EP2463732B1 - Schlagwerkmechanismus einer Armbanduhr oder einer Spieluhr - Google Patents

Schlagwerkmechanismus einer Armbanduhr oder einer Spieluhr Download PDF

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Publication number
EP2463732B1
EP2463732B1 EP10194574.9A EP10194574A EP2463732B1 EP 2463732 B1 EP2463732 B1 EP 2463732B1 EP 10194574 A EP10194574 A EP 10194574A EP 2463732 B1 EP2463732 B1 EP 2463732B1
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EP
European Patent Office
Prior art keywords
magnetic
wheel
gong
striking mechanism
moving
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP10194574.9A
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English (en)
French (fr)
Other versions
EP2463732A1 (de
Inventor
Polychronis Karapatis (Nakis)
Davide Sarchi
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Montres Breguet SA
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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 CH02066/10A priority Critical patent/CH704199A2/fr
Priority to EP10194574.9A priority patent/EP2463732B1/de
Priority to US13/313,207 priority patent/US8559277B2/en
Priority to CN201110410139.XA priority patent/CN102566406B/zh
Priority to JP2011270914A priority patent/JP5211232B2/ja
Publication of EP2463732A1 publication Critical patent/EP2463732A1/de
Application granted granted Critical
Publication of EP2463732B1 publication Critical patent/EP2463732B1/de
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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.
  • This striking device comprises in particular a hammer rotatably mounted and driven by means of an electromagnet towards a bell to generate a sound during the mechanical impact of the hammer against the bell.
  • an electromagnet towards a bell to generate a sound during the mechanical impact of the hammer against the bell.
  • any mechanical impact of the hammer against the bell can also induce unwanted noise, which is a drawback.
  • the vibrator comprises a vibrating membrane mounted on a shoulder of a support attached to the housing, and a coil mounted on a magnetic core, and disposed remotely under the vibrating membrane.
  • An annular magnet is still placed around of the coil as part of the magnetic circuit with the magnetic core.
  • a plate of soft material is fixed to the membrane to close without mechanical contact the magnetic circuit. When a current flows through the coil, a force to activate the membrane is applied to the plate to generate an acoustic signal without mechanical contact.
  • a disadvantage of such an electro-acoustic vibrator is that an electrical control must intervene to power the coil to vibrate said membrane, which requires significant power consumption.
  • an acoustic sound generator for a wristwatch.
  • This generator comprises a ferromagnetic pin attached to an inner portion of the watch glass, and an electromagnet for vibrating said pin.
  • the electromagnet comprises in particular a coil disposed in a magnetic circuit provided with permanent magnets. When powering the coil, the pin vibrates for generating an acoustic sound.
  • a disadvantage of this generator is that the coil must be supplied with alternating current to vibrate said pin and resonate the watch glass, which requires a significant power consumption.
  • 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 generating one or more sounds of at least one timbre without direct mechanical contact with a tone activation member in a ringing mode.
  • the invention relates to a striking mechanism of a watch or a music box cited above, which comprises the characteristics defined in the independent claims 1 and 2.
  • 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 ringing 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.
  • one or more coils may each be connected to a DC source to generate a magnetic field of polarity determined.
  • 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.

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  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
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  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Claims (17)

