EP3002749B1 - Keyboard for musical box - Google Patents

Keyboard for musical box Download PDF

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Publication number
EP3002749B1
EP3002749B1 EP14187634.2A EP14187634A EP3002749B1 EP 3002749 B1 EP3002749 B1 EP 3002749B1 EP 14187634 A EP14187634 A EP 14187634A EP 3002749 B1 EP3002749 B1 EP 3002749B1
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EP
European Patent Office
Prior art keywords
keyboard
blades
strips
musical
gpa
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.)
Active
Application number
EP14187634.2A
Other languages
German (de)
French (fr)
Other versions
EP3002749A1 (en
Inventor
Polychronis Karapatis (Nakis)
Younes Kadmiri
Davide Sarchi
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.)
Montres Breguet SA
Original Assignee
Montres Breguet SA
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 Montres Breguet SA filed Critical Montres Breguet SA
Priority to EP14187634.2A priority Critical patent/EP3002749B1/en
Priority to JP2015166532A priority patent/JP6155307B2/en
Priority to CN201510628078.2A priority patent/CN105489204B/en
Priority to US14/870,747 priority patent/US9373316B2/en
Publication of EP3002749A1 publication Critical patent/EP3002749A1/en
Priority to HK16111552.9A priority patent/HK1223449A1/en
Application granted granted Critical
Publication of EP3002749B1 publication Critical patent/EP3002749B1/en
Active legal-status Critical Current
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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10F—AUTOMATIC MUSICAL INSTRUMENTS
    • G10F1/00—Automatic musical instruments
    • G10F1/06—Musical boxes with plucked teeth, blades, or the like
    • 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
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K1/00—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs
    • G10K1/06—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs the resonating devices having the shape of a bell, plate, rod, or tube
    • G10K1/08—Details or accessories of general applicability
    • G10K1/10—Sounding members; Mounting thereof; Clappers or other strikers
    • 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
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10D—STRINGED MUSICAL INSTRUMENTS; WIND MUSICAL INSTRUMENTS; ACCORDIONS OR CONCERTINAS; PERCUSSION MUSICAL INSTRUMENTS; AEOLIAN HARPS; SINGING-FLAME MUSICAL INSTRUMENTS; MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR
    • G10D1/00—General design of stringed musical instruments
    • G10D1/04—Plucked or strummed string instruments, e.g. harps or lyres
    • G10D1/05—Plucked or strummed string instruments, e.g. harps or lyres with fret boards or fingerboards
    • G10D1/06—Mandolins
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10F—AUTOMATIC MUSICAL INSTRUMENTS
    • G10F5/00—Details or accessories

