EP1722283A1 - Watch provided with means to improve crystal resistance against shocks - Google Patents

Watch provided with means to improve crystal resistance against shocks Download PDF

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Publication number
EP1722283A1
EP1722283A1 EP05103932A EP05103932A EP1722283A1 EP 1722283 A1 EP1722283 A1 EP 1722283A1 EP 05103932 A EP05103932 A EP 05103932A EP 05103932 A EP05103932 A EP 05103932A EP 1722283 A1 EP1722283 A1 EP 1722283A1
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EP
European Patent Office
Prior art keywords
bezel
watch
flange
radial
wall
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.)
Withdrawn
Application number
EP05103932A
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German (de)
French (fr)
Inventor
Baptist Wyssbrod
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ETA SA Manufacture Horlogere Suisse
Original Assignee
ETA SA Manufacture Horlogere Suisse
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to EP05103932A priority Critical patent/EP1722283A1/en
Priority to US11/382,596 priority patent/US7384189B2/en
Priority to JP2006132360A priority patent/JP4782609B2/en
Priority to CN200610080206A priority patent/CN100589048C/en
Publication of EP1722283A1 publication Critical patent/EP1722283A1/en
Priority to HK07102560.9A priority patent/HK1095640A1/en
Withdrawn legal-status Critical Current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 invention relates to a watch comprising a case provided with a caseband and a mirror attached to the caseband by means of a peripheral bezel.
  • the invention more particularly relates to a watch comprising a housing which comprises a middle part, an ice, and a display dial, of the type in which the crystal comprises an outer radial flange which bears axially against the middle part and which is retained axially. against the middle part by means of a peripheral bezel fixed to the middle part, the bezel having a lower annular radial surface which abuts axially against the upper face of the collar.
  • Watches are already known in which the ice is attached to the middle part by means of a telescope.
  • the document US 6688492 describes and shows a watch having a flat ice which is fixed on the middle part by driving a bezel in a groove formed in the upper face of the middle part.
  • the bezel has an internal shoulder which bears axially against the upper radial face of a radial flange of the ice to keep it pressed against the middle part.
  • These deformations of the ice can be at the origin of cracks, even of breaks. These cracks may in particular be due to the coming into contact of the central portion of the ice with the upper end of the axis of the display needles of the watch, or the internal stresses in the material constituting the ice.
  • the invention aims in particular to remedy these disadvantages simply and economically.
  • the invention provides a watch of the type described above, characterized in that the flange comprises a convex outer peripheral surface which is generally complementary to a concave inner surface of the bezel arranged vis-à-vis, under the radial bearing surface of the bezel, and which bears radially against said inner surface in the event of axial impact applied to the ice.
  • the watch crystal according to the invention therefore has improved impact resistance.
  • pre-centering means at the level of the flange of the ice to ensure proper positioning of the ice relative to the middle part, before mounting the bezel, otherwise there is a risk deterioration of the ice by the telescope, or an impossibility of assembly.
  • These pre-centering means can be the source of a premature failure of the ice because of the significant deformation caused by an axial impact.
  • the lower radial face of the flange comprises, on the side of the inner peripheral edge of the flange, at least one positioning pin which extends downwards between the dial. and the inner axial wall of the middle part, and the radial distance between the lug and the inner axial wall of the middle part is greater than the radial distance between the external surface of the collar and the internal surface of the bezel so that, in axial impact case, the outer surface of the flange comes into radial support against the inner surface of the bezel before the lug comes into contact with the inner axial wall of the middle part.
  • the outer surface of the collar and the inner surface of the bezel have complementary frustoconical shapes.
  • the middle part comprises an outer peripheral rim having a substantially frustoconical concave inner wall of increasing diameter downwards
  • the bezel comprises a heel ring which is driven axially, from top to bottom, in the middle so that the outer peripheral wall of the heel is radially pressed against the inner wall of the flange, and in that the inner surface of the bezel is constituted by the inner wall heel.
  • This feature allows the middle to support the forces applied to the inner surface of the bezel by the ice.
  • the outer wall of the heel has a frustoconical shape which defines an angle less than the angle defined by the inner surface of the bezel.
  • This feature allows to chase the telescope in the middle without the risk of overloading the ice.
  • FIG 1 there is shown a watch 10 which is made according to the teachings of the invention.
  • the watch 10 comprises a housing 12 which has a middle 14, an ice 16, and a dial 18 display.
  • the housing 12 is also equipped with a peripheral bezel 20 which is force-fitted into the middle part 14 so as to axially retain the window 16 against the middle part 14.
  • the outer surface of the ice 16 here has a globally convex hemispherical shape.
  • the housing 12 here of globally cylindrical shape, contains a watch movement 22 which is arranged under the dial 18 and which controls the means 24 of analog display here constituted by needles 24 rotatably mounted about a central vertical axis A1.
  • a projecting central portion 26 of the analog display means 24 is constituted by the end 26 of the axis of the second wheel, which carries the seconds hand.
  • the projecting portion 26 may be constituted by another element such as a central fixed pin, or the central part of a needle.
  • middle part 14 comprises an outer peripheral rim 28 which defines a substantially frustoconical concave inner wall 30 of decreasing diameter towards the bottom.
  • the telescope 20 comprises a lower annular bead 32 which is driven axially, from top to bottom, in the middle part 14 so that the outer peripheral wall 34 of the bead 32 is radially pressed against the inner wall 30 of the rim 28.
  • the window 16 has an external radial flange 36 which bears axially against its radial lower face 38 against an annular radial surface 40 extending from the middle portion 14. This radial bearing surface 40 is delimited inwards by the wall internal axial 42 of the middle part 14.
  • the telescope 20 has a lower annular radial surface 44 which bears axially against the upper face 46 of the flange 36, which makes it possible to axially clamp the flange 36 between the radial surface 44 of the telescope 20 and the radial bearing surface 40 14 of the middle to ensure the axial retention of the ice 16 against the middle part 14.
  • the radial bearing surface 44 is arranged in a portion of the telescope 20 situated above the heel 32.
  • the radial bearing surface 40 is substantially aligned axially with the radial bearing surface 44 of the telescope 20.
  • the middle part 14 comprises an annular groove 48 which is interposed radially between the radial bearing surface 40 and the outer peripheral rim 28, and which receives an annular sealing seal 50 of the "O-ring” type. ".
  • the seal 50 is compressed between the middle part 14 and the lower radial face 38 of the flange 36.
  • the flange 36 has a convex outer peripheral surface 52 which is generally complementary to a concave internal surface 54 of the bezel 20 arranged facing the lower radial support surface 44 of the telescope 20, which bears radially against said inner surface 54 in the event of an axial impact applied to the window 16.
  • a radial clearance D2 is arranged between the outer surface 52 of the collar 36 and the inner surface 54 of the telescope 20.
  • this radial clearance D2 may be zero, which corresponds to the case of axial shock shown in FIG.
  • the lower radial face 38 of the flange 36 comprises, on the side of the inner peripheral edge 56 of the flange 36, at least one positioning pin 58 which extends downwards.
  • the radial distance D1 between the lug 58 and the inner axial wall 42 of the middle part 14 is greater than the radial distance D2 between the outer surface 52 of the flange 36 and the inner surface 54 of the seat 20.
  • the glass 16 has a plurality of lugs 58 which are distributed angularly in a regular manner.
  • These lugs 58 each have the shape of a generally frustoconical stud and they are designed to cooperate by sliding with the adjacent edge of the middle part 14 and / or with the outer peripheral edge 60 of the dial 18 so as to ensure the pre-centering of the window 16 with respect to the middle part 14 during the mounting of the window 16 on the housing 12, before the mounting of the window 20.
  • the lugs 58 may also allow the angular indexing of the window 16 relative to the dial 18, when they are associated with notches arranged in the outer peripheral edge 60 of the dial 18.
  • the outer surface 52 of the collar 36 and the inner surface 54 of the telescope 20 have complementary frustoconical shapes for a better distribution of the mechanical stresses during an axial impact on the ice 16. These frustoconical surfaces are of diameter growing down.
  • the inner surface 54 of the telescope 20 is constituted by the inner wall of the heel 32.
  • the outer wall 34 of the heel 32 has a frustoconical shape which defines, with respect to the axis A1, an angle less than the angle defined by its inner surface 54 of the heel 32. This characteristic makes it possible not to constrain the ice 16 during the hunting of the telescope 20 in the middle part 14.
  • the middle part 14 here comprises an annular radial surface 62 which is interposed between the annular groove 48 and the inner wall 30 of the flange 28.
  • the heel 32 is provided to abut axial against this radial surface 62 by its lower free end, which also avoids overloading the ice 16 at the end of the hunting.
  • the central part of the window 16 deforms downwards and tends to approach the projecting central portion 26. This deformation causes the collar 36 to slide radially outwards until its outer surface 52 comes into radial abutment against the inner surface 54 of the telescope 20.
  • the radial sliding of the flange 36 stops before the lugs 58 come into contact with the middle part 14, which reduces the risk of rupture of the glass 16.
  • the stopping the radial sliding of the flange 36 limits the axial displacement of the central portion of the lens 16 towards the projecting central portion 26, which also reduces the risk of breaking the lens 16.