  1. Läutwerkmechanismus (1) einer Uhr oder einer Spieluhr, wobei der Läutwerkmechanismus wenigstens eine Tonfeder (11), die an einem Tonfederträger (12) befestigt ist, und wenigstens ein Aktivierungsorgan (2), das dazu bestimmt ist, die Tonfeder zu aktivieren, um sie in einer Läutbetriebsart in Schwingungen zu versetzen, umfasst, wobei der Läutwerkmechanismus wenigstens ein erstes magnetisches Element (13), das in einem Teil der Tonfeder (11) angeordnet ist, und wenigstens ein zweites magnetisches Element (4), das an dem Aktivierungsorgan angeordnet ist, umfasst, dadurch gekennzeichnet, dass das zweite magnetische Element (4) ein beweglicher Permanentmagnet ist und dass in einer Läutbetriebsart das Aktivierungsorgan (2) in Betrieb versetzt wird, damit der bewegliche Permanentmagnet (4) wiederholt in die Nähe des ersten magnetischen Elements (13) gelangt und diesem zugewandt ist, wobei das erste magnetische Element (13) dafür ausgelegt ist, ein Magnetfeld mit einer Polarität zu erzeugen, die entgegengesetzt zu jener des Magnetfeldes ist, das durch den beweglichen Permanentmagneten erzeugt wird, der dem ersten magnetischen Element zugewandt ist, um die Tonfeder durch eine wiederholte Veränderung der magnetischen Rückstoßkraft der zwei magnetischen Elemente in Schwingungen zu versetzen.
  2. Läutwerkmechanismus (1) einer Uhr oder einer Spieluhr, wobei der Läutwerkmechanismus wenigstens eine Tonfeder (11), die an einem Tonfederträger (12) befestigt ist, und wenigstens ein Aktivierungsorgan (2), das dazu bestimmt ist, die Tonfeder zu aktivieren, um sie in einer Läutbetriebsart in Schwingungen zu versetzen, umfasst, wobei der Läutwerkmechanismus wenigstens ein erstes magnetisches Element (13), das in einem Teil der Tonfeder (11) angeordnet ist, und wenigstens ein zweites magnetisches Element (4), das an dem Aktivierungsorgan angeordnet ist, umfasst, dadurch gekennzeichnet, dass das zweite magnetische Element (4) ein beweglicher Permanentmagnet ist und dass in einer Läutbetriebsart das Aktivierungsorgan (2) in Betrieb versetzt wird, damit der bewegliche Permanentmagnet (4) wiederholt in die Nähe des ersten magnetischen Elements (13) gelangt und diesem zugewandt ist, wobei das erste magnetische Element (13) dafür ausgelegt ist, ein Magnetfeld mit der gleichen Polarität zu erzeugen wie jene des Magnetfeldes, das durch den beweglichen Permanentmagneten erzeugt wird, der dem ersten magnetischen Element zugewandt ist, damit die Tonfeder durch eine wiederholte Veränderung der magnetischen Anziehungskraft der zwei magnetischen Elemente in Schwingungen versetzt wird.
  3. Läutwerkmechanismus (1) nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, dass das erste magnetische Element (13) der Tonfeder ein fester Permanentmagnet ist.
  4. Läutwerkmechanismus (1) nach Anspruch 3, dadurch gekennzeichnet, dass der feste Permanentmagnet (13) ein fester Mikromagnet ist.
  5. Läutwerkmechanismus (1) nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, dass der bewegliche Permanentmagnet (4) ein beweglicher Mikromagnet ist.
  6. Läutwerkmechanismus (1) nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, dass das erste magnetische Element (13) eine Spule ist, die mit einer Gleichstromquelle verbunden werden kann, um ein Magnetfeld mit bestimmter Polarität zu erzeugen, derart, dass eine magnetische Abstoßungskraft oder eine magnetische Anziehungskraft erzeugt wird, wenn sich die zwei magnetischen Elemente in gegenseitiger Nähe befinden und einander zugewandt sind.
  7. Läutwerkmechanismus (1) nach Anspruch 1, dadurch gekennzeichnet, dass das Aktivierungsorgan (2) ein magnetisches Rad ist mit einem beweglichen Permanentmagneten (4), der am Umfang das magnetischen Rades angeordnet ist, und dass bei der Drehung des magnetischen Rades in der Läutbetriebsart der sich drehende bewegliche Permanentmagnet (4) eine periodische Veränderung der magnetischen Abstoßungskraft der zwei magnetischen Elemente (4, 13), wenn er in die Nähe des ersten magnetischen Elements mit entgegengesetzter magnetischer Polarisation gelangt und diesem dabei zugewandt ist, erzeugen kann, um die Tonfeder (11) in Schwingungen zu versetzen.
  8. Läutwerkmechanismus (1) nach Anspruch 7, dadurch gekennzeichnet, dass das magnetische Rad (2) mehrere bewegliche Permanentmagneten (4) umfasst, die am Umfang des Rades angeordnet sind und nacheinander jeweils in die Nähe des ersten magnetischen Elements gelangen und diesem dabei zugewandt sind, wenn sich das magnetische Rad dreht, um eine periodische Veränderung der magnetischen Abstoßungskraft zu erzeugen, um die Tonfeder (11) in Schwingungen zu versetzen.
