EP0197518A1 - Watch case - Google Patents

Watch case Download PDF

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Publication number
EP0197518A1
EP0197518A1 EP86104591A EP86104591A EP0197518A1 EP 0197518 A1 EP0197518 A1 EP 0197518A1 EP 86104591 A EP86104591 A EP 86104591A EP 86104591 A EP86104591 A EP 86104591A EP 0197518 A1 EP0197518 A1 EP 0197518A1
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EP
European Patent Office
Prior art keywords
crystal
supports
glass
watch case
shape
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
EP86104591A
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German (de)
French (fr)
Other versions
EP0197518B1 (en
Inventor
Paul Gogniat
Renato Scarinzi
Françoise Albrecht
Marco Scarinzi
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
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Rado Uhren AG
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Publication date
Application filed by Rado Uhren AG filed Critical Rado Uhren AG
Publication of EP0197518A1 publication Critical patent/EP0197518A1/en
Application granted granted Critical
Publication of EP0197518B1 publication Critical patent/EP0197518B1/en
Expired legal-status Critical Current

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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
    • G04B39/00—Watch crystals; Fastening or sealing of crystals; Clock glasses
    • G04B39/02—Sealing crystals or glasses

Definitions

  • the present invention relates to a watch case and to a method of mounting this case which comprises a base, a middle part provided with a housing intended to receive a movement surmounted by a dial, a crystal whose peripheral zone covers the at least partially the middle part, an enlarging circle arranged between the movement and the middle part and comprising at least on its upper face a seal, at least two supports integral with the middle part and forming with it a groove in which the glass can be engaged and means for moving the enlargement circle that can be actuated from outside the box to compress said lining against the internal face of the crystal and block said crystal against said supports.
  • the grooves of the fixing members are defined by two facing surfaces between which the glass is engaged, the upper surface of the grooves pressing against the upper face of the glass.
  • the box further comprises means for applying the seal against the underside of the glass only after the ice has engaged in the grooves.
  • a glass having this shape is interesting on the one hand because it gives the impression that the watch is very thin provided that said glass is mounted edge to edge with the middle part at least over a significant part of its periphery and on the other hand because it has better impact resistance than if it were a flat glass.
  • the main object of the present invention is to provide a watch case whose crystal has at least in its peripheral zone a spherical shape with substantially constant thickness and whose middle has the shape of a portion of sphere whose radius is substantially equal to the radius presented by the internal face of the crystal in said peripheral zone. Furthermore, the way in which the crystal is fixed to the middle part remains that which has been described in connection with the cited patent and which has the same advantages already explained.
  • FIGS. 1, 2 and 3 show a watch case according to a first embodiment of the invention.
  • This box has a middle part 1 inside which is housed a movement 2 surmounted by a dial 3. Above the dial appear the hands 4.
  • the box also has a crystal 5 whose peripheral zone 6 completely covers the middle 1
  • An enlargement circle 7 is arranged between the movement 2 and the middle part 1.
  • the circle 7 carries on its upper part a seal 8.
  • the circle is arranged to further understand a second lining 9.
  • the box also has two supports 10 and 11 which face each other and which are integral with the middle part.
  • the supports 10 and 11 each have a portion 12 which projects beyond the side walls of the middle part.
  • a hole 13 in which a bar 14 is threaded to hold in place a bracelet 15.
  • the supports 10 and 11 form with the middle part 1 grooves 16 in which the crystal 5 can be engaged by its peripheral zone 6
  • the crystal 5 also carries on its lower face a metallization 29 intended to hide from the gaze the upper edge 19 of the middle part, the lining 8 and the flange 30.
  • Figure 2 shows a support 10 made in one piece with the middle part 1 and a portion 12 used to attach a bracelet. Note, however, that the support 10 could be integral with the middle without forming a single piece with it. It could for example be fixed there by means of screws. Similarly, the support 10 could not include the portion 12 and the hole 13 but a simple connecting piece to join the support to the middle part.
  • the box also includes means for moving the enlargement circle 7 which can be actuated from outside the box to compress the lining 8 against the internal face of the crystal 5. It can be seen in FIG. 2 that the box has a bottom 17 screwed to the middle 1 by screws 18.
  • the circle 7 is independent of the background. It is then necessary, to make the box waterproof from below, to provide the second lining 9. On the other hand, if the circle 7 were made in one piece with the bottom 17, the lining 9 would be superfluous.
  • the glass 5 has at least in its peripheral zone 6 a spherical shape of substantially constant thickness. In the figures, this sphericity is continuous over the entire ice. There could however be other embodiments where, beyond the peripheral zone 6, towards the center of the watch, the crystal would have another radius of curvature.
  • the upper face of the middle part referenced 19 has the shape of a portion of a sphere whose radius is substantially equal to the radius of the internal face 25 of the crystal belonging to the peripheral zone 6.
  • the glass once in place but not yet fixed, rests its inner spherical face on the top of the middle also having a spherical curvature of the same radius as that of the inner face of the glass.
  • FIG. 4 we will now refer to FIG. 4 to understand how the watch case according to the invention is assembled.
  • the middle part 1 is shown with its supports 10 and 11 which are integral with it.
  • the upper face 19 of the middle part has the shape of a portion of a sphere and forms with the supports 10 and 11 the grooves 16.
  • the crystal 5 is shown separated from the middle. Firstly, the internal face 25 of the crystal 5 is slid onto the upper face 19 of the middle in the direction of the arrow 20.
  • the glass is then animated by a rotating movement which naturally results from the sliding of the spherical surface. presented by the underside of the crystal on the portion of a sphere presented by the top of the middle 19.
  • the peripheral zones 6 of the crystal 5 are made to penetrate into the grooves 16 and this until the the periphery of the crystal coincides with the edge of the middle.
