EP2463732A1 - Chiming mechanism of a watch or a music box - Google Patents

Chiming mechanism of a watch or a music box Download PDF

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Publication number
EP2463732A1
EP2463732A1 EP10194574A EP10194574A EP2463732A1 EP 2463732 A1 EP2463732 A1 EP 2463732A1 EP 10194574 A EP10194574 A EP 10194574A EP 10194574 A EP10194574 A EP 10194574A EP 2463732 A1 EP2463732 A1 EP 2463732A1
Authority
EP
European Patent Office
Prior art keywords
magnetic
wheel
stamp
magnetic element
ringing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP10194574A
Other languages
German (de)
French (fr)
Other versions
EP2463732B1 (en
Inventor
Nakis Karapatis
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 EP10194574.9A priority Critical patent/EP2463732B1/en
Priority to CH02066/10A priority patent/CH704199A2/en
Priority to US13/313,207 priority patent/US8559277B2/en
Priority to CN201110410139.XA priority patent/CN102566406B/en
Priority to JP2011270914A priority patent/JP5211232B2/en
Publication of EP2463732A1 publication Critical patent/EP2463732A1/en
Application granted granted Critical
Publication of EP2463732B1 publication Critical patent/EP2463732B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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
    • 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
    • G04B23/00—Arrangements producing acoustic signals at preselected times
    • G04B23/02—Alarm clocks
    • G04B23/026—Hammer driving; hammers; devices with several hammers or sounding bodies; vibrators
    • 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
    • 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
    • G10K1/062—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 electrically operated
    • G10K1/066—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 electrically operated the sounding member being a tube, plate or rod
    • G10K1/067—Operating or striking mechanisms therefor

