EP3736641A1 - Stem-crown of a sealed watch case, and watch case including same - Google Patents
Stem-crown of a sealed watch case, and watch case including same Download PDFInfo
- Publication number
- EP3736641A1 EP3736641A1 EP19173327.8A EP19173327A EP3736641A1 EP 3736641 A1 EP3736641 A1 EP 3736641A1 EP 19173327 A EP19173327 A EP 19173327A EP 3736641 A1 EP3736641 A1 EP 3736641A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- crown
- watch case
- stem
- annular
- control member
- 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.)
- Pending
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Classifications
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- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B3/00—Normal winding of clockworks by hand or mechanically; Winding up several mainsprings or driving weights simultaneously
- G04B3/04—Rigidly-mounted keys, knobs or crowns
- G04B3/041—Construction of crowns for rotating movement; connection with the winding stem; winding stems
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- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B37/00—Cases
- G04B37/08—Hermetic sealing of openings, joints, passages or slits
- G04B37/084—Complete encasings for wrist or pocket watches without means for hermetic sealing of winding stem or crown
- G04B37/085—Complete encasings for wrist or pocket watches without means for hermetic sealing of winding stem or crown without special hermetic sealing pieces
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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
- G04B1/00—Driving mechanisms
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- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B37/00—Cases
- G04B37/08—Hermetic sealing of openings, joints, passages or slits
- G04B37/10—Hermetic sealing of openings, joints, passages or slits of winding stems
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- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B37/00—Cases
- G04B37/08—Hermetic sealing of openings, joints, passages or slits
- G04B37/10—Hermetic sealing of openings, joints, passages or slits of winding stems
- G04B37/103—Hermetic sealing of openings, joints, passages or slits of winding stems by screwing the crown onto the case
Definitions
- the present invention relates to a control member, such as a stem-crown of a waterproof watch case, in particular for a diving watch.
- the invention also relates to a watch case comprising a control member, such as a stem-crown for adjusting time parameters or other functions for a diving watch.
- a control member such as a stem-crown for adjusting time parameters or other functions for a diving watch.
- the watch case which comprises a watch movement or a time-based watch module, must be closed in a well-sealed manner.
- the watch case comprises a case back fixed in a sealed manner to a first side of a middle part and a crystal fixed to a second opposite side of the middle part. Sealing gaskets are provided for the assembly of the back, the caseband and the watch crystal.
- a member for controlling or adjusting the functions of the watch is also mounted in a sealed manner through the middle part of the case in the rest position.
- watch cases with the control or adjustment member are not configured or assembled to withstand high water pressures for example during a dive since the pressure inside the watch case is close atmospheric pressure.
- Simple gaskets of traditional watches are not sufficient to guarantee a good watertightness of the case when diving to very great depths underwater.
- the watch case consists of a crystal fixed on an upper side to a caseband-bezel and a caseback fixed to the caseband by screwing it to an internal thread of the caseband.
- the crystal is fixed to the middle part by an annular seal in the shape of a toric and rests on a middle edge.
- a seal is also provided between an outer edge of the back and a lower surface of the caseband.
- a strong metal cup is still provided to bear against an interior surface of the back and against an interior edge of the caseband.
- this does not make it possible to guarantee good sealing of the case during diving to very great depths underwater, which constitutes a drawback.
- the patent CH 372 606 describes a waterproof watch case, which has a central part or middle part surrounding a back and closed by a crystal. A threaded ring bears against an inclined outer surface of the caseback to retain it, and is screwed to a fastening portion connected to the caseband. With such an arrangement presented, this does not make it possible to guarantee good sealing of the box during diving to very great depths underwater, which constitutes a drawback.
- the patent application EP 3 432 084 A1 describes a control member, such as a stem-crown, mounted through the middle part of a watch case.
- the stem-crown comprises a threaded part to be screwed to an internal thread of a through opening of the middle part.
- An upper part of the rod with a diameter greater than its threaded part bears in the rest position against a wedge in the bottom of a housing for receiving the upper part of the rod.
- a seal in O-ring form is disposed in an annular groove in the upper part of the rod and in contact with the interior wall of the housing to ensure a watertight seal.
- such an arrangement presented does not guarantee good sealing of the box with its control member when diving to very great depths underwater, which is a drawback.
- the main object of the invention is therefore to overcome the drawbacks of the state of the art described above by proposing on the one hand a control member, such as a stem-crown of a waterproof watch case. 'water, and on the other hand a waterproof watch case adapted to withstand high water pressure for diving to great depths underwater.
- the present invention relates to a control member, such as a stem-crown of a waterproof watch case, which comprises the features of independent claim 1.
- An advantage of the control member of a waterproof watch case lies in the fact that it is in the form of a stem-crown, the crown of which comprises a first portion and a second handling portion. .