Definitions

  • the invention relates to the field of musical watches and small music boxes.
  • the ringing mechanism of music boxes consists of a keyboard fitted with several blades and a system for activating the blades of the keyboard, the activation system possibly being in the form of a rotating cylinder or a disc. turning.
  • the activation system possibly being in the form of a rotating cylinder or a disc. turning.
  • the material of the keyboard is chosen mainly on the basis of a criterion of manufacturability and resistance to wear and fatigue. Indeed, the blades of the keyboard are subjected to repeated elastic forces and must therefore be strong enough to have an acceptable lifespan.
  • the criterion of the activation energy of the blades must also be taken into account when manufacturing the keyboard blades. It is known that shorter blades require higher activation energy than long blades. Short blades are therefore subjected to greater elastic forces and must have better resistance to wear and fatigue.
  • An object of the present invention is to overcome all or part of the drawbacks mentioned above by providing a keyboard making it possible to respond simultaneously to the constraints of mechanical resistance and vibratory performance whatever the length of the blades.
  • Another object of the invention is to provide a keyboard making it possible to match the acoustic level of the low and high notes.
  • the invention also aims, at least in one particular embodiment, to propose a keyboard making it possible to limit the wear and deformation of the blades.
  • the invention also aims to provide a keyboard having a small footprint.
  • Yet another object of the invention is to provide a keyboard of simple design and economical to manufacture.
  • the invention relates to a keyboard comprising at least two parts, joined together so as to obtain a one-piece keyboard, a first part forming a first set of blades made of a first material so as to produce sounds in a first range of frequencies, and at least a second part forming a second set of blades made of a second material so as to produce sounds in a second range of frequencies.
  • such a bi-material keyboard makes it possible on the one hand to choose the appropriate material according to the mechanical resistance for the blades restoring the sounds of a first range of frequencies, typically high-pitched sounds, and on the other hand , to choose the appropriate material according to the activation energy necessary for the blades restoring the sounds of a second frequency range, typically low-pitched sounds.
  • a keyboard is thus obtained which has optimum performance for the reproduction of sounds over the range or ranges of frequencies desired for the production of the keyboard.
  • the invention also relates to a music box comprising a musical module provided with at least one keyboard in accordance with the invention and with an activation assembly for activating the reeds in order to produce music.
  • the invention also relates to a musical watch comprising a musical module fitted with at least one keyboard in accordance with the invention and an activation assembly for activating the blades in order to produce music.
  • a keyboard for a small-sized music box will now be described in the following with reference in conjunction to the figures 1, 2, 3 , 4a and 4b .
  • the invention relates to a keyboard 1 comprising at least two parts, joined together, made of at least two materials, a first part 10 forming a first set of blades 11,12,13,14 made of a first material M1 so as to produce sounds in a first frequency range, and at least a second part 20 forming a second set of blades 21,22,23,24 made of a second material M2 so as to produce sounds in a second frequency range.
  • the first range of frequencies can, for example, extend between 1600Hz and 20KHz, which makes it possible to reproduce high-pitched sounds.
  • the second frequency range can extend between 20Hz and 400Hz, which makes it possible to reproduce bass sounds. We can also consider the frequency range extending between 400Hz and 1600Hz to be able to reproduce the medium sounds.
  • the first material M1 has a Young's modulus comprised between 150Gpa and 250Gpa, a density comprised between 4000kg/m 3 and 10000kg/m 3 , a hardness greater than 300HV, and a rupture limit greater than 800MPa.
  • the second material M2 has a Young's modulus of between 70Gpa and 120Gpa, a density of between 14,000 kg/m 3 and 20,000 kg/m 3 , a hardness of less than 300HV, and a breaking point of less than 600MPa.
  • a material that meets these criteria is gold. Such a material allows the blades restoring the bass sounds to store a quantity of energy greater than or equal to 20 microwatts when activated. Of course, any other material meeting the criteria can be used to make the second set of blades 21,22,23,24.
  • the use of two different materials to restore the low notes and the high notes makes it possible to choose the material so that the activation energy of the blades restoring the high notes and low notes is relatively close.
  • the speed of sound in the second material M2 is at least 40% lower than the speed of sound in the first material M1 so as to limit the vibration transfer between the first part 10 and the second part 20.
  • the first part 10 and the second part 20 are joined together so as to obtain a one-piece keyboard by means of welding, brazing or embedding, or any other process known to the person skilled in the art making it possible to obtain a one-piece part.
  • Joining the two parts 10,20 in particular makes it possible to obtain correct positioning vis-à-vis the activation member, such as a disc or a cylinder. Joining the two parts also makes it possible to optimize the vibration transfer between the keyboard and the radiating components of a music box or a musical watch.
  • the keyboard can comprise a first part 10, a second part 20 and a third part 30 which can form a third set of blades 31, 32, each part being able to be made of a separate material.
  • a first part 10 a second part 20 and a third part 30 which can form a third set of blades 31, 32, each part being able to be made of a separate material.
  • those skilled in the art can vary the number of parts of the keyboard 1 to obtain the desired result without departing from the scope of the present invention.
  • the first part 10 and the second part 20 are made of the material M1 and are connected together by means of the third part 30 made of the material M2. According to this embodiment, the third part 30 is sandwiched between the first part 10 and the second part 20.
  • the first part 10 and the second part 20 are made of the material M2 and are connected together by means of the third part 30 made of the material M1.
  • the third part 30 is also sandwiched between the first part 10 and the second part 20.
  • the first part 10 is made of a first material M1
  • the second part 20 is made of a second material M2
  • the third part 30 is made of a third material M3.
  • the speeds of sound in the three materials M1, M2 and M3 are different from each other by at least 30% so as to limit the vibration transfer between the two parts.
  • the third material M3 used to make the third part 30 is chosen in such a way as to limit, or even prevent, the transfer of vibrations between the neighboring blades of the first and second parts 10, 20.
  • the third part 30 forming a connection between the first part 10 and the second part 20 can have blades 31, 32 so as to reproduce additional sounds.
  • the third part 30 may not have blades and only act as a connecting element between the first part 10 and the second part 20.
  • the first material M1 can be one of the following materials: steel, titanium, metallic glass, bronze or magnesium.
  • the second material M2 can be one of the following materials: gold, cast iron or palladium.
  • the third material M3 can be one of the following materials: platinum, brass, aluminum, metallized sapphire, Phynox or even Arcap.
  • the first part 10 can be made of gold, the second part 20 of steel and the third part 30 of brass.
  • a person skilled in the art can of course perform the combination he wishes to obtain the desired result without thereby departing from the scope of the present invention.
  • Each blade of each of the parts 10,20,30 can be rectilinear in shape with a rectangular or circular or other cross-section, which can be identical over the entire length of the blade.
  • the cross-section may also vary gradually or discontinuously along the length of each blade.
  • the length and thickness of each blade can also be of different dimensions in order to produce different notes.
  • Each of the blades of each of the parts 10, 20 and 30 can have a different width.
  • Each blade of the keyboard 1 is sized so as to generally produce a different note for each blade, when the blade is activated by a specific activation member of a musical module. However, provision may be made to have a pair of reeds capable of producing the same particular note.
  • the number of blades can vary on each of the 10,20,30 parts.
  • Each part 10,20,30 of the keyboard 1 can comprise an even or odd number of blades according to the needs of those skilled in the art to produce the keyboard 1 and reproduce the desired notes.
  • the invention also relates to a music box comprising a musical module provided with at least one keyboard 1 in accordance with the invention and an activation assembly, such as a disc or a cylinder provided with lugs, to activate the reeds in order to produce music.
  • an activation assembly such as a disc or a cylinder provided with lugs, to activate the reeds in order to produce music.
  • the invention also relates to a musical watch equipped with a musical module provided with at least one keyboard 1 in accordance with the invention and an activation assembly, such as a disk or a cylinder provided with lugs, for activate the reeds in order to produce music.
  • an activation assembly such as a disk or a cylinder provided with lugs, for activate the reeds in order to produce music.

Description

Domaine de l'inventionField of the invention

L'invention se rapporte au domaine des montres musicales et boites à musique de petite taille.The invention relates to the field of musical watches and small music boxes.