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  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Electric Clocks (AREA)

Abstract

The watch has a case (12) including a glass (16) with an outer radial rim (36) axially retained against the middle (14) by a bezel (20) that is fixed on the middle. The bezel has a lower annular radial surface (44) axially supported against an upper side (46) of the rim. The rim has an outer convex peripheral surface (52) in a tapered shape complementary to an inner concave surface (54) of the bezel. The surface (52) is radially supported against the surface (54) in case of axial shocks applied on the glass. The glass has positioning pins (58) cooperating with the adjacent edge of the middle.

Description

L'invention concerne une montre comportant un boîtier muni d'une carrure et d'une glace fixée sur la carrure au moyen d'une lunette périphérique.The invention relates to a watch comprising a case provided with a caseband and a mirror attached to the caseband by means of a peripheral bezel.

L'invention concerne plus particulièrement une montre comprenant un boîtier qui comporte une carrure, une glace, et un cadran d'affichage, du type dans laquelle la glace comporte une collerette radiale externe qui vient en appui axial contre la carrure et qui est retenue axialement contre la carrure au moyen d'une lunette périphérique fixée sur la carrure, la lunette comportant une surface radiale annulaire inférieure qui vient en appui axial contre la face supérieure de la collerette.The invention more particularly relates to a watch comprising a housing which comprises a middle part, an ice, and a display dial, of the type in which the crystal comprises an outer radial flange which bears axially against the middle part and which is retained axially. against the middle part by means of a peripheral bezel fixed to the middle part, the bezel having a lower annular radial surface which abuts axially against the upper face of the collar.

On connaît déjà des montres dans lesquelles la glace est fixée sur la carrure au moyen d'une lunette. Par exemple, le document US-6,688,492 décrit et représente une montre comportant une glace plate qui est fixée sur la carrure par chassage d'une lunette dans une rainure formée dans la face supérieure de la carrure. La lunette comporte un épaulement interne qui vient en appui axial contre la face radiale supérieure d'une collerette radiale de la glace pour la maintenir plaquée contre la carrure.Watches are already known in which the ice is attached to the middle part by means of a telescope. For example, the document US 6688492 describes and shows a watch having a flat ice which is fixed on the middle part by driving a bezel in a groove formed in the upper face of the middle part. The bezel has an internal shoulder which bears axially against the upper radial face of a radial flange of the ice to keep it pressed against the middle part.

