EP3644132A1 - Striking or musical watch with at least one acoustic radiation membrane, and method of manufacturing said membrane - Google Patents
Striking or musical watch with at least one acoustic radiation membrane, and method of manufacturing said membrane Download PDFInfo
- Publication number
- EP3644132A1 EP3644132A1 EP18202869.6A EP18202869A EP3644132A1 EP 3644132 A1 EP3644132 A1 EP 3644132A1 EP 18202869 A EP18202869 A EP 18202869A EP 3644132 A1 EP3644132 A1 EP 3644132A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- membrane
- watch
- border
- bezel
- annular
- 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.)
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- 239000012528 membrane Substances 0.000 title claims abstract description 122
- 230000005855 radiation Effects 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 239000013078 crystal Substances 0.000 claims abstract description 25
- 239000011521 glass Substances 0.000 claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 9
- 239000007769 metal material Substances 0.000 claims abstract description 8
- 230000001419 dependent effect Effects 0.000 claims abstract description 6
- 239000005300 metallic glass Substances 0.000 claims abstract description 6
- 239000000758 substrate Substances 0.000 claims description 15
- 238000005323 electroforming Methods 0.000 claims description 12
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 12
- 239000010931 gold Substances 0.000 claims description 11
- 229910052737 gold Inorganic materials 0.000 claims description 11
- 230000000295 complement effect Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 230000026683 transduction Effects 0.000 description 1
- 238000010361 transduction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- 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
- G04B21/00—Indicating the time by acoustic means
- G04B21/02—Regular striking mechanisms giving the full hour, half hour or quarter hour
- G04B21/08—Sounding bodies; Whistles; Musical apparatus
-
- 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
- G04B21/00—Indicating the time by acoustic means
-
- 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
- G04B21/00—Indicating the time by acoustic means
- G04B21/02—Regular striking mechanisms giving the full hour, half hour or quarter hour
- G04B21/06—Details of striking mechanisms, e.g. hammer, fan governor
-
- 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
- G04B23/00—Arrangements producing acoustic signals at preselected times
- G04B23/02—Alarm clocks
- G04B23/028—Sounding bodies; boxes used as sounding cases; fixation on or in the case
-
- 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
- G04B37/0075—Cases with means to enhance sound transmission
-
- 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
Definitions
- the invention therefore aims to overcome the drawbacks of the prior art by providing a striking or musical watch provided with at least one acoustic radiation membrane arranged to produce a rich sound with better acoustic radiation from vibrations to low frequency via the membrane linked to a crystal or a bezel linked to a crystal from the watch case.
- the invention relates to a striking or musical watch cited above, which comprises the characteristics defined in independent claim 1.
- the membrane can be manufactured by an electroforming process. It can be produced with a thickness of less than 80 ⁇ m, for example up to 37 ⁇ m, which makes it possible to lower the radiation frequency up to 500 Hz while allowing good acoustic radiation up to frequencies around 8 to 10 kHz. By working at such a low frequency, this makes it possible to obtain a warmer, stronger sound, because the more there are radiated modes and the more the human ear interprets this as a loud sound, and more distinguishable when generating a music.
- the membrane can be made of a metallic material, such as 5N gold.
- a particular manufacturing step is defined in dependent claim 16.
- Membrane 2 is of annular shape with an arcuate or curved part, which is directed towards the side of the watch crystal 5 in an active zone 11 of the membrane 2 in a direction Z perpendicular to the plane of the watch.
- the arched portion is a portion of a circle in a cross section as shown, which is extended by a straight portion, defining a frustoconical portion, up to connection with the first border 23.
- the second border 20 of the membrane 2 is fixed by a fixing ring 10, which is driven for example on an external cylindrical wall at the bottom of the telescope 3.
- An internal annular groove can be provided in the fixing ring for guiding an internal fold of the second edge 20 of the membrane 2.
- the bezel 3 also includes an upper edge, where the watch crystal 5 fixed by the seal 12 rests on an inner upper wall of the bezel 3.
- a lower and inner edge of the bezel 3 is above the dial 6 without touching it to allow mobility of the telescope 3 with the glass 5 maintained by the membrane 2.