Definitions

  • the invention relates to a striking mechanism of a watch or a music box.
  • the mechanism is capable of generating one or more sounds to signal an alarm or minute repeats, or a piece of music in the case of a music box.
  • the striking mechanism mainly comprises at least one stamp attached to a stamp holder and an activation member of the stamp for vibrating it.
  • the stamp or stamps used are each constituted by a metal wire generally of circular shape and placed in a plane parallel to the dial of the watch.
  • the metal wire of each stamp is generally arranged around the movement, in the watch cage and above a plate on which the different parts of the movement are mounted.
  • One end or several ends of each stamp are fixed, for example by brazing, to a stamp holder integral with the plate, for example, which may be unique for all the stamps.
  • the other end of each stamp may be generally free.
  • the striking mechanism of the watch comprises at least one activation member of the stamp, which may be a hammer actuated at predetermined times.
  • the vibration of each stamp is produced by the impact of the corresponding hammer on the stamp especially close to the stamp holder.
  • Each hammer performs a partial rotation in the plane of the stamp (s) so as to strike the corresponding stamp and make him vibrate in his plan. Part of the vibration of the stamp is also transmitted to the plate by the stamp holder.
  • the mechanical impact between the hammer and the timbre of a traditional striking mechanism is difficult to control. It is the same for the optimization of the sound output, which is strongly limited in the audible frequency range, especially in the frequency range between 1 kHz and 4 kHz, but also between 4 kHz and 20 kHz. This is because the mechanical impact time of the hammer against the timbre is very short and most of the energy is transmitted to high frequency vibration modes higher than 4 kHz. Similarly, the mechanical shock activates almost all modes of vibration of the tone, without allowing a selection of activated modes.
  • the impact duration of the hammer against the stamp can not generally be increased by modifying the geometry, the inertia and the material of the parts involved, without also causing a significant decrease in impact energy.
  • the sound can not be prolonged without a repetition of mechanical shocks.
  • the mechanical shocks including the impact of the hammer against the stamp, can induce noise especially in the case of double impact, and cause wear of the stamp, which is a number of disadvantages.
  • the invention therefore aims to overcome the disadvantages of the state of the art by providing a striking mechanism of a watch or a music box, which uses a new principle for the generation of one or more sounds at least one stamp without direct mechanical contact with a tone activation member in a ring mode.
  • the invention relates to a striking mechanism of a watch or a music box cited above, which comprises the features defined in the independent claim 1.
  • An advantage of the striking mechanism according to the invention lies in the fact that the patch can be activated by means of a magnetic arrangement without direct mechanical contact between the activation member and the patch. It can be provided for the magnetic arrangement to provide the stamp with at least one fixed permanent magnet, and the activation member, which can be realized in the form of a wheel, with at least one movable permanent magnet. . Depending on the rotation of the wheel, the moving permanent magnet comes close to and opposite the fixed permanent magnet, which may preferably be of opposite magnetization polarity. Once the moving permanent magnet comes opposite the fixed permanent magnet, a repulsive force is generated, which activates the tone to make it vibrate during rotation of the wheel.
  • the activation member is a magnetic wheel capable of being rotated about an axis, which may be perpendicular to the plane or to the rectilinear portion of the patch, or disposed at an angle to the plane or to the the rectilinear portion of the stamp different from 90 °.
  • the stamp activation wheel may comprise a plurality of moving permanent micro-magnets, which are arranged regularly or irregularly around the periphery of the activation wheel or several permanently magnetized parts of the wheel of ferromagnetic material.
  • the speed of rotation of the wheel is capable of determining the vibration frequency of the stamp carrying the fixed permanent magnet, which is preferably of magnetic polarity opposite to each moving micro-magnet coming opposite the fixed permanent magnet.
  • the magnetic arrangement for vibrating the stamp by the wheel-shaped activation member without direct mechanical contact it is possible to select the vibration modes of the stamp, which are desired in the ring mode.
  • a pure sound of the vibrating tone can be prolonged with discretion in time, if the speed of rotation of the activation wheel is kept constant at a determined value. Pure sound
  • the tone can be selected in the audible frequency range, in particular between 1 kHz and 4 kHz.
  • a magnetic self-regulation of the speed of rotation of the striking mechanism can be obtained. It is also possible to provide the striking mechanism with timbres shorter than a traditional ringing mechanism. With such an activation wheel equipped with a certain number of permanent magnets, it is no longer necessary to activate said stamp by means of a conventional hammer. In addition, any parasitic noise related to any mechanical shock, as well as multiple pulses and their interference on the vibration of the tone, are eliminated.
  • Several magnetic wheels can also activate the tone according to different selected vibration modes depending on the different rotation speed of each wheel and the number of micro-magnets that each wheel comprises. Alternating polarity magnets can also be placed on the wheel to maximize energy transfer to the patch.
  • the stamp may be equipped with one or more magnets, which have the same polarity as the magnets of the wheel, when they come opposite the magnets of the stamp.
  • the stamp magnets are attracted to those of the rotating wheel.
  • a force of attraction of the stamp magnets is generated periodically.
  • the stamp if the stamp comes into contact with the wheel, the stamp can be treated on the surface to eliminate noise during contact with the wheel.
  • a striking mechanism 1 especially for a watch.
  • This striking mechanism comprises first of all a stamp 11, which is connected for example to one of its ends to a stamp holder 12, while the other end is free movement.
  • the stamp holder can be preferably fixed on a plate not shown by a movement of the watch, but it can also be considered to fix it on an inner part, such as the middle part of the watch case.
  • the striking mechanism further comprises an activation member 2 of the stamp, which may be in the form of an activation wheel rotatably mounted about an axis of rotation 3, which may preferably be mounted on the watch plate.
  • the patch and the activation member comprise a magnetic arrangement as will be explained hereinafter. This makes it possible to vibrate the patch 11 without mechanical contact with the activation member for the generation of one or more sounds, when the activation member is turned on in a ringing mode.
  • the stamp 11 can be made in the form of a rectilinear portion or a circle or rectangular or any other geometric shape.
  • the stamp can be made for example by means of a wire, which can be in a ferromagnetic material (iron, nickel, steel or cobalt), or also in a precious metal or metal glass.
  • the rectilinear portion of the stamp may extend parallel to the plate and the dial of the not shown watch.
  • the cross section of the stamp 11 may define a rectangle or preferably a disc of diameter less than 0.8 mm.
  • the patch comprises at least one first magnetic element 13 disposed on an intermediate portion of its length.
  • This first magnetic element 13 is preferably a fixed permanent magnet 13.
  • This fixed permanent magnet may advantageously be a micro-magnet.
  • This micro-magnet can be attached to the stamp by gluing or brazing or inserted into a housing made of the stamp material. It may also be provided to fix two parts of the stamp on each side of the micro-magnet solder.
  • This micro-magnet of the stamp can also be produced directly in the stamp material, which must in this case be ferromagnetic, by a well-known magnetization operation.
  • the activation member in the form of an activation wheel 2 also comprises at least a second magnetic element 4 disposed at the periphery of the wheel.
  • This second magnetic element 4 is disposed on the wheel 2 to be able to generate a magnetic field of opposite polarity to the magnetic field generated by the first magnetic element 13, when the second magnetic element 4 comes close to and opposite the first magnetic element in a mode of ringtone.
  • This second magnetic element 4 is a mobile permanent magnet, which may advantageously be a moving micro-magnet.
  • the activation wheel 2 comprises a plurality of micro-magnets disposed at the periphery of the wheel.
  • These mobile micro-magnets 4 are preferably distributed regularly around the periphery of the wheel, each being equivalent in size or different from the fixed micro-magnet 13 of the patch 11.
  • Each moving micro-magnet is preferably disposed at an equal distance from the center of the wheel. activation wheel, and slightly protruding or flush with respect to the peripheral edge of said wheel. It can be provided, for example, with a number N of moving micro-magnets, for example 12 micro-magnets regularly distributed at an angular distance of 30 °.
  • Each moving micro-magnet may have the same magnetization value, but it may also be envisaged that this magnetization value is not equal for each moving micro-magnet.
  • These mobile micro-magnets 4 can be fixed at the periphery of the activation wheel 2 by bonding or brazing or be inserted into a housing made of the wheel material. These mobile micro-magnets 4 can also be made directly in the wheel material by a well-known local magnetization operation. However, the material must in this case be ferromagnetic.
  • the mobile micro-magnets 4 may each come successively close to and opposite the fixed micro-magnet 13 of the patch with a magnetic polarity opposite the fixed micro-magnet 13, during the rotation of the wheel in the ring mode. It can be expected that the mobile micro-magnets are arranged on the wheel to have their North Pole directed towards the outside of the wheel and their South Pole directed towards the center of the wheel. Under these conditions, the north pole of the fixed micro-magnet 13 of the patch is directed towards the center of the activation wheel. However, it can also be considered the opposite with the South poles of the mobile micro-magnets directed outwardly to be able respectively to face the South pole of the fixed micro-magnet 13 of the stamp.
  • a maximum magnetic repulsion force is generated when each micro-magnet mobile is exactly opposite the fixed micro-magnet 13 at a distance that can be of the order of 5 microns or slightly lower or higher. This distance can be the same for each mobile micro-magnet.
  • each movable micro-magnet of the wheel coming opposite the micro-magnet fixed stamp is accentuated as the 4th power of the distance in local dipole approximation (so if the magnets are small relative to their distance).
  • the repulsion becomes 16 times greater, when the distance separating the two micro-magnets is divided by two. If one of the moving micro-magnets 4 approaches at a distance, for example close to 1 ⁇ m, to make the tone vibrate, the magnetic force can be of the order of 1 N.
  • the minimum distance is normally separating each mobile micro-magnet 4 facing the fixed micro-magnet 13, during the rotation of the activation wheel, may be of the order of 5 microns. This distance may also be slightly smaller or greater so as to generate a continuous and sufficient vibration of the tone.
  • These permanent micro-magnets can be made with a size of 1 mm 3 or less, generating a magnetic field less than 1200 Gauss.
  • the frequency of variation of the magnetic repulsion force is transferred mainly to this natural frequency as a function of the selection of the rotational speed of the activation wheel 2.
  • the tone remains in vibration at a certain speed. specific natural frequency without any damping of the sound produced.
  • the intensity of the sound can also be adjusted by moving the magnetic wheel 2 closer to or closer to the patch, which increases or decreases the distance separating each moving micro-magnet 4 coming opposite the fixed micro-magnet 13 of the patch 11.
  • the generation of a vibration of the stamp 11 by periodic magnetic pulses any parasitic noise due to mechanical shocks is eliminated.
  • the rotation speed of the activation wheel it may be envisaged to use a standard method of braking, or a method of braking by eddy currents, or a self-regulation of the wheel-stamp assembly by a magnetic exhaust mechanism.
  • the magnetic repulsion which induces the vibration of the patch 11, can also make it possible to regulate the speed of rotation of the activation wheel 2, if this wheel has an inertia comparable to the inertia of the patch.
  • the patch 11 and the activation wheel 2 with their magnetic elements 4, 13 may be sized to simultaneously set the rotational speed of the activation wheel and the vibration frequencies of the patch 11.
  • the patch 11 may also comprise more than one first magnetic element in the form of a fixed permanent magnet or be magnetized over its entire length, if it is made of a ferromagnetic material.
  • Each magnetic wheel comprises an equivalent or different number of micro-magnets for each wheel with a magnetization value different or equal to the micro-magnets on the activation wheels.
  • the activation wheels may have axes of rotation parallel or arranged at an angle relative to each other. The activation wheels can be rotated at different rotational speeds and also at different times in a ringing mode.
  • the repulsion force generated at the level of the fixed micro-magnet 13 of the patch 11 varies periodically and differently depending on the the rotation of one or the other of the rotating activation wheels. It can be selected that the timbre vibrates at several specific eigenfrequencies according to the number of magnetic wheels 2 rotated in the ring mode.
  • the vibration modes of the tone can be selected in the preferred frequency range between 1 kHz and 4 kHz.
  • the micro-magnets which are arranged on the wheel and the stamp, have a polarity, which is consistent. This induces an attraction of a movable magnet of the wheel facing at least one fixed magnet of the stamp.
  • the stamp is put in tension, when at least one fixed micro-magnet of the stamp is facing at least one micro-magnet of the rotating wheel.
  • the tone is released when this moving micro-magnet of the wheel moves away.
  • a periodic and continuous energy transfer exists between the wheel and the patch. Shocks between wheel and stamp are not excluded, however, which requires a treatment of the surface of the stamp to avoid noise and wear of contact.
  • FIG 2 it is represented the graph of the force acting on the timbre in time for a mechanical shock when striking the hammer against the stamp for a traditional ringing mechanism and for one or more magnetic pulses of a striking mechanism according to the 'invention.
  • the curve related to the mechanical shock is shown in broken lines, while the curve related to the periodic magnetic repulsion force of the rotating magnetic wheel is shown in solid lines.
  • the stamp is dimensioned with a length L equal to 5 cm.
  • the rotation speed of the magnetic activation wheel is fixed at 200 rad / s and the number N of mobile micro-magnets of the wheel is equal to 36.
  • the distance between the stamp and the wheel is similar of 10 ⁇ m.
  • the mechanical pulse of the traditional ringing mechanism has a very short duration of the order of 30 microseconds, while for the magnetic wheel-stamp assembly, it is possible to produce a practically periodic repulsion force of selected duration. In this case, it has been chosen that the wheel rotates for a period of 0.01 s.
  • the profile of the magnetic pulses is nearly square because the magnetic repulsion force is substantially constant, if the wheel is in an angular range of 3 ° around the angular position corresponding to the maximum repulsion force.
  • FIG. 3 a comparative graph of the temporal evolution at the free end of the vibration stamp for the magnetic wheel-stamp assembly and for a traditional mechanical shock is shown.
  • the dashed curve corresponds to periodic magnetic pulses, while the curve in solid lines corresponds to at least one mechanical shock. Note for the curve in dashed lines, the periodicity of the vibration of the timbre produced by the magnetic pulses generated by the rotating magnetic wheel.
  • the amplitude of the normalized partials is shown following a fast Fourier transform as a function of the oscillation frequency of the patch, for a traditional striking mechanism and for a striking mechanism according to the invention.
  • the vibrations of the timbre are composed of partials, which are produced either by the mechanical shock of the timbre, or by the periodic magnetic pulses.
  • the dashed curve corresponds to periodic magnetic pulses, while the curve in solid lines corresponds to at least one mechanical shock.
  • the energy is transferred mainly to the 1 kHz vibration mode, which represents 65% of the total energy, while the 20% of the energy is transferred to the lower frequency modes. . Since the rotational speed of the magnetic wheel has been set to vibrate the tone primarily at the frequency of 1 kHz, most of the energy is relatively well transferred to this 1 kHz vibration frequency. This is totally different from the vibration modes following a mechanical shock, which we observe several peaks between 1 kHz and 20 kHz, and above. This shows that the energy transfer in at least one vibration mode of the low frequency tone is maximized with the magnetic arrangement of the striking mechanism of the invention. Any unwanted noise is also eliminated.
  • each coil may also be arranged to be disconnected from the DC source in a rest mode of the striking mechanism.
  • a middle portion of the stamp may be attached to a stamp holder integral with the plate or the middle part of the watch.
  • the striking mechanism may comprise a plurality of timbres each activated by a respective magnetic activation wheel. Depending on the number of timbres used, they can constitute a keyboard for the generation of musical notes by rotating each magnetic wheel at specific times.
  • the moving micro-magnets of the activation wheel may be unevenly distributed around the periphery of the wheel and with a different magnetization value for certain micro-magnets.
  • These mobile micro-magnets can be distributed around the periphery of the wheel, such that certain mobile micro-magnets are at a different distance from the center of the wheel of the other mobile micro-magnets.
  • the magnetic polarization direction of the micro-magnets of each magnetic wheel may alternatively be different to ensure a combination of the force of repulsion and attraction force during rotation of the magnetic wheel. It can also be provided a combination of a magnetic wheel and a permanent magnet hammer to magnetically vibrate at different times the stamps or the bell mechanism.
  • the axis of rotation of the magnetic activation wheel may also be arranged parallel to the rectilinear portion of the fixed permanent magnet stamp or at a predetermined angle relative to the rectilinear portion of the stamp.
  • the movable permanent magnet of the activation member may be provided to be periodically moved rectilinearly towards the fixed permanent magnet of the patch or in the form of a pendulum with a determined oscillation frequency.

Abstract

The mechanism (1) has magnetic elements (13, 4) e.g. fixed and movable permanent magnets such as fixed and movable micro magnets, arranged in a part of a patch (11) and on an activating component (2) e.g. magnetic wheel, respectively. The component is turned on in a ringing mode such that one of the elements is repeatedly close to and opposite the other element arranged to generate magnetic field of polarity opposite to magnetic field generated by the former element opposite the latter element, to allow the patch to vibrate by repetitive variation of magnetic repulsion force of the elements.

Description

L'invention concerne un mécanisme de sonnerie d'une montre ou d'une boîte à musique. Ledit mécanisme est susceptible de générer un ou plusieurs sons pour signaler une alarme ou des répétitions minutes, ou un morceau de musique dans le cas d'une boîte à musique. Le mécanisme de sonnerie comprend principalement au moins un timbre fixé à un porte-timbre et un organe d'activation du timbre pour le mettre en vibration.The invention relates to a striking mechanism of a watch or a music box. The mechanism is capable of generating one or more sounds to signal an alarm or minute repeats, or a piece of music in the case of a music box. The striking mechanism mainly comprises at least one stamp attached to a stamp holder and an activation member of the stamp for vibrating it.