Avec ce type de montre, lorsqu'un choc axial est appliqué sur la glace, par exemple lorsqu'elle tombe de la hauteur d'une table, les contraintes s'appliquent principalement axialement grâce à la face extérieure plate de la glace. Les efforts peuvent donc être repris axialement par la carrure au niveau de la surface d'appui axial de la glace sur la carrure. Ainsi, la glace travaille principalement en compression axiale, et elle ne subit pas de flexion.With this type of watch, when an axial shock is applied to the ice, for example when it falls from the height of a table, the constraints apply mainly axially through the flat outer face of the ice. The forces can therefore be resumed axially by the middle at the level of the axial bearing surface of the ice on the middle part. Thus, the ice works mainly in axial compression, and it does not undergo flexion.

Ce n'est pas le cas lorsque la montre est pourvue d'une glace de forme hémisphérique convexe. En effet, le choc axial s'applique alors sur la partie centrale de la glace, ce qui provoque une déformation importante de la glace qui tend à fléchir et à s'affaisser dans sa partie centrale, alors que la collerette de la glace tend à se déplacer vers l'extérieur.This is not the case when the watch is equipped with a convex hemispherical shaped mirror. Indeed, the axial shock then applies to the central part of the ice, which causes a significant deformation of the ice which tends to flex and collapse in its central part, while the collar of the ice tends to move outward.

Ces déformations de la glace peuvent être à l'origine de fissures, voire de ruptures. Ces fissures peuvent notamment être dues à la venue en contact de la partie centrale de la glace avec l'extrémité supérieure de l'axe des aiguilles d'affichage de la montre, ou au contraintes internes dans le matériau constituant la glace.These deformations of the ice can be at the origin of cracks, even of breaks. These cracks may in particular be due to the coming into contact of the central portion of the ice with the upper end of the axis of the display needles of the watch, or the internal stresses in the material constituting the ice.

Dans le document précité, dans le cas où un effort axial localisé dans la partie centrale de la glace provoquerait un déplacement radial de la collerette vers l'extérieur, on constate que la glace viendrait alors en appui contre le tronçon d'extrémité supérieure de la lunette, ce qui appliquerait sur la lunette un effort de torsion néfaste à sa tenue mécanique. De plus, comme la lunette est chassée vers l'intérieur du boîtier par son bord interne, l'effort de torsion s'appliquerait dans le sens du démontage de la lunette, avec un risque important de démontage de la glace.In the aforementioned document, in the case where an axial force located in the central portion of the ice causes a radial displacement of the flange outwards, it is found that the ice would then bear against the upper end section of the ice. bezel, which would apply on the telescope an effort of torsion harmful to its mechanical strength. In addition, as the bezel is driven into the interior of the housing by its inner edge, the torsion force would apply in the direction of disassembly of the bezel, with a significant risk of disassembly of the ice.

L'invention vise notamment à remédier à ces inconvénients de manière simple et économique.The invention aims in particular to remedy these disadvantages simply and economically.

Dans ce but, l'invention propose une montre du type décrit précédemment, caractérisée en ce que la collerette comporte une surface périphérique externe convexe qui est globalement complémentaire d'une surface interne concave de la lunette agencée en vis-à-vis, sous la surface radiale d'appui de la lunette, et qui vient en appui radial contre ladite surface interne en cas de choc axial appliqué sur la glace.For this purpose, the invention provides a watch of the type described above, characterized in that the flange comprises a convex outer peripheral surface which is generally complementary to a concave inner surface of the bezel arranged vis-à-vis, under the radial bearing surface of the bezel, and which bears radially against said inner surface in the event of axial impact applied to the ice.

Grâce à l'agencement selon l'invention, en cas de choc axial, les contraintes de flexion sont diminuées ce qui diminue les risques de fissures. La glace de la montre selon l'invention présente donc une résistance aux chocs améliorée.Thanks to the arrangement according to the invention, in the event of axial impact, the bending stresses are reduced which reduces the risk of cracks. The watch crystal according to the invention therefore has improved impact resistance.

Par ailleurs, il est généralement nécessaire de prévoir des moyens de pré-centrage au niveau de la collerette de la glace pour assurer un positionnement correct de la glace par rapport à la carrure, avant le montage de la lunette, sinon il y a un risque de détérioration de la glace par la lunette, voire une impossibilité de montage. Ces moyens de pré-centrage peuvent être la source d'une rupture prématurée de la glace en raison de la déformation importante provoquée par un choc axial.Furthermore, it is generally necessary to provide pre-centering means at the level of the flange of the ice to ensure proper positioning of the ice relative to the middle part, before mounting the bezel, otherwise there is a risk deterioration of the ice by the telescope, or an impossibility of assembly. These pre-centering means can be the source of a premature failure of the ice because of the significant deformation caused by an axial impact.

Pour résoudre ce problème, selon une caractéristique avantageuse de l'invention, la face radiale inférieure de la collerette comporte, du côté du bord périphérique interne de la collerette, au moins un ergot de positionnement qui s'étend vers le bas, entre le cadran et la paroi axiale interne de la carrure, et la distance radiale entre l'ergot et la paroi axiale interne de la carrure est supérieure à la distance radiale entre la surface externe de la collerette et la surface interne de la lunette de manière que, en cas de choc axial, la surface externe de la collerette vienne en appui radial contre la surface interne de la lunette avant que l'ergot vienne en contact avec la paroi axiale interne de la carrure.To solve this problem, according to an advantageous characteristic of the invention, the lower radial face of the flange comprises, on the side of the inner peripheral edge of the flange, at least one positioning pin which extends downwards between the dial. and the inner axial wall of the middle part, and the radial distance between the lug and the inner axial wall of the middle part is greater than the radial distance between the external surface of the collar and the internal surface of the bezel so that, in axial impact case, the outer surface of the flange comes into radial support against the inner surface of the bezel before the lug comes into contact with the inner axial wall of the middle part.