- a space between 70 and 100 ⁇ m is provided between the bezel 3 and the dial 6 or between the bezel 3 and the complementary bezel 13 to allow mobility to the membrane 2 and bezel assembly 3.
- the bezel 3 linked to the crystal 5 or the crystal 5 is movable relative to the middle part 4 via the membrane 2 during the vibration of the membrane 2 following a sound generated by the striking mechanism of the watch in the watch case.
- the bezel 3 connected to the membrane 2 vibrates to the same modes of vibration as the membrane 2, which are significantly lower than the modes of vibration of a conventional covering.
- the thickness of the spring-type membrane 2 is therefore reduced to reduce the frequency f 0 of the first vibration mode by reducing the stiffness k of the membrane 2.
- the excitation of the membrane 2 is therefore done by a transmission of transverse waves generated by the vibration of one or more stamps 9 arranged below the dial in this first embodiment.
- provision may be made for having a sapphire crystal 5 with a thickness of 2 mm and a diameter of the order of 37.8 mm with a bezel 3 made of metal, such as gold so as to have a mass of the order of 13 grams.
- the bezel 3 is of annular shape with an inside diameter of the order of 36 mm and an outside diameter of the order of 41.9 mm, and a thickness of the order of 3.55 mm.
- the membrane 2, which can be electro-formed as explained below with reference to figures 4a to 4e may be preferably made of 5N gold to match the desired resonant frequency, because also a large part of the covering elements are made of gold.
- the active zone 11 of the membrane may be a space between the telescope 3 and the complementary telescope 13 of 1.2 mm wide by 2 mm high in the Z direction.
- the figure 3 shows a partial cross-sectional view of a striking or musical watch having a membrane at the level of the crystal and the middle of the watch case according to a second embodiment of the invention.
- the only difference from this second embodiment resides in the second border 20 of the membrane 2.
- This second border comprises a heel 20 used to start the manufacture of the membrane by electroforming.
- this heel which is an annular gold ring for example, can be directly driven onto an external cylindrical wall at the bottom of the bezel 3.
- this makes it possible to obtain a membrane 2 with one-piece fixing heel 20.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Acoustics & Sound (AREA)
- Electric Clocks (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
La montre (1) à sonnerie est munie d'une membrane (2) de rayonnement acoustique en matériau métallique ou métal amorphe. La membrane est sous forme de boucle à paroi d'une certaine épaisseur pour être reliée par une première bordure (23) à une carrure (4) d'une boîte de montre et par une seconde bordure (20) à une lunette (3) fixée à une glace de montre (5). La lunette liée à la glace est mobile par rapport à la carrure via la membrane lors de la vibration de la membrane suite à un son généré par un mécanisme de sonnerie de la montre dans la boîte de montre. La membrane est configurée avec une paroi d'une épaisseur déterminée dans une zone active dépendante de la masse de la lunette liée à la glace pour avoir une fréquence f<sub>0</sub>d'un premier mode de vibration, qui se situe à basse fréquence inférieure ou égale à 4 kHz selon l'équation f<sub>0</sub>= (1/2-π)·(k/m)<sup>1/2</sup>où k est la raideur de la membrane, qui dépend de son épaisseur, et m est la masse de la lunette liée à la glace.The striking watch (1) is provided with an acoustic radiation membrane (2) made of metallic material or amorphous metal. The membrane is in the form of a wall loop of a certain thickness to be connected by a first border (23) to a middle part (4) of a watch case and by a second border (20) to a bezel (3). attached to a watch glass (5). The bezel linked to the crystal is movable relative to the middle part via the membrane during the vibration of the membrane following a sound generated by a striking mechanism of the watch in the watch case. The membrane is configured with a wall of a determined thickness in an active zone dependent on the mass of the telescope linked to the ice to have a frequency f <sub> 0 </sub> of a first mode of vibration, which is located at low frequency less than or equal to 4 kHz according to the equation f <sub> 0 </sub> = (1/2-π) · (k / m) <sup> 1/2 </sup> where k is the stiffness of the membrane, which depends on its thickness, and m is the mass of the telescope linked to the ice.
