on arrache la première partie de la tige brisée dont le mouvement est généralement équipé et on raccorde l'entrée ainsi créée au conduit de sortie d'une pompe qui va permettre d'augmenter la pression à l'intérieur de la boîte, jusqu'à ce que la glace soit chassée hors de son logement. Une telle pompe est décrite dans le document CH-A-541 181. Cependant, comme une pression de l'ordre de 3 à 4 bars est nécessaire pour extraire la glace, on comprendra qu'au moment où cette glace est expulsée de son siège, il se produit un violent déplacement d'air à l'intérieur de la boîte, même si on a pris soin de proportionner la capacité de la pompe au volume de la boîte à ouvrir. Selon la construction de la montre, ce déplacement d'air peut amener des dégâts à certains éléments intérieurs à la montre. On a vu par exemple, des cadrans et des aiguilles faussés, des spiraux déréglés, des disques de calendrier pliés ou encore des paliers vidés de leur huile.In the case where the upper face of the crystal is at the same level as the middle part, which is the case for mineral and sapphire crystal, or in the case where the use of pliers is not desired, the we then use a method of extracting the ice by chasing it under pressure as described for example in document CH-A-376 437. This method requires that the pressure prevailing inside the box until the ice comes out of its housing. To do this, we tear off the first part of the broken rod whose movement is generally equipped and the inlet thus created is connected to the outlet pipe of a pump which will allow the pressure inside the box to be increased, until the ice is driven out of its housing. Such a pump is described in document CH-A-541 181. However, as a pressure of the order of 3 to 4 bars is necessary to extract the ice, it will be understood that at the time when this ice is expelled from its seat , there is a violent displacement of air inside the box, even if care has been taken to proportion the capacity of the pump to the volume of the box to open. Depending on the construction of the watch, this movement of air can cause damage to certain elements inside the watch. We have seen, for example, distorted dials and hands, unbalanced hairsprings, folded calendar disks or bearings emptied of their oil.

Pour obvier aux inconvénients cités, le procédé selon l'invention est caractérisé par le fait qu'il comporte la succession des étapes suivantes : on fixe la boîte dans une enceinte, applique une ventouse sur la glace, soumet l'intérieur de l'enceinte de même que l'intérieur de la boîte à une même surpression déterminée, exerce une force de traction sur la ventouse jusqu'à extraction de la glace, et rétablit la pression normale dans l'enceinte pour sortir la boîte débarrassée de sa glace.To obviate the aforementioned drawbacks, the method according to the invention is characterized in that it comprises the succession of the following stages: the box is fixed in an enclosure, a suction cup is applied to the glass, the interior of the enclosure is subjected just as the interior of the box at the same determined overpressure, exerts a pulling force on the suction cup until the ice is extracted, and restores the normal pressure in the enclosure to take out the box stripped of its ice.

Pour la mise en oeuvre du procédé de l'invention il est proposé un appareil caractérisé en ce qu'il comporte un bâti dans lequel est logée une pompe, une enceinte surmontant le bâti et dans laquelle débouche un conduit communiquant avec la pompe, l'enceinte comportant un dispositif de fixation de la boîte de montre, ladite enceinte étant surmontée par un couvercle amovible obturant sa partie supérieure, ledit couvercle étant muni d'une soupape et d'une tige, cette dernière étant montée coulissante à travers le couvercle et portant, à son extrémité située dans l'enceinte, une ventouse susceptible d'être appliquée contre la glace à extraire de la boîte.For the implementation of the method of the invention there is provided an apparatus characterized in that it comprises a frame in which is housed a pump, an enclosure surmounting the frame and in which opens a conduit communicating with the pump, the enclosure comprising a device for fixing the watch case, said enclosure being surmounted by a removable cover closing off its upper part, said cover being provided with a valve and a rod, the latter being slidably mounted through the cover and bearing , to his end located in the enclosure, a suction cup capable of being applied against the ice to be extracted from the box.