Selon une autre caractéristique de l'invention, la surface externe de la collerette et la surface interne de la lunette ont des formes tronconiques complémentaires.According to another characteristic of the invention, the outer surface of the collar and the inner surface of the bezel have complementary frustoconical shapes.

Ces formes permettent d'obtenir une résistance aux chocs optimale.These forms make it possible to obtain an optimal impact resistance.

Selon une autre caractéristique de l'invention, la carrure comporte un rebord périphérique externe comportant une paroi interne concave sensiblement tronconique de diamètre croissant vers le bas, en ce que la lunette comporte un talon annulaire qui est chassé axialement, du haut vers le bas, dans la carrure de manière que la paroi périphérique externe du talon soit plaquée radialement contre la paroi interne du rebord, et en ce que la surface interne de la lunette est constituée par la paroi interne du talon.According to another characteristic of the invention, the middle part comprises an outer peripheral rim having a substantially frustoconical concave inner wall of increasing diameter downwards, in that the bezel comprises a heel ring which is driven axially, from top to bottom, in the middle so that the outer peripheral wall of the heel is radially pressed against the inner wall of the flange, and in that the inner surface of the bezel is constituted by the inner wall heel.

Cette caractéristique permet à la carrure de supporter les efforts appliqués sur la surface interne de la lunette par la glace.This feature allows the middle to support the forces applied to the inner surface of the bezel by the ice.

Selon une autre caractéristique de l'invention, la paroi externe du talon a une forme tronconique qui définit un angle inférieur à l'angle définit par la surface interne de la lunette.According to another characteristic of the invention, the outer wall of the heel has a frustoconical shape which defines an angle less than the angle defined by the inner surface of the bezel.

Cette caractéristique permet de chasser la lunette dans la carrure sans risque de surcharger la glace.This feature allows to chase the telescope in the middle without the risk of overloading the ice.

D'autres caractéristiques et avantages de la présente invention apparaîtront plus clairement à la lecture de la description détaillée qui suit, faite en référence aux dessins annexés donnés à titre d'exemple non limitatifs et dans lesquels :

  • la figure 1 est une vue en coupe axiale qui représente schématiquement une montre réalisée conformément aux enseignements de l'invention ;
  • la figure 2 est une vue agrandie d'un détail de la figure 1 représentant schématiquement une portion périphérique de la montre au repos ;
  • la figure 3 est une vue similaire à celle de la figure 2 qui représente la portion périphérique de la montre pendant un choc axial.
Other features and advantages of the present invention will appear more clearly on reading the detailed description which follows, made with reference to the accompanying drawings given by way of non-limiting example and in which:
  • Figure 1 is an axial sectional view which schematically shows a watch made according to the teachings of the invention;
  • Figure 2 is an enlarged view of a detail of Figure 1 schematically showing a peripheral portion of the watch at rest;
  • Figure 3 is a view similar to that of Figure 2 which shows the peripheral portion of the watch during an axial impact.

Sur la figure 1, on a représenté une montre 10 qui est réalisée conformément aux enseignements de l'invention.In Figure 1, there is shown a watch 10 which is made according to the teachings of the invention.

La montre 10 comprend un boîtier 12 qui comporte une carrure 14, une glace 16, et un cadran 18 d'affichage. Le boîtier 12 est aussi équipé d'une lunette 20 périphérique qui est montée à force dans la carrure 14 de manière à retenir axialement la glace 16 contre la carrure 14.The watch 10 comprises a housing 12 which has a middle 14, an ice 16, and a dial 18 display. The housing 12 is also equipped with a peripheral bezel 20 which is force-fitted into the middle part 14 so as to axially retain the window 16 against the middle part 14.

La surface extérieure de la glace 16 a ici une forme globalement hémisphérique convexe.The outer surface of the ice 16 here has a globally convex hemispherical shape.

Le boîtier 12, ici de forme globalement cylindrique, contient un mouvement horloger 22 qui est agencé sous le cadran 18 et qui commande des moyens 24 d'affichage analogique constitués ici par des aiguilles 24 montées à rotation autour d'un axe A1 central vertical.The housing 12, here of globally cylindrical shape, contains a watch movement 22 which is arranged under the dial 18 and which controls the means 24 of analog display here constituted by needles 24 rotatably mounted about a central vertical axis A1.

Dans la suite de la description on utilisera, à titre non limitatif, une orientation verticale suivant l'axe A1 des aiguilles 24 qui correspond ici à l'axe du boîtier 12.In the following description will be used, without limitation, a vertical orientation along the axis A1 needles 24 which corresponds here to the axis of the housing 12.

Selon le mode de réalisation représenté ici, une partie centrale saillante 26 des moyens 24 d'affichage analogique est constituée par l'extrémité 26 de l'axe de la roue de seconde, qui porte l'aiguille des secondes.According to the embodiment shown here, a projecting central portion 26 of the analog display means 24 is constituted by the end 26 of the axis of the second wheel, which carries the seconds hand.

Bien entendu, selon des variantes de réalisation (non représentées), la partie saillante 26 peut être constituée par un autre élément tel qu'un tenon central fixe, ou la partie centrale d'une aiguille.Of course, according to alternative embodiments (not shown), the projecting portion 26 may be constituted by another element such as a central fixed pin, or the central part of a needle.