Arrière-plan de l'inventionBackground of the invention

Généralement, le mécanisme de sonnerie des boites à musique est constitué par un clavier muni de plusieurs lames et un système d'activation des lames du clavier, le système d'activation pouvant être sous la forme d'un cylindre tournant ou d'un disque tournant. Pour équiper une montre d'un tel mécanisme de sonnerie, il est nécessaire de réduire la taille des composants en prenant en compte leur résistance mécanique tout en conservant un son de bonne qualité.Generally, the ringing mechanism of music boxes consists of a keyboard fitted with several blades and a system for activating the blades of the keyboard, the activation system possibly being in the form of a rotating cylinder or a disc. turning. To equip a watch with such a striking mechanism, it is necessary to reduce the size of the components by taking into account their mechanical strength while maintaining good sound quality.

Actuellement, la matière du clavier est choisie principalement sur la base d'un critère de fabricabilité et de résistance à l'usure et à la fatigue. En effet, les lames du clavier sont soumises à des efforts élastiques répétés et doivent donc être assez résistantes pour avoir une durée de vie acceptable.Currently, the material of the keyboard is chosen mainly on the basis of a criterion of manufacturability and resistance to wear and fatigue. Indeed, the blades of the keyboard are subjected to repeated elastic forces and must therefore be strong enough to have an acceptable lifespan.

Le critère de l'énergie d'activation des lames doit aussi être pris en compte lors de la fabrication des lames du clavier. Il est connu que les lames les plus courtes nécessitent une énergie d'activation plus élevée que les lames longues. Les lames courtes sont donc soumises à des efforts élastique plus importants et doivent présenter une meilleure résistance à l'usure et à la fatigue.The criterion of the activation energy of the blades must also be taken into account when manufacturing the keyboard blades. It is known that shorter blades require higher activation energy than long blades. Short blades are therefore subjected to greater elastic forces and must have better resistance to wear and fatigue.

Les claviers de montres à sonnerie actuels présentent donc un inconvénient principal puisqu'un seul et même matériau est utilisé pour fabriquer les lames du clavier, ce qui implique que les fabricants doivent faire un compromis sur le choix du matériau pour réaliser les lames avec des performances vibratoires acceptables à la fois pour les lames courtes et les lames longues. Un tel compromis ne permet donc pas d'obtenir des résultats optimaux pour la restitution des sons aigus et graves. US2003/183063 divulgue une boîte à musique comprenant des générateurs de sons avec des boîtes résonnantes respectives faites de matériaux mutuellement différents les uns des autres.Current striking watch keyboards therefore have a main drawback since one and the same material is used to manufacture the blades of the keyboard, which implies that the manufacturers must make a compromise on the choice of material to make the blades with acceptable vibration performance for both short blades and long blades. Such a compromise therefore does not make it possible to obtain optimum results for the reproduction of high and low sounds. US2003/183063 discloses a music box comprising sound generators with respective resonant boxes made of materials mutually different from each other.

Résumé de l'inventionSummary of the invention

Un but de la présente invention est de pallier tout ou partie des inconvénients cités précédemment en fournissant un clavier permettant de répondre simultanément aux contraintes de résistance mécanique et de performance vibratoires quelle que soit la longueur des lames.An object of the present invention is to overcome all or part of the drawbacks mentioned above by providing a keyboard making it possible to respond simultaneously to the constraints of mechanical resistance and vibratory performance whatever the length of the blades.

L'invention a aussi pour but de fournir un clavier permettant d'appairer le niveau acoustique des notes graves et aigues.Another object of the invention is to provide a keyboard making it possible to match the acoustic level of the low and high notes.

L'invention a également pour but, au moins dans un mode de réalisation particulier, de proposer un clavier permettant de limiter l'usure et la déformation des lames.The invention also aims, at least in one particular embodiment, to propose a keyboard making it possible to limit the wear and deformation of the blades.

L'invention a également pour but de fournir un clavier présentant un faible encombrement.The invention also aims to provide a keyboard having a small footprint.

Encore un autre but de l'invention est de fournir un clavier de conception simple et économique à fabriquer.Yet another object of the invention is to provide a keyboard of simple design and economical to manufacture.

A cet effet, l'invention se rapporte à un clavier comprenant au moins deux parties, solidarisées entre elles de façon à obtenir un clavier monobloc, une première partie formant un premier ensemble de lames réalisées dans un premier matériau de manière à produire des sons dans une première plage de fréquences, et au moins une deuxième partie formant un deuxième ensemble de lames réalisées dans un deuxième matériau de manière à produire des sons dans une deuxième plage de fréquences.To this end, the invention relates to a keyboard comprising at least two parts, joined together so as to obtain a one-piece keyboard, a first part forming a first set of blades made of a first material so as to produce sounds in a first range of frequencies, and at least a second part forming a second set of blades made of a second material so as to produce sounds in a second range of frequencies.

Grâce à ces caractéristiques, un tel clavier bi matériau permet d'une part de choisir le matériau adéquat en fonction de la résistance mécanique pour les lames restituant les sons d'une première plage de fréquences, typiquement des sons aigus, et d'autre part, de choisir le matériau adéquat en fonction de l'énergie d'activation nécessaire pour les lames restituant les sons d'une deuxième plage de fréquences, typiquement des sons graves. On obtient ainsi un clavier qui présente des performances optimales pour la restitution des sons sur la ou les plages de fréquences désirées pour la réalisation du clavier.Thanks to these characteristics, such a bi-material keyboard makes it possible on the one hand to choose the appropriate material according to the mechanical resistance for the blades restoring the sounds of a first range of frequencies, typically high-pitched sounds, and on the other hand , to choose the appropriate material according to the activation energy necessary for the blades restoring the sounds of a second frequency range, typically low-pitched sounds. A keyboard is thus obtained which has optimum performance for the reproduction of sounds over the range or ranges of frequencies desired for the production of the keyboard.