  • the seal is compressed (not shown in this figure) corere the inner face of the glass by actuating the means movement of the enlargement circle (not shown) to finally block the glass 5 against the supports 10 and 11.
  • the supports 10 and 11 extend on the upper face of the glass at least up to the right of the seal 8. This way of doing makes it possible to use very thin glass, of the order of 0.5 to 0.8 mm thick, because it avoids deformations which could arise at the location of the contact surfaces, which would result in poor sealing at the location of the edges of the glass not covered by the supports.
  • the watch case illustrated in FIGS. 1 to 4 also shows that we are dealing with a shape box where the crystal is a spherical cap cut in a rectangular configuration cut to match the shape of the box.
  • the supports 10 and 11 are located at the place of rectilinear portions presented by the periphery of the glass.
  • Other shapes could be envisaged for the periphery of the box.
  • supports 10 and 11 are used which extend over a large part of the rectilinear portions presented by the periphery of the box.
  • the internal face 21 of the supports 10 and 11 also to have the shape of a portion of a sphere whose radius is substantially equal to the radius of the external peripheral zone of the ice-cap. This way of doing indeed allows a good distribution of the blocking forces acting on the ice. It also gives the object a pleasant aesthetic form.
  • FIG. 5 is an alternative embodiment of the construction shown in FIG. 2. It is distinguished only by the shape of the groove 22 formed on the one hand by the support 23, the internal face of which is cut in a bevel and on the other hand by the portion of sphere presented by the top of the middle 19 as was already the case of the construction proposed in FIG. 2. In the construction of FIG. 5, the edge of the glass 5 is inclined to form the bevel 24.
  • the circle 7 is moved upwards and the lining 8 is compressed against the internal face of the glass to then block the beveled glass against the bevel of the support 23
  • the mounting of the case is the same as that which has been explained in connection with the preceding figures where, firstly, the internal face of the crystal is slid onto the upper face of the middle in a movement turning until the circumference of the glass coincides with the edge of the middle part and where, in a second step, the glass is blocked against the supports of the middle part.
  • FIG. 6 is a perspective view of a watch case according to the invention and according to a second embodiment.
  • This is a round box on which is fitted a crystal having the shape of a spherical cap with a circular periphery 26.
  • the middle part 1 the enlargement circle 7 in which is housed a housing the lining 8, the base 17 fixed to the middle of the screw means 18, the crystal 5, the movement 2 and the two supports facing each other which are in the form of claws 27 and 28.
  • the peripheral zone 6 completely covers the middle 1.
  • the supports 26 and 27 must be of small width and that the bottom of the grooves 16 must be straight to allow the overall diameter of the ice to pass during the introduction of it.
  • FIG. 6 clearly shows the very thin appearance of the watch case produced according to the means proposed by the present invention. This impression of thinness is given on the one hand by the fact that the crystal covers the middle part and on the other hand because the crystal is curved, which makes it possible to locate the peripheral zone of the crystal below the level of the dial 3.
  • Figure 7 is a top view of a watch case, partially mounted, according to a third embodiment of the invention.
  • the construction shown in Figure 7 shows two supports 37 and 38 extending over an important arc which makes mounting ia la impossible. are as explained in connection with figure 6.
  • a middle made made in two parts 30 and 31. For the assembly of the box, we begin by sliding the internal face of the crystal 5 onto the upper face of the middle part 30 according to the rotating movement already mentioned, until the glass comes to lodge at the bottom of the groove 16 formed by the support 37 and the middle 30.
  • the upper face of the middle 31 is slid under the glass in the direction of the arrow 39 until said glass fully penetrates into the groove formed in the middle part 31 and the support 38.
  • the two parts 30 and 31 are juxtaposed and touch each other by their edges 40 and 41.
  • the assembly is continued by introducing from below the circle sealing and movement and the whole is fixed securely together by screwing the base on the middle as has already been explained with reference to the previous figures.
  • this way of doing also allows the mounting of a middle part which carries more than two supports.
  • a middle part which carries more than two supports.
  • This way of doing things can also be implemented for boxes of rectangular shape where each of the four edges of the glass is retained by a support, two serving to hang a bracelet and the other two serving as decoration.
  • the positioning of the glass by sliding in an arc of a circle is the most suitable means for said positioning.
  • the supports are secured to the middle by screws for example, we could first apply ice to the middle from the top and then fix the supports afterwards. This way of doing, however, requires two simultaneous actions which complicate the reassembly and which can lead to breakage or deformation of the crystal because it will be necessary to press it while the supports are fixed to the middle. According to the present invention, we will first fix the supports and eisuite only we will proceed to the establishment of the ice puls its fixation by the displacement means described.

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  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Telephone Function (AREA)
  • Making Paper Articles (AREA)

Abstract

The watch case including a back cover, a caseband, a crystal, the peripheral zone of which entirely covers the caseband, a casing ring including at least one packing, a pair of supports facing one another fixed to the caseband and forming therewith a slot in which the crystal may be engaged and means for displacing the casing ring in order to compress the packing against the internal surface of the crystal and block said crystal against the supports. The crystal exhibits at least in its peripheral zone a spherical form of constant thickness. The upper surface of the caseband has the form of a part of a sphere the radius of which is substantially equal to that of the internal surface of the crystal. During assembly the internal surface of the crystal is made to slide over the upper surface of the caseband with a rotational motion resulting from the sliding of a spherical surface over part of a sphere.