Comme on l'a représenté, en particulier sur les figures 2 et 3, la carrure 14 comporte un rebord 28 périphérique externe qui définit une paroi interne 30 concave sensiblement tronconique de diamètre croissant vers le bas.As has been shown, in particular in FIGS. 2 and 3, middle part 14 comprises an outer peripheral rim 28 which defines a substantially frustoconical concave inner wall 30 of decreasing diameter towards the bottom.

La lunette 20 comporte un talon 32 annulaire inférieur qui est chassé axialement, du haut vers le bas, dans la carrure 14 de manière que la paroi périphérique externe 34 du talon 32 soit plaquée radialement contre la paroi interne 30 du rebord 28.The telescope 20 comprises a lower annular bead 32 which is driven axially, from top to bottom, in the middle part 14 so that the outer peripheral wall 34 of the bead 32 is radially pressed against the inner wall 30 of the rim 28.

La glace 16 comporte une collerette 36 radiale externe qui vient en appui axial, par sa face radiale inférieure 38, contre une surface radiale 40 annulaire de portée de la carrure 14. Cette surface radiale de portée 40 est délimitée vers l'intérieur par la paroi axiale interne 42 de la carrure 14.The window 16 has an external radial flange 36 which bears axially against its radial lower face 38 against an annular radial surface 40 extending from the middle portion 14. This radial bearing surface 40 is delimited inwards by the wall internal axial 42 of the middle part 14.

La lunette 20 comporte une surface radiale 44 annulaire inférieure qui vient en appui axial contre la face supérieure 46 de la collerette 36, ce qui permet de serrer axialement la collerette 36 entre la surface radiale 44 de la lunette 20 et la surface radiale de portée 40 de la carrure 14 pour assurer la retenue axiale de la glace 16 contre la carrure 14.The telescope 20 has a lower annular radial surface 44 which bears axially against the upper face 46 of the flange 36, which makes it possible to axially clamp the flange 36 between the radial surface 44 of the telescope 20 and the radial bearing surface 40 14 of the middle to ensure the axial retention of the ice 16 against the middle part 14.

La surface radiale 44 d'appui est agencée dans un tronçon de la lunette 20 situé au-dessus du talon 32.The radial bearing surface 44 is arranged in a portion of the telescope 20 situated above the heel 32.

De préférence, la surface radiale de portée 40 est sensiblement alignée axialement avec la surface radiale 44 d'appui de la lunette 20.Preferably, the radial bearing surface 40 is substantially aligned axially with the radial bearing surface 44 of the telescope 20.

Selon le mode de réalisation représenté ici, la carrure 14 comporte une gorge annulaire 48 qui est intercalée radialement entre la surface radiale de portée 40 et le rebord 28 périphérique externe, et qui reçoit un joint 50 d'étanchéité annulaire du type « O-ring ». Le joint 50 est comprimé entre la carrure 14 et la face radiale inférieure 38 de la collerette 36.According to the embodiment shown here, the middle part 14 comprises an annular groove 48 which is interposed radially between the radial bearing surface 40 and the outer peripheral rim 28, and which receives an annular sealing seal 50 of the "O-ring" type. ". The seal 50 is compressed between the middle part 14 and the lower radial face 38 of the flange 36.

Conformément aux enseignements de l'invention, la collerette 36 comporte une surface périphérique externe 52 convexe qui est globalement complémentaire d'une surface interne 54 concave de la lunette 20 agencée en vis-à-vis, sous la surface radiale inférieure 44 d'appui de la lunette 20, et qui vient en appui radial contre ladite surface interne 54 en cas de choc axial appliqué sur la glace 16.In accordance with the teachings of the invention, the flange 36 has a convex outer peripheral surface 52 which is generally complementary to a concave internal surface 54 of the bezel 20 arranged facing the lower radial support surface 44 of the telescope 20, which bears radially against said inner surface 54 in the event of an axial impact applied to the window 16.

Au repos, tel que représenté sur la figure 2, un jeu radial D2 est aménagé entre la surface externe 52 de la collerette 36 et la surface interne 54 de la lunette 20.At rest, as represented in FIG. 2, a radial clearance D2 is arranged between the outer surface 52 of the collar 36 and the inner surface 54 of the telescope 20.

Selon une variante de réalisation, ce jeu radial D2 peut être nul, ce qui correspond au cas de choc axial représenté sur la figure 3.According to an alternative embodiment, this radial clearance D2 may be zero, which corresponds to the case of axial shock shown in FIG.

Avantageusement, la face radiale inférieure 38 de la collerette 36 comporte, du côté du bord périphérique interne 56 de la collerette 36, au moins un ergot 58 de positionnement qui s'étend vers le bas. De plus, la distance radiale D1 entre l'ergot 58 et la paroi axiale interne 42 de la carrure 14 est supérieure à la distance radiale D2 entre la surface externe 52 de la collerette 36 et la surface interne 54 de la lunette 20.Advantageously, the lower radial face 38 of the flange 36 comprises, on the side of the inner peripheral edge 56 of the flange 36, at least one positioning pin 58 which extends downwards. In addition, the radial distance D1 between the lug 58 and the inner axial wall 42 of the middle part 14 is greater than the radial distance D2 between the outer surface 52 of the flange 36 and the inner surface 54 of the seat 20.

De préférence, la glace 16 comporte plusieurs ergots 58 qui sont répartis angulairement de manière régulière. Ces ergots 58 ont chacun la forme d'un téton globalement tronconique et ils sont prévus pour coopérer par glissement avec le bord adjacent de la carrure 14 et/ou avec le bord périphérique externe 60 du cadran 18 de manière à assurer le pré-centrage de la glace 16 par rapport à la carrure 14 lors du montage de la glace 16 sur le boîtier 12, avant le montage de la lunette 20.Preferably, the glass 16 has a plurality of lugs 58 which are distributed angularly in a regular manner. These lugs 58 each have the shape of a generally frustoconical stud and they are designed to cooperate by sliding with the adjacent edge of the middle part 14 and / or with the outer peripheral edge 60 of the dial 18 so as to ensure the pre-centering of the window 16 with respect to the middle part 14 during the mounting of the window 16 on the housing 12, before the mounting of the window 20.