- the first portion has an annular contact surface, which is inclined at a defined angle smaller than 90 ° with respect to a longitudinal central axis of the stem-crown to be able to come into contact with an annular receiving surface of the middle part. , which is of complementary form.
- the present invention also relates to a watertight watch case with at least one control member, such as a stem-crown, which includes the features of independent claim 8.
- Embodiments of the waterproof watch case are defined in dependent claims 9 to 13.
- the crown has an annular contact surface, which is inclined at a defined angle smaller than 90 ° relative to a longitudinal central axis of the stem-crown to come into contact with an annular receiving surface of the middle part. , which is of complementary shape in a rest position.
- the figure 1 shows a watch case 1, which can be used for a diving watch.
- the watch case 1 essentially comprises a crystal 3, which can be made of sapphire or mineral glass, fixed on an upper side of a caseband 2, possibly a back 4 mounted on a lower side of the caseband 2, and at least one control member 9, such as a stem-crown as shown.
- the control member 9 can be mounted in a sealed manner in the rest position on or through the middle part 2 or in the adjustment position as explained in more detail below with reference to figures 2a and 2b .
- This control member 9 can be used to adjust the time, date or other functions for a diving watch.
- a bezel 7 can also be mounted on the upper side of the middle part 2.
- a movement or watch module 10 is placed in the watch case 1 in a casing circle 8.
- the control member 9 is in the form of a stem-crown 9. It mainly comprises a stem 11 and a crown 13 capable of being manipulated by a hand of a user outside the watch case 1. In position of rest as shown in figure 1 , the rod 11 passes through a tubular opening 12 of the middle part 2. This rod 11 is extended by another internal rod to have access to the inside of the watch case 1 for the adjustment of time parameters or other functions of a diving watch.
- the rod 11 can be maintained by a holding means 23 in the tubular opening 12 of the middle part 2 or at its mouth in the watch case, in particular in the rest position without adjustment.
- the rod 11 comprises at one end towards the inside of the watch case 1, a threaded portion 11 'to be screwed to an internal thread 23, as a holding means, in the tubular opening 12 of the caseband 2.
- the rod 11 further comprises an annular groove 18 with a seal 17 in toroidal form. contact with the inner surface of the tubular opening 12 of diameter slightly larger than the diameter of the rod 11.
- the annular groove 18 is disposed between the threaded portion 11 'and the ring 13, and preferably closer to the threaded portion 11 ', so that in the adjustment position, the seal 17 remains in contact in the tubular opening 12.
- the crown 13 comprises a first portion directly connecting the rod 11 and a second handling portion.
- the first portion comprises an annular contact surface 21, which is inclined at a defined angle smaller than 90 ° with respect to a longitudinal central axis of the stem-crown 9 starting from the connection of the stem 11 to the first portion of the crown 13 towards the outside of the second portion of the crown 13 or of the watch case 1.
- the first portion of the crown also comprises a second annular groove 29 accommodating a second sealing gasket 19 of toric shape (Butadiene Rubber Nitrile), and which is located close to the connection between the first portion and the second handling portion of the crown 13.
- the second annular groove 29 may have a rectangular cross section for maintaining the second seal 19 in the ring. groove in the stem-crown adjustment position 9.
- the annular contact surface 21 of the first portion of the crown 13 is inclined at an angle defined to come into contact with an annular receiving surface 22 of the middle 2 in the rest position.
- This annular receiving surface 22 is of complementary shape to the annular contact surface 21 and normally with the same angle of inclination as the annular contact surface 21.
- the angle of inclination ⁇ of the surfaces 21, 22 can be of the order of 55 ° ⁇ 10 °, but preferably at 55 ° , or even at 65 °.
- first portion and the second portion of the crown 13 form a single solid part, for example in a material, such as titanium, such as also for example the middle part 2.
- the rod 11 can also come from the material directly with the crown to form a single piece.
- the base 4 comprises an annular edge 14 with internal thread to be screwed onto a thread 15 on the lower side of the middle part 2.
- An annular bearing surface of the bottom 4 comes into contact with an annular inner surface of the middle part 2 of shape complementary to the bearing surface when mounting the back 4 on the caseband 2.
- the bearing and inner surfaces are inclined at a determined angle with respect to an axis perpendicular to a watch case plane 1.
- the bearing and inner surfaces are of conical shape and inclined towards the inside of the watch case 1 at a determined angle with respect to a central axis of the watch case 1
- the lower side of the caseband 2 further comprises an annular groove 16 accommodating a sealing gasket 6 (Butadiene Rubber Nitrile) in toroidal form in contact with the bearing surface during the mounting of the caseback 4 on the caseband 2.
- a sealing gasket 6 butadiene Rubber Nitrile
- the angle may be of the order of 60 ° ⁇ 5 ° with respect to the central axis. This makes it possible to have a good distribution of the stresses between the bottom 4 and the middle 2 due to the pressure of the water during diving at great depths underwater.