L'invention va être comprise maintenant à l'aide de la description qui suit et du dessin qui l'illustre et dans lequel :

  • la figure 1 est une vue en perspective d'un exemple d'appareil utilisé pour mettre en oeuvre le procédé selon l'invention,
  • la figure 2 est une coupe dans une partie de l'appareil montré en figure 1, cette coupe présentant une ventouse selon un premier mode d'exécution,
  • la figure 3 est une coupe dans une boîte de montre présentant une carrure faite d'une pièce avec un fond,
  • la figure 4 est une coupe dans une boîte de montre dessinée avec fond enlevé et où le mouvement n'est accessible qu'après extraction de la glace, et
  • la figure 5 montre une autre forme d'exécution de la ventouse équipant l'appareil présenté en figure 2.
The invention will now be understood with the aid of the description which follows and of the drawing which illustrates it and in which:
  • FIG. 1 is a perspective view of an example of an apparatus used to implement the method according to the invention,
  • FIG. 2 is a section through part of the device shown in FIG. 1, this section having a suction cup according to a first embodiment,
  • FIG. 3 is a section through a watch case having a middle part made of a piece with a bottom,
  • FIG. 4 is a section in a watch case drawn with the bottom removed and where the movement is only accessible after extraction of the ice, and
  • FIG. 5 shows another embodiment of the suction cup fitted to the device presented in FIG. 2.

On se référera à la figure 1 pour expliquer le procédé de l'invention. La boîte de montre 1 est fixée dans une enceinte 3. Sur la glace 2 de la montre on applique une ventouse 4. On soumet ensuite à la fois l'intérieur 5 de l'enceinte et l'intérieur de la montre à une même surpression déterminée, ce qui aura pour effet d'appliquer la ventouse sur la glace avec une force proportionnelle à la surpression régnant dans l'enceinte. On exerce enfin une force de traction A sur la ventouse jusqu'à extraction de la glace. Une fois la glace séparée de la boîte, on rétablit la pression normale (pression atmosphérique) dans l'enceinte ce qui permet de sortir la boîte de l'enceinte, cette boîte étant alors débarrassée de sa glace.Reference will be made to FIG. 1 to explain the process of the invention. The watch case 1 is fixed in an enclosure 3. On the crystal 2 of the watch, a suction cup is applied 4. Next, the interior 5 of the enclosure and the interior of the watch are both subjected to the same overpressure. determined, which will have the effect of applying the suction cup to the ice with a force proportional to the overpressure prevailing in the enclosure. Finally, a traction force A is exerted on the suction cup until the ice is extracted. Once the ice has been separated from the box, normal pressure (atmospheric pressure) is restored in the enclosure, which allows the box to be removed from the enclosure, this box then being freed of its ice.

Le principe du procédé ayant été expliqué, on se référera plus particulièrement aux figures 1 et 2 pour décrire un appareil spécifique permettant de mettre en oeuvre ce procédé.The principle of the process having been explained, reference will be made more particularly to FIGS. 1 and 2 for describe a specific device making it possible to implement this process.