Description

La présente invention est relative à une boite de montre et à un procédé de montage de cette boite qui comporte un fond, une carrure munie d'un logement destiné à recevoir un mouvement surmonté d'un cadran, une glace dont la zone périphérique recouvre au moins partiellement la carrure, un cercle d'agrandissement disposé entre le mouvement et la carrure et comportant au moins sur sa face supérieure une garniture d'étanchéité, au moins deux appuis solidaires de la carrure et formant avec elle une rainure dans laquelle la glace peut être engagée et des moyens de déplacement du cercle d'agrandissement actionnables de l'extérieur de la boite pour compresser ladite garniture contre la face interne de la glace et bloquer ladite glace contre lesdits appuis.The present invention relates to a watch case and to a method of mounting this case which comprises a base, a middle part provided with a housing intended to receive a movement surmounted by a dial, a crystal whose peripheral zone covers the at least partially the middle part, an enlarging circle arranged between the movement and the middle part and comprising at least on its upper face a seal, at least two supports integral with the middle part and forming with it a groove in which the glass can be engaged and means for moving the enlargement circle that can be actuated from outside the box to compress said lining against the internal face of the crystal and block said crystal against said supports.

Une boite de montre présentant les caractéristiques qui viennent d'être énumérés est connue du brevet CH-A-643 425 (=US-A-4.490.052). Elle comporte notamment une carrure à la surface supérieure de laquelle est assujettie une glace plane au moyen d'organes de fixation formant des rainures dans lesquelles les bords de la glace sont retenus après y avoir été engagés latéralement, et un joint d'étanchéité contre la périphérie de la face inférieure de la glace. Les rainures des organes de fixation sont définies par deux surfaces en regard entre lesquelles est engagée la glace, la surface supérieure des rainures s'appuyant contre la face supérieure de la glace. La boite comporte en outre des moyens pour n'appliquer le joint d'étanchéité contre la face inférieure de la glace qu'après l'engagement de la glace dans les rainures.A watch case having the characteristics which have just been listed is known from patent CH-A-643,425 (= US-A-4,490,052). It comprises in particular a middle part to the upper surface of which is fixed a flat glass by means of fixing members forming grooves in which the edges of the glass are retained after being engaged laterally, and a seal against the periphery of the underside of the ice. The grooves of the fixing members are defined by two facing surfaces between which the glass is engaged, the upper surface of the grooves pressing against the upper face of the glass. The box further comprises means for applying the seal against the underside of the glass only after the ice has engaged in the grooves.

Il est bien clair que l'invention décrite dans le brevet cité est réservée aux boites de montre équipées d'une glace plane et qu'elle n'apporte aucun enseignement qui permettrait de l'appliquer à une glace qui présenterait la forme d'une calotte sphérique.It is very clear that the invention described in the cited patent is reserved for watch cases equipped with a flat crystal and that it does not provide any teaching which would make it possible to apply it to a crystal which would have the shape of a spherical cap.

Or une glace présentant cette forme est intéressante d'une part parce qu'elle donne l'impression que la montre est très mince à condition que ladite glace soit montée bord à bord avec la carrure au moins sur une partie importante de son pourtour et d'autre part parce qu'elle présente une meilleure résistance aux chocs que s'il s'agissait d'une glace plane.However, a glass having this shape is interesting on the one hand because it gives the impression that the watch is very thin provided that said glass is mounted edge to edge with the middle part at least over a significant part of its periphery and on the other hand because it has better impact resistance than if it were a flat glass.

Aussi le but principal de la présente invention est de proposer une boîte de montre dont la glace présente au moins dans sa zone périphérique une forme sphérique à épaisseur sensiblement constante et dont la carrure présente la forme d'une portion de sphère dont le rayon est sensiblement égal au rayon que présente la face interne de la glace dans ladite zone périphérique. Par ailleurs, la façon dont est fixée la glace à la carrure reste celle qui a été décrite à propos du brevet cité et qui présente les mêmes avantages déjà exposés.Also the main object of the present invention is to provide a watch case whose crystal has at least in its peripheral zone a spherical shape with substantially constant thickness and whose middle has the shape of a portion of sphere whose radius is substantially equal to the radius presented by the internal face of the crystal in said peripheral zone. Furthermore, the way in which the crystal is fixed to the middle part remains that which has been described in connection with the cited patent and which has the same advantages already explained.

L'invention sera comprise maintenant à la lumière de la description qui suit et des dessins qui l'illustrent et qui donnent à titre d'exemple des formes d'exécution de ladite invention parmi lesquels:

  • - la figure 1 est une vue de dessus d'une boîte de montre selon l'invention et selon une première forme d'exécution,
  • - les figures 2 et 3 sont des coupes pratiquées dans la boite de la figure 1 respectivement selon les lignes II-II et III-III.
  • - la figure 4 est une vue en perspective qui montre le montage de la glace sur la carrure de la montre représentée en figure 1,
  • - la figure 5 est une variante d'exécution de la construction montrée en figure 2,
  • - la figure 6 est une vue en perspective d'une boîte de montre selon l'invention et selon une seconde forme d'exécution,
  • - la figure 7 est une vue de dessus d'une boite de montre, partiellement montée, selon une troisième forme d'exécution de l'invention.
The invention will now be understood in the light of the following description and the drawings which illustrate it and which give, by way of example, embodiments of the said invention, among which:
  • FIG. 1 is a top view of a watch case according to the invention and according to a first embodiment,
  • - Figures 2 and 3 are sections made in the box of Figure 1 respectively along lines II-II and III-III.
  • FIG. 4 is a perspective view which shows the mounting of the crystal on the middle of the watch shown in FIG. 1,
  • FIG. 5 is an alternative embodiment of the construction shown in FIG. 2,
  • FIG. 6 is a perspective view of a watch case according to the invention and according to a second embodiment,
  • - Figure 7 is a top view of a watch case, partially mounted, according to a third embodiment of the invention.