Description
L'invention concerne une montre à sonnerie ou musicale munie d'au moins une membrane de rayonnement acoustique. La montre comprend notamment une boîte de montre avec un fond, une carrure et fermée par une glace pour visionner des informations horaires sur un cadran sous la glace. La montre comprend encore dans la boîte de montre, un mécanisme de sonnerie pour générer un son ou une musique en des instants prédéfinis ou volontairement.The invention relates to a striking or musical watch provided with at least one acoustic radiation membrane. The watch includes in particular a watch case with a back, a middle part and closed by a glass to view time information on a dial under the glass. The watch also includes in the watch case, a ringing mechanism for generating sound or music at predefined moments or voluntarily.
L'invention concerne également un procédé de fabrication d'une membrane de rayonnement acoustique pour une montre à sonnerie ou musicale.The invention also relates to a method of manufacturing an acoustic radiation membrane for a striking or musical watch.
Il est connu de munir une montre d'un mécanisme de sonnerie pour générer un son ou une musique. Pour ce faire, un timbre de la montre à sonnerie ou un clavier de la montre musicale sont disposés dans la boîte de montre. Ainsi, les vibrations du timbre ou des lames du clavier sont transmises aux différentes pièces d'habillage. Ces pièces d'habillage sont notamment la carrure, la lunette, la glace et le fond de la boîte de montre. Ces grandes pièces d'habillage se mettent à rayonner du son dans l'air sous l'effet des vibrations transmises. Lorsqu'un son est produit soit par un timbre frappé par un marteau, soit par une ou plusieurs lames du clavier en vibration, ces pièces d'habillage sont capables de rayonner le son produit dans l'air.It is known to provide a watch with a striking mechanism to generate sound or music. To do this, a timbre of the striking watch or a keyboard of the musical watch are placed in the watch case. Thus, the vibrations of the timbre or of the keyboard blades are transmitted to the various trim parts. These trim pieces include the middle, the bezel, the crystal and the back of the watch case. These large cladding pieces begin to radiate sound in the air under the effect of transmitted vibrations. When a sound is produced either by a timbre struck by a hammer, or by one or more blades of the keyboard in vibration, these cladding pieces are capable of radiating the sound produced in the air.
Cependant dans une montre musicale ou à sonnerie traditionnelle, le rendement acoustique, sur la base de la transduction vibro-acoustique complexe des pièces d'habillage, est faible. Pour améliorer et augmenter le niveau acoustique d'un son ou d'une note, il doit être tenu compte de la matière, de la géométrie et des conditions aux limites des pièces d'habillage. Les configurations des pièces d'habillage sont aussi dépendantes de l'esthétique de la montre et des contraintes de fonctionnement, ce qui peut limiter les possibilités d'adaptation.However, in a traditional musical or ringing watch, the acoustic efficiency, based on the complex vibro-acoustic transduction of the trim parts, is low. To improve and increase the acoustic level of a sound or a note, account must be taken of the material, the geometry and the boundary conditions of the covering parts. The configurations of the trim parts are also dependent on the aesthetics of the watch and the operating constraints, which can limit the possibilities of adaptation.
Pour pouvoir améliorer le rendement vibro-acoustique du mécanisme de sonnerie, il est prévu de disposer une ou plusieurs membranes dans la boîte de montre. Les membranes sont dimensionnées et configurées pour que la ou les notes générées dans la boîte de montre soient rayonnées efficacement. Les fréquences des notes générées doivent être proches des modes propres de vibration de la ou des membranes pour qu'elles entrent en résonance.To be able to improve the vibro-acoustic efficiency of the striking mechanism, provision is made for one or more membranes in the watch case. The membranes are sized and configured so that the note (s) generated in the watch case are effectively radiated. The frequencies of the generated notes must be close to the natural modes of vibration of the membrane (s) so that they enter into resonance.
La demande de brevet
Les brevets
L'invention a donc pour but de pallier aux inconvénients de l'état de la technique en fournissant une montre à sonnerie ou musicale munie d'au moins une membrane de rayonnement acoustique agencée pour produire un son riche avec un meilleur rayonnement acoustique des vibrations à basse fréquence par l'intermédiaire de la membrane liée à une glace ou une lunette liée à une glace de la boîte de montre.The invention therefore aims to overcome the drawbacks of the prior art by providing a striking or musical watch provided with at least one acoustic radiation membrane arranged to produce a rich sound with better acoustic radiation from vibrations to low frequency via the membrane linked to a crystal or a bezel linked to a crystal from the watch case.