On note que les ergots 58 peuvent aussi permettre l'indexation angulaire de la glace 16 par rapport au cadran 18, lorsqu'ils sont associés à des encoches aménagées dans le bord périphérique externe 60 du cadran 18.Note that the lugs 58 may also allow the angular indexing of the window 16 relative to the dial 18, when they are associated with notches arranged in the outer peripheral edge 60 of the dial 18.

De préférence aussi, la surface externe 52 de la collerette 36 et la surface interne 54 de la lunette 20 ont des formes tronconiques complémentaires pour une meilleure répartition des contraintes mécaniques lors d'un choc axial sur la glace 16. Ces surfaces tronconiques sont de diamètre croissant vers le bas.Also preferably, the outer surface 52 of the collar 36 and the inner surface 54 of the telescope 20 have complementary frustoconical shapes for a better distribution of the mechanical stresses during an axial impact on the ice 16. These frustoconical surfaces are of diameter growing down.

La surface interne 54 de la lunette 20 est constituée par la paroi interne du talon 32.The inner surface 54 of the telescope 20 is constituted by the inner wall of the heel 32.

Avantageusement, la paroi externe 34 du talon 32 a une forme tronconique qui définit, par rapport à l'axe A1, un angle inférieur à l'angle définit par sa surface interne 54 du talon 32. Cette caractéristique permet de ne pas contraindre la glace 16 lors du chassage de la lunette 20 dans la carrure 14.Advantageously, the outer wall 34 of the heel 32 has a frustoconical shape which defines, with respect to the axis A1, an angle less than the angle defined by its inner surface 54 of the heel 32. This characteristic makes it possible not to constrain the ice 16 during the hunting of the telescope 20 in the middle part 14.

La carrure 14 comporte ici une surface radiale annulaire 62 qui est intercalée entre la gorge annulaire 48 et la paroi interne 30 du rebord 28. A la fin du chassage de la lunette 20 dans la carrure 14, le talon 32 est prévu pour venir en butée axiale contre cette surface radiale 62 par son extrémité libre inférieure, ce qui évite aussi de surcharger la glace 16 à la fin du chassage.The middle part 14 here comprises an annular radial surface 62 which is interposed between the annular groove 48 and the inner wall 30 of the flange 28. At the end of the driving of the bezel 20 in the middle part 14, the heel 32 is provided to abut axial against this radial surface 62 by its lower free end, which also avoids overloading the ice 16 at the end of the hunting.

Selon le mode de réalisation représenté ici, les ergots 58 sont légèrement décalés radialement vers l'extérieur, par rapport au bord périphérique interne 56 de la collerette 36, ce qui délimite, dans la face radiale inférieure 38 de la collerette 36, une portion annulaire interne 64 qui vient en appui axial contre la surface supérieure 66 du cadran 18.According to the embodiment shown here, the lugs 58 are slightly offset radially outwards, relative to the inner peripheral edge 56 of the flange 36, which defines, in the lower radial face 38 of the flange 36, an annular portion internal 64 which bears axially against the upper surface 66 of the dial 18.

On explique maintenant le comportement de la montre 10 lorsqu'un choc axial est appliqué sur la glace 16.The behavior of the watch 10 is now explained when an axial impact is applied to the ice 16.

Sur les figures 1 et 2, la montre 10 est à l'état de repos et la glace 16 n'est pas déformée.In Figures 1 and 2, the watch 10 is in the state of rest and the ice 16 is not deformed.

Sur la figure 3, un choc axial est appliqué du haut vers le bas sur la glace 16.In FIG. 3, an axial impact is applied from top to bottom on the window 16.

La partie centrale de la glace 16 se déforme vers le bas et tend à se rapprocher de la partie centrale saillante 26. Cette déformation provoque un glissement radial de la collerette 36 vers l'extérieur, jusqu'à ce que sa surface externe 52 vienne en butée radiale contre la surface interne 54 de la lunette 20.The central part of the window 16 deforms downwards and tends to approach the projecting central portion 26. This deformation causes the collar 36 to slide radially outwards until its outer surface 52 comes into radial abutment against the inner surface 54 of the telescope 20.

A ce stade, les contraintes mécaniques dues au choc se répartissent dans le matériau de la glace 16 en fonction des zones d'appui.At this stage, the mechanical stresses due to impact are distributed in the material of the ice 16 as a function of the bearing zones.

Avantageusement, les tensions internes dans la glace 16 sont minimisées grâce à la reprise de ces tensions par la lunette 20, au niveau de l'appui radial de la glace 16 contre la lunette 20, ce qui permet de rigidifier les appuis de la glace 16 sur la carrure 14 pour limiter le fléchissement de la glace 16 dans sa partie centrale.Advantageously, the internal tensions in the window 16 are minimized by the resumption of these tensions by the window 20, at the radial support of the window 16 against the window 20, which makes it possible to stiffen the supports of the window 16 on the middle 14 to limit the deflection of the ice 16 in its central part.

Grâce à l'agencement selon l'invention, le glissement radial de la collerette 36 s'arrête avant que les ergots 58 viennent en contact avec la carrure 14, ce qui diminue les risques de rupture de la glace 16. De plus, l'arrêt du glissement radial de la collerette 36 limite le déplacement axial de la partie centrale de la glace 16 vers la partie centrale saillante 26, ce qui diminue aussi les risques de rupture de la glace 16.Thanks to the arrangement according to the invention, the radial sliding of the flange 36 stops before the lugs 58 come into contact with the middle part 14, which reduces the risk of rupture of the glass 16. In addition, the stopping the radial sliding of the flange 36 limits the axial displacement of the central portion of the lens 16 towards the projecting central portion 26, which also reduces the risk of breaking the lens 16.