Dans le domaine de l'horlogerie, une architecture traditionnelle est utilisée pour réaliser des mouvements, qui sont munis de mécanismes de sonnerie, tels que des alarmes ou des répétitions minutes. Dans ces réalisations, le ou les timbres utilisés sont constitués chacun par un fil métallique généralement de forme circulaire et placé dans un plan parallèle au cadran de la montre. Le fil métallique de chaque timbre est généralement disposé autour du mouvement, dans la cage de la montre et au-dessus d'une platine sur laquelle les différentes parties du mouvement sont montées. Une extrémité ou plusieurs extrémités de chaque timbre sont fixées, par exemple par brasure, à un porte-timbre solidaire de la platine, par exemple, qui peut être unique pour tous les timbres. L'autre extrémité de chaque timbre peut être généralement libre.In the field of watchmaking, a traditional architecture is used to perform movements, which are equipped with ringing mechanisms, such as alarms or minute repetitions. In these embodiments, the stamp or stamps used are each constituted by a metal wire generally of circular shape and placed in a plane parallel to the dial of the watch. The metal wire of each stamp is generally arranged around the movement, in the watch cage and above a plate on which the different parts of the movement are mounted. One end or several ends of each stamp are fixed, for example by brazing, to a stamp holder integral with the plate, for example, which may be unique for all the stamps. The other end of each stamp may be generally free.

Le mécanisme de sonnerie de la montre comprend au moins un organe d'activation du timbre, qui peut être un marteau actionné à des moments prédéterminés. Dans ce cas, la vibration de chaque timbre est produite par l'impact du marteau correspondant sur le timbre notamment à proximité du porte-timbre. Chaque marteau effectue une rotation partielle dans le plan du ou des timbres de façon à frapper le timbre correspondant et à le faire vibrer dans son plan. Une partie de la vibration du timbre est aussi transmise à la platine par le porte-timbre.The striking mechanism of the watch comprises at least one activation member of the stamp, which may be a hammer actuated at predetermined times. In this case, the vibration of each stamp is produced by the impact of the corresponding hammer on the stamp especially close to the stamp holder. Each hammer performs a partial rotation in the plane of the stamp (s) so as to strike the corresponding stamp and make him vibrate in his plan. Part of the vibration of the stamp is also transmitted to the plate by the stamp holder.

L'impact mécanique entre le marteau et le timbre d'un mécanisme de sonnerie traditionnel, est difficilement maîtrisable. Il en est de même pour l'optimisation du rendement sonore, qui est fortement limitée dans l'intervalle de fréquences audibles, notamment dans la gamme de fréquences entre 1 kHz et 4 kHz, mais également entre 4 kHz et 20 kHz. Ceci provient du fait que la durée d'impact mécanique du marteau contre le timbre est très courte et la majeure partie de l'énergie est transmise aux modes de vibration à haute fréquence supérieure à 4 kHz. De même, le choc mécanique active à peu près tous les modes de vibration du timbre, sans permettre une sélection des modes activés. La durée d'impact du marteau contre le timbre ne peut généralement pas être augmentée en modifiant la géométrie, l'inertie et la matière des pièces en jeu, sans provoquer aussi une diminution sensible de l'énergie d'impact. A cause de l'amortissement interne et du rayonnement acoustique, le son ne peut pas être prolongé sans avoir une répétition des chocs mécaniques. De plus, les chocs mécaniques, notamment les impacts du marteau contre le timbre, peuvent induire des bruits parasites notamment en cas de double impact, et provoquer l'usure du timbre, ce qui constitue plusieurs inconvénients.The mechanical impact between the hammer and the timbre of a traditional striking mechanism is difficult to control. It is the same for the optimization of the sound output, which is strongly limited in the audible frequency range, especially in the frequency range between 1 kHz and 4 kHz, but also between 4 kHz and 20 kHz. This is because the mechanical impact time of the hammer against the timbre is very short and most of the energy is transmitted to high frequency vibration modes higher than 4 kHz. Similarly, the mechanical shock activates almost all modes of vibration of the tone, without allowing a selection of activated modes. The impact duration of the hammer against the stamp can not generally be increased by modifying the geometry, the inertia and the material of the parts involved, without also causing a significant decrease in impact energy. Due to the internal damping and acoustic radiation, the sound can not be prolonged without a repetition of mechanical shocks. In addition, the mechanical shocks, including the impact of the hammer against the stamp, can induce noise especially in the case of double impact, and cause wear of the stamp, which is a number of disadvantages.

L'invention a donc pour but de pallier aux inconvénients de l'état de la technique en fournissant un mécanisme de sonnerie d'une montre ou d'une boîte à musique, qui utilise un nouveau principe pour la génération d'un ou plusieurs sons d'au moins un timbre sans contact mécanique direct avec un organe d'activation du timbre dans un mode de sonnerie.The invention therefore aims to overcome the disadvantages of the state of the art by providing a striking mechanism of a watch or a music box, which uses a new principle for the generation of one or more sounds at least one stamp without direct mechanical contact with a tone activation member in a ring mode.

A cet effet, l'invention concerne un mécanisme de sonnerie d'une montre ou d'une boîte à musique cité ci-devant, qui comprend les caractéristiques définies dans la revendication indépendante 1.To this end, the invention relates to a striking mechanism of a watch or a music box cited above, which comprises the features defined in the independent claim 1.

Des formes d'exécution particulières du mécanisme de sonnerie de la montre ou de la boîte à musique sont définies dans les revendications dépendantes 2 à 18.Particular embodiments of the striking mechanism of the watch or the music box are defined in the dependent claims 2 to 18.

Un avantage du mécanisme de sonnerie selon l'invention réside dans le fait que le timbre peut être activé par l'intermédiaire d'un agencement magnétique sans contact mécanique direct entre l'organe d'activation et le timbre. Il peut être prévu pour l'agencement magnétique de munir le timbre d'au moins un aimant permanent fixe, et l'organe d'activation, qui peut être réalisé sous la forme d'une roue, d'au moins un aimant permanent mobile. En fonction de la rotation de la roue, l'aimant permanent mobile vient à proximité et en regard de l'aimant permanent fixe, qui peut être de préférence de polarité de magnétisation opposée. Une fois que l'aimant permanent mobile vient en regard de l'aimant permanent fixe une force de répulsion est générée, ce qui permet d'activer le timbre pour le mettre en vibration lors de la rotation de la roue.An advantage of the striking mechanism according to the invention lies in the fact that the patch can be activated by means of a magnetic arrangement without direct mechanical contact between the activation member and the patch. It can be provided for the magnetic arrangement to provide the stamp with at least one fixed permanent magnet, and the activation member, which can be realized in the form of a wheel, with at least one movable permanent magnet. . Depending on the rotation of the wheel, the moving permanent magnet comes close to and opposite the fixed permanent magnet, which may preferably be of opposite magnetization polarity. Once the moving permanent magnet comes opposite the fixed permanent magnet, a repulsive force is generated, which activates the tone to make it vibrate during rotation of the wheel.

Avantageusement, l'organe d'activation est une roue magnétique susceptible d'être mise en rotation autour d'un axe, qui peut être perpendiculaire au plan ou à la portion rectiligne du timbre, ou disposé selon un angle par rapport au plan ou à la portion rectiligne du timbre différent de 90°. La roue d'activation du timbre peut comprendre plusieurs micro-aimants permanents mobiles, qui sont disposés régulièrement ou irrégulièrement en périphérie de la roue d'activation ou plusieurs parties magnétisées de manière permanente de la roue en matériau ferromagnétique. La vitesse de rotation de la roue est capable de déterminer la fréquence de vibration du timbre portant l'aimant permanent fixe, qui est de préférence de polarité magnétique opposée à chaque micro-aimant mobile venant en regard de l'aimant permanent fixe.Advantageously, the activation member is a magnetic wheel capable of being rotated about an axis, which may be perpendicular to the plane or to the rectilinear portion of the patch, or disposed at an angle to the plane or to the the rectilinear portion of the stamp different from 90 °. The stamp activation wheel may comprise a plurality of moving permanent micro-magnets, which are arranged regularly or irregularly around the periphery of the activation wheel or several permanently magnetized parts of the wheel of ferromagnetic material. The speed of rotation of the wheel is capable of determining the vibration frequency of the stamp carrying the fixed permanent magnet, which is preferably of magnetic polarity opposite to each moving micro-magnet coming opposite the fixed permanent magnet.

Grâce à l'agencement magnétique pour mettre en vibration le timbre par l'organe d'activation en forme de roue sans contact mécanique direct, il est possible de sélectionner les modes de vibration du timbre, qui sont désirés dans le mode de sonnerie. Un son pur du timbre en vibration peut être prolongé à discrétion dans le temps, si la vitesse de rotation de la roue d'activation est maintenue constante à une valeur déterminée. Le son pur du timbre peut être sélectionné dans la gamme de fréquences audibles notamment entre 1 kHz et 4 kHz.Thanks to the magnetic arrangement for vibrating the stamp by the wheel-shaped activation member without direct mechanical contact, it is possible to select the vibration modes of the stamp, which are desired in the ring mode. A pure sound of the vibrating tone can be prolonged with discretion in time, if the speed of rotation of the activation wheel is kept constant at a determined value. Pure sound The tone can be selected in the audible frequency range, in particular between 1 kHz and 4 kHz.