Les figures 1, 2 et 3 présentent une boite de montre selon un premier mode d'exécution de l'invention. Cette boite comporte une carrure 1 à l'intérieur de laquelle est logé un mouvement 2 surmonté d'un cadran 3. Au dessus du cadran apparaissent les aiguilles 4. La boite comporte encore une glace 5 dont la zone périphérique 6 recouvre entièrement la carrure 1. Un cercle d'agrandissement 7 est disposé entre le mouvement 2 et la carrure 1. Le cercle 7 porte sur sa partie supérieure une garniture d'étanchéité 8. Comme cela est montré en figures 2, le cercle est arrangé pour comprendre encore une seconde garniture 9. La boite comporte encore deux appuis 10 et 11 qui se font face et qui sont solidaires de la carrure 1. Les appuis 10 et 11 présentent chacun une portion 12 qui fait saillie au delà des parois latérales de la carrure. Dans cette portion 12 est pratiqué un trou 13 dans lequel une barrette 14 est enfilée pour maintenir en place un bracelet 15. Les appuis 10 et 11 forment avec la carrure 1 des rainures 16 dans lesquelles la glace 5 peut être engagée par sa zone périphérique 6. La glace 5 porte encore sur sa face inférieure une métallisation 29 destinée à cacher du regard le bord supérieur 19 de la carrure, la garniture 8 et le réhaut 30.Figures 1, 2 and 3 show a watch case according to a first embodiment of the invention. This box has a middle part 1 inside which is housed a movement 2 surmounted by a dial 3. Above the dial appear the hands 4. The box also has a crystal 5 whose peripheral zone 6 completely covers the middle 1 An enlargement circle 7 is arranged between the movement 2 and the middle part 1. The circle 7 carries on its upper part a seal 8. As shown in FIGS. 2, the circle is arranged to further understand a second lining 9. The box also has two supports 10 and 11 which face each other and which are integral with the middle part. The supports 10 and 11 each have a portion 12 which projects beyond the side walls of the middle part. In this portion 12 is made a hole 13 in which a bar 14 is threaded to hold in place a bracelet 15. The supports 10 and 11 form with the middle part 1 grooves 16 in which the crystal 5 can be engaged by its peripheral zone 6 The crystal 5 also carries on its lower face a metallization 29 intended to hide from the gaze the upper edge 19 of the middle part, the lining 8 and the flange 30.

La figure 2 montre un appui 10 fait d'une pièce avec la carrure 1 et une portion 12 servant à attacher un bracelet. On notera cependant que l'appui 10 pourrait être solidaire de la carrure sans former avec elle une seule pièce. Il pourrait par exemple y être fixé au moyen de vis. De même l'appui 10 pourrait ne pas comprendre la portion 12 et le trou 13 mais une simple pièce de liaison pour réunir l'appui à la carrure.Figure 2 shows a support 10 made in one piece with the middle part 1 and a portion 12 used to attach a bracelet. Note, however, that the support 10 could be integral with the middle without forming a single piece with it. It could for example be fixed there by means of screws. Similarly, the support 10 could not include the portion 12 and the hole 13 but a simple connecting piece to join the support to the middle part.

La boite comporte encore des moyens de déplacement du cercle d'agrandissement 7 qui sont actionnables de l'extérieur de la boite pour compresser la garniture 8 contre la face interne de la glace 5. On voit dans la figure 2 que la boite comporte un fond 17 vissé à la carrure 1 par des vis 18.The box also includes means for moving the enlargement circle 7 which can be actuated from outside the box to compress the lining 8 against the internal face of the crystal 5. It can be seen in FIG. 2 that the box has a bottom 17 screwed to the middle 1 by screws 18.

On comprend que lorsqu'on visse le fond 17, on déplace le cercle 7 vers le haut et l'on compresse ainsi la garniture 8 contre la face interne de la glace pour bloquer alors la glace contre les appuis 10 et 11 et rendre la boîte étanche par le dessus et sur tout son pourtour, le joint 8 présentant la forme d'un anneau faisant le tour de la boîte.We understand that when we screw the bottom 17, we move the circle 7 upwards and we compress the lining 8 against the inner face of the ice to then block the ice against the supports 10 and 11 and make the box waterproof from above and around its entire periphery, the seal 8 having the shape of a ring going around the box.

Selon la construction présentée en figure 2, le cercle 7 est indépendant du fond. Il est alors nécessaire, pour rendre la boite étanche par le dessous, de prévoir la seconde garniture 9. Par contre, si le cercle 7 était fabriqué d'une seule pièce avec le fond 17, la garniture 9 serait superflue.According to the construction shown in Figure 2, the circle 7 is independent of the background. It is then necessary, to make the box waterproof from below, to provide the second lining 9. On the other hand, if the circle 7 were made in one piece with the bottom 17, the lining 9 would be superfluous.

Selon la construction présente en figure 3, on s'aperçoit que le bord de la glace 6 affleure le bord de la carrure 1. Cette situation n'est pas nécessaire pour la mise en oeuvre de l'invention et on pourrait avoir des exécutions où la glace est légèrement en retrait Per repport à a carrure pour conférer à la montre une esthétique particufiere. Dans ce cas la zone périphérique 6 de la glace ne recouvrirait que partiellement la carrure.According to the construction shown in Figure 3, we see that the edge of the glass 6 is flush with the edge of the middle 1. This situation is not necessary for the implementation of the invention and we could have executions where the ice is slightly behind Per repport to a middle part to give the watch a particular aesthetic. In this case the peripheral zone 6 of the crystal would only partially cover the middle.

On en arrive maintenant à ce qui est le caractère essentiel de l'invention. Comme cela est bien visible aux figures 2 et 3, la glace 5 présente au moins dans sa zone périphérique 6 une forme sphérique d'épaisseur sensiblement constante. Dans les figures, cette sphéricité est continue sur la glace entière. On pourrait avoir cependant d'autres réalisation où, au delà de la zone périphérique 6, vers le centre de la montre, la glace aurait un autre rayon de courbure.We now come to what is the essential character of the invention. As is clearly visible in Figures 2 and 3, the glass 5 has at least in its peripheral zone 6 a spherical shape of substantially constant thickness. In the figures, this sphericity is continuous over the entire ice. There could however be other embodiments where, beyond the peripheral zone 6, towards the center of the watch, the crystal would have another radius of curvature.