Conformément à d'autres variantes avantageuses de l'invention :

  • le premier matériau a un module de Young compris entre 150GPa et 250GPa, une densité comprise entre 4000kg/m3 et 10000kg/m3, une dureté supérieure à 300HV, et une limite de rupture supérieure à 800MPa, ce qui permet d'avoir un matériau plus résistant ;
  • le deuxième matériau a un module de Young compris entre 70Gpa et 120Gpa, une densité comprise entre 14000kg/m3 et 20000kg/m3, une dureté inférieure à 300HV, une limite de rupture inférieure à 600MPa, ce qui permet d'avoir un matériau ayant une énergie d'activation plus élevée ;
  • la vitesse du son dans le deuxième matériau est au moins 40% inférieure à la vitesse du son dans le premier matériau de manière à limiter le transfert vibratoire entre les deux parties ;
  • la première partie et la deuxième partie sont solidarisées entre elles de façon à obtenir un clavier monobloc au moyen d'un soudage, d'un brasage ou d'un enchâssement de manière à optimiser le transfert vibratoire entre le clavier et les composants rayonnants ;
  • le clavier comprend au moins trois parties, dites première partie, deuxième partie et troisième partie ;
  • la première partie est fabriquée dans un premier matériau, la deuxième partie est fabriquée dans un deuxième matériau, et la troisième partie est fabriquée dans un troisième matériau, les vitesses du son dans les trois matériaux étant différentes entre elles d'au moins 30% de manière à limiter le transfert vibratoire entre les deux parties ;
  • le premier matériau est de l'acier ou du verre métallique, le deuxième matériau est de l'or ou de la fonte, et le troisième matériau est du platine, du laiton, de l'aluminium, du saphir métallisé, un alliage à base de cobalt tel que le Phynox ou encore un alliage cuivreux tel que l'Arcap;
  • l'énergie d'activation de chacune des lames est supérieure ou égale à 20 microwatts de manière à obtenir un rayonnement efficace.
In accordance with other advantageous variants of the invention:
  • the first material has a Young's modulus comprised between 150GPa and 250GPa, a density comprised between 4000kg/m 3 and 10000kg/m 3 , a hardness greater than 300HV, and a breaking limit greater than 800MPa, which makes it possible to have a stronger material;
  • the second material has a Young's modulus of between 70Gpa and 120Gpa, a density of between 14000kg/m 3 and 20000kg/m 3 , a hardness of less than 300HV, a breaking limit of less than 600MPa, which makes it possible to have a material having a higher activation energy;
  • the speed of sound in the second material is at least 40% lower than the speed of sound in the first material so as to limit the vibration transfer between the two parts;
  • the first part and the second part are joined together so as to obtain a one-piece keyboard by means of welding, brazing or embedding so as to optimize the vibration transfer between the keyboard and the radiating components;
  • the keyboard comprises at least three parts, called first part, second part and third part;
  • the first part is made of a first material, the second part is made of a second material, and the third part is made of a third material, the speeds of sound in the three materials being different from each other by at least 30% of so as to limit the vibration transfer between the two parts;
  • the first material is steel or metallic glass, the second material is gold or cast iron, and the third material is platinum, brass, aluminum, metallized sapphire, a cobalt-based alloy such as Phynox or even a copper alloy such as Arcap;
  • the activation energy of each of the blades is greater than or equal to 20 microwatts so as to obtain effective radiation.

L'invention concerne aussi une boîte à musique comprenant un module musical muni d'au moins un clavier conforme à l'invention et d'un ensemble d'activation pour activer les lames afin de produire de la musique.The invention also relates to a music box comprising a musical module provided with at least one keyboard in accordance with the invention and with an activation assembly for activating the reeds in order to produce music.

L'invention concerne également une montre musicale comprenant un module musical muni d'au moins un clavier conforme à l'invention et d'un ensemble d'activation pour activer les lames afin de produire de la musique.The invention also relates to a musical watch comprising a musical module fitted with at least one keyboard in accordance with the invention and an activation assembly for activating the blades in order to produce music.

Description sommaire des dessinsBrief description of the drawings

D'autres caractéristiques et avantages de l'invention apparaîtront plus clairement à la lecture de la description suivante d'un mode de réalisation particulier de l'invention, donné à titre de simple exemple illustratif et non limitatif, et des figures annexées, parmi lesquelles :

  • la figure 1 est une vue de dessus d'un clavier conforme à l'invention selon un premier mode de réalisation ;
  • la figure 2 est une vue en perspective d'un clavier conforme à l'invention selon un deuxième mode de réalisation ;
  • la figure 3 est une vue en perspective d'un clavier conforme à l'invention selon un troisième mode de réalisation ;
  • les figures 4a et 4b sont des vues en perspective d'un clavier conforme à l'invention selon un autre mode de réalisation.
Other characteristics and advantages of the invention will appear more clearly on reading the following description of a particular embodiment of the invention, given by way of simple illustrative and non-limiting example, and the appended figures, among which :
  • the figure 1 is a top view of a keyboard according to the invention according to a first embodiment;
  • the picture 2 is a perspective view of a keyboard according to the invention according to a second embodiment;
  • the picture 3 is a perspective view of a keyboard according to the invention according to a third embodiment;
  • them figures 4a and 4b are perspective views of a keyboard according to the invention according to another embodiment.