L'appareil comporte un bâti 14 dans lequel se trouve une pompe (non représentée), pompe actionnée par un levier 37. Une enceinte cylindrique 3 surmonte le bâti 14 auquel elle est fixée au moyen de deux tirants 39. Cette enceinte se présente sous la forme d'un tube transparent dans lequel débouche un conduit 15 qui communique avec la pompe. La partie supérieure 41 de l'enceinte 3 est obturée par un couvercle amovible 17. Ce couvercle est fixé à l'enceinte au moyen de deux poulets 33. L'étanchéité entre la partie supérieure 41 de l'enceinte et le couvercle 17 est assurée par une garniture torique 31. Le couvercle 17 est muni d'une soupape 18 pour laisser échapper l'air en surpression quand on presse sur sa tige. Enfin le couvercle est traversé par une tige 19 montée coulissante au centre du couvercle, une autre garniture torique 32 assurant l'étanchéité de la tige. Une extrémité de la tige 19 est munie d'une poignée de manoeuvre 40, alors que l'autre extrémité, celle se trouvant à l'intérieur de l'enceinte, est équipée d'une ventouse 4 susceptible d'être appliquée contre la glace 2 qui est à extraire de la boîte de montre 1.The apparatus comprises a frame 14 in which there is a pump (not shown), a pump actuated by a lever 37. A cylindrical enclosure 3 surmounts the frame 14 to which it is fixed by means of two tie rods 39. This enclosure is located under the form of a transparent tube into which a conduit 15 which communicates with the pump opens. The upper part 41 of the enclosure 3 is closed by a removable cover 17. This cover is fixed to the enclosure by means of two chickens 33. The seal between the upper part 41 of the enclosure and the cover 17 is ensured by an O-ring 31. The cover 17 is provided with a valve 18 to let out the overpressure air when it is pressed on its rod. Finally, the cover is crossed by a rod 19 slidably mounted in the center of the cover, another O-ring lining 32 ensuring the seal of the rod. One end of the rod 19 is provided with an operating handle 40, while the other end, that located inside the enclosure, is equipped with a suction cup 4 capable of being applied against the ice 2 which is to be extracted from watch case 1.

Pour arracher la glace 2, il est bien sûr indispensable de fixer solidement la boîte à l'intérieur de l'enceinte 3. Ces moyens de fixation 16 peuvent être très variés et un mode de réalisation est présenté en détail à la figure 2. Le dispositif 16 comporte d'abord un bloc cylindrique 27 présentant un canal 35 pour laisser passer le conduit 15 et quatre tiges filetées 30, vissées dans le bloc 27 et s'étendant jusqu'au couvercle 17. Sur ce bloc 27 on pose la boîte 1, fond contre le bloc. Le dispositif 16 comporte encore un anneau 28 dont l'ouverture centrale 36 présente un diamètre légèrement plus grand que le diamètre de la glace 2. Cet anneau comprend aussi un canal 34 pour laisser passer le conduit 15 et quatre trous qui permettent d'enfiler l'anneau dans les tiges filetées 30. On fait glisser l'anneau jusqu'à ce qu'il prenne appui sur la boîte 1, puis on serre quatre poulets moletés 29 vissés sur les tiges 30. Cet ensemble 16 est ensuite introduit dans l'enceinte 3. On applique alors le couvercle 17 avec sa tige 19 et sa ventouse 4 sur l'enceinte et on bloque les poulets 33. On écrase la ventouse contre la glace en faisant descendre la tige 19 dans l'enceinte. Dès que l'on sent une bonne application de la ventouse, on commence à augmenter la pression dans l'enceinte 3 en impartissant des mouvements de va-et-vient au levier 37 qui actionne la pompe. Quand la surpression a atteint une valeur suffisante qui peut être contrôlée par le manomètre 38, on exerce une force de traction dans le sens de la flèche A sur la poignée 40 de la tige 19 et ceci jusqu'à ce que la glace cède. Quand la glace a cédé, on rétablit la pression normale dans l'enceinte en pressant sur la soupape 18 et on peut alors libérer le couvercle 17 ainsi que le boîtier 1 avec son posage 16.To tear off the glass 2, it is of course essential to securely fix the box inside the enclosure 3. These fixing means 16 can be very varied and an embodiment is presented in detail in FIG. device 16 first comprises a cylindrical block 27 having a channel 35 to allow the conduit 15 to pass and four threaded rods 30, screwed into the block 27 and extending to the cover 17. On this block 27 the box 1 is placed , bottom against the block. The device 16 also includes a ring 28, the central opening 36 of which has a diameter slightly larger than the diameter of the crystal 2. This ring also includes a channel 34 for letting the conduit pass. 15 and four holes which allow the ring to be threaded into the threaded rods 30. The ring is slid until it rests on the box 1, then four knurled chickens 29 are screwed onto the rods 30 This assembly 16 is then introduced into the enclosure 3. The cover 17 is then applied with its rod 19 and its suction cup 4 to the enclosure and the chickens 33 are blocked. The suction cup is crushed against the ice by lowering the rod 19 on the premises. As soon as we feel a good application of the suction cup, we begin to increase the pressure in the enclosure 3 by imparting back and forth movements to the lever 37 which actuates the pump. When the overpressure has reached a sufficient value which can be controlled by the pressure gauge 38, a tensile force is exerted in the direction of arrow A on the handle 40 of the rod 19 and this until the ice breaks. When the ice has failed, normal pressure is restored in the enclosure by pressing on the valve 18 and we can then release the cover 17 as well as the housing 1 with its fitting 16.