- the crystal 3 is fixed to the middle part 2 according to the same principle as the mounting of the back 4 to the middle part 2.
- the crystal 3 comprises an annular peripheral surface to be fixed by means of a fixing gasket 5. on an annular inner surface of the upper side of the middle part 2.
- the annular inner surface is of complementary shape to the annular peripheral surface.
- the annular peripheral surface 13 of the glass 3 is inclined at a defined angle smaller than 90 ° with respect to an axis perpendicular to a watch case plane 1.
- the annular inner surface is inclined generally towards the inside of the watch case 1 at the same angle as the annular peripheral surface with respect to a central axis.
- the middle 2 is generally cylindrical in shape, the annular inner surface and the annular peripheral surface are conical in shape.
- the defined angle of inclination of the surfaces may be of the order of 43 ° ⁇ 5 ° with respect to the central axis. This makes it possible to have a good distribution of the stresses between the crystal 3 and the caseband 2 due to the pressure of the water during diving at great depths underwater.
- the difference in water pressure relative to the pressure inside the watch case 1 tends to close any gap between the surfaces in contact with the fixing gasket 5 thanks to the inclination of the contact surfaces towards the inside of the watch case 1. This guarantees a good seal and resistance to high pressures.
- the presented fixing joint 5 can be made of an amorphous metal or an amorphous metal alloy.
- the fixing gasket 5 is of annular shape for the hermetic closing of the crystal 3 on the middle part 2.
- the fastening gasket 5 comprises a conically shaped part surmounted by a cylindrical part attached to it. an annular inner wall of the middle part 2 and an annular outer wall of the crystal 3.
- the crystal 3 is fixed to the middle part 2 by means of the amorphous metal gasket following a hot fixing operation.
- the amorphous metal alloy can be mainly composed of zirconium, which makes it possible to form the seal at a temperature above 350 ° C, that is to say above the glass transition temperature of the alloy.
- the amorphous zirconium metal alloy can be composed of Zr (52.5%), Cu (17.6%), Ni (14.9%), Al (10%) and Ti (5%).
- the amorphous metal alloy based on zirconium may also include Zr (58.5%), Cu (15.6%), Ni (12.8%), Al (10.3%) and Nb (2.8%).
- the amorphous metal alloy based on zirconium can also include Zr (44%), Ti (11%), Cu (9.8%), Ni (10.2%) and Be (25%), or finally Zr (58%), Cu (22%), Fe (8%) and Al (12%).
- the amorphous metal alloy can be mainly composed of platinum (Pt), which makes it possible to form the seal at a temperature above 230 ° C.
- the platinum-based amorphous metal alloy can include Pt (57.5%), Cu (14.7%), Ni (5.3%) and P (22.5%). Provision can also be made to produce the one-piece metal seal 5, 5 'from an amorphous metal alloy based mainly on palladium (Pd, which makes it possible to form the seal at a temperature above 300 ° C.
- a titanium-based amorphous metal alloy can include Ti (41.5%), Zr (10%), Cu (35%), Pd (11%) and Sn (2.5%).
- An amorphous metal alloy based on palladium can include Pd (43%), Cu (27%), Ni (10%) and P (20%), or Pd (77%), Cu (6%) and Si (16.5 %), or finally Pd (79%), Cu (6%), Si (10%) and P (5%).
- An amorphous nickel-based metal alloy can include Ni (53%), Nb (20%), Ti (10%), Zr (8%), Co (6%) and Cu (3%), or Ni (67 %), Cr (6%), Fe (4%), Si (7%), C (0.25%) and B (15.75%), or finally Ni (60%), Pd (20%), P (17%) and B (3%).
- An iron-based amorphous metal alloy can include Fe (45%), Cr (20%), Mo (14%), C (15%) and B (6%), or Fe (56%), Co (7 %), Ni (7%), Zr (8%), Nb (2%) and B (20%).
- a gold-based amorphous metal alloy can include Au (49%), Ag (5%), Pd (2.3%), Cu (26.9%) and Si (16.3%).
- the figures 2a and 2b show in more detail on the one hand a cross section of the watch case at the level of the control member 9 in the rest position in the middle part 2 ( figure 2a ), and on the other hand a cross section of the watch case at the level of the control member 9 in the adjustment position partly outside the opening 12 in the caseband 2 ( figure 2b ).
- the elements in relation to the control member 9 and the caseband 2 like all the elements of the watch case, have already been mentioned above with reference to the figure 1 .
- the annular contact surface 21 of the first crown portion 13 is of conical shape, as well as the annular receiving surface 22 of the middle part 2 of shape complementary to the annular contact surface. 21.
- the first portion of the crown 13 is placed in conical bearing in the housing with an annular receiving surface 22 of the middle part 2, once the threaded portion 11 'of the rod 11 has been screwed into the internal thread 23 of the tubular opening 12 of the middle part 2.