Description détaillée des modes de réalisation préférésDetailed Description of Preferred Embodiments

Un clavier pour boite à musique de petite taille va maintenant être décrit dans ce qui suit faisant référence conjointement aux figures 1, 2, 3, 4a et 4b.A keyboard for a small-sized music box will now be described in the following with reference in conjunction to the figures 1, 2, 3 , 4a and 4b .

L'invention concerne un clavier 1 comprenant au moins deux parties, solidarisées entre elles, fabriquées en au moins deux matériaux, une première partie 10 formant un premier ensemble de lames 11,12,13,14 réalisées dans un premier matériau M1 de manière à produire des sons dans une première plage de fréquences, et au moins une deuxième partie 20 formant un deuxième ensemble de lames 21,22,23,24 réalisées dans un deuxième matériau M2 de manière à produire des sons dans une deuxième plage de fréquences.The invention relates to a keyboard 1 comprising at least two parts, joined together, made of at least two materials, a first part 10 forming a first set of blades 11,12,13,14 made of a first material M1 so as to produce sounds in a first frequency range, and at least a second part 20 forming a second set of blades 21,22,23,24 made of a second material M2 so as to produce sounds in a second frequency range.

La première plage de fréquences peut, par exemple, s'étendre entre 1600Hz et 20KHz, ce qui permet de restituer les sons aigus. La deuxième plage de fréquences peut s'étendre entre 20Hz et 400Hz, ce qui permet de restituer les sons graves. On peut aussi envisager la plage de fréquence s'étendant entre 400Hz et 1600Hz pour pouvoir restituer les sons médiums.The first range of frequencies can, for example, extend between 1600Hz and 20KHz, which makes it possible to reproduce high-pitched sounds. The second frequency range can extend between 20Hz and 400Hz, which makes it possible to reproduce bass sounds. We can also consider the frequency range extending between 400Hz and 1600Hz to be able to reproduce the medium sounds.

Selon l'invention, le premier matériau M1 a un module de Young compris entre 150Gpa et 250Gpa, une densité comprise entre 4000kg/m3 et 10000kg/m3, une dureté supérieure à 300HV, et une limite de rupture supérieure à 800MPa.According to the invention, the first material M1 has a Young's modulus comprised between 150Gpa and 250Gpa, a density comprised between 4000kg/m 3 and 10000kg/m 3 , a hardness greater than 300HV, and a rupture limit greater than 800MPa.

Un exemple de matériau répondant à ces critères est l'acier. Un tel matériau permet de rendre les lames restituant les sons aigus plus résistantes mécaniquement. Bien évidemment, tout autre matériau répondant à ces critères peut être utilisé pour réaliser le premier ensemble de lames 11,12,13,14.An example of a material that meets these criteria is steel. Such a material makes it possible to make the blades restoring high-pitched sounds more mechanically resistant. Obviously, any other material meeting these criteria can be used to make the first set of blades 11,12,13,14.

Le deuxième matériau M2 a un module de Young compris entre 70Gpa et 120Gpa, une densité comprise entre 14000kg/m3 et 20000kg/m3, une dureté inférieure à 300HV, et une limite de rupture inférieure à 600MPa.The second material M2 has a Young's modulus of between 70Gpa and 120Gpa, a density of between 14,000 kg/m 3 and 20,000 kg/m 3 , a hardness of less than 300HV, and a breaking point of less than 600MPa.

Un exemple de matériau répondant à ces critères est l'or. Un tel matériau permet aux lames restituant les sons graves d'emmagasiner une quantité d'énergie supérieure ou égale à 20 microwatts lors de leur activation. Bien évidemment, tout autre matériau répondant à des critères peut être utilisé pour réaliser le deuxième ensemble de lames 21,22,23,24.An example of a material that meets these criteria is gold. Such a material allows the blades restoring the bass sounds to store a quantity of energy greater than or equal to 20 microwatts when activated. Of course, any other material meeting the criteria can be used to make the second set of blades 21,22,23,24.

Selon un aspect particulièrement avantageux, l'utilisation de deux matériaux différents pour restituer les notes graves et les notes aigues permet de choisir le matériau de manière que l'énergie d'activation des lames restituant les notes aigues et notes graves soit relativement proche.According to a particularly advantageous aspect, the use of two different materials to restore the low notes and the high notes makes it possible to choose the material so that the activation energy of the blades restoring the high notes and low notes is relatively close.

Selon l'invention, la vitesse du son dans le deuxième matériau M2 est au moins 40% inférieure à la vitesse du son dans le premier matériau M1 de manière à limiter le transfert vibratoire entre la première partie 10 et la deuxième partie 20.According to the invention, the speed of sound in the second material M2 is at least 40% lower than the speed of sound in the first material M1 so as to limit the vibration transfer between the first part 10 and the second part 20.

Selon l'invention, la première partie 10 et la deuxième partie 20 sont solidarisées entre elles de façon à obtenir un clavier monobloc au moyen d'un soudage, d'un brasage ou d'un enchâssement, ou tout autre procédé connu de l'homme du métier permettant d'obtenir une pièce monobloc.According to the invention, the first part 10 and the second part 20 are joined together so as to obtain a one-piece keyboard by means of welding, brazing or embedding, or any other process known to the person skilled in the art making it possible to obtain a one-piece part.