A cet effet, l'invention concerne une montre à sonnerie ou musicale citée ci-devant, qui comprend les caractéristiques définies dans la revendication indépendante 1.To this end, the invention relates to a striking or musical watch cited above, which comprises the characteristics defined in
Des formes d'exécution particulières de la montre à sonnerie ou musicale sont définies dans les revendications dépendantes 2 à 13.Particular embodiments of the striking or musical watch are defined in
Un avantage de la montre à sonnerie ou musicale réside dans le fait que la membrane est configurée de telle manière que lors de son excitation par génération d'un son provenant d'au moins un timbre ou d'une lame d'un clavier en vibration, il y a une transmission d'ondes transversales. La membrane de faible épaisseur relie d'un côté une lunette fixée à une glace ou directement une glace de montre, et d'un autre côté une carrure de boîte de montre. Ainsi, la lunette avec la glace ou la glace seule deviennent mobiles et vibrent aux mêmes modes de vibration que la membrane afin d'atteindre des modes de vibration en-dessous de 4 kHz, ou à 1 kHz voire inférieur en fonction de l'épaisseur de la membrane et/ou de sa courbure également. La membrane fait office de ressort en liaison à la lunette-glace ou à la glace qui constitue la masse. La fréquence du premier mode de vibration dépend de la racine carrée de la raideur sur la masse. Ce premier mode de vibration est de type piston. Ainsi, plus la raideur de la membrane est faible, et plus la fréquence du premier mode de vibration est faible, ce qui est recherché.An advantage of the striking or musical watch lies in the fact that the membrane is configured in such a way that when it is excited by generation of a sound coming from at least one timbre or from a blade of a vibrating keyboard , there is a transmission of transverse waves. The thin membrane connects on one side a bezel attached to a crystal or directly a watch crystal, and on the other side a case middle of watch. Thus, the telescope with the glass or the glass only become mobile and vibrate at the same modes of vibration as the membrane in order to reach modes of vibration below 4 kHz, or at 1 kHz or even lower depending on the thickness of the membrane and / or its curvature also. The membrane acts as a spring in connection with the lens or with the lens which constitutes the mass. The frequency of the first mode of vibration depends on the square root of the stiffness on the mass. This first mode of vibration is of the piston type. Thus, the lower the stiffness of the membrane, the lower the frequency of the first vibration mode, which is sought.
Avantageusement, la membrane peut être fabriquée par un procédé d'électroformage. Elle peut être réalisée avec une épaisseur inférieure à 80 µm par exemple pouvant aller jusqu'à 37 µm, ce qui permet d'abaisser la fréquence de rayonnement jusqu'à 500 Hz tout en permettant un bon rayonnement acoustique jusqu'à des fréquences autour de 8 à 10 kHz. En travaillant à aussi basse fréquence, cela permet d'obtenir un son plus chaleureux, plus fort, car plus il y a de modes rayonnés et plus l'oreille humaine interprète cela comme un son fort, et plus distinguable lors de la génération d'une musique.Advantageously, the membrane can be manufactured by an electroforming process. It can be produced with a thickness of less than 80 μm, for example up to 37 μm, which makes it possible to lower the radiation frequency up to 500 Hz while allowing good acoustic radiation up to frequencies around 8 to 10 kHz. By working at such a low frequency, this makes it possible to obtain a warmer, stronger sound, because the more there are radiated modes and the more the human ear interprets this as a loud sound, and more distinguishable when generating a music.
La membrane peut être réalisée dans un matériau métallique, tel que de l'or 5N.The membrane can be made of a metallic material, such as 5N gold.
A cet effet, l'invention concerne également un procédé de fabrication d'au moins une membrane de rayonnement acoustique pour une montre à sonnerie ou musicale, qui comprend les caractéristiques définies dans les revendications indépendantes 14 et 15.To this end, the invention also relates to a method of manufacturing at least one acoustic radiation membrane for a striking or musical watch, which comprises the characteristics defined in
Une étape particulière de fabrication est définie dans la revendication dépendante 16.A particular manufacturing step is defined in dependent claim 16.