Avantageusement, une autorégulation magnétique de la vitesse de rotation du mécanisme de sonnerie peut être obtenue. Il est aussi possible de munir le mécanisme de sonnerie de timbres plus courts qu'un mécanisme de sonnerie traditionnel. Avec une telle roue d'activation équipée d'un certain nombre d'aimants permanents, il n'est plus nécessaire d'activer ledit timbre par l'intermédiaire d'un marteau conventionnel. De plus, tout bruit parasite lié à tout choc mécanique, ainsi que les impulsions multiples et leur interférence sur la vibration du timbre, sont éliminés. Plusieurs roues magnétiques peuvent aussi activer le timbre selon des modes de vibration sélectionnés différents en fonction de la vitesse de rotation différente de chaque roue et du nombre de micro-aimants que comprend chaque roue. Des aimants de polarité alternée peuvent également être placés sur la roue pour maximiser le transfert d'énergie au timbre.Advantageously, a magnetic self-regulation of the speed of rotation of the striking mechanism can be obtained. It is also possible to provide the striking mechanism with timbres shorter than a traditional ringing mechanism. With such an activation wheel equipped with a certain number of permanent magnets, it is no longer necessary to activate said stamp by means of a conventional hammer. In addition, any parasitic noise related to any mechanical shock, as well as multiple pulses and their interference on the vibration of the tone, are eliminated. Several magnetic wheels can also activate the tone according to different selected vibration modes depending on the different rotation speed of each wheel and the number of micro-magnets that each wheel comprises. Alternating polarity magnets can also be placed on the wheel to maximize energy transfer to the patch.

Avantageusement, le timbre peut être équipé d'un ou plusieurs aimants, qui ont une même polarité que les aimants de la roue, quand ils viennent en regard des aimants du timbre. Dans cette condition, les aimants du timbre sont attirés par ceux de la roue en rotation. Lors de la rotation de la roue, une force d'attraction des aimants du timbre est générée périodiquement. Dans ce cas, si le timbre vient en contact de la roue, le timbre peut être traité en surface pour éliminer les bruits lors du contact avec la roue.Advantageously, the stamp may be equipped with one or more magnets, which have the same polarity as the magnets of the wheel, when they come opposite the magnets of the stamp. In this condition, the stamp magnets are attracted to those of the rotating wheel. During the rotation of the wheel, a force of attraction of the stamp magnets is generated periodically. In this case, if the stamp comes into contact with the wheel, the stamp can be treated on the surface to eliminate noise during contact with the wheel.

Les buts, avantages et caractéristiques du mécanisme de sonnerie d'une montre ou d'une boîte à musique apparaîtront mieux dans la description suivante notamment en regard des dessins sur lesquels :

  • la figure 1 représente une vue de dessus simplifiée d'une forme d'exécution d'un mécanisme de sonnerie d'une montre selon l'invention,
  • la figure 2 représente un graphe comparatif de la force appliquée sur le timbre dans le temps lors d'un impact mécanique d'un marteau contre le timbre ou lors d'une force magnétique répétitive générée par la rotation de la roue d'activation magnétique d'un mécanisme de sonnerie selon l'invention,
  • la figure 3 représente un graphe comparatif de la vibration à l'extrémité du timbre dans le cas d'un choc mécanique d'un marteau contre le timbre ou dans le cas d'une vibration périodique du timbre par la rotation de la roue magnétique du mécanisme de sonnerie selon l'invention, et
  • la figure 4 représente un graphe comparatif de l'amplitude des partiels normalisés de la vibration d'un timbre générée par un impact mécanique ou par des impulsions magnétiques périodiques en fonction de la fréquence d'oscillation.
The purposes, advantages and characteristics of the striking mechanism of a watch or a music box will appear better in the following description especially with reference to the drawings in which:
  • the figure 1 represents a simplified top view of an embodiment of a striking mechanism of a watch according to the invention,
  • the figure 2 represents a comparative graph of the force applied to the timbre in time during a mechanical impact of a hammer against the stamp or during a repetitive magnetic force generated by the rotation of the magnetic activation wheel of a striking mechanism according to the invention,
  • the figure 3 represents a comparative graph of the vibration at the end of the timbre in the case of a mechanical shock of a hammer against the timbre or in the case of a periodic vibration of the timbre by the rotation of the magnetic wheel of the striking mechanism according to the invention, and
  • the figure 4 represents a comparative graph of the amplitude of the normalized partials of the vibration of a timbre generated by a mechanical impact or by periodic magnetic pulses as a function of the oscillation frequency.

Dans la description suivante, toutes les parties traditionnelles du mécanisme de sonnerie de la montre ou éventuellement d'une boîte à musique, qui sont bien connues dans ce domaine technique, ne seront décrites que sommairement.In the following description, all the traditional parts of the striking mechanism of the watch or possibly a music box, which are well known in this technical field, will be described only briefly.

A la figure 1, il est représenté de manière simplifiée un mécanisme de sonnerie 1 notamment pour une montre. Ce mécanisme de sonnerie comprend tout d'abord un timbre 11, qui est relié par exemple à une de ses extrémités à un porte-timbre 12, alors que l'autre extrémité est libre de mouvement. Le porte-timbre peut être fixé de préférence sur une platine non représentée d'un mouvement de la montre, mais il peut également être envisagé de le fixer sur une partie intérieure, telle que la carrure de la boîte de montre. Le mécanisme de sonnerie comprend encore un organe d'activation 2 du timbre, qui peut être sous la forme d'une roue d'activation montée rotative autour d'un axe de rotation 3, qui peut être monté de préférence sur la platine de montre. Le timbre et l'organe d'activation comprennent un agencement magnétique comme expliqué ci-après. Ceci permet de faire vibrer le timbre 11 sans contact mécanique avec l'organe d'activation pour la génération d'un ou plusieurs sons, lorsque l'organe d'activation est mis en fonction dans un mode de sonnerie.To the figure 1 , it is represented in a simplified manner a striking mechanism 1 especially for a watch. This striking mechanism comprises first of all a stamp 11, which is connected for example to one of its ends to a stamp holder 12, while the other end is free movement. The stamp holder can be preferably fixed on a plate not shown by a movement of the watch, but it can also be considered to fix it on an inner part, such as the middle part of the watch case. The striking mechanism further comprises an activation member 2 of the stamp, which may be in the form of an activation wheel rotatably mounted about an axis of rotation 3, which may preferably be mounted on the watch plate. . The patch and the activation member comprise a magnetic arrangement as will be explained hereinafter. This makes it possible to vibrate the patch 11 without mechanical contact with the activation member for the generation of one or more sounds, when the activation member is turned on in a ringing mode.

Le timbre 11 peut être réalisé sous la forme d'une portion rectiligne ou de cercle ou rectangulaire ou toute autre forme géométrique. Le timbre peut être réalisé par exemple au moyen d'un fil métallique, qui peut être dans un matériau ferromagnétique (Fer, Nickel, Acier ou Cobalt), ou également dans un métal précieux ou en verre métallique. Comme représenté de manière simplifiée selon la forme d'exécution de la figure 1, la portion rectiligne du timbre peut s'étendre parallèlement à la platine et au cadran de la montre non représenté. La section transversale du timbre 11 peut définir un rectangle ou de préférence un disque de diamètre inférieur à 0.8 mm.The stamp 11 can be made in the form of a rectilinear portion or a circle or rectangular or any other geometric shape. The stamp can be made for example by means of a wire, which can be in a ferromagnetic material (iron, nickel, steel or cobalt), or also in a precious metal or metal glass. As shown in a simplified manner according to the embodiment of the figure 1 , the rectilinear portion of the stamp may extend parallel to the plate and the dial of the not shown watch. The cross section of the stamp 11 may define a rectangle or preferably a disc of diameter less than 0.8 mm.

De manière à générer un ou plusieurs sons au moyen de l'agencement magnétique, le timbre comprend au moins un premier élément magnétique 13 disposé sur une partie intermédiaire de sa longueur. Ce premier élément magnétique 13 est de préférence un aimant permanent fixe 13. Cet aimant permanent fixe peut être avantageusement un micro-aimant. Ce micro-aimant peut être fixé au timbre par collage ou brasure ou être inséré dans un logement réalisé dans le matériau du timbre. Il peut être prévu également de fixer deux parties du timbre de chaque côté du micro-aimant par brasure. Ce micro-aimant du timbre peut aussi être réalisé directement dans le matériau du timbre, qui doit être dans ce cas ferromagnétique, par une opération de magnétisation bien connue.In order to generate one or more sounds by means of the magnetic arrangement, the patch comprises at least one first magnetic element 13 disposed on an intermediate portion of its length. This first magnetic element 13 is preferably a fixed permanent magnet 13. This fixed permanent magnet may advantageously be a micro-magnet. This micro-magnet can be attached to the stamp by gluing or brazing or inserted into a housing made of the stamp material. It may also be provided to fix two parts of the stamp on each side of the micro-magnet solder. This micro-magnet of the stamp can also be produced directly in the stamp material, which must in this case be ferromagnetic, by a well-known magnetization operation.

Pour l'agencement magnétique, l'organe d'activation sous la forme d'une roue d'activation 2 comprend également au moins un second élément magnétique 4 disposé en périphérie de la roue. Ce second élément magnétique 4 est disposé sur la roue 2 pour pouvoir générer un champ magnétique de polarité opposée au champ magnétique généré par le premier élément magnétique 13, lorsque le second élément magnétique 4 vient à proximité et en regard du premier élément magnétique dans un mode de sonnerie. Ce second élément magnétique 4 est un aimant permanent mobile, qui peut avantageusement être un micro-aimant mobile.For the magnetic arrangement, the activation member in the form of an activation wheel 2 also comprises at least a second magnetic element 4 disposed at the periphery of the wheel. This second magnetic element 4 is disposed on the wheel 2 to be able to generate a magnetic field of opposite polarity to the magnetic field generated by the first magnetic element 13, when the second magnetic element 4 comes close to and opposite the first magnetic element in a mode of ringtone. This second magnetic element 4 is a mobile permanent magnet, which may advantageously be a moving micro-magnet.