Selon l'invention et comme on le voit aux figures 2 et 3, la face supérieure de la carrure référencée 19 présente la forme d'une portion de sphère dont le rayon est sensiblement égal au rayon de la face interne 25 de la glace appartenant à la zone périphérique 6.According to the invention and as can be seen in FIGS. 2 and 3, the upper face of the middle part referenced 19 has the shape of a portion of a sphere whose radius is substantially equal to the radius of the internal face 25 of the crystal belonging to the peripheral zone 6.

En d'autres termes, la glace une fois en place mais non fixée encore, repose sa face sphérique intérieure sur le haut de la carrure présentant lui aussi une courbure sphérique de même rayon que celui de la face intérieure 25 de la glace.In other words, the glass, once in place but not yet fixed, rests its inner spherical face on the top of the middle also having a spherical curvature of the same radius as that of the inner face of the glass.

On se reportera maintenant à la figure 4 pour comprendre comment on assemble la boite de montre selon l'invention. Dans cette figure on a représenté seulement la carrure 1 avec ses appuis 10 et 11 qui lui sont solidaires. La face supérieure 19 de la carrure présente la forme d'une portion de sphère et forme avec les appuis 10 et 11 les rainures 16. La glace 5 est représentée séparée de la carrure. Dans un premier temps on fait glisser la face interne 25 de la glace 5 sur la face supérieure 19 de la carrure dans la direction de la flèche 20. La glace est alors animée d'un mouvement tournant qui résulte naturellement du glissement de la surface sphérique présentée par la face inférieure de la glace sur la portion de sphère présentée par le haut de carrure 19. En poursuivant le même mouvement, on fait pénétrer les zones périphériques 6 de la glace 5 dans les rainures 16 et ceci jusqu'à ce que le pourtour de la glace coïncide avec le bord de la carrure. Dans un second temps, on compresse la garniture d'étanchéité (non représenté sur cette figure) corere la face interne de la glace en actionnant les moyens de déplacement du cercle d'agrandissement (non représenté) pour bloquer finalement la glace 5 contre les appuis 10 et 11.We will now refer to FIG. 4 to understand how the watch case according to the invention is assembled. In this figure only the middle part 1 is shown with its supports 10 and 11 which are integral with it. The upper face 19 of the middle part has the shape of a portion of a sphere and forms with the supports 10 and 11 the grooves 16. The crystal 5 is shown separated from the middle. Firstly, the internal face 25 of the crystal 5 is slid onto the upper face 19 of the middle in the direction of the arrow 20. The glass is then animated by a rotating movement which naturally results from the sliding of the spherical surface. presented by the underside of the crystal on the portion of a sphere presented by the top of the middle 19. Continuing the same movement, the peripheral zones 6 of the crystal 5 are made to penetrate into the grooves 16 and this until the the periphery of the crystal coincides with the edge of the middle. In a second step, the seal is compressed (not shown in this figure) corere the inner face of the glass by actuating the means movement of the enlargement circle (not shown) to finally block the glass 5 against the supports 10 and 11.

Comme on peut le voir encore sur les figures 1 et 2, les appuis 10 et 11 s'étendent sur la face supérieure de la glace au moins jusqu'au droit de la garniture d'étanchéité 8. Cette façon de faire permet d'utiliser des glaces très minces, de l'ordre de 0,5 à 0,8 mm d'épaisseur, car il évite des déformations qui pourraient prendre naissance à l'endroit des surfaces de contact, ce qui aurait pour conséquence une mauvaise étanchéité à l'endroit des bords de la glace non recouverts par les appuis.As can still be seen in Figures 1 and 2, the supports 10 and 11 extend on the upper face of the glass at least up to the right of the seal 8. This way of doing makes it possible to use very thin glass, of the order of 0.5 to 0.8 mm thick, because it avoids deformations which could arise at the location of the contact surfaces, which would result in poor sealing at the location of the edges of the glass not covered by the supports.

La boite de montre illustrée par les figures 1 à 4 montre aussi qu'on a affaire à une boîte de forme où la glace est une calotte sphérique tronquée selon une configuration rectangulaire taillée pour épouser la forme de la boîte. Les appuis 10 et 11 sont situés à l'endroit de portions rectilignes présentées par la périphérie de la glace. D'autres formes pourraient être envisagées pour le pourtour de la boite. On peut citer une forme présentant deux arrondis et deux plats ou encore une forme hexagonale. Dans toutes ces variantes d'exécution, il est possible d'utiliser une glace sphérique s'il est fait usage des moyens revendiqués.The watch case illustrated in FIGS. 1 to 4 also shows that we are dealing with a shape box where the crystal is a spherical cap cut in a rectangular configuration cut to match the shape of the box. The supports 10 and 11 are located at the place of rectilinear portions presented by the periphery of the glass. Other shapes could be envisaged for the periphery of the box. We can cite a shape with two rounded and two flat or a hexagonal shape. In all these alternative embodiments, it is possible to use a spherical lens if use is made of the means claimed.

Dans la construction particulière présentée aux figures 1 à 4, on utilise des appuis 10 et 11 qui s'étendent sur une grande partie des portions rectilignes présentées par le pourtour de la boîte. Dans ce cas on comprendra qu'il est nécessaire que la face interne 21 des appuis 10 et 11 présente également la forme d'une portion de sphère dont le rayon est sensiblemnent égal au rayon de la zone périphérique externe de la glace-calotte. Cette façon de faire permet en effet une bonne répartition des forces de blocage agissant sur la glace. Elle permet aussi de conférer à l'objet une forme esthétique agréable.In the particular construction presented in FIGS. 1 to 4, supports 10 and 11 are used which extend over a large part of the rectilinear portions presented by the periphery of the box. In this case, it will be understood that it is necessary for the internal face 21 of the supports 10 and 11 also to have the shape of a portion of a sphere whose radius is substantially equal to the radius of the external peripheral zone of the ice-cap. This way of doing indeed allows a good distribution of the blocking forces acting on the ice. It also gives the object a pleasant aesthetic form.