On a déjà dit que pour éviter tout déplacement d'air, - et par voie de conséquence tout dommage à des pièces se trouvant à l'intérieur de la montre - au moment de l'extraction de la glace, l'invention prévoit de soumettre l'intérieur comme l'extérieur de la boîte à une même surpression. Cela présuppose que l'espace intérieur de la boîte soit relié à son espace extérieur. On peut créer une telle communication de diverses manières.It has already been said that in order to avoid any displacement of air - and consequently any damage to parts inside the watch - at the time of the extraction of the crystal, the invention plans to subject inside and outside of the box at the same overpressure. This presupposes that the interior space of the box is connected to its exterior space. There are many ways to create such communication.

La figure 3 montre une boîte 1 ayant une carrure 7 faite d'une pièce avec le fond 8. Dans cette construction, il est nécessaire d'arracher la tige pour créer la communication entre les deux espaces. La figure 3 montre que le mouvement 11 comporte une couronne 10 avec tige brisée 9 qui peut être séparée de la partie 42 attenante au mouvement. Quand on aura déposé couronne et tige, l'espace intérieur 6 sera relié par le tube 43 à l'espace extérieur 5 régnant dans l'enceinte 3. On pose le fond 8 sur le bloc 27 et on retient la carrure 7 par l'anneau 28. On applique la ventouse 4 sur la glace 2 puis on augmente la pression dans l'enceinte jusqu'à une valeur déterminée à partir de laquelle on peut exercer une force de traction sur la ventouse pour extraire la glace.Figure 3 shows a box 1 having a middle part 7 made in one piece with the bottom 8. In this construction, it is necessary to tear off the rod to create communication between the two spaces. FIG. 3 shows that the movement 11 comprises a crown 10 with a broken rod 9 which can be separated from the part 42 adjoining the movement. When the crown and stem have been deposited, the interior space 6 will be connected by the tube 43 to the exterior space 5 prevailing in the enclosure 3. The base 8 is placed on the block 27 and the middle part 7 is retained by the ring 28. The suction cup 4 is applied to the crystal 2 then the pressure in the enclosure is increased to a determined value from which a force can be exerted pulling on the suction cup to extract the ice.

La figure 4 montre une boîte 1 qui comporte un fond 12 distinct de la carrure 13, mais où le mouvement 11 ne peut être sorti de la carrure que par le haut. Dans ce cas, on peut, avant de placer la boîte dans l'enceinte 3, enlever le fond 12 et poser la boîte dépourvue de son fond sur le bloc 27. Il y aura alors communication entre l'espace intérieur 6 et l'espace 5 de l'enceinte 3. De la même façon, on retient la boîte par l'anneau 28 puis on applique la ventouse 4 sur la face 2. On procède ensuite comme expliqué ci-dessus.FIG. 4 shows a case 1 which has a bottom 12 separate from the middle part 13, but where the movement 11 can only be taken out from the middle part from above. In this case, we can, before placing the box in the enclosure 3, remove the bottom 12 and place the box devoid of its bottom on the block 27. There will then be communication between the interior space 6 and the space 5 of the enclosure 3. In the same way, the box is retained by the ring 28 and then the suction cup 4 is applied to the face 2. Then we proceed as explained above.