De préférence, la roue d'activation 2 comprend plusieurs micro-aimants disposés en périphérie de la roue. Ces micro-aimants mobiles 4 sont répartis de préférence régulièrement en périphérie de la roue en étant chacun de dimension équivalente ou différente du micro-aimant fixe 13 du timbre 11. Chaque micro-aimant mobile est disposé de préférence à égale distance du centre de la roue d'activation, et légèrement en saillie ou à fleur par rapport au bord périphérique de ladite roue. Il peut être prévu par exemple un nombre N de micro-aimants mobiles, par exemple 12 micro-aimants répartis régulièrement selon une distance angulaire de 30°.Preferably, the activation wheel 2 comprises a plurality of micro-magnets disposed at the periphery of the wheel. These mobile micro-magnets 4 are preferably distributed regularly around the periphery of the wheel, each being equivalent in size or different from the fixed micro-magnet 13 of the patch 11. Each moving micro-magnet is preferably disposed at an equal distance from the center of the wheel. activation wheel, and slightly protruding or flush with respect to the peripheral edge of said wheel. It can be provided, for example, with a number N of moving micro-magnets, for example 12 micro-magnets regularly distributed at an angular distance of 30 °.

Chaque micro-aimant mobile peut avoir une même valeur de magnétisation, mais il peut aussi être envisagé que cette valeur de magnétisation n'est pas égale pour chaque micro-aimant mobile. Ces micro-aimants mobiles 4 peuvent être fixés en périphérie de la roue d'activation 2 par collage ou brasure ou être inséré dans un logement réalisé dans le matériau de la roue. Ces micro-aimants mobiles 4 peuvent aussi être réalisés directement dans le matériau de la roue par une opération de magnétisation locale bien connue. Cependant, le matériau doit être dans ce cas ferromagnétique.Each moving micro-magnet may have the same magnetization value, but it may also be envisaged that this magnetization value is not equal for each moving micro-magnet. These mobile micro-magnets 4 can be fixed at the periphery of the activation wheel 2 by bonding or brazing or be inserted into a housing made of the wheel material. These mobile micro-magnets 4 can also be made directly in the wheel material by a well-known local magnetization operation. However, the material must in this case be ferromagnetic.

Les micro-aimants mobiles 4 sont susceptibles de venir chacun successivement à proximité et en regard du micro-aimant fixe 13 du timbre avec une polarité magnétique opposée au micro-aimant fixe 13, lors de la rotation de la roue dans le mode de sonnerie. Il peut être prévu que les micro-aimants mobiles sont disposés sur la roue pour avoir leur pôle Nord dirigé vers l'extérieur de la roue et leur pôle Sud dirigé vers le centre de la roue. Dans ces conditions, le pôle Nord du micro-aimant fixe 13 du timbre est dirigé en direction du centre de la roue d'activation. Cependant, il peut aussi être envisagé l'inverse avec les pôles Sud des micro-aimants mobiles dirigés vers l'extérieur pour pouvoir venir respectivement en regard du pôle Sud du micro-aimant fixe 13 du timbre.The mobile micro-magnets 4 may each come successively close to and opposite the fixed micro-magnet 13 of the patch with a magnetic polarity opposite the fixed micro-magnet 13, during the rotation of the wheel in the ring mode. It can be expected that the mobile micro-magnets are arranged on the wheel to have their North Pole directed towards the outside of the wheel and their South Pole directed towards the center of the wheel. Under these conditions, the north pole of the fixed micro-magnet 13 of the patch is directed towards the center of the activation wheel. However, it can also be considered the opposite with the South poles of the mobile micro-magnets directed outwardly to be able respectively to face the South pole of the fixed micro-magnet 13 of the stamp.

Lors de la rotation de la roue autour de l'axe de rotation 3, une force de répulsion magnétique maximale est générée quand chaque micro-aimant mobile vient exactement en regard du micro-aimant fixe 13 à une distance qui peut être de l'ordre de 5 µm ou légèrement inférieure ou supérieure. Cette distance peut être la même pour chaque micro-aimant mobile. Par contre, une force de répulsion magnétique est minimale quand deux micro-aimants mobiles 4 de la roue se trouvent à égale distance du micro-aimant fixe 13 du timbre 11. La variation de la force de répulsion magnétique est ainsi périodique lors de la rotation de la roue d'activation 2. De cette manière en fonction de la vitesse de rotation w de la roue imposée, il est possible de mettre en vibration le timbre selon un mode de vibration sélectionné.During the rotation of the wheel about the axis of rotation 3, a maximum magnetic repulsion force is generated when each micro-magnet mobile is exactly opposite the fixed micro-magnet 13 at a distance that can be of the order of 5 microns or slightly lower or higher. This distance can be the same for each mobile micro-magnet. By against a magnetic repulsion force is minimal when two mobile micro-magnets 4 of the wheel are equidistant from the fixed micro-magnet 13 of the patch 11. The variation of the magnetic repulsion force is thus periodic during rotation In this way, depending on the speed of rotation w of the imposed wheel, it is possible to vibrate the stamp according to a selected vibration mode.

Il est à noter que la force de répulsion de chaque micro-aimant mobile de la roue venant en regard du micro-aimant fixe du timbre s'accentue selon la 4e puissance de la distance en approximation locale dipolaire (donc si les aimants sont petits par rapport à leur distance). La répulsion devient 16 fois plus grande, quand la distance séparant les deux micro-aimants est divisée par deux. Si un des micro-aimants mobiles 4 s'approche à une distance par exemple voisine de 1 µm pour faire vibrer le timbre, la force magnétique peut être de l'ordre de 1 N. Mais comme indiqué ci-devant, normalement la distance minimale séparant chaque micro-aimant mobile 4 en regard du micro-aimant fixe 13, lors de la rotation de la roue d'activation, peut être de l'ordre de 5 µm. Cette distance peut aussi être légèrement inférieure ou supérieure de manière à générer une vibration continue et suffisante du timbre. Ces micro-aimants permanents peuvent être réalisés avec une taille de 1 mm3 ou inférieure, en générant un champ magnétique inférieur à 1200 Gauss.It should be noted that the repulsive force of each movable micro-magnet of the wheel coming opposite the micro-magnet fixed stamp is accentuated as the 4th power of the distance in local dipole approximation (so if the magnets are small relative to their distance). The repulsion becomes 16 times greater, when the distance separating the two micro-magnets is divided by two. If one of the moving micro-magnets 4 approaches at a distance, for example close to 1 μm, to make the tone vibrate, the magnetic force can be of the order of 1 N. However, as indicated above, the minimum distance is normally separating each mobile micro-magnet 4 facing the fixed micro-magnet 13, during the rotation of the activation wheel, may be of the order of 5 microns. This distance may also be slightly smaller or greater so as to generate a continuous and sufficient vibration of the tone. These permanent micro-magnets can be made with a size of 1 mm 3 or less, generating a magnetic field less than 1200 Gauss.

Par un réglage adapté de la vitesse de rotation ω de la roue d'activation 2, il est possible que la fréquence de variation de la force de répulsion magnétique soit en résonance avec une fréquence propre de vibration du timbre. L'énergie est ainsi transférée principalement sur cette fréquence propre en fonction de la sélection de la vitesse de rotation de la roue d'activation 2. Tant que la roue d'activation 2 tourne à la vitesse sélectionnée, le timbre reste en vibration à une fréquence propre spécifique sans aucun amortissement du son produit. L'intensité du son peut également être ajustée en éloignant ou rapprochant la roue magnétique 2 du timbre, ce qui accentue ou diminue la distance séparant chaque micro-aimant mobile 4 venant en regard du micro-aimant fixe 13 du timbre 11. De plus avec la génération d'une vibration du timbre 11 par des impulsions magnétiques périodiques, tout bruit parasite dû à des chocs mécaniques est éliminé.By a suitable adjustment of the rotational speed ω of the activation wheel 2, it is possible for the frequency of variation of the magnetic repulsion force to resonate with a natural vibration frequency of the tone. The energy is thus transferred mainly to this natural frequency as a function of the selection of the rotational speed of the activation wheel 2. As long as the activation wheel 2 rotates at the selected speed, the tone remains in vibration at a certain speed. specific natural frequency without any damping of the sound produced. The intensity of the sound can also be adjusted by moving the magnetic wheel 2 closer to or closer to the patch, which increases or decreases the distance separating each moving micro-magnet 4 coming opposite the fixed micro-magnet 13 of the patch 11. Moreover, the generation of a vibration of the stamp 11 by periodic magnetic pulses, any parasitic noise due to mechanical shocks is eliminated.

Pour le réglage de la vitesse de rotation de la roue d'activation, il peut être envisagé d'utiliser une méthode standard de freinage, ou une méthode de freinage par courants de Foucault, ou une autorégulation de l'ensemble roue-timbre par un mécanisme d'échappement magnétique. La répulsion magnétique, qui induit la vibration du timbre 11, peut aussi permettre de réguler la vitesse de rotation de la roue d'activation 2, si cette roue a une inertie comparable à l'inertie du timbre. Le timbre 11 et la roue d'activation 2 avec leurs éléments magnétiques 4, 13, peuvent être dimensionnés pour fixer simultanément la vitesse de rotation de la roue d'activation et les fréquences de vibration du timbre 11.For the adjustment of the rotation speed of the activation wheel, it may be envisaged to use a standard method of braking, or a method of braking by eddy currents, or a self-regulation of the wheel-stamp assembly by a magnetic exhaust mechanism. The magnetic repulsion, which induces the vibration of the patch 11, can also make it possible to regulate the speed of rotation of the activation wheel 2, if this wheel has an inertia comparable to the inertia of the patch. The patch 11 and the activation wheel 2 with their magnetic elements 4, 13 may be sized to simultaneously set the rotational speed of the activation wheel and the vibration frequencies of the patch 11.