- the angle of inclination ⁇ of the surfaces 21, 22 can be of the order of 55 ° ⁇ 10 °, and preferably at 55 °, or even at 65 °.
- the second seal 19 bears against the annular receiving surface 22 of the middle part 2. A seal is maintained by this, but when the diving watch is at great depths under water, the conical contact arrangement between the crown 13 and the middle part 2 makes it possible to hermetically close any interstice between the surfaces in contact with a better distribution of the stresses.
- the crown 13 is rotated to unscrew the portion 11 'of the thread 23 from the tubular opening 12, and the crown 13 is pulled out of the watch case.
- the rod 11 is connected towards the inside of the watch case by another internal rod to a component for adjusting the time parameters or other functions of the diving watch, but it has only been explained that the rod - crown 9 taken as part of the watch case.
- the cross section of the first portion of the ring 13 can be square, rectangular or polygonal.
- the annular contact surface 21 of the crown can be formed by several portions of inclined plane linked to each other to form the annular bearing surface.
- the holding means 23 in the tubular opening 12 can no longer be an internal thread, but a stopper or hook or other holding means.
- control member such as a stem-crown and of the watch case
- a stem-crown and of the watch case can be designed by those skilled in the art without departing from the scope of the invention defined by the claims.
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Abstract
La tige-couronne (9) d'une boîte de montre (1) étanche à l'eau, comprend une tige (11) insérée dans une ouverture tubulaire (12) d'une carrure (2) de la boîte de montre, et une couronne (13) comprenant une première portion reliée à la tige et une seconde portion de manipulation. La première portion de couronne comprend une surface de contact annulaire (21), qui est inclinée d'un angle défini plus petit que 90° par rapport à un axe central longitudinal de la tige-couronne en partant de la liaison de la tige à la première portion de la couronne vers l'extérieur de la seconde portion de couronne. Dans une position de repos, la première portion de couronne vient en contact ou appui contre une surface de réception annulaire (22) de la carrure de forme complémentaire à une extrémité de l'ouverture tubulaire vers l'extérieur. The stem-crown (9) of a watertight watch case (1) comprises a stem (11) inserted into a tubular opening (12) of a middle part (2) of the watch case, and a crown (13) comprising a first portion connected to the rod and a second handling portion. The first crown portion comprises an annular contact surface (21), which is inclined at a defined angle smaller than 90 ° with respect to a longitudinal central axis of the stem-crown starting from the connection of the stem to the stem. first portion of the crown to the outside of the second portion of the crown. In a rest position, the first crown portion comes into contact or rests against an annular receiving surface (22) of the middle part of complementary shape at one end of the tubular opening towards the outside.
Description
La présente invention concerne un organe de contrôle, tel qu'une tige-couronne d'une boîte de montre étanche notamment pour une montre de plongée.The present invention relates to a control member, such as a stem-crown of a waterproof watch case, in particular for a diving watch.
L'invention concerne également une boîte de montre comprenant un organe de contrôle, tel qu'une tige-couronne pour le réglage de paramètres du temps ou d'autres fonctions pour une montre de plongée.The invention also relates to a watch case comprising a control member, such as a stem-crown for adjusting time parameters or other functions for a diving watch.
Pour prévoir l'utilisation d'une montre mécanique ou électronique sous l'eau, la boîte de montre, qui comprend un mouvement horloger ou un module horloger à base de temps, doit être fermée de manière bien étanche. Pour ce faire, la boîte de montre comprend un fond fixé de manière étanche à un premier côté d'une carrure et une glace fixée à un second côté opposé de la carrure. Des garnitures d'étanchéité sont prévues à l'assemblage du fond, de la carrure et de la glace de montre. Un organe de contrôle ou réglage de fonctions de la montre est monté également de manière étanche à travers la carrure de la boîte en position de repos.In order to provide for the use of a mechanical or electronic watch underwater, the watch case, which comprises a watch movement or a time-based watch module, must be closed in a well-sealed manner. To do this, the watch case comprises a case back fixed in a sealed manner to a first side of a middle part and a crystal fixed to a second opposite side of the middle part. Sealing gaskets are provided for the assembly of the back, the caseband and the watch crystal. A member for controlling or adjusting the functions of the watch is also mounted in a sealed manner through the middle part of the case in the rest position.
Généralement des boîtes de montre avec l'organe de contrôle ou réglage ne sont pas configurées ou assemblées pour supporter de fortes pressions d'eau par exemple lors d'une plongée étant donné que la pression à l'intérieur de la boîte de montre est proche de la pression atmosphérique. De simples garnitures d'étanchéité de montres traditionnelles ne suffisent pas pour garantir une bonne étanchéité à l'eau de la boîte lors d'une plongée à de très grandes profondeurs sous l'eau.Generally, watch cases with the control or adjustment member are not configured or assembled to withstand high water pressures for example during a dive since the pressure inside the watch case is close atmospheric pressure. Simple gaskets of traditional watches are not sufficient to guarantee a good watertightness of the case when diving to very great depths underwater.