Claims (10)

Montre (10) comprenant un boîtier (12) qui comporte une carrure (14), une glace (16), et un cadran (18) d'affichage, du type dans laquelle la glace (16) comporte une collerette (36) radiale externe qui vient en appui axial contre la carrure (14) et qui est retenue axialement contre la carrure (14) au moyen d'une lunette (20) périphérique fixée sur la carrure (14), la lunette (20) comportant une surface radiale annulaire inférieure (44) qui vient en appui axial contre la face supérieure (46) de la collerette (36),
caractérisée en ce que la collerette (36) comporte une surface périphérique externe (52) convexe qui est globalement complémentaire d'une surface interne (54) concave de la lunette (20) agencée en vis-à-vis, sous la surface radiale (44) d'appui de la lunette (20), et qui vient en appui radial contre ladite surface interne (54) en cas de choc axial appliqué sur la glace (16).Watch (10) comprising a housing (12) having a middle (14), an ice (16), and a display dial (18) of the type in which the window (16) has a radial collar (36) external which bears axially against the middle part (14) and which is retained axially against the middle part (14) by means of a peripheral bezel (20) fixed on the middle part (14), the bezel (20) having a radial surface lower annular ring (44) which bears axially against the upper face (46) of the flange (36),
characterized in that the flange (36) has a convex outer peripheral surface (52) which is generally complementary to a concave inner surface (54) of the bezel (20) arranged opposite one another under the radial surface ( 44) for supporting the telescope (20), and which bears radially against said inner surface (54) in the event of an axial impact applied to the window (16). Montre selon la revendication précédente, caractérisée en ce que la face radiale inférieure (38) de la collerette (36) comporte, du côté du bord périphérique interne (56) de la collerette (36), au moins un ergot (58) de positionnement qui s'étend vers le bas, entre le cadran (18) et la paroi axiale interne (42) de la carrure (14), et en ce que la distance radiale (D1) entre l'ergot (58) et la paroi axiale interne (42) de la carrure (14) est supérieure à la distance radiale (D2) entre la surface externe (52) de la collerette (36) et la surface interne (54) de la lunette (20) de manière que, en cas de choc axial, la surface externe (52) de la collerette (36) vienne en appui radial contre la surface interne (54) de la lunette (20) avant que l'ergot (58) vienne en contact avec la paroi axiale interne (42) de la carrure (14).Watch according to the preceding claim, characterized in that the lower radial face (38) of the flange (36) comprises, on the side of the inner peripheral edge (56) of the flange (36), at least one locating pin (58). which extends downwards between the dial (18) and the inner axial wall (42) of the middle part (14), and in that the radial distance (D1) between the lug (58) and the axial wall internal portion (42) of the middle part (14) is greater than the radial distance (D2) between the outer surface (52) of the flange (36) and the inner surface (54) of the bezel (20) so that, in in the case of axial impact, the outer surface (52) of the flange (36) bears radially against the inner surface (54) of the bezel (20) before the lug (58) comes into contact with the inner axial wall (42) of the middle part (14). Montre (10) selon l'une quelconque des revendications précédentes, caractérisée en ce que la surface externe (52) de la collerette (36) et la surface interne (54) de la lunette (20) ont des formes tronconiques complémentaires.Watch (10) according to any one of the preceding claims, characterized in that the outer surface (52) of the flange (36) and the inner surface (54) of the bezel (20) have complementary frustoconical shapes. Montre (10) selon l'une quelconque des revendications précédentes, caractérisée en ce que la carrure (14) comporte un rebord (28) périphérique externe comportant une paroi interne (30) concave sensiblement tronconique de diamètre croissant vers le bas, en ce que la lunette (20) comporte un talon (32) annulaire qui est chassé axialement, du haut vers le bas, dans la carrure (14) de manière que la paroi périphérique externe (34) du talon (32) soit plaquée radialement contre la paroi interne (30) du rebord (28), et en ce que la surface interne (54) de la lunette (20) est constituée par la paroi interne du talon (32).Watch (10) according to any one of the preceding claims, characterized in that the middle part (14) comprises an outer peripheral rim (28) comprising a substantially frustoconical concave inner wall (30) of diameter increasing towards the bottom, in that the bezel (20) has an annular bead (32) which is axially displaced from top to bottom in the middle part (14) so that the outer peripheral wall (34) of the bead (32) is radially pressed against the wall internal (30) of the flange (28), and in that the inner surface (54) of the bezel (20) is constituted by the inner wall of the heel (32). Montre (10) selon les revendications 3 et 4, caractérisée en ce que la paroi externe (34) du talon (32) a une forme tronconique qui définit un angle inférieur à l'angle définit par la surface interne (54) de la lunette (20).Watch (10) according to claims 3 and 4, characterized in that the outer wall (34) of the heel (32) has a frustoconical shape which defines an angle less than the angle defined by the inner surface (54) of the bezel (20). Montre (10) selon la revendication 4 ou 5, caractérisée en ce que l'extrémité inférieure libre du talon (32) vient en appui axial contre une surface de portée (62) associée aménagée dans la carrure (14).Watch (10) according to claim 4 or 5, characterized in that the free lower end of the heel (32) bears axially against an associated bearing surface (62) arranged in the middle part (14). Montre (10) selon l'une quelconque des revendications précédentes, caractérisée en ce que la carrure (14) comporte une surface radiale annulaire de portée (40) qui est sensiblement alignée axialement avec la surface radiale d'appui (44) de la lunette (20), de manière que la collerette (36) soit maintenue serrée axialement entre ces deux surfaces (40, 44), et en ce que la surface radiale de portée (40) est délimitée vers l'intérieur par la paroi axiale interne (42) de la carrure (14).Watch (10) according to any one of the preceding claims, characterized in that the middle part (14) comprises an annular radial bearing surface (40) which is substantially axially aligned with the radial bearing surface (44) of the bezel (20), so that the flange (36) is held axially tight between these two surfaces (40, 44), and in that the radial bearing surface (40) is delimited inwards by the internal axial wall ( 42) of the middle part (14). Montre (10) selon la revendication précédente, caractérisée en ce que la carrure (14) comporte une gorge annulaire (48) qui est intercalée entre la surface radiale de portée (40) et le rebord (28) périphérique externe, et qui reçoit un joint d'étanchéité (50) comprimé entre la carrure (14) et la collerette (36).Watch (10) according to the preceding claim, characterized in that the middle (14) has an annular groove (48) which is interposed between the radial bearing surface (40) and the outer peripheral rim (28), and which receives a seal (50) compressed between the middle part (14) and the flange (36). Montre (10) selon l'une quelconque des revendications précédentes, caractérisée en ce que la surface extérieure de la glace (16) a globalement une forme hémisphérique convexe.Watch (10) according to any one of the preceding claims, characterized in that the outer surface of the window (16) has a generally convex hemispherical shape. Montre (10) selon l'une quelconque des revendications précédentes, caractérisée en ce que le boîtier (12) contient un mouvement horloger (22) muni de moyens (24) d'affichage analogique.Watch (10) according to any one of the preceding claims, characterized in that the housing (12) contains a watch movement (22) provided with means (24) for analogue display.
EP05103932A 2005-05-11 2005-05-11 Watch provided with means to improve crystal resistance against shocks Withdrawn EP1722283A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP05103932A EP1722283A1 (en) 2005-05-11 2005-05-11 Watch provided with means to improve crystal resistance against shocks
US11/382,596 US7384189B2 (en) 2005-05-11 2006-05-10 Watch including means for improving the shock resistance of the crystal
JP2006132360A JP4782609B2 (en) 2005-05-11 2006-05-11 Watch including means to improve the impact resistance of the crystal
CN200610080206A CN100589048C (en) 2005-05-11 2006-05-11 Watch provided with means to improve crystal resistance against shocks
HK07102560.9A HK1095640A1 (en) 2005-05-11 2007-03-08 Watch including means for improving the shock resistance of the crystal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05103932A EP1722283A1 (en) 2005-05-11 2005-05-11 Watch provided with means to improve crystal resistance against shocks