Selon une variante de réalisation du mécanisme de sonnerie non représenté, il peut être envisagé que plusieurs roues magnétiques d'activation du timbre 11 sont prévues. Le timbre 11 peut également comprendre plus d'un premier élément magnétique sous forme d'aimant permanent fixe ou être magnétisé sur toute sa longueur, s'il est réalisé dans un matériau ferromagnétique. Chaque roue magnétique comprend un nombre de micro-aimants équivalent ou différent pour chaque roue avec une valeur de magnétisation différente ou égale des micro-aimants sur les roues d'activation. Les roues d'activation peuvent avoir des axes de rotation parallèles ou disposés avec un certain angle l'un par rapport à l'autre. Les roues d'activation peuvent être mises en rotation à des vitesses de rotation différentes et également à des instants différents dans un mode de sonnerie. La force de répulsion générée au niveau du micro-aimant fixe 13 du timbre 11 varie périodiquement et de manière différente en fonction de la rotation de l'une ou l'autre des roues d'activation en rotation. Il peut être sélectionné que le timbre se mette à vibrer à plusieurs fréquences propres spécifiques en fonction du nombre de roues magnétiques 2 mise en rotation dans la mode de sonnerie. Les modes de vibration du timbre peuvent être sélectionnés dans la gamme de fréquences préférée entre 1 kHz et 4 kHz.According to an alternative embodiment of the striking mechanism not shown, it can be envisaged that several magnetic wheels for activating the stamp 11 are provided. The patch 11 may also comprise more than one first magnetic element in the form of a fixed permanent magnet or be magnetized over its entire length, if it is made of a ferromagnetic material. Each magnetic wheel comprises an equivalent or different number of micro-magnets for each wheel with a magnetization value different or equal to the micro-magnets on the activation wheels. The activation wheels may have axes of rotation parallel or arranged at an angle relative to each other. The activation wheels can be rotated at different rotational speeds and also at different times in a ringing mode. The repulsion force generated at the level of the fixed micro-magnet 13 of the patch 11 varies periodically and differently depending on the the rotation of one or the other of the rotating activation wheels. It can be selected that the timbre vibrates at several specific eigenfrequencies according to the number of magnetic wheels 2 rotated in the ring mode. The vibration modes of the tone can be selected in the preferred frequency range between 1 kHz and 4 kHz.

Dans une réalisation alternative selon le même principe, les micro-aimants, qui sont disposés sur la roue et le timbre, ont une polarité, qui concorde. Ceci induit une attraction d'un aimant mobile de la roue en regard d'au moins un aimant fixe du timbre. Dans ce cas, le timbre est mis en tension, quand au moins un micro-aimant fixe du timbre est en regard d'au moins un micro-aimant de la roue en rotation. Le timbre est par contre relâché, quand ce micro-aimant mobile de la roue s'éloigne. Même dans ce cas, un transfert d'énergie périodique et continu existe entre la roue et le timbre. Les chocs entre roue et timbre ne sont par contre pas exclus, ce qui nécessite un traitement de la surface du timbre pour éviter tout bruit et toute usure de contact.In an alternative embodiment according to the same principle, the micro-magnets, which are arranged on the wheel and the stamp, have a polarity, which is consistent. This induces an attraction of a movable magnet of the wheel facing at least one fixed magnet of the stamp. In this case, the stamp is put in tension, when at least one fixed micro-magnet of the stamp is facing at least one micro-magnet of the rotating wheel. However, the tone is released when this moving micro-magnet of the wheel moves away. Even in this case, a periodic and continuous energy transfer exists between the wheel and the patch. Shocks between wheel and stamp are not excluded, however, which requires a treatment of the surface of the stamp to avoid noise and wear of contact.

A titre de comparaison entre un mécanisme de sonnerie traditionnel et le mécanisme de sonnerie de la présente invention, on peut se référer aux figures 2 à 4.As a comparison between a conventional ringing mechanism and the striking mechanism of the present invention, reference may be made to Figures 2 to 4 .

A la figure 2, il est représenté le graphe de la force agissant sur le timbre dans le temps pour un choc mécanique lors de la frappe du marteau contre le timbre pour un mécanisme de sonnerie traditionnel et pour une ou plusieurs impulsions magnétiques d'un mécanisme de sonnerie selon l'invention. La courbe liée au choc mécanique est montrée en traits interrompus, alors que la courbe liée à la force de répulsion magnétique périodique de la roue magnétique en rotation est montrée en traits pleins.To the figure 2 , it is represented the graph of the force acting on the timbre in time for a mechanical shock when striking the hammer against the stamp for a traditional ringing mechanism and for one or more magnetic pulses of a striking mechanism according to the 'invention. The curve related to the mechanical shock is shown in broken lines, while the curve related to the periodic magnetic repulsion force of the rotating magnetic wheel is shown in solid lines.

Pour ce graphe comparatif, le timbre est dimensionné avec une longueur L égale à 5 cm. La vitesse de rotation de la roue magnétique d'activation est fixée à 200 rad/s et le nombre N de micro-aimants mobiles de la roue est égal à 36. La distance entre le timbre et la roue est voisine de 10 µm. L'impulsion mécanique du mécanisme de sonnerie traditionnel a une durée très courte de l'ordre de 30 µs, alors que pour l'ensemble roue-timbre magnétique, il est possible de produire une force de répulsion pratiquement périodique et de durée choisie. Dans ce cas, il a été choisi que la roue tourne pendant une période de 0.01 s. Le profil des impulsions magnétiques est presque carré étant donné que la force magnétique de répulsion est pratiquement constante, si la roue se trouve dans un intervalle angulaire de 3° autour de la position angulaire correspondant à la force de répulsion maximale.For this comparative graph, the stamp is dimensioned with a length L equal to 5 cm. The rotation speed of the magnetic activation wheel is fixed at 200 rad / s and the number N of mobile micro-magnets of the wheel is equal to 36. The distance between the stamp and the wheel is similar of 10 μm. The mechanical pulse of the traditional ringing mechanism has a very short duration of the order of 30 microseconds, while for the magnetic wheel-stamp assembly, it is possible to produce a practically periodic repulsion force of selected duration. In this case, it has been chosen that the wheel rotates for a period of 0.01 s. The profile of the magnetic pulses is nearly square because the magnetic repulsion force is substantially constant, if the wheel is in an angular range of 3 ° around the angular position corresponding to the maximum repulsion force.

A la figure 3, il est représenté un graphe comparatif de l'évolution temporelle à l'extrémité libre du timbre de la vibration pour l'ensemble roue-timbre magnétique et pour un choc mécanique traditionnel. La courbe en traits interrompus correspond aux impulsions magnétiques périodiques, alors que la courbe en traits pleins correspond à au moins un choc mécanique. On remarque bien pour la courbe en traits interrompus, la périodicité de la vibration du timbre produite par les impulsions magnétiques générées par la roue magnétique en rotation.To the figure 3 a comparative graph of the temporal evolution at the free end of the vibration stamp for the magnetic wheel-stamp assembly and for a traditional mechanical shock is shown. The dashed curve corresponds to periodic magnetic pulses, while the curve in solid lines corresponds to at least one mechanical shock. Note for the curve in dashed lines, the periodicity of the vibration of the timbre produced by the magnetic pulses generated by the rotating magnetic wheel.

A la figure 4, il est représenté l'amplitude des partiels normalisés suite à une transformée rapide de Fourier en fonction de la fréquence d'oscillation du timbre, pour un mécanisme de sonnerie traditionnel et pour un mécanisme de sonnerie selon l'invention. Les vibrations du timbre sont composées de partiels, qui sont produits soit par le choc mécanique du timbre, soit par les impulsions magnétiques périodiques. La courbe en traits interrompus correspond aux impulsions magnétiques périodiques, alors que la courbe en traits pleins correspond à au moins un choc mécanique.To the figure 4 , the amplitude of the normalized partials is shown following a fast Fourier transform as a function of the oscillation frequency of the patch, for a traditional striking mechanism and for a striking mechanism according to the invention. The vibrations of the timbre are composed of partials, which are produced either by the mechanical shock of the timbre, or by the periodic magnetic pulses. The dashed curve corresponds to periodic magnetic pulses, while the curve in solid lines corresponds to at least one mechanical shock.

Dans le cas des impulsions magnétiques périodiques, l'énergie est transférée surtout au mode de vibration à 1 kHz, ce qui représente 65% de l'énergie totale, tandis que le 20% de l'énergie est transférée aux modes à plus basse fréquence. Etant donné que la vitesse de rotation de la roue magnétique a été fixée pour mettre en vibration le timbre principalement à la fréquence de 1 kHz, la majeure partie de l'énergie est relativement bien transférée à cette fréquence de vibration de 1 kHz. Ceci est totalement différent des modes de vibration suite à un choc mécanique, dont l'on observe plusieurs pics entre 1 kHz et 20 kHz, ainsi qu'au dessus. Cela montre bien que le transfert d'énergie dans au moins un mode de vibration du timbre dans les basses fréquences est maximisé avec l'agencement magnétique du mécanisme de sonnerie de l'invention. Tout bruit parasite est également éliminé.In the case of periodic magnetic pulses, the energy is transferred mainly to the 1 kHz vibration mode, which represents 65% of the total energy, while the 20% of the energy is transferred to the lower frequency modes. . Since the rotational speed of the magnetic wheel has been set to vibrate the tone primarily at the frequency of 1 kHz, most of the energy is relatively well transferred to this 1 kHz vibration frequency. This is totally different from the vibration modes following a mechanical shock, which we observe several peaks between 1 kHz and 20 kHz, and above. This shows that the energy transfer in at least one vibration mode of the low frequency tone is maximized with the magnetic arrangement of the striking mechanism of the invention. Any unwanted noise is also eliminated.