On peut citer la demande de brevet
Le brevet
La demande de brevet
L'invention a donc pour but principal de pallier les inconvénients de l'état de la technique décrit ci-dessus en proposant d'une part un organe de contrôle, tel qu'une tige-couronne d'une boîte de montre étanche à l'eau, et d'autre part une boîte de montre étanche à l'eau adaptée pour supporter les fortes pression d'eau pour une plongée à de grandes profondeurs sous l'eau.The main object of the invention is therefore to overcome the drawbacks of the state of the art described above by proposing on the one hand a control member, such as a stem-crown of a waterproof watch case. 'water, and on the other hand a waterproof watch case adapted to withstand high water pressure for diving to great depths underwater.
A cet effet, la présente invention concerne un organe de contrôle, tel qu'une tige-couronne d'une boîte de montre étanche à l'eau, qui comprend les caractéristiques de la revendication indépendante 1.To this end, the present invention relates to a control member, such as a stem-crown of a waterproof watch case, which comprises the features of independent claim 1.
Des formes particulières d'exécution de l'organe de contrôle sont définies dans les revendications dépendantes 2 à 7.Particular embodiments of the control organ are defined in
Un avantage de l'organe de contrôle d'une boîte de montre étanche à l'eau réside dans le fait qu'il est sous la forme d'une tige-couronne, dont la couronne comprend une première portion et une seconde portion de manipulation. La première portion a une surface de contact annulaire, qui est inclinée d'un angle défini plus petit que 90° par rapport à un axe central longitudinal de la tige-couronne pour pouvoir venir en contact d'une surface de réception annulaire de la carrure, qui est de forme complémentaire. De cette manière, une fois la tige-couronne montée sur la carrure de la boîte de montre toute différence de pression de l'eau par rapport à la pression à l'intérieur de la boîte de montre 1 a tendance à fermer tout interstice entre les surfaces en contact inclinées vers l'intérieur de la boîte de montre.An advantage of the control member of a waterproof watch case lies in the fact that it is in the form of a stem-crown, the crown of which comprises a first portion and a second handling portion. . The first portion has an annular contact surface, which is inclined at a defined angle smaller than 90 ° with respect to a longitudinal central axis of the stem-crown to be able to come into contact with an annular receiving surface of the middle part. , which is of complementary form. In this way, once the stem-crown is mounted on the middle part of the watch case, any difference in water pressure relative to the pressure inside the watch case 1 tends to close any gap between the watches. contact surfaces inclined towards the inside of the watch case.
A cet effet, la présente invention concerne aussi une boîte de montre étanche à l'eau avec au moins un organe de contrôle, tel qu'une tige-couronne, qui comprend les caractéristiques de la revendication indépendante 8.To this end, the present invention also relates to a watertight watch case with at least one control member, such as a stem-crown, which includes the features of
Des formes d'exécution de la boîte de montre étanche à l'eau sont définies dans les revendications dépendantes 9 à 13.Embodiments of the waterproof watch case are defined in
Avantageusement, la couronne a une surface de contact annulaire, qui est inclinée d'un angle défini plus petit que 90° par rapport à un axe central longitudinal de la tige-couronne pour venir en contact d'une surface de réception annulaire de la carrure, qui est de forme complémentaire dans une position de repos.Advantageously, the crown has an annular contact surface, which is inclined at a defined angle smaller than 90 ° relative to a longitudinal central axis of the stem-crown to come into contact with an annular receiving surface of the middle part. , which is of complementary shape in a rest position.
Les buts, avantages et caractéristiques de l'organe de contrôle, tel qu'une tige-couronne d'une boîte de montre étanche à l'eau et la boîte de montre le comprenant apparaîtront mieux dans la description suivante de manière non limitative en regard des dessins sur lesquels :
- la
figure 1 représente de manière simplifiée une coupe transversale d'une boîte étanche à l'eau d'une montre de plongée selon l'invention, - les
figures 2a et2b représentent d'une part une coupe transversale de détail de la boîte étanche à l'eau au niveau de l'organe de contrôle en position de repos selon l'invention, et d'autre part une coupe transversale de détail de la boîte étanche à l'eau au niveau de l'organe de contrôle en position de réglage selon l'invention.
- the
figure 1 shows in a simplified manner a cross section of a waterproof case of a diving watch according to the invention, - the
figures 2a and2b show on the one hand a detailed cross section of the watertight box at the level of the control member in the rest position according to the invention, and on the other hand a detailed cross section of the watertight box water at the level of the control member in the adjustment position according to the invention.
Dans la description suivante, tous les composants d'une boîte de montre étanche à l'eau notamment d'une montre de plongée, qui sont bien connus d'un homme du métier dans ce domaine technique ne sont relatés que de manière simplifiée.In the following description, all the components of a waterproof watch case, in particular a diving watch, which are known to a person skilled in the art in this technical field are only related in a simplified manner.