La solidarisation des deux parties 10,20 permet notamment d'obtenir un positionnement correct vis-à-vis de l'organe d'activation, tel qu'un disque ou un cylindre. La solidarisation des deux parties permet aussi d'optimiser le transfert vibratoire entre le clavier et les composants rayonnants d'une boîte à musique ou d'une montre musicale.Joining the two parts 10,20 in particular makes it possible to obtain correct positioning vis-à-vis the activation member, such as a disc or a cylinder. Joining the two parts also makes it possible to optimize the vibration transfer between the keyboard and the radiating components of a music box or a musical watch.

Selon un mode de réalisation particulier de l'invention, le clavier peut comprendre une première partie 10, une deuxième partie 20 et une troisième partie 30 pouvant former un troisième ensemble de lames 31,32, chaque partie pouvant être réalisée dans un matériau distinct. Bien évidemment, l'homme du métier pourra varier le nombre de parties du clavier 1 pour obtenir le résultat souhaité sans pour autant sortir du cadre de la présente invention.According to a particular embodiment of the invention, the keyboard can comprise a first part 10, a second part 20 and a third part 30 which can form a third set of blades 31, 32, each part being able to be made of a separate material. Of course, those skilled in the art can vary the number of parts of the keyboard 1 to obtain the desired result without departing from the scope of the present invention.

Selon un premier exemple donné à simple titre illustratif, et non limitatif, la première partie 10 et la deuxième partie 20 sont réalisées dans le matériau M1 et sont connectées entre elles au moyen de la troisième partie 30 réalisée dans le matériau M2. Selon ce mode de réalisation, la troisième partie 30 est prise en sandwich entre la première partie 10 et la deuxième partie 20.According to a first example given purely by way of illustration, and not limitation, the first part 10 and the second part 20 are made of the material M1 and are connected together by means of the third part 30 made of the material M2. According to this embodiment, the third part 30 is sandwiched between the first part 10 and the second part 20.

Selon un autre exemple, la première partie 10 et la deuxième partie 20 sont réalisées dans le matériau M2 et sont connectées entre elles au moyen de la troisième partie 30 réalisée dans le matériau M1. La troisième partie 30 est également prise en sandwich entre la première partie 10 et la deuxième partie 20.According to another example, the first part 10 and the second part 20 are made of the material M2 and are connected together by means of the third part 30 made of the material M1. The third part 30 is also sandwiched between the first part 10 and the second part 20.

Encore selon un autre exemple, illustré aux figures 4a et 4b, la première partie 10 est fabriquée dans un premier matériau M1, la deuxième partie 20 est fabriquée dans un deuxième matériau M2, et la troisième partie 30 est fabriquée dans un troisième matériau M3.Yet according to another example, illustrated in figures 4a and 4b , the first part 10 is made of a first material M1, the second part 20 is made of a second material M2, and the third part 30 is made of a third material M3.

Selon un aspect particulièrement avantageux de l'invention, les vitesses du son dans les trois matériaux M1, M2 et M3 sont différentes entre elles d'au moins 30% de manière à limiter le transfert vibratoire entre les deux parties. Un tel mode de réalisation permet de réaliser un clavier en trois parties, chacune des parties pouvant restituer des sons dans une plage de fréquences distincte.According to a particularly advantageous aspect of the invention, the speeds of sound in the three materials M1, M2 and M3 are different from each other by at least 30% so as to limit the vibration transfer between the two parts. Such an embodiment makes it possible to produce a keyboard in three parts, each of the parts being able to reproduce sounds in a distinct range of frequencies.

Avantageusement, le troisième matériau M3 utilisé pour réaliser la troisième partie 30 est choisi de telle façon à limiter, voire empêcher, le transfert des vibrations entre les lames voisines des première et deuxième parties 10, 20.Advantageously, the third material M3 used to make the third part 30 is chosen in such a way as to limit, or even prevent, the transfer of vibrations between the neighboring blades of the first and second parts 10, 20.

Selon un mode de réalisation de l'invention, visible à la figure 3a, la troisième partie 30 faisant liaison entre la première partie 10 et la deuxième partie 20 peut présenter des lames 31, 32 de façon à restituer des sons supplémentaires. Selon un autre mode de réalisation, visible à la figure 4b, la troisième partie 30 peut ne pas présenter de lames et faire uniquement office d'élément de liaison entre la première partie 10 et la deuxième partie 20.According to one embodiment of the invention, visible in FIG. 3a, the third part 30 forming a connection between the first part 10 and the second part 20 can have blades 31, 32 so as to reproduce additional sounds. According to another embodiment, visible at figure 4b , the third part 30 may not have blades and only act as a connecting element between the first part 10 and the second part 20.

Selon l'invention, le premier matériau M1 peut être l'un des matériaux suivants : l'acier, le titane, le verre métallique, le bronze ou le magnésium. Le deuxième matériau M2 peut être l'un des matériaux suivants : l'or, la fonte ou le palladium. Le troisième matériau M3 peut être l'un des matériaux suivants : le platine, le laiton, l'aluminium, le saphir métallisé, le Phynox ou encore l'Arcap.According to the invention, the first material M1 can be one of the following materials: steel, titanium, metallic glass, bronze or magnesium. The second material M2 can be one of the following materials: gold, cast iron or palladium. The third material M3 can be one of the following materials: platinum, brass, aluminum, metallized sapphire, Phynox or even Arcap.