Publications (1)

Publication Number Publication Date
EP1722283A1 true EP1722283A1 (en) 2006-11-15

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ID=36061505

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Application Number Title Priority Date Filing Date
EP05103932A Withdrawn EP1722283A1 (en) 2005-05-11 2005-05-11 Watch provided with means to improve crystal resistance against shocks

Country Status (5)

Country Link
US (1) US7384189B2 (en)
EP (1) EP1722283A1 (en)
JP (1) JP4782609B2 (en)
CN (1) CN100589048C (en)
HK (1) HK1095640A1 (en)

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Publication number Priority date Publication date Assignee Title
EP2261757A1 (en) * 2009-06-10 2010-12-15 ETA SA Manufacture Horlogère Suisse Method and device for attaching a glass to a bezel

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2360537B1 (en) * 2010-02-15 2014-04-09 ETA SA Manufacture Horlogère Suisse Method and device for fixing a crystal with counter-blade
EP2485100A1 (en) * 2011-02-08 2012-08-08 ETA SA Manufacture Horlogère Suisse Watch including a bezel and method for attaching such a bezel
JP5824969B2 (en) * 2011-08-29 2015-12-02 セイコーエプソン株式会社 Cover glass and watch
FI126264B (en) 2013-09-10 2016-09-15 Suunto Oy Underwater electronic display

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FR1486064A (en) * 1966-07-06 1967-06-23 Waterproof watch
US4257118A (en) * 1978-01-24 1981-03-17 Citizen Watch Co., Ltd. Watch case
EP1089143A1 (en) * 1999-09-28 2001-04-04 Eta SA Fabriques d'Ebauches Timepiece with a movement mounted in a casing-ring

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NL202713A (en) 1955-12-09
JPS505590B1 (en) * 1970-03-10 1975-03-05
JPS5370248A (en) * 1976-12-02 1978-06-22 Mitsubishi Heavy Ind Ltd Closed circuit system forced lubrication device for nill spindle
SG96198A1 (en) * 2000-02-24 2003-05-23 Asulab Sa Portable object such as, in particular, a timepiece, including a piezoelectric transducer for entering data manually

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Publication number Priority date Publication date Assignee Title
FR1486064A (en) * 1966-07-06 1967-06-23 Waterproof watch
US4257118A (en) * 1978-01-24 1981-03-17 Citizen Watch Co., Ltd. Watch case
EP1089143A1 (en) * 1999-09-28 2001-04-04 Eta SA Fabriques d'Ebauches Timepiece with a movement mounted in a casing-ring

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2261757A1 (en) * 2009-06-10 2010-12-15 ETA SA Manufacture Horlogère Suisse Method and device for attaching a glass to a bezel
US8764283B2 (en) 2009-06-10 2014-07-01 Eta Sa Manufacture Horlogère Suisse Process and device for fastening a glass to a bezel

Also Published As

Publication number Publication date
HK1095640A1 (en) 2007-05-11
CN100589048C (en) 2010-02-10
JP2006317447A (en) 2006-11-24
US20060256667A1 (en) 2006-11-16
CN1862419A (en) 2006-11-15
US7384189B2 (en) 2008-06-10
JP4782609B2 (en) 2011-09-28

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