Dans le cas où l'on a affaire à une montre électronique, on trouve souvent un puits de pile fermé par un couvercle et pratiqué dans le fond de la boîte. Dans ce cas, il suffit d'enlever ce couvercle pour créer la communication souhaitée.In the case where we are dealing with an electronic watch, we often find a battery well closed by a cover and made in the bottom of the box. In this case, simply remove this cover to create the desired communication.

La première ventouse 4 qui vient à l'esprit pour arracher la glace est la ventouse conique 20 représenté sur la figure 2. Cette ventouse est retenue à l'extrémité de la tige 19 au moyen de la vis 24. Comme ce type de ventouse, d'une part est difficile à fixer solidement sur la tige 19 et d'autre part présente souvent un matériau de qualité quelconque, on préférera utiliser la ventouse montrée en détail à la figure 5.The first suction cup 4 which comes to mind to tear off the ice is the conical suction cup 20 shown in FIG. 2. This suction cup is retained at the end of the rod 19 by means of the screw 24. Like this type of suction cup, on the one hand is difficult to fix securely on the rod 19 and on the other hand often has a material of any quality, it is preferable to use the suction cup shown in detail in FIG. 5.

La ventouse de la figure 5, de meilleure construction technique, comporte essentiellement un joint torique 21 qui vient s'appliquer contre la glace 2 à extraire. Le joint 21 est emprisonné entre deux éléments circulaires 22 et 23 et retenu par des griffes circulaires 25 et 26. Les éléments 22 et 23 sont fixés à la tige 19 au moyen d'une vis 24. Le joint 21 peut être de qualité bien contrôlée et est solidement amarré à la tige 19. Une dureté de l'ordre de 70 shores pour le joint donne de bons résultats.The suction cup of Figure 5, of better technical construction, essentially comprises an O-ring 21 which is applied against the glass 2 to be extracted. The seal 21 is trapped between two circular elements 22 and 23 and retained by circular claws 25 and 26. The elements 22 and 23 are fixed to the rod 19 by means of a screw 24. The seal 21 can be of well-controlled quality and is securely attached to the rod 19. A hardness of the order of 70 shores for the joint gives good results.

La surpression à faire régner à l'intérieur 5 de l'enceinte 3 va dépendre d'une part du diamètre de la ventouse, conditionné par le diamètre de la glace et d'autre part de la force de maintien de la glace dans son siège. On a constaté qu'une surpression pouvant être réglée entre deux et six bars répond à tous les besoins qui peuvent se présenter dans la pratique, compte tenu du fait que la force de maintien de la glace dans son siège est en tout cas supérieure à 50 Newtons (N). Si P est la surpression en bar et r le rayon extérieur de la ventouse en mm, la force d'extraction F en Newton s'écrira :

F (N) = π . r² (mm²) . 10⁻¹ . P (bar)

Figure imgb0001

The overpressure to prevail inside 5 of the enclosure 3 will depend on the one hand on the diameter of the suction cup, conditioned by the diameter of the glass and on the other hand on the force of holding the glass in its seat . It has been found that an overpressure which can be adjusted between two and six bars meets all the needs which may arise in practice, taking into account that the force for holding the ice in its seat is in any case greater than 50 Newtons (N). If P is the overpressure in bar and r the outside radius of the suction cup in mm, the extraction force F in Newton will be written:

F (N) = π. r² (mm²). 10⁻¹. P (bar)
Figure imgb0001

Dans le cas d'une surpression de 4 bars et d'un diamètre de ventouse de 15 mm, la force d'extraction sera de 70,7 N. En augmentant la surpression à 6 bars, la force d'extraction sera de 106 N. A la pression atmosphérique de 1 bar et avec la même ventouse de 15 mm, la force d'extraction n'est que de 17,6 N, force impropre à extraire la glace de son logement.In the case of an overpressure of 4 bars and a suction cup diameter of 15 mm, the extraction force will be 70.7 N. By increasing the overpressure to 6 bars, the extraction force will be 106 N At an atmospheric pressure of 1 bar and with the same 15 mm suction cup, the extraction force is only 17.6 N, a force which is incapable of extracting the ice from its housing.