La
L'organe de contrôle 9 se présente comme une tige-couronne 9. Il comprend principalement une tige 11 et une couronne 13 susceptible d'être manipulée par une main d'un utilisateur à l'extérieur de la boîte de montre 1. En position de repos comme montré à la
La couronne 13 comprend une première portion reliant directement la tige 11 et une seconde portion de manipulation. La première portion comprend une surface de contact annulaire 21, qui est inclinée d'un angle défini plus petit que 90° par rapport à un axe central longitudinal de la tige-couronne 9 en partant de la liaison de la tige 11 à la première portion de la couronne 13 vers l'extérieur de la seconde portion de couronne 13 ou de la boîte de montre 1. La première portion de la couronne comprend encore une seconde rainure annulaire 29 logeant une seconde garniture d'étanchéité 19 de forme torique (Butadiène Caoutchouc Nitrile), et qui se situe proche de la liaison entre la première portion et la seconde portion de manipulation de la couronne 13. La seconde rainure annulaire 29 peut être de section transversale rectangulaire pour le maintien de la seconde garniture d'étanchéité 19 dans la rainure en position de réglage de la tige-couronne 9.The
La surface de contact annulaire 21 de la première portion de la couronne 13 est inclinée d'un angle défini pour venir en contact d'une surface de réception annulaire 22 de la carrure 2 en position de repos. Cette surface de réception annulaire 22 est de forme complémentaire à la surface de contact annulaire 21 et normalement avec un même angle d'inclinaison que la surface de contact annulaire 21. Dans le cas où la surface de contact annulaire 21 de la première portion de couronne 13 est de forme conique, tout comme la surface de réception annulaire 22 de la carrure 2, l'angle d'inclinaison α des surfaces 21, 22 peut être de l'ordre de 55° ± 10°, mais de préférence à 55°, voire à 65°.The
Il est encore à noter que la première portion et la seconde portion de la couronne 13 ne forment qu'une seule pièce massive, par exemple dans un matériau, tel que le titane, comme également par exemple la carrure 2. La tige 11 peut également venir de matière directement avec la couronne pour ne former qu'une seule pièce.It should also be noted that the first portion and the second portion of the
Le fond 4 comprend un bord annulaire 14 à taraudage intérieur pour être vissé sur un taraudage 15 sur le côté inférieur de la carrure 2. Une surface d'appui annulaire du fond 4 vient en contact d'une surface intérieure annulaire de la carrure 2 de forme complémentaire à la surface d'appui lors du montage du fond 4 sur la carrure 2. Les surfaces d'appui et intérieure sont inclinées d'un angle déterminé par rapport à un axe perpendiculaire à un plan de boîte de montre 1. Dans le cas d'une carrure de forme générale cylindrique, les surfaces d'appui et intérieure sont de forme conique et inclinées vers l'intérieur de la boîte de montre 1 d'un angle déterminé par rapport à un axe central de la boîte de montre 1. Le côté inférieur de la carrure 2 comprend encore une rainure annulaire 16 logeant une garniture d'étanchéité 6 (Butadiène Caoutchouc Nitrile) sous forme torique en contact de la surface d'appui lors du montage du fond 4 sur la carrure 2. Pour une carrure 2 et un fond 4 réalisés dans un matériau, tel que le titane, l'angle peut être de l'ordre de 60° ± 5° par rapport à l'axe central. Ceci permet d'avoir une bonne répartition des contraintes entre le fond 4 et la carrure 2 dues à la pression de l'eau lors d'une plongée à de grandes profondeurs sous l'eau.The
La glace 3 est fixée à la carrure 2 selon un même principe que le montage du fond 4 à la carrure 2. Pour ce faire, la glace 3 comprend une surface périphérique annulaire pour être fixée par l'intermédiaire d'un joint 5 de fixation sur une surface intérieure annulaire du côté supérieur de la carrure 2. La surface intérieure annulaire est de forme complémentaire à la surface périphérique annulaire. La surface périphérique annulaire 13 de la glace 3 est inclinée d'un angle défini plus petit que 90° par rapport à un axe perpendiculaire à un plan de boîte de montre 1. De préférence, la surface intérieure annulaire est inclinée généralement vers l'intérieur de la boîte de montre 1 d'un même angle que la surface périphérique annulaire par rapport à un axe central. Si la carrure 2 est de forme générale cylindrique, la surface intérieure annulaire et la surface périphérique