Les buts, avantages et caractéristiques d'une montre à sonnerie ou musicale munie d'au moins une membrane de rayonnement acoustique et du procédé de fabrication de la membrane apparaîtront mieux dans la description suivante notamment en regard des dessins sur lesquels :
- la
figure 1 représente une vue partielle en coupe transversale d'une montre à sonnerie ou musicale ayant une membrane au niveau de la glace et de la carrure de la boîte de montre selon une première forme d'exécution de l'invention, - les
figures 2a à 2c représentent plusieurs formes d'exécution de la membrane annulaire, dont une coupe transversale d'un côté est montrée, selon l'invention, - la
figure 3 représente une vue partielle en coupe transversale d'une montre à sonnerie ou musicale ayant une membrane au niveau de la glace et de la carrure de la boîte de montre selon une seconde forme d'exécution de l'invention, et - les
figures 4a à 4e représentent schématiquement différentes étapes de réalisation de la membrane montrée en coupe transversale de la seconde forme d'exécution selon l'invention.
- the
figure 1 represents a partial view in cross section of a striking or musical watch having a membrane at the level of the crystal and the middle of the watch case according to a first embodiment of the invention, - the
Figures 2a to 2c represent several embodiments of the annular membrane, of which a cross section on one side is shown, according to the invention, - the
figure 3 represents a partial view in cross section of a striking or musical watch having a membrane at the level of the crystal and the middle of the watch case according to a second embodiment of the invention, and - the
figures 4a to 4e schematically represent different stages of production of the membrane shown in cross section of the second embodiment according to the invention.
Dans la description suivante, toutes les parties d'une montre à sonnerie munie d'une membrane de rayonnement acoustique, qui sont bien connues dans ce domaine technique, ne sont décrites que sommairement. L'accent porte principalement sur l'agencement de la membrane dans la boîte de montre et sur sa configuration pour permettre un rayonnement acoustique adéquat suite à la génération d'un son dans la boîte de montre.In the following description, all the parts of a striking watch provided with an acoustic radiation membrane, which are well known in this technical field, are described only briefly. The main focus is on the arrangement of the membrane in the watch case and on its configuration to allow adequate acoustic radiation following the generation of a sound in the watch case.
La
Il est à noter que la première bordure 23 de la membrane 2 peut être fixée sur la partie supérieure de la carrure 4, notamment dans une rainure annulaire par l'intermédiaire d'une lunette complémentaire 13. Cette lunette complémentaire peut être fixée par vissage sur la partie supérieure de la carrure 4 ou par collage ou soudure ou brasage ou en étant chassée afin que la portion inférieure de la lunette complémentaire 13 vienne fixer la première bordure dans la rainure annulaire de la carrure 4. La lunette complémentaire 13 peut encore servir de protection de l'ensemble comprenant la lunette 3 liée à la glace 5 et à la membrane 2.It should be noted that the
A la
La membrane 2, comme représentée sur les
La lunette 3 comprend encore un bord supérieur, où repose la glace de montre 5 fixée par le joint 12 à une paroi supérieure intérieure de la lunette 3. Un bord inférieur et intérieur de la lunette 3 est au-dessus du cadran 6 sans le toucher pour laisser une mobilité de la lunette 3 avec la glace 5 maintenues par la membrane 2. Un espace entre 70 et 100 µm est prévu entre la lunette 3 et le cadran 6 ou entre la lunette 3 et la lunette complémentaire 13 pour laisser la mobilité à l'ensemble membrane 2 et lunette 3. Ainsi ce qui est recherché, la lunette 3 liée à la glace 5 ou la glace 5 est mobile par rapport à la carrure 4 par l'intermédiaire de la membrane 2 lors de la vibration de la membrane 2 suite à un son généré par le mécanisme de sonnerie de la montre dans la boîte de montre. La lunette 3 reliée à la membrane 2 vibre aux mêmes modes de vibration que la membrane 2, qui sont nettement plus bas que les modes de vibration d'un habillage conventionnel.The