Suivant la force d'ancrage de la glace dans son siège, il peut arriver qu'il faille exercer une force considérable sur la poignée 40 de la tige 19. Pour faciliter la manoeuvre de la tige, on comprend qu'on peut lui adjoindre un système à crémaillère et bras de levier sur lequel la force à exercer reste raisonnable.Depending on the anchoring force of the glass in its seat, it may happen that it is necessary to exert a considerable force on the handle 40 of the rod 19. To facilitate the maneuvering of the rod, it is understood that it can be added a rack and lever system on which the force to be exerted remains reasonable.

L'appareil montré en perspective en figure 1 est identique à l'appareil No 5555 fourni par la société Bergeon & Cie SA, CH-2400 Le Locle, sauf en ce qui concerne le posage 16 et la ventouse 4 qui lui ont été rajoutés. L'appareil No 5555 est utilisé pour le contrôle d'étanchéité des montres. On voit qu'en le dotant d'un posage amovible 16 et d'un nouveau couvercle 17 équipé d'une ventouse 4, l'appareil de base peut être mis à profit pour remplir une nouvelle fonction, l'ancienne fonction pouvant être retrouvée très rapidement si nécessaire.The apparatus shown in perspective in FIG. 1 is identical to apparatus No. 5555 supplied by the company Bergeon & Cie SA, CH-2400 Le Locle, except as regards the setting 16 and the suction cup 4 which have been added to it. The device No 5555 is used for the water resistance test of watches. We see that by providing it with a removable fitting 16 and a new cover 17 fitted with a suction cup 4, the basic device can be used to fulfill a new function, the old function can be found very quickly if necessary.

Claims (7)