En lieu et place d'utiliser des micro-aimants permanents, il peut aussi être imaginé d'avoir comme éléments magnétiques sur la ou les roues d'activation et/ou sur le timbre, une ou plusieurs bobines susceptibles d'être reliées chacune à une source de courant continu pour générer un champ magnétique de polarité déterminée. Chaque bobine peut également être agencée pour être déconnectée de la source de courant continu dans un mode de repos du mécanisme de sonnerie.Instead of using permanent micro-magnets, it can also be imagined to have as magnetic elements on the activation wheel (s) and / or on the patch, one or more coils likely to be connected each to a direct current source for generating a magnetic field of determined polarity. Each coil may also be arranged to be disconnected from the DC source in a rest mode of the striking mechanism.

A partir de la description qui vient d'être faite, plusieurs variantes de réalisation du mécanisme de sonnerie d'une montre peuvent être conçues par l'homme du métier sans sortir du cadre de l'invention définie par les revendications. Une partie médiane du timbre peut être fixée à un porte-timbre solidaire de la platine ou de la carrure de montre. Le mécanisme de sonnerie peut comprendre plusieurs timbres activés chacun par une roue magnétique d'activation respective. Selon le nombre de timbres utilisés, ils peuvent constituer un clavier pour la génération de notes de musique par la mise en rotation de chaque roue magnétique à des instants déterminés. Les micro-aimants mobiles de la roue d'activation peuvent être répartis irrégulièrement en périphérie de la roue et avec une valeur de magnétisation différente pour certains micro-aimants. Ces micro-aimants mobiles peuvent être répartis en périphérie de la roue, de telle manière que certains micro-aimants mobiles sont à une distance différente du centre de la roue des autres micro-aimants mobiles. La direction de polarisation magnétique des micro-aimants de chaque roue magnétique peut alternativement être différente pour assurer une combinaison de la force de répulsion et de la force d'attraction lors de la rotation de la roue magnétique. Il peut être prévu également une combinaison d'une roue magnétique et d'un marteau à aimant permanent pour mettre en vibration magnétiquement en des instants différents le ou les timbres du mécanisme de sonnerie. L'axe de rotation de la roue magnétique d'activation peut également être disposé parallèle à la portion rectiligne du timbre à aimant permanent fixe ou selon un angle déterminé par rapport à la portion rectiligne du timbre. L'aimant permanent mobile de l'organe d'activation peut être prévu pour être déplacé périodiquement de manière rectiligne en direction de l'aimant permanent fixe du timbre ou sous la forme d'un pendule avec une fréquence d'oscillation déterminée.From the description that has just been given, several embodiments of the striking mechanism of a watch can be designed by those skilled in the art without departing from the scope of the invention defined by the claims. A middle portion of the stamp may be attached to a stamp holder integral with the plate or the middle part of the watch. The striking mechanism may comprise a plurality of timbres each activated by a respective magnetic activation wheel. Depending on the number of timbres used, they can constitute a keyboard for the generation of musical notes by rotating each magnetic wheel at specific times. The moving micro-magnets of the activation wheel may be unevenly distributed around the periphery of the wheel and with a different magnetization value for certain micro-magnets. These mobile micro-magnets can be distributed around the periphery of the wheel, such that certain mobile micro-magnets are at a different distance from the center of the wheel of the other mobile micro-magnets. The magnetic polarization direction of the micro-magnets of each magnetic wheel may alternatively be different to ensure a combination of the force of repulsion and attraction force during rotation of the magnetic wheel. It can also be provided a combination of a magnetic wheel and a permanent magnet hammer to magnetically vibrate at different times the stamps or the bell mechanism. The axis of rotation of the magnetic activation wheel may also be arranged parallel to the rectilinear portion of the fixed permanent magnet stamp or at a predetermined angle relative to the rectilinear portion of the stamp. The movable permanent magnet of the activation member may be provided to be periodically moved rectilinearly towards the fixed permanent magnet of the patch or in the form of a pendulum with a determined oscillation frequency.

Claims (18)