Il est à noter qu'une fois que la membrane de forme annulaire est fixée à la lunette 3 liée à la glace 5 ou à la glace 5 seule, et à la carrure 4, l'intérieure de la boîte de la montre à sonnerie ou musicale est étanche tout en laissant la liberté de mouvement à la lunette 3 liée à la membrane 2 ou à la glace 5 liée à la membrane 2.It should be noted that once the annular-shaped membrane is fixed to the
La membrane est configurée avec une paroi d'une épaisseur déterminée, dépendante de la masse de la lunette 3 liée à la glace 5 ou de la glace 5 seule pour avoir une basse fréquence f0 du premier mode de vibration. Il est recherché d'avoir une basse fréquence inférieure ou égale à 4 kHz et de préférence inférieure ou égale à 1 kHz. Pour ce faire, il est tenu compte de l'équation f0 = (1/2π)·(k/m)1/2 où k est la raideur de la membrane 2, qui dépend de son épaisseur, et m est la masse de la lunette 3 liée à la glace 5 ou de la glace 5 seule. On peut donc baisser la fréquence de résonnance de la membrane 2 liée à la lunette 3 en augmentant la masse m de la lunette 3 liée à la glace 5. Cependant on préfère abaisser l'épaisseur de la membrane 2 de type ressort pour diminuer la fréquence f0 du premier mode de vibration en diminuant la raideur k de la membrane 2. L'excitation de la membrane 2 se fait donc par une transmission d'ondes transversales générées par la vibration d'un ou plusieurs timbres 9 disposés en dessous du cadran dans cette première forme d'exécution.The membrane is configured with a wall of a determined thickness, dependent on the mass of the
Une telle membrane 2 en liaison à la lunette 3 avec la glace 5 ou seulement en liaison à la glace 5 peut couvrir une bande de rayonnement acoustique de 1 kHz à 10 kHz avec les pièces d'habillage. Si l'épaisseur de la membrane 2 est réduite pour diminuer sa raideur suite à un procédé de fabrication par électroformage expliqué ci-après, la bande de rayonnement acoustique peut même se situer entre 500 Hz à 10 kHz.Such a
A titre d'exemple non limitatif, il peut être prévu d'avoir une glace 5 en saphir d'épaisseur de 2 mm et de diamètre de l'ordre de 37.8 mm avec une lunette 3 en métal, tel que de l'or de manière à avoir une masse de l'ordre de 13 grammes. La lunette 3 est de forme annulaire de diamètre intérieur de l'ordre de 36 mm et extérieur de l'ordre de 41.9 mm, et d'épaisseur de l'ordre de 3.55 mm. La membrane 2, qui peut être électro-formée comme expliqué ci-après en référence aux
Les
La courbure de la membrane 2 dans sa zone active peut jouer également un rôle sur sa raideur et influencer aussi l'abaissement de la fréquence du premier mode de vibration sous l'effet d'un effort dans la direction Z, étant donné l'encombrement réduit, où se situe la membrane 2.The curvature of the
De préférence sur toute la membrane 2, l'épaisseur de la membrane est sensiblement la même par exemple d'une épaisseur déterminée qui peut être de l'ordre de 80 µm et peut être abaissée à une épaisseur de l'ordre de 37 µm pour réduire la fréquence du premier mode de vibration vers 500 Hz pour une membrane en or 5N avec une lunette liée à la glace comme indiqué ci-dessus. Cela procure l'avantage de travailler à basse fréquence et d'obtenir un son plus chaleureux, plus fort, car il y a plusieurs modes rayonnés interprétés par l'oreille humaine comme un son fort, et plus distinguable dans le cas de la reproduction d'un ensemble de notes pour jouer une mélodie.Preferably over the
La
On va expliquer ci-après un procédé de fabrication de la membrane à monter une fois terminée dans la montre à sonnerie. Pour ce faire, on se réfère aux
A la
A la
A la
A la
Finalement à la
A partir de la description qui vient d'être faite, plusieurs variantes de la montre à sonnerie ou musicale munie de la membrane de rayonnement acoustique, et du procédé de fabrication de la membrane de rayonnement acoustique peuvent être conçues par l'homme du métier sans sortir du cadre de l'invention définie par les revendications. Il peut être prévu de réaliser la membrane par électroformage avec un autre métal que l'or.From the description which has just been made, several variants of the striking or musical watch provided with the acoustic radiation membrane, and of the method of manufacturing the acoustic radiation membrane can be designed by a person skilled in the art without depart from the scope of the invention defined by the claims. Provision may be made to make the membrane by electroforming with a metal other than gold.