Procédé pour ouvrir une boîte de montre (1) par extraction de la glace (2), caractérisé par le fait qu'il comporte la succession des étapes suivantes : on fixe la boîte dans une enceinte (3), applique une ventouse (4) sur la glace, soumet l'intérieur (5) de l'enceinte de même que l'intérieur (6) de la boîte à une même surpression déterminée, exerce une force de traction (A) sur la ventouse jusqu'à extraction de la glace, et rétablit la pression normale dans l'enceinte pour sortir la boîte débarrassée de sa glace.Method for opening a watch case (1) by extracting the crystal (2), characterized in that it comprises the following stages: the box is fixed in an enclosure (3), a suction cup (4) is applied on the ice, subjects the interior (5) of the enclosure as well as the interior (6) of the box to the same determined overpressure, exerts a traction force (A) on the suction cup until extraction of the ice, and restores normal pressure in the enclosure to take out the box cleared of its ice. Procédé selon la revendication 1, caractérisé par le fait que la surpression peut être réglée entre deux et six bars.Method according to claim 1, characterized in that the overpressure can be adjusted between two and six bars. Procédé selon la revendication 1, caractérisé par le fait que si la boîte de montre comporte une carrure (7) venue de fabrication en une pièce avec le fond (8), on enlève la tige (9) et la couronne (10) que présente le mouvement (11) avant d'exercer la surpression dans l'enceinte.Method according to claim 1, characterized in that if the watch case has a middle part (7) which has been manufactured in one piece with the base (8), the rod (9) and the crown (10) which are present are removed. the movement (11) before exerting the overpressure in the enclosure. Procédé selon la revendications 1, caractérisé par le fait que si la boîte de montre comporte un fond (12) distinct de la carrure (13), on enlève le fond avant d'exercer la surpression dans l'enceinte.Method according to claim 1, characterized in that if the watch case has a base (12) separate from the middle part (13), the base is removed before exerting the overpressure in the enclosure. Appareil pour la mise en oeuvre du procédé selon la revendication 1, caractérisé par le fait qu'il comporte un bâti (14) dans lequel est logée une pompe, une enceinte (3) surmontant le bâti et dans laquelle débouche un conduit (15) communiquant avec la pompe, l'enceinte comportant un dispositif de fixation (16) de la boîte de montre, ladite enceinte étant surmontée par un couvercle amovible (17) obturant sa partie supérieure, ledit couvercle étant muni d'une soupape (18) et d'une tige (19), cette dernière étant montée coulissante à travers le couvercle et portant, à son extrémité située dans l'enceinte, une ventouse (4) susceptible d'être appliqué contre la glace (2) à extraire de la boîte.Apparatus for implementing the method according to claim 1, characterized in that it comprises a frame (14) in which is housed a pump, an enclosure (3) surmounting the frame and in which opens a conduit (15) communicating with the pump, the enclosure comprising a fixing device (16) for the watch case, said enclosure being surmounted by a removable cover (17) closing off its upper part, said cover being provided with a valve (18) and a rod (19), the latter being slidably mounted through the cover and carrying, at its end located in the enclosure, a suction cup (4) capable of being applied against the ice (2) to be extracted from the box. Appareil selon la revendication 5, caractérisé par le fait que la ventouse présente sensiblement la forme d'un cône (20).Apparatus according to claim 5, characterized in that the suction cup has substantially the shape of a cone (20). Appareil selon la revendication 5, caractérisé par le fait que la ventouse (4) comporte un joint torique (21) emprisonné entre deux éléments (22, 23) susceptibles d'être démontés l'un par rapport à l'autre.Apparatus according to claim 5, characterized in that the suction cup (4) has an O-ring (21) trapped between two elements (22, 23) capable of being disassembled relative to each other.
EP93103538A 1992-03-09 1993-03-05 Method for opening a watch case and device for implementing this method Expired - Lifetime EP0560220B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH739/92A CH682200B5 (en) 1992-03-09 1992-03-09 Method for opening a watch case and apparatus for implementing this method.
CH739/92 1992-03-09

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EP0560220A1 true EP0560220A1 (en) 1993-09-15
EP0560220B1 EP0560220B1 (en) 1995-12-13

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EP (1) EP0560220B1 (en)
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US5718029A (en) * 1996-11-06 1998-02-17 Vanguard International Semiconductor Corporation Pre-installation of pumping line for efficient fab expansion
US20050281944A1 (en) * 2004-06-17 2005-12-22 Jang Bor Z Fluid-assisted self-assembly of meso-scale particles
CH703122B1 (en) * 2010-05-11 2015-01-15 Omega Sa Tools for extraction of watch glasses.
CN110308642A (en) * 2019-06-28 2019-10-08 杨少宏 A kind of method for dismounting of Watch glass lid
CN110174832A (en) * 2019-06-28 2019-08-27 杨少宏 A kind of Watch glass cover disassembling and assembling device
CN112296923B (en) * 2020-08-13 2022-07-15 杨少宏 Handheld clock glass detacher

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CH541181A (en) * 1964-03-03 1973-10-15 Certina Kurth Freres S A Pump to produce overpressure in a waterproof monocoque watch case in order to remove the ice
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Publication number Priority date Publication date Assignee Title
US10393369B2 (en) 2014-04-28 2019-08-27 General Electric Company System and method for fluid medium preheating

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JPH0611579A (en) 1994-01-21
DE69300992D1 (en) 1996-01-25
DE69300992T2 (en) 1996-08-01
CH682200GA3 (en) 1993-08-13
US5355571A (en) 1994-10-18
EP0560220B1 (en) 1995-12-13
CH682200B5 (en) 1994-02-15

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