Mécanisme de sonnerie (1) d'une montre ou d'une boîte à musique, ledit mécanisme de sonnerie comprenant au moins un timbre (11) fixé à un porte-timbre (12), et au moins un organe d'activation (2) destiné à activer le timbre pour le mettre en vibration dans un mode de sonnerie, caractérisé en ce que le mécanisme de sonnerie comprend au moins un premier élément magnétique (13) disposé dans une partie du timbre (11), et au moins un second élément magnétique (4) disposé sur l'organe d'activation, et en ce que dans un mode de sonnerie, l'organe d'activation (2) est mis en fonction pour que le second élément magnétique (4) vienne de manière répétitive à proximité et en regard du premier élément magnétique (13), qui est disposé pour générer un champ magnétique de polarité opposée au champ magnétique généré par le second élément magnétique en regard du premier élément magnétique, afin de mettre en vibration le timbre par une variation répétitive de la force de répulsion magnétique des deux éléments magnétiques.Ringing mechanism (1) of a watch or a music box, said striking mechanism comprising at least one stamp (11) attached to a stamp holder (12), and at least one activation member (2) ) for activating the tone to vibrate in a ringing mode, characterized in that the striking mechanism comprises at least a first magnetic element (13) disposed in a portion of the patch (11), and at least a second magnetic element (4) disposed on the activation member, and in that in a ringing mode, the activation member (2) is turned on so that the second magnetic element (4) comes in a repetitive manner near and opposite the first magnetic element (13), which is arranged to generate a magnetic field of opposite polarity to the magnetic field generated by the second magnetic element facing the first magnetic element, in order to vibrate the tone by a variation repetitive the magnetic repulsion force of the two magnetic elements. Mécanisme de sonnerie (1) d'une montre ou d'une boîte à musique, ledit mécanisme de sonnerie comprenant au moins un timbre (11) fixé à un porte-timbre (12), et au moins un organe d'activation (2) destiné à activer le timbre pour le mettre en vibration dans un mode de sonnerie, caractérisé en ce que le mécanisme de sonnerie comprend au moins un premier élément magnétique (13) disposé dans une partie du timbre (11), et au moins un second élément magnétique (4) disposé sur l'organe d'activation, et en ce que dans un mode de sonnerie, l'organe d'activation (2) est mis en fonction pour que le second élément magnétique (4) vienne de manière répétitive à proximité et en regard du premier élément magnétique (13), qui est disposé pour générer un champ magnétique de même polarité que le champ magnétique généré par le second élément magnétique en regard du premier élément magnétique, afin de mettre en vibration le timbre par une variation répétitive de la force d'attraction magnétique des deux éléments magnétiques.Ringing mechanism (1) of a watch or a music box, said striking mechanism comprising at least one stamp (11) attached to a stamp holder (12), and at least one activation member (2) ) for activating the tone to vibrate in a ringing mode, characterized in that the striking mechanism comprises at least a first magnetic element (13) disposed in a portion of the patch (11), and at least a second magnetic element (4) disposed on the activation member, and in that in a ringing mode, the activation member (2) is turned on so that the second magnetic element (4) comes in a repetitive manner near and opposite the first magnetic element (13), which is arranged to generate a magnetic field of the same polarity as the magnetic field generated by the second magnetic element opposite the first magnetic element, in order to vibrate the tone by a repetitive variation of the magnetic attraction force of the two magnetic elements. Mécanisme de sonnerie (1) selon l'une des revendications 1 et 2, caractérisé en ce que le premier élément magnétique (13) du timbre est un aimant permanent fixe.Ringing mechanism (1) according to one of claims 1 and 2, characterized in that the first magnetic element (13) of the stamp is a fixed permanent magnet. Mécanisme de sonnerie (1) selon la revendication 3, caractérisé en ce que l'aimant permanent fixe (13) est un micro-aimant fixe.Ringing mechanism (1) according to claim 3, characterized in that the fixed permanent magnet (13) is a fixed micro-magnet. Mécanisme de sonnerie (1) selon l'une des revendications 1 et 2, caractérisé en ce que le second élément magnétique (4) de l'organe d'activation (2) est un aimant permanent mobile.Ringing mechanism (1) according to one of claims 1 and 2, characterized in that the second magnetic element (4) of the activation member (2) is a movable permanent magnet. Mécanisme de sonnerie (1) selon la revendication 5, caractérisé en ce que l'aimant permanent mobile (4) est un micro-aimant mobile.Ringing mechanism (1) according to claim 5, characterized in that the movable permanent magnet (4) is a moving micro-magnet. Mécanisme de sonnerie (1) selon l'une des revendications 1 et 2, caractérisé en ce que le premier élément magnétique (13) et/ou le second élément magnétique (4) sont chacun une bobine susceptible d'être reliée à une source de courant continu pour générer un champ magnétique de polarité déterminée de manière à générer une force de répulsion magnétique ou une force d'attraction magnétique, lorsque les deux éléments magnétiques sont à proximité et en regard l'un de l'autre.Ringing mechanism (1) according to one of claims 1 and 2, characterized in that the first magnetic element (13) and / or the second magnetic element (4) are each a coil that can be connected to a source of direct current for generating a magnetic field of determined polarity so as to generate a magnetic repulsion force or a magnetic attraction force, when the two magnetic elements are in proximity and facing each other. Mécanisme de sonnerie (1) selon la revendication 1, caractérisé en ce que l'organe d'activation (2) est une roue magnétique avec le second élément magnétique (4) disposé en périphérie de la roue magnétique, et en ce que lors de la rotation de la roue magnétique dans le mode de sonnerie, le second élément magnétique (4) en rotation est susceptible de générer une variation périodique de la force de répulsion magnétique des deux éléments magnétiques (4, 13), à chaque passage à proximité et en regard du premier élément magnétique de polarisation magnétique opposée, pour mettre en vibration le timbre (11).Ringing mechanism (1) according to claim 1, characterized in that the activation member (2) is a magnetic wheel with the second magnetic element (4) disposed at the periphery of the magnetic wheel, and in that the rotation of the magnetic wheel in the striking mode, the second rotating magnetic element (4) is capable of generating a periodic variation of the magnetic repulsion force of the two magnetic elements (4, 13) at each passage in the vicinity and opposite the first magnetic element of opposite magnetic polarization, for vibrating the stamp (11). Mécanisme de sonnerie (1) selon la revendication 8, caractérisé en ce que la roue magnétique (2) comprend plusieurs seconds éléments magnétiques (4) disposés en périphérie de la roue et susceptibles de venir successivement chacun à proximité et en regard du premier élément magnétique lors de la rotation de la roue magnétique, pour générer une variation périodique de la force de répulsion magnétique afin de mettre en vibration le timbre (11).Ringing mechanism (1) according to claim 8, characterized in that the magnetic wheel (2) comprises a plurality of second magnetic elements (4) arranged at the periphery of the wheel and likely to come successively each close and opposite the first magnetic element during the rotation of the magnetic wheel, to generate a periodic variation of the magnetic repulsion force to vibrate the stamp (11). Mécanisme de sonnerie (1) selon la revendication 2, caractérisé en ce que l'organe d'activation (2) est une roue magnétique avec le second élément magnétique (4) disposé en périphérie de la roue magnétique, et en ce que lors de la rotation de la roue magnétique dans le mode de sonnerie, le second élément magnétique (4) en rotation est susceptible de générer une variation périodique de la force d'attraction magnétique des deux éléments magnétiques (4, 13), à chaque passage à proximité et en regard du premier élément magnétique ayant une même polarisation magnétique, pour mettre en vibration le timbre (11).Ringing mechanism (1) according to claim 2, characterized in that the activation member (2) is a magnetic wheel with the second magnetic element (4) disposed at the periphery of the magnetic wheel, and in that the rotation of the magnetic wheel in the ringing mode, the second rotating magnetic element (4) is capable of generating a periodic variation of the magnetic attraction force of the two magnetic elements (4, 13) at each close passage and facing the first magnetic element having the same magnetic polarization, for vibrating the stamp (11). Mécanisme de sonnerie (1) selon la revendication 10, caractérisé en ce que la roue magnétique (2) comprend plusieurs seconds éléments magnétiques (4) disposés en périphérie de la roue et susceptibles de venir successivement chacun à proximité et en regard du premier élément magnétique lors de la rotation de la roue magnétique, pour générer une variation périodique de la force d'attraction magnétique, afin de mettre en vibration le timbre (11).Ringing mechanism (1) according to claim 10, characterized in that the magnetic wheel (2) comprises a plurality of second magnetic elements (4) arranged at the periphery of the wheel and likely to come successively each close and opposite the first magnetic element during the rotation of the magnetic wheel, to generate a periodic variation of the magnetic attraction force, in order to vibrate the stamp (11). Mécanisme de sonnerie (1) selon l'une des revendications 8 et 10, caractérisé en ce que la roue magnétique est agencée pour être entraînée en rotation à une vitesse de rotation sélectionnée afin que le timbre (11) vibre continument et principalement selon un mode de vibration déterminé dans un intervalle de fréquences audibles.Ringing mechanism (1) according to one of claims 8 and 10, characterized in that the magnetic wheel is arranged to be rotated at a selected rotation speed so that the stamp (11) vibrates continuously and mainly according to a mode of vibration determined in an audible frequency range. Mécanisme de sonnerie (1) selon la revendication 12, caractérisé en ce que le réglage de la vitesse de rotation de la roue magnétique (2) est obtenu par une autorégulation de l'ensemble roue-timbre par un mécanisme d'échappement magnétique.Ring mechanism (1) according to claim 12, characterized in that the adjustment of the speed of rotation of the wheel magnet (2) is obtained by self-regulation of the wheel-stamp assembly by a magnetic exhaust mechanism. Mécanisme de sonnerie (1) selon l'une des revendications 9 et 11, caractérisé en ce que les seconds éléments magnétiques (4) sont des micro-aimants mobiles disposés en périphérie de la roue magnétique (2) en étant disposés légèrement en saillie ou à fleur par rapport au bord périphérique de la roue magnétique (2).Bell mechanism (1) according to one of claims 9 and 11, characterized in that the second magnetic elements (4) are movable micro-magnets arranged on the periphery of the magnetic wheel (2) being arranged slightly projecting or flush with the peripheral edge of the magnetic wheel (2). Mécanisme de sonnerie (1) selon la revendication 14, caractérisé en ce que les micro-aimants mobiles (4) sont de dimension équivalente et disposés tous à égale distance du centre de la roue magnétique (2).Bell mechanism (1) according to claim 14, characterized in that the mobile micro-magnets (4) are of equivalent size and are all equidistant from the center of the magnetic wheel (2). Mécanisme de sonnerie (1) selon la revendication 14, caractérisé en ce que les micro-aimants mobiles (4) sont répartis de manière régulière en périphérie de la roue magnétique.Bell mechanism (1) according to claim 14, characterized in that the movable micro-magnets (4) are evenly distributed around the circumference of the magnetic wheel. Mécanisme de sonnerie (1) selon la revendication 14, caractérisé en ce que chaque micro-aimant mobile (4), qui est en regard du premier élément magnétique (13) du timbre, qui est un micro-aimant fixe, est à une distance adaptée comprise entre 1 µm et 20 µm, de préférence à une distance de l'ordre de 5 µm, et en ce que le mécanisme de sonnerie est prévu pour adapter la distance entre la roue magnétique et le timbre de manière à adapter l'amplitude de variation de la force de répulsion magnétique ou d'attraction magnétique, ainsi que le son généré par le timbre en vibration.Ringing mechanism (1) according to claim 14, characterized in that each movable micro-magnet (4), which is opposite the first magnetic element (13) of the patch, which is a fixed micro-magnet, is at a distance adapted between 1 micron and 20 microns, preferably at a distance of the order of 5 microns, and in that the striking mechanism is provided to adapt the distance between the magnetic wheel and the timbre so as to adapt the amplitude variation of the magnetic repulsion force or magnetic attraction, as well as the sound generated by the vibrating tone. Mécanisme de sonnerie (1) selon l'une des revendications 8 et 10, caractérisé en ce qu'il comprend plusieurs roues magnétiques (2), qui comprennent chacun un nombre déterminé et différent de micro-aimants mobiles en tant que seconds éléments magnétiques (4), qui sont répartis en périphérie de chaque roue, en ce que chaque roue magnétique est disposée à une certaine distance du premier élément magnétique (13) du timbre, et en ce que chaque roue magnétique est agencée pour tourner à une vitesse de rotation différente de manière à mettre en vibration continument le timbre selon plusieurs modes de vibration sélectionnés.Ringing mechanism (1) according to one of claims 8 and 10, characterized in that it comprises a plurality of magnetic wheels (2), each comprising a determined and different number of moving micro-magnets as second magnetic elements ( 4), which are distributed at the periphery of each wheel, in that each magnetic wheel is arranged at a distance from the first magnetic element (13) of the stamp, and in that each magnetic wheel is arranged to rotate at a different rotation speed so as to continuously vibrate the tone according to several selected vibration modes.
EP10194574.9A 2010-12-10 2010-12-10 Chiming mechanism of a watch or a music box Active EP2463732B1 (en)

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EP10194574.9A EP2463732B1 (en) 2010-12-10 2010-12-10 Chiming mechanism of a watch or a music box
CH02066/10A CH704199A2 (en) 2010-12-10 2010-12-10 Striking mechanism for watch, has wheel operated, so that movable magnetic element comes near and opposite to fixed magnetic element, to vibrate gong by repetitive variation of magnetic repulsive force of elements, in striking mode
US13/313,207 US8559277B2 (en) 2010-12-10 2011-12-07 Striking mechanism for a watch or a music box
CN201110410139.XA CN102566406B (en) 2010-12-10 2011-12-09 Striking mechanism for a watch or a music box
JP2011270914A JP5211232B2 (en) 2010-12-10 2011-12-12 Striking mechanism for watch or music box

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Cited By (9)

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Publication number Priority date Publication date Assignee Title
EP2808745A1 (en) * 2013-05-28 2014-12-03 Montres Breguet SA Ringing mechanism provided with means for selecting chime vibration mode
US9207643B2 (en) 2013-05-28 2015-12-08 Montres Breguet S.A. Striking mechanism provided with a means of selecting the mode of vibration of a gong
EP2911014A3 (en) * 2013-12-23 2016-04-06 The Swatch Group Research and Development Ltd. Interaction between two clock components
WO2016045806A1 (en) * 2014-09-25 2016-03-31 The Swatch Group Research And Development Ltd Interaction between two timepiece components
US10459406B2 (en) 2014-09-25 2019-10-29 The Swatch Group Research And Development Ltd Interaction between two timepiece components
EP3182224A1 (en) * 2015-12-18 2017-06-21 Montres Breguet S.A. Safety regulator for timepiece escapement
US10228659B2 (en) 2015-12-18 2019-03-12 Montres Breguet S.A. Safety regulation for a timepiece escapement
CN112021001A (en) * 2020-09-02 2020-12-04 东北林业大学 Vibration suppression method for pine cone picking device based on QL-SI algorithm
CN112021001B (en) * 2020-09-02 2022-05-10 东北林业大学 Vibration suppression method for pine cone picking device based on QL-SI algorithm

Also Published As

Publication number Publication date
US8559277B2 (en) 2013-10-15
EP2463732B1 (en) 2016-03-30
CH704199A2 (en) 2012-06-15
JP5211232B2 (en) 2013-06-12
US20120147715A1 (en) 2012-06-14
CN102566406A (en) 2012-07-11
JP2012128420A (en) 2012-07-05
CN102566406B (en) 2014-06-04

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