Claims (16)
caractérisée en ce que la membrane (2) est configurée avec une paroi d'une épaisseur déterminée dans une zone active (11) dépendante de la masse de la lunette (3) liée à la glace (5) ou de la glace (5) seule pour avoir une fréquence f0 d'un premier mode de vibration, qui se situe à basse fréquence inférieure ou égale à 4 kHz selon l'équation f0 = (1/2π)·(k/m)1/2 où k est la raideur de la membrane (2), qui dépend de son épaisseur, et m est la masse de la lunette (3) liée à la glace (5) ou de la glace (5) seule.Watch (1) with ringing or musical device provided with at least one membrane (2) of acoustic radiation made of metallic material or amorphous metal, said membrane (2) being in the form of a wall loop of a certain thickness to be connected by a first border (23) to a middle part (4) of a watch case and by a second border (20) to a bezel (3) fixed to a watch glass (5) or directly to a watch glass (5), the bezel (3) linked to the crystal (5) or the crystal (5) being movable relative to the middle part (4) via the membrane (2) during the vibration of the membrane ( 2) following a sound generated by a striking mechanism of the watch in the watch case,
characterized in that the membrane (2) is configured with a wall of a determined thickness in an active area (11) dependent on the mass of the telescope (3) linked to the ice (5) or the ice (5) only to have a frequency f 0 of a first vibration mode, which is located at low frequency less than or equal to 4 kHz according to the equation f 0 = (1 / 2π) · (k / m) 1/2 where k is the stiffness of the membrane (2), which depends on its thickness, and m is the mass of the telescope (3) linked to the ice (5) or the ice (5) alone.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP18202869.6A EP3644132B1 (en) | 2018-10-26 | 2018-10-26 | Striking or musical watch with at least one acoustic radiation membrane, and method of manufacturing said membrane |
JP2019184901A JP6783367B2 (en) | 2018-10-26 | 2019-10-08 | A strike-carrying watch or musical-carrying watch with at least one acoustic radiation film, and a method of manufacturing an acoustic radiation film. |
US16/598,258 US11640142B2 (en) | 2018-10-26 | 2019-10-10 | Striking or musical watch provided with at least one acoustic radiating membrane and method for manufacturing the membrane |
CN201911014845.5A CN111103783B (en) | 2018-10-26 | 2019-10-24 | Watch with at least one acoustic radiating membrane for telling time or music and method for making the membrane |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP18202869.6A EP3644132B1 (en) | 2018-10-26 | 2018-10-26 | Striking or musical watch with at least one acoustic radiation membrane, and method of manufacturing said membrane |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3644132A1 true EP3644132A1 (en) | 2020-04-29 |
EP3644132B1 EP3644132B1 (en) | 2022-06-08 |
Family
ID=64051414
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18202869.6A Active EP3644132B1 (en) | 2018-10-26 | 2018-10-26 | Striking or musical watch with at least one acoustic radiation membrane, and method of manufacturing said membrane |
Country Status (4)
Country | Link |
---|---|
US (1) | US11640142B2 (en) |
EP (1) | EP3644132B1 (en) |
JP (1) | JP6783367B2 (en) |
CN (1) | CN111103783B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4113219A1 (en) * | 2021-06-29 | 2023-01-04 | Montres Breguet S.A. | Method for frequency tuning of an assembly of plates of a watch, and watch comprising the assembly of tuned plates |
Citations (4)