La figure 5 est une variante d'exécution de la construction montrée en figure 2. Elle ne s'en distingue que par la forme de la rainure 22 formée d'une part par l'appui 23 dont la face interne est taillée en biseau et d'autre part par la portion de sphère présentée par le haut de carrure 19 comme cela était déjà le cas de la construction proposée en figure 2. Dans la construction de la figure 5, le bord de la glace 5 est incliné pour former le biseau 24. Quand on applique is found 17 à la carrure 1 au moyen de vis 18, on déplace le cercle 7 vers haut et l'on compresse la garniture 8 contre la face interne de la glace pour bloquer alors la glace biseautée contre le biseau de l'appui 23. Dans cette variante, le montage de la befte est le même que celui qui a été expliqué à propos des figures précédentes où, dans un premier temps, on fait glisser la face interne de la glace sur la face supérieure de la carrure en un mouvement tournant jusqu'à ce que le pourtour de la glace coïncide avec le bord de la carrure et où, dans un second temps, on bloque la glace contre les appuis de la carrure.FIG. 5 is an alternative embodiment of the construction shown in FIG. 2. It is distinguished only by the shape of the groove 22 formed on the one hand by the support 23, the internal face of which is cut in a bevel and on the other hand by the portion of sphere presented by the top of the middle 19 as was already the case of the construction proposed in FIG. 2. In the construction of FIG. 5, the edge of the glass 5 is inclined to form the bevel 24. When we applies is found 17 to the middle 1 by means of screws 18, the circle 7 is moved upwards and the lining 8 is compressed against the internal face of the glass to then block the beveled glass against the bevel of the support 23 In this variant, the mounting of the case is the same as that which has been explained in connection with the preceding figures where, firstly, the internal face of the crystal is slid onto the upper face of the middle in a movement turning until the circumference of the glass coincides with the edge of the middle part and where, in a second step, the glass is blocked against the supports of the middle part.

La figure 6 est une vue en perspective d'une boite de montre selon l'invention et selon une seconde forme d'exécution. Il s'agit là d'une boîte ronde sur laquelle est ajustée une glace ayant la forme d'une calotte sphérique à pourtour circulaire 26. On reconnaît au dessin la carrure 1, le cercle d'agrandissement 7 dans lequel est pratiqué un logement recevant la garniture 8, le fond 17 fixé à la carrure du moyen de vis 18, la glace 5, le mouvement 2 et les deux appuis se faisant face qui se présentent sous la forme de griffes 27 et 28. La zone périphérique 6 recouvre entièrement la carrure 1. Pour pouvoir introduire la glace dans les rainures 16, on comprendra que les appuis 26 et 27 devront être de faible largeur et que le fond des rainures 16 devra être rectiligne pour laisser passer le diamètre hors-tout de la glace lors de l'introduction de celle-ci.Figure 6 is a perspective view of a watch case according to the invention and according to a second embodiment. This is a round box on which is fitted a crystal having the shape of a spherical cap with a circular periphery 26. We recognize in the drawing the middle part 1, the enlargement circle 7 in which is housed a housing the lining 8, the base 17 fixed to the middle of the screw means 18, the crystal 5, the movement 2 and the two supports facing each other which are in the form of claws 27 and 28. The peripheral zone 6 completely covers the middle 1. To be able to introduce the ice into the grooves 16, it will be understood that the supports 26 and 27 must be of small width and that the bottom of the grooves 16 must be straight to allow the overall diameter of the ice to pass during the introduction of it.

La figure 6 fait bien apparaître l'allure très mince de la boite de montre réalisée selon les moyens proposés par la présente invention. Cette impression de minceur est donnée d'une part par le fait que la glace recouvre la carrure et d'autre part parce que la glace est bombée, ce qui permet de situer la zone périphérique de la glace en dessous du niveau du cadran 3.FIG. 6 clearly shows the very thin appearance of the watch case produced according to the means proposed by the present invention. This impression of thinness is given on the one hand by the fact that the crystal covers the middle part and on the other hand because the crystal is curved, which makes it possible to locate the peripheral zone of the crystal below the level of the dial 3.

La figure 7 est une vue de dessus d'une boite de montre, partiellement montée, selon une troisième forme d'exécution de l'invention. On a dit à propos de la figure 6 que les appuis devaient être de faitle la geur si l'on voulait pouvoir introduire la glace. La construction présentée en figure 7 montre deux appuis 37 et 38 s'étendant sur an arc de cercle important qui rend impossible le montage ia la. are comme expliqué à propos de la figure 6. Pour contourner a difficulté , on utilise une carrure faite en deux parties 30 et 31. Pour le montage de la boite on commence par faire glisser la face interne de la glace 5 sur la face supérieure de la carrure 30 selon le mouvement tournant déjà cité, jusqu'à ce que la glace vienne se loger au fond de la rainure 16 formée par l'appui 37 et la carrure 30. Ensuite, par un même mouvement tournant, on fait glisser la face supérieure de la carrure 31 sous la glace dans le sens de la flèche 39 jusqu'à ce que ladite glace pénètre entièrement dans la rainure formée de la carrure 31 et de l'appui 38. A ce moment-là les deux parties 30 et 31 sont juxtaposées et se touchent par leurs bords 40 et 41. On poursuit le montage en introduisant par le dessous cercle d'étanchéité et mouvement et on fixe le tout solidement ensemble en venant visser le fond sur la carrure comme cela a déjà été expliqué à propos des figures précédentes.Figure 7 is a top view of a watch case, partially mounted, according to a third embodiment of the invention. We said about Figure 6 that the supports had to be de facto the geur if we wanted to be able to introduce the ice. The construction shown in Figure 7 shows two supports 37 and 38 extending over an important arc which makes mounting ia la impossible. are as explained in connection with figure 6. To circumvent with difficulty, one uses a middle made made in two parts 30 and 31. For the assembly of the box, we begin by sliding the internal face of the crystal 5 onto the upper face of the middle part 30 according to the rotating movement already mentioned, until the glass comes to lodge at the bottom of the groove 16 formed by the support 37 and the middle 30. Then, by the same rotating movement, the upper face of the middle 31 is slid under the glass in the direction of the arrow 39 until said glass fully penetrates into the groove formed in the middle part 31 and the support 38. At this time the two parts 30 and 31 are juxtaposed and touch each other by their edges 40 and 41. The assembly is continued by introducing from below the circle sealing and movement and the whole is fixed securely together by screwing the base on the middle as has already been explained with reference to the previous figures.