Par exemple, la première partie 10 peut être réalisée en or, la deuxième partie 20 en acier et la troisième partie 30 en laiton. L'homme du métier peut bien évidemment effectuer la combinaison qu'il souhaite pour obtenir le résultat désiré sans pour autant sortir du cadre de la présente invention.For example, the first part 10 can be made of gold, the second part 20 of steel and the third part 30 of brass. A person skilled in the art can of course perform the combination he wishes to obtain the desired result without thereby departing from the scope of the present invention.

Chaque lame de chacune des parties 10,20,30 peut être de forme rectiligne avec une section transversale rectangulaire ou circulaire ou autre, qui peut être identique sur toute la longueur de la lame. La section transversale peut également varier progressivement ou de manière discontinue le long de la longueur de chaque lame. La longueur et l'épaisseur de chaque lame peuvent aussi être de dimensions différentes afin de produire des notes différentes. Chacune des lames de chacune des parties 10, 20 et 30 peut avoir une largeur différente.Each blade of each of the parts 10,20,30 can be rectilinear in shape with a rectangular or circular or other cross-section, which can be identical over the entire length of the blade. The cross-section may also vary gradually or discontinuously along the length of each blade. The length and thickness of each blade can also be of different dimensions in order to produce different notes. Each of the blades of each of the parts 10, 20 and 30 can have a different width.

Chaque lame du clavier 1 est dimensionnée de manière à produire généralement une note différente pour chaque lame, lorsque la lame est activée par un organe d'activation spécifique d'un module musical. Cependant, il peut être prévu d'avoir une paire de lames susceptibles de produire une même note particulière.Each blade of the keyboard 1 is sized so as to generally produce a different note for each blade, when the blade is activated by a specific activation member of a musical module. However, provision may be made to have a pair of reeds capable of producing the same particular note.

Comme on peut l'observer sur les figures 1 à 3, le nombre de lames peut varier sur chacune des parties 10,20,30. Chaque partie 10,20,30 du clavier 1 peut comprendre un nombre paire ou impaire de lames selon les besoins de l'homme du métier pour réaliser le clavier 1 et reproduire les notes souhaitées.As can be observed on the figures 1 to 3 , the number of blades can vary on each of the 10,20,30 parts. Each part 10,20,30 of the keyboard 1 can comprise an even or odd number of blades according to the needs of those skilled in the art to produce the keyboard 1 and reproduce the desired notes.

L'invention concerne aussi une boîte à musique comprenant un module musical muni d'au moins un clavier 1 conforme à l'invention et d'un ensemble d'activation, tel qu'un disque ou un cylindre muni d'ergots, pour activer les lames afin de produire de la musique.The invention also relates to a music box comprising a musical module provided with at least one keyboard 1 in accordance with the invention and an activation assembly, such as a disc or a cylinder provided with lugs, to activate the reeds in order to produce music.

L'invention concerne aussi une montre musicale équipée d'un module musical muni d'au moins un clavier 1 conforme à l'invention et d'un ensemble d'activation, tel qu'un disque ou un cylindre muni d'ergots, pour activer les lames afin de produire de la musique.The invention also relates to a musical watch equipped with a musical module provided with at least one keyboard 1 in accordance with the invention and an activation assembly, such as a disk or a cylinder provided with lugs, for activate the reeds in order to produce music.

Grâce à ces différents aspects de l'invention, on dispose d'un clavier de conception simple, permettant d'appairer le niveau acoustique des notes graves et aigues, tout en présentant une bonne résistance mécanique et de bonnes performances vibratoires.Thanks to these different aspects of the invention, there is a keyboard of simple design, making it possible to match the acoustic level of the low and high notes, while having good mechanical strength and good vibration performance.

Bien entendu, la présente invention ne se limite pas à l'exemple illustré et est susceptible de diverses variantes et modifications qui apparaîtront à l'homme de l'art. L'invention est définie par les revendications annexées.Of course, the present invention is not limited to the example illustrated and is susceptible to various variants and modifications which will become apparent to those skilled in the art. The invention is defined by the appended claims.

NOMENCLATURENOMENCLATURE

  • 1. Clavier,1. Keyboard,
  • 10. Première partie du clavier,10. First part of the keyboard,
  • 11,12,13. Lames de la première partie,11,12,13. Blades of the first part,
  • 20. Deuxième partie du clavier,20. Second part of the keyboard,
  • 21,22,23. Lames de la deuxième partie,21,22,23. Part two blades,
  • 30. Troisième partie du clavier30. Third part of the keyboard
  • 31,32. Lames de la troisième partie,31.32. Third party blades,
  • M1. Premier matériau,M1. first material,
  • M2. Deuxième matériau,M2. Second material,
  • M3. Troisième matériau.M3. Third material.