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EP0028429A1 (en) | 1979-11-02 | 1981-05-13 | Eta A.G. Ebauches-Fabrik | Watch with an electro-acoustic warning device |
US5932360A (en) * | 1997-06-06 | 1999-08-03 | Servometer Corporation | Hollow shell with internal baffle |
EP2409200B1 (en) | 2009-03-19 | 2014-04-23 | Rolex S.A. | Watch case |
CH708111B1 (en) * | 2008-04-28 | 2014-12-15 | Richemont Int Sa | Watch movement with a sound device. |
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JPS5717341Y2 (en) | 1977-06-21 | 1982-04-12 | ||
JPS6142151Y2 (en) | 1979-03-27 | 1986-11-29 | ||
DE69300119T2 (en) * | 1993-05-28 | 1995-10-19 | Walca Sa | Watch with waterproof rotating glass or waterproof rotating glass hoop unit. |
JPH08179061A (en) | 1994-12-20 | 1996-07-12 | Citizen Watch Co Ltd | Storage structure for acoustic device |
US5640133A (en) * | 1995-06-23 | 1997-06-17 | Cornell Research Foundation, Inc. | Capacitance based tunable micromechanical resonators |
DE29721955U1 (en) * | 1997-12-12 | 1999-04-15 | Junghans Uhren Gmbh, 78713 Schramberg | Wristwatch with an alarm clock |
JP5184880B2 (en) * | 2004-02-27 | 2013-04-17 | アトランティック・イナーシャル・システムズ・リミテッド | Accelerometer |
CH699146B1 (en) | 2004-10-08 | 2010-01-29 | Artisans Boitiers Sa | Control device for watch. |
JP4857886B2 (en) | 2005-06-24 | 2012-01-18 | セイコーエプソン株式会社 | Shock-resistant device for piezoelectric actuator and electronic device equipped with the same |
EP3404493B1 (en) | 2010-03-16 | 2021-09-01 | Montres Breguet S.A. | Chiming watch provided with an acoustic membrane |
EP2461219B1 (en) * | 2010-12-02 | 2020-10-14 | Montres Breguet SA | Acoustic membrane for a musical box or an alarm watch |
CH704673A2 (en) * | 2011-03-22 | 2012-09-28 | Montres Breguet Sa | Cup-shaped removable acoustic radiation membrane for musical/striking watch, has holding member engaging with inner stop member of bottom of case to limit bending of membrane following over/under pressure based on environmental conditions |
EP2881807B1 (en) * | 2013-12-09 | 2019-11-27 | Montres Breguet SA | Acoustic dispersion membrane for a musical watch |
EP3009895B1 (en) * | 2014-10-15 | 2017-06-28 | Montres Breguet SA | Musical or chiming watch provided with a sound-projecting arrangement |
EP3220210B1 (en) * | 2016-03-15 | 2020-05-06 | Montres Breguet S.A. | Chiming or musical timepiece, with resonant bezel |
EP3696618A1 (en) * | 2019-02-14 | 2020-08-19 | Montres Breguet S.A. | Chiming or musical watch with arrangement for guiding the acoustic waves |
-
2018
- 2018-10-26 EP EP18202869.6A patent/EP3644132B1/en active Active
-
2019
- 2019-10-08 JP JP2019184901A patent/JP6783367B2/en active Active
- 2019-10-10 US US16/598,258 patent/US11640142B2/en active Active
- 2019-10-24 CN CN201911014845.5A patent/CN111103783B/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0028429A1 (en) | 1979-11-02 | 1981-05-13 | Eta A.G. Ebauches-Fabrik | Watch with an electro-acoustic warning device |
US5932360A (en) * | 1997-06-06 | 1999-08-03 | Servometer Corporation | Hollow shell with internal baffle |
CH708111B1 (en) * | 2008-04-28 | 2014-12-15 | Richemont Int Sa | Watch movement with a sound device. |
EP2409200B1 (en) | 2009-03-19 | 2014-04-23 | Rolex S.A. | Watch case |
EP2738625B1 (en) | 2009-03-19 | 2015-08-12 | Rolex Sa | Timepiece case comprising a metal bellows |
Also Published As
Publication number | Publication date |
---|---|
JP6783367B2 (en) | 2020-11-11 |
US11640142B2 (en) | 2023-05-02 |
US20200133202A1 (en) | 2020-04-30 |
CN111103783A (en) | 2020-05-05 |
CN111103783B (en) | 2021-06-08 |
EP3644132B1 (en) | 2022-06-08 |
JP2020076749A (en) | 2020-05-21 |
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