On notera que cette manière de faire permet aussi le montage d'une carrure qui porte plus de deux appuis. Par exemple dans le cas de la figure 7, outre les appuis 37 et 38 on pourrait avoir deux autres appuis situés en quadrature, à l'endroit des jonctions 40, 41. Ces autres appuis seraient alors faits chacun en deux parties, l'un appartenant à la carrure 30 et l'autre à la carrure 31. Cette manière de faire peut aussi être mise en oeuvre pour des boîtes de forme rectangulaire où chacun des quatre bords de la glace est retenu par un appui, deux servant à accrocher un bracelet et les deux autres servant de décoration.Note that this way of doing also allows the mounting of a middle part which carries more than two supports. For example in the case of FIG. 7, in addition to the supports 37 and 38, there could be two other supports located in quadrature, at the location of the junctions 40, 41. These other supports would then be each made in two parts, one belonging to the middle 30 and the other to the middle 31. This way of doing things can also be implemented for boxes of rectangular shape where each of the four edges of the glass is retained by a support, two serving to hang a bracelet and the other two serving as decoration.

Des descriptions des modes d'exécution qui viennent d'être données, on s'aperçoit que le système de mise en place ainsi que le blocage de la glace permet un montage très aisé de la boite de montre.Descriptions of the execution modes which have just been given, it can be seen that the installation system as well as the blocking of the glass allows very easy mounting of the watch case.

Dans le cas où les appuis sont réalisés d'une pièce avec la carrure, la mise en place de glace par glissement selon un arc de cercle est le moyen le plus approprié pour ladite mise en place. Dans le cas où les appuis sont solidaires de la carrure par des vis par exemple, on pourrait d'abord appliquer la glace sur la carrure par le haut puis fixer les appuis après coup. Cette manière de faire cependant exige deux actions simultanées qui compliquent le remontage et qui peuvent entraîner le bris ou la déformation de la glace car il sera nécessaire d'appuyer sur celle-ci pendant qu'on fixe les appuis à la carrure. Selon la présente invention, on fixera d'abord les appuis et eisuite seulement on procédera à la mise en place de la glace puls sa fixation par les moyens de déplacement décrits.In the case where the supports are made in one piece with the middle part, the positioning of the glass by sliding in an arc of a circle is the most suitable means for said positioning. In the case where the supports are secured to the middle by screws for example, we could first apply ice to the middle from the top and then fix the supports afterwards. This way of doing, however, requires two simultaneous actions which complicate the reassembly and which can lead to breakage or deformation of the crystal because it will be necessary to press it while the supports are fixed to the middle. According to the present invention, we will first fix the supports and eisuite only we will proceed to the establishment of the ice puls its fixation by the displacement means described.

Claims (8)