Claims (17)

  1. Keyboard (1) for a striking mechanism of a musical watch or music box, characterised in that the keyboard (1) includes at least two parts, joined to each other so as to obtain a one-piece keyboard, manufactured in at least two materials, a first part (10) forming a first set of strips (11, 12, 13, 14) made of a first material (M1) so as to produce sounds in a first frequency range, and at least a second part (20) forming a second set of strips (21, 22, 23, 24) made of a second material (M2) so as to produce sounds in a second frequency range.
  2. Keyboard (1) according to claim 1, wherein the first material (M1) has a Young's modulus of between 150 GPa and 250 GPa.
  3. Keyboard (1) according to claim 1 or 2, wherein the first material (M1) has a density of between 4000kg/m3 and 10000kg/m3.
  4. Keyboard (1) according to any of claims 1 to 3, wherein the first material (M1) has a hardness of more than 300 HV.
  5. Keyboard (1) according to any of claims 1 to 4, wherein the first material (M1) has a tensile strength above 800 MPa.
  6. Keyboard (1) according to any of claims 1 to 5, wherein the second material (M2) has a Young's modulus of between 70 GPa and 120 GPa.
  7. Keyboard (1) according to any of claims 1 to 6, wherein the second material (M2) has a density of between 14000kg/m3 and 20000kg/m3.
  8. Keyboard (1) according to any of claims 1 to 7, wherein the second material (M2) has a hardness of less than 300 HV.
  9. Keyboard (1) according to any of claims 1 to 8, wherein the second material (M2) has a tensile strength of less than 600 MPa.
  10. Keyboard (1) according to any of claims 1 to 9, wherein the speed of sound in the second material (M2) is at least 40% lower than the speed of sound in the first material (M1).
  11. Keyboard (1) according to any of claims 1 to 10, wherein the first part (10) and the second part (20) are joined to each other so as to obtain a one-piece keyboard (1) by means of a soldering, brazing or press fit operation.
  12. Keyboard (1) according to any of claims 1 to 10, including at least three parts, called the first part (10), second part (20) and third part (30).
  13. Keyboard according to claim 12, wherein the first part (10) is manufactured in a first material (M1), the second part (20) is manufactured in a second material (M2), and the third part (30) is manufactured in a third material (M3), the speeds of sound in the three materials M1, M2, M3 being different from each other by at least 30%.
  14. Keyboard according to claim 13, wherein the first material (M1) is steel or metallic glass, the second material (M2) is gold or cast iron, and the third material (M3) is platinum, brass, aluminium, metallized sapphire, Phynox or else Arcap.
  15. Keyboard (1) according to any of claims 1 to 14, wherein the activation energy of each of the strips (11, 12, 13, 14, 21, 22, 23, 24) is greater than or equal to 20 microwatts.
  16. Music box including a musical module provided with at least one keyboard (1) according to any of the preceding claims and with an activation assembly for activating the strips to produce music.
  17. Musical watch including a musical module provided with at least one keyboard (1) according to any of the preceding claims and with an activation assembly for activating the strips to produce music.
EP14187634.2A 2014-10-03 2014-10-03 Keyboard for musical box Active EP3002749B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP14187634.2A EP3002749B1 (en) 2014-10-03 2014-10-03 Keyboard for musical box
JP2015166532A JP6155307B2 (en) 2014-10-03 2015-08-26 Vibrating plate for music box
CN201510628078.2A CN105489204B (en) 2014-10-03 2015-09-28 Oscillating plate for music box
US14/870,747 US9373316B2 (en) 2014-10-03 2015-09-30 Vibration plate for a music box
HK16111552.9A HK1223449A1 (en) 2014-10-03 2016-10-04 Vibration plate for a music box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14187634.2A EP3002749B1 (en) 2014-10-03 2014-10-03 Keyboard for musical box

Publications (2)

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EP3002749A1 EP3002749A1 (en) 2016-04-06
EP3002749B1 true EP3002749B1 (en) 2022-11-30

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US (1) US9373316B2 (en)
EP (1) EP3002749B1 (en)
JP (1) JP6155307B2 (en)
CN (1) CN105489204B (en)
HK (1) HK1223449A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3657268A1 (en) * 2018-11-22 2020-05-27 Blancpain SA Resonant member for a chiming mechanism of a watch or a music box
EP3832399A1 (en) * 2019-12-06 2021-06-09 Blancpain SA Set of gongs for a striking mechanism of a watch

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US593761A (en) * 1897-11-16 Musical instrument
US346757A (en) * 1886-08-03 Paul lochmasst
US266826A (en) * 1882-10-31 Albeet jeanbenaud
JPS61119192U (en) * 1985-01-11 1986-07-28
JPH0328478Y2 (en) * 1986-01-23 1991-06-19
JPH046077Y2 (en) * 1986-05-07 1992-02-19
JP3517326B2 (en) * 1997-02-04 2004-04-12 リズム時計工業株式会社 Information disk and its output device
TW333638B (en) * 1996-04-30 1998-06-11 Phythm Watch Co Ltd Disk type music box and information disk therefor, and a mechanical clock equipped with such disk type music box
JP2003295859A (en) * 2002-04-02 2003-10-15 Yamaha Corp Playing device
CH704183A2 (en) * 2010-12-02 2012-06-15 Montres Breguet Sa Acoustic radiation membrane for e.g. music watch, has cavities or projecting portions formed in form of honeycomb, where shape and dimensions of cavities are adapted based on type of material as well as notes to be radiated by membrane
JP2011123083A (en) * 2011-02-04 2011-06-23 Montres Breguet Sa Musical module for watch movement

Also Published As

Publication number Publication date
CN105489204B (en) 2019-06-21
EP3002749A1 (en) 2016-04-06
US9373316B2 (en) 2016-06-21
HK1223449A1 (en) 2017-07-28
JP2016075895A (en) 2016-05-12
US20160098981A1 (en) 2016-04-07
CN105489204A (en) 2016-04-13
JP6155307B2 (en) 2017-06-28

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