annulaire sont de forme conique. L'angle défini d'inclinaison des surfaces peut être de l'ordre de 43° ± 5° par rapport à l'axe central. Ceci permet d'avoir une bonne répartition des contraintes entre la glace 3 et la carrure 2 dues à la pression de l'eau lors d'une plongée à de grandes profondeurs sous l'eau. La différence de pression de l'eau par rapport à la pression à l'intérieur de la boîte de montre 1 a tendance à fermer tout interstice entre les surfaces en contact avec le joint 5 de fixation grâce à l'inclinaison des surfaces de contact vers l'intérieur de la boîte de montre 1. Cela garantit une bonne étanchéité et une résistance à de fortes pressions.The
Le joint 5 de fixation présenté peut être composé en métal amorphe ou en alliage métallique amorphe. Le joint 5 de fixation est de forme annulaire pour la fermeture hermétique de la glace 3 sur la carrure 2. Pour une carrure 2 de forme générale cylindrique, le joint 5 de fixation comprend une partie de forme conique surmontée d'une partie cylindrique attachée à une paroi intérieure annulaire de la carrure 2 et une paroi extérieure annulaire de la glace 3. La glace 3 est fixée à la carrure 2 par l'intermédiaire du joint en métal amorphe suite à une opération de fixation à chaud.The presented fixing joint 5 can be made of an amorphous metal or an amorphous metal alloy. The fixing
Plusieurs types d'alliages de métaux amorphes peuvent être utilisés pour réaliser entièrement le joint métallique monobloc 5, 5'. Dans les cas les plus fréquents, l'alliage métallique amorphe peut être principalement composé de zirconium, ce qui permet de former le joint à une température supérieure à 350°C, c'est-à-dire supérieure à la température de transition vitreuse de l'alliage. L'alliage métallique amorphe à base de zirconium peut être composé de Zr(52.5%), Cu(17.6%), Ni(14.9%), Al(10%) et Ti(5%). L'alliage métallique amorphe à base de zirconium peut aussi comprendre Zr(58.5%), Cu(15.6%), Ni(12.8%), Al(10.3%) et Nb(2.8%). L'alliage métallique amorphe à base de zirconium peut aussi comprendre Zr(44%), Ti(11%), Cu(9.8%), Ni(10.2%) et Be(25%), ou finalement Zr(58%), Cu(22%), Fe(8%) et Al(12%). De préférence, pour faciliter la réalisation d'un tel joint, l'alliage métallique amorphe peut être principalement composé de platine (Pt), ce qui permet de former le joint à une température supérieure à 230°C. L'alliage métallique amorphe à base de platine peut comprendre Pt(57.5%), Cu(14.7%), Ni(5.3%) et P(22.5%). Il peut aussi être prévu de réaliser le joint métallique monobloc 5, 5' en alliage métallique amorphe à base principalement de palladium (Pd, ce qui permet de former le joint à une température supérieure à 300°C.Several types of amorphous metal alloys can be used to completely produce the one-
On peut citer encore d'autres alliages de métaux amorphes. Un alliage de métaux amorphes à base de titane peut comprendre Ti(41.5%), Zr(10%), Cu(35%), Pd(11%) et Sn(2.5%). Un alliage métallique amorphe à base de palladium peut comprendre Pd(43%), Cu(27%), Ni(10%) et P(20%), ou Pd(77%), Cu(6%) et Si(16.5%), ou finalement Pd(79%), Cu(6%), Si(10%) et P(5%). Un alliage métallique amorphe à base de nickel peut comprendre Ni(53%), Nb(20%), Ti(10%), Zr(8%), Co(6%) et Cu(3%), ou Ni(67%), Cr(6%), Fe(4%), Si(7%), C(0.25%) et B(15,75%), ou finalement Ni(60%), Pd(20%), P(17%) et B(3%). Un alliage métallique amorphe à base de fer peut comprendre Fe(45%), Cr(20%), Mo(14%), C(15%) et B(6%), ou Fe(56%), Co(7%), Ni(7%), Zr(8%), Nb(2%) et B(20%). Un alliage métallique amorphe à base d'or peut comprendre Au(49%), Ag(5%), Pd(2.3%), Cu(26.9%) et Si(16.3%).Mention may also be made of other alloys of amorphous metals. A titanium-based amorphous metal alloy can include Ti (41.5%), Zr (10%), Cu (35%), Pd (11%) and Sn (2.5%). An amorphous metal alloy based on palladium can include Pd (43%), Cu (27%), Ni (10%) and P (20%), or Pd (77%), Cu (6%) and Si (16.5 %), or finally Pd (79%), Cu (6%), Si (10%) and P (5%). An amorphous nickel-based metal alloy can include Ni (53%), Nb (20%), Ti (10%), Zr (8%), Co (6%) and Cu (3%), or Ni (67 %), Cr (6%), Fe (4%), Si (7%), C (0.25%) and B (15.75%), or finally Ni (60%), Pd (20%), P (17%) and B (3%). An iron-based amorphous metal alloy can include Fe (45%), Cr (20%), Mo (14%), C (15%) and B (6%), or Fe (56%), Co (7 %), Ni (7%), Zr (8%), Nb (2%) and B (20%). A gold-based amorphous metal alloy can include Au (49%), Ag (5%), Pd (2.3%), Cu (26.9%) and Si (16.3%).