1. Boite de montre comportant un fond (17), une carrure (1, 30, 31) munie d'un logement destiné à recevoir un mouvement (2) surmonté d'un cadran (3), une glace (5) dont la zone périphérique (6) recouvre au moins partiellement la carrure, un cercle d'agrandissement (7) disposé entre le mouvement et la carrure et comportant au moins sur sa face supérieure une garniture d'étanchéité (8), au moins deux appuis (10, 11) solidaires de la carrure et formant avec elle une rainure (16) dans laquelle la glace peut être engagée et des moyens (17, 18) de déplacement du cercle d'agrandissement actionnables de l'extérieur de la boite pour compresser ladite garniture contre la face interne de la glace et bloquer ladite glace contre lesdits appuis, caractérisée par le fait que la glace présente au moins dans sa zone périphérique (6) une forme sphérique, l'épaisseur de la glace étant sensiblement constante dans ladite zone et que la face supérieure (19) de la carrure présente la forme d'une portion de sphère dont le rayon est sensiblement égal au rayon que présente la face interne (25) de la glace dans ladite zone périphérique.1. Watch case comprising a back (17), a middle part (1, 30, 31) provided with a housing intended to receive a movement (2) surmounted by a dial (3), a crystal (5), the peripheral zone (6) at least partially covers the middle part, an enlargement circle (7) disposed between the movement and the middle part and comprising at least on its upper face a seal (8), at least two supports (10 , 11) integral with the middle part and forming with it a groove (16) in which the crystal can be engaged and means (17, 18) for movement of the enlargement circle that can be actuated from outside the box to compress said lining against the internal face of the glass and block said glass against said supports, characterized in that the glass has at least in its peripheral zone (6) a spherical shape, the thickness of the glass being substantially constant in said zone and that the upper face (19) of the middle part has the shape of a portion of s sphere whose radius is substantially equal to the radius presented by the internal face (25) of the glass in said peripheral zone. 2. Boîte de montre selon la revendication 1, caractérisée par le fait que le bord de la glace est incliné pour former un biseau (24) qui coopère avec les appuis (23) dont la face interne est taillée en biseau.2. Watch case according to claim 1, characterized in that the edge of the crystal is inclined to form a bevel (24) which cooperates with the supports (23) whose internal face is cut in a bevel. 3. Boîte de montre selon la revendication 1, caractérisée par le fait que les appuis (10, 11) s'étendent sur la face supérieure de la glace au moins jusqu'au droit de la garniture d'étanchéité.3. Watch case according to claim 1, characterized in that the supports (10, 11) extend on the upper face of the crystal at least to the right of the seal. 4. Boite de montre selon la revendication 1, caractérisée par le fait qu'elle est ronde, que la glace a la forme d'une calotte sphérique à pourtour circulaire (26) et que les appuis présentent la forme de griffes (27, 28) de faible largeur.4. Watch case according to claim 1, characterized in that it is round, that the crystal has the shape of a spherical cap with circular periphery (26) and that the supports have the shape of claws (27, 28 ) of small width. 5. Boite de montre selon la revendication 1, caractérisée par le fait qu'elle est de forme, que la glace est une calotte sphérique à pourtour tronqué pour épouser la forme de la boîte et que les appuis (10, 11) sont situés à l'endroit de portions rectilignes présentées par la périphérie de la glace.5. Watch case according to claim 1, characterized in that it is shaped, that the glass is a spherical cap with truncated circumference to match the shape of the box and that the supports (10, 11) are located at the place of rectilinear portions presented by the periphery of the ice. 6. Boite de montre selon la revendication 5, caractérisée par le fait que les appuis (10, 11) s'étendent sur une grande partie des portions rectilignes présentées par la boîte et que la face interne (21) de lappur présente la forme d'une portion de sphère dont le rayer: est sensfplement égal au rayon de la zone périphérique externe de la calotte.6. Watch case according to claim 5, characterized in that the supports (10, 11) extend over a large part of the rectilinear portions presented by the box and that the internal face (21) de lappur has the shape of a portion of a sphere whose scratch: is sensfplement equal to the radius of the outer peripheral zone of the cap. 7. Boîte de montre selon la revendication 1, caractérisée par le fait que la carrure est faite en deux parties juxtaposées (30, 31).7. Watch case according to claim 1, characterized in that the middle part is made in two juxtaposed parts (30, 31). 8. Procédé de montage de la boite de montre telle que définie en revendication 1, caractérisé en ce qu'il comporte la succession des étapes suivantes: - on fait glisser la face interne (25) de la glace (5) sur la face supérieure (19) de la carrure selon un mouvement tournant qui résulte du glissement d'une surface sphérique sur une portion de sphère, - en poursuivant le même mouvement, on fait pénétrer les zones périphériques (6) de la glace dans les rainures (16) formées par les appuis (10, 11) et la carrure (1) jusqu'à ce que le pourtour de la glace coïncide avec le bord de la carrure et - on compresse la garniture d'étanchéité (8) contre la face interne de la glace par actionnement des moyens de déplacement (17, 18) du cercle d'agrandissement (7), bloquant ainsi la glace contre les appuis. 8. A method of mounting the watch case as defined in claim 1, characterized in that it comprises the succession of the following steps: the internal face (25) of the crystal (5) is slid onto the upper face (19) of the middle part in a rotating movement which results from the sliding of a spherical surface over a portion of a sphere, - by continuing the same movement, the peripheral zones (6) of the glass are made to penetrate into the grooves (16) formed by the supports (10, 11) and the middle part (1) until the periphery of the glass coincides with the edge of the middle and - The packing (8) is compressed against the internal face of the crystal by actuation of the displacement means (17, 18) of the enlargement circle (7), thus blocking the crystal against the supports.
EP86104591A 1985-04-09 1986-04-04 Watch case Expired EP0197518B1 (en)

Applications Claiming Priority (2)

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CH1507/85 1985-04-09
CH150785A CH660277GA3 (en) 1985-04-09 1985-04-09

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EP0197518A1 true EP0197518A1 (en) 1986-10-15
EP0197518B1 EP0197518B1 (en) 1989-11-29

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US (1) US4727525A (en)
EP (1) EP0197518B1 (en)
JP (1) JPH0636040B2 (en)
CH (1) CH660277GA3 (en)
DE (1) DE3667212D1 (en)
HK (1) HK55990A (en)
SG (1) SG38990G (en)

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DE19857860A1 (en) * 1998-12-15 2000-06-21 Mannesmann Vdo Ag Pointer instrument
EP1716460A2 (en) * 2004-02-20 2006-11-02 Daniel Lazaretnik Oval shaped timepieces and stem arrangement for watches
CN101488006B (en) * 2008-05-13 2012-07-11 张和国 Four-side arch-shaped glass and preparation method and use thereof
DE102015204619A1 (en) * 2015-03-13 2016-09-15 Levitation AG Method for producing a watch glass with at least one gemstone

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GB814187A (en) * 1956-06-18 1959-06-03 Smith & Sons Ltd S Improvements in indicating instruments
DE1837081U (en) * 1961-07-06 1961-08-31 Johann Jaeckle Metallwarenfabr GLASS LID FOR WATCHES WITH A PLASTIC TIRE.
EP0168010A1 (en) * 1984-07-12 1986-01-15 Montres Rado S.A. Watch case

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Also Published As

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JPH0636040B2 (en) 1994-05-11
DE3667212D1 (en) 1990-01-04
CH660277GA3 (en) 1987-04-15
US4727525A (en) 1988-02-23
SG38990G (en) 1990-09-07
JPS61235788A (en) 1986-10-21
HK55990A (en) 1990-08-03
EP0197518B1 (en) 1989-11-29

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