Les
Dans cette forme d'exécution, il est considéré que la surface de contact annulaire 21 de la première portion de couronne 13 est de forme conique, ainsi que la surface de réception annulaire 22 de la carrure 2 de forme complémentaire à la surface de contact annulaire 21. A la
Pour le réglage de paramètres du temps ou d'autres fonctions pour une montre de plongée comme montré à la
Il est encore à noter qu'il peut être envisagé aussi que la section transversale de la première portion de couronne 13 peut être carrée, rectangulaire ou polygonale. Cela signifie que la surface de contact annulaire 21 de la couronne peut être constituée par plusieurs portions de plan incliné liées l'une à l'autre pour former la surface d'appui annulaire. Dans ces conditions, le moyen de maintien 23 dans l'ouverture tubulaire 12 ne peut plus être un taraudage, mais un cran d'arrêt ou crochet ou autre moyen de maintien.It should also be noted that it can also be envisaged that the cross section of the first portion of the
A partir de la description qui vient d'être faite, plusieurs variantes de réalisation de l'organe de contrôle, tel qu'une tige-couronne et de la boîte de montre peuvent être conçues par l'homme du métier sans sortir du cadre de l'invention définie par les revendications.From the description which has just been given, several variant embodiments of the control member, such as a stem-crown and of the watch case can be designed by those skilled in the art without departing from the scope of the invention defined by the claims.
Claims (13)
caractérisé en ce que la première portion de couronne (13) comprend une surface de contact annulaire (21), qui est inclinée d'un angle défini plus petit que 90° par rapport à un axe central longitudinal de la tige-couronne (9) en partant de la liaison de la tige (11) à la première portion de la couronne (13) vers l'extérieur de la seconde portion de couronne (13), la première portion de couronne étant configurée de manière à pouvoir venir en contact d'une surface de réception annulaire (22) de la carrure (2) de forme complémentaire.Control organ (9), such as a stem-crown (9) of a waterproof watch case (1), in particular for a diving watch, the stem-crown comprising a stem (11) intended to be inserted into a tubular opening (12) of a middle part (2) of the watch case (1), and a crown (13) comprising a first portion connected to the rod (11) and a second handling portion,
characterized in that the first crown portion (13) comprises an annular contact surface (21), which is inclined at a defined angle smaller than 90 ° with respect to a longitudinal central axis of the stem-crown (9) starting from the connection of the rod (11) to the first portion of the crown (13) towards the outside of the second portion of the crown (13), the first portion of the crown being configured so as to be able to come into contact with 'an annular receiving surface (22) of the middle part (2) of complementary shape.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19173327.8A EP3736641A1 (en) | 2019-05-08 | 2019-05-08 | Stem-crown of a sealed watch case, and watch case including same |
US16/847,831 US11156962B2 (en) | 2019-05-08 | 2020-04-14 | Stem-crown of a water-resistant watch case, and watch case comprising same |
JP2020077146A JP6872059B2 (en) | 2019-05-08 | 2020-04-24 | Stem-crown of water-resistant portable watch case and portable watch case equipped with it |
RU2020114826A RU2737132C1 (en) | 2019-05-08 | 2020-04-27 | Watch-winding stem of waterproof watch case and watchcase containing such watch-winding stem |
CN202010376863.4A CN111913382B (en) | 2019-05-08 | 2020-05-07 | Stem-crown for a watertight watch case and watch case comprising such a stem-crown |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19173327.8A EP3736641A1 (en) | 2019-05-08 | 2019-05-08 | Stem-crown of a sealed watch case, and watch case including same |
Publications (1)
Publication Number | Publication Date |
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EP3736641A1 true EP3736641A1 (en) | 2020-11-11 |
Family
ID=66597487
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19173327.8A Pending EP3736641A1 (en) | 2019-05-08 | 2019-05-08 | Stem-crown of a sealed watch case, and watch case including same |
Country Status (5)
Country | Link |
---|---|
US (1) | US11156962B2 (en) |
EP (1) | EP3736641A1 (en) |
JP (1) | JP6872059B2 (en) |
CN (1) | CN111913382B (en) |
RU (1) | RU2737132C1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH717569B1 (en) * | 2020-06-26 | 2024-07-31 | Omega Sa | Crown stem of a waterproof watch case, and watch case comprising it. |
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- 2020-04-24 JP JP2020077146A patent/JP6872059B2/en active Active
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Also Published As
Publication number | Publication date |
---|---|
JP6872059B2 (en) | 2021-05-19 |
RU2737132C1 (en) | 2020-11-25 |
CN111913382A (en) | 2020-11-10 |
US20200356054A1 (en) | 2020-11-12 |
US11156962B2 (en) | 2021-10-26 |
CN111913382B (en) | 2022-08-02 |
JP2020183951A (en) | 2020-11-12 |
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