  9. Läutwerkmechanismus (1) nach Anspruch 2, dadurch gekennzeichnet, dass das Aktivierungsorgan (2) ein magnetisches Rad ist mit einem beweglichen Permanentmagneten (4), der am Umfang des magnetischen Rades angeordnet ist, und dass bei der Drehung des magnetischen Rades der sich drehende bewegliche Permanentmagnet (4) eine periodische Veränderung der magnetischen Anziehungskraft der zwei magnetischen Elemente (4, 13) erzeugen kann, wenn er in die Nähe des ersten magnetischen Elements, das die gleiche magnetische Polarisation besitzt, gelangt und diesem dabei zugewandt ist, um die Tonfeder (11) in Schwingungen zu versetzen.
  10. Läutwerkmechanismus (1) nach Anspruch 9, dadurch gekennzeichnet, dass das magnetische Rad (2) mehrere bewegliche Permanentmagneten (4) umfasst, die am Umfang des Rades angeordnet sind und bei der Drehung des magnetischen Rades nacheinander jeweils in die Nähe des ersten magnetischen Elements gelangen können und diesem dabei zugewandt sind, um eine periodische Veränderung der magnetischen Anziehungskraft zu erzeugen, um die Tonfeder (11) in Schwingungen zu versetzen.
  11. Läutwerkmechanismus (1) nach einem der Ansprüche 7 und 9, dadurch gekennzeichnet, dass das magnetische Rad dafür ausgelegt ist, mit einer ausgewählten Drehzahl rotatorisch angetrieben zu werden, damit die Tonfeder (11) ununterbrochen und hauptsächlich in einer bestimmten Schwingungsbetriebsart in einem Intervall hörbarer Frequenzen schwingt.
  12. Läutwerkmechanismus (1) nach Anspruch 11, dadurch gekennzeichnet, dass die Regulierung der Drehzahl des magnetischen Rades (2) durch eine automatische Regulierung der Rad-Tonfeder-Anordnung durch einen magnetischen Hemmungsmechanismus erhalten wird.
  13. Läutwerkmechanismus (1) nach einem der Ansprüche 8 und 10, dadurch gekennzeichnet, dass die zweiten magnetischen Elemente (4) bewegliche Mikromagneten sind, die am Umfang des magnetischen Rades (2) angeordnet sind, indem sie leicht vorstehend oder bündig in Bezug auf den Umfangsrand des magnetischen Rades (2) angeordnet sind.
  14. Läutwerkmechanismus (1) nach Anspruch 13, dadurch gekennzeichnet, dass die beweglichen Mikromagneten (4) äquivalente Abmessungen haben und alle im gleichen Abstand zum Zentrum des magnetischen Rades (2) angeordnet sind.
  15. Läutwerkmechanismus (1) nach Anspruch 13, dadurch gekennzeichnet, dass die beweglichen Mikromagneten (4) am Umfang des magnetischen Rades regelmäßig verteilt sind.
  16. Läutwerkmechanismus (1) nach Anspruch 13, dadurch gekennzeichnet, dass sich jeder bewegliche Mikromagnet (4), der sich gegenüber dem ersten magnetischen Element (13) der Tonfeder befindet und der ein fester Mikromagnet ist, in einem geeigneten Abstand im Bereich von 1 µm bis 20 µm und vorzugsweise in einem Abstand in der Größenordnung von 5 µm befindet und dass der Läutwerkmechanismus dazu vorgesehen ist, den Abstand zwischen dem magnetischen Rad und der Tonfeder in der Weise anzupassen, dass die Schwingungsamplitude der magnetischen Abstoßungskraft oder der magnetischen Anziehungskraft sowie der durch die schwingende Tonfeder erzeugte Ton angepasst werden.
  17. Läutwerkmechanismus (1) nach einem der Ansprüche 7 und 9, dadurch gekennzeichnet, dass er mehrere magnetische Räder (2) umfasst, die als die zweiten magnetischen Elemente (4) jeweils eine bestimmte und unterschiedliche Anzahl von beweglichen Mikromagneten umfassen, die am Umfang jedes Rades verteilt sind, dass jedes magnetische Rad in einem bestimmten Abstand von dem ersten magnetischen Element (13) der Tonfeder angeordnet ist und dass jedes magnetische Rad dafür ausgelegt ist, sich mit einer unterschiedlichen Drehzahl zu drehen, derart, dass die Tonfeder gemäß mehreren ausgewählten Schwingungsbetriebsarten ununterbrochen schwingt.
EP10194574.9A 2010-12-10 2010-12-10 Schlagwerkmechanismus einer Armbanduhr oder einer Spieluhr Active EP2463732B1 (de)

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CH02066/10A CH704199A2 (fr) 2010-12-10 2010-12-10 Mecanisme de sonnerie d'une montre ou d'une boite a musique.
EP10194574.9A EP2463732B1 (de) 2010-12-10 2010-12-10 Schlagwerkmechanismus einer Armbanduhr oder einer Spieluhr
US13/313,207 US8559277B2 (en) 2010-12-10 2011-12-07 Striking mechanism for a watch or a music box
CN201110410139.XA CN102566406B (zh) 2010-12-10 2011-12-09 用于表或音乐盒的击打机构
JP2011270914A JP5211232B2 (ja) 2010-12-10 2011-12-12 ウォッチ又はミュージックボックス用のストライキング機構

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US8559277B2 (en) 2013-10-15
EP2463732A1 (de) 2012-06-13
JP5211232B2 (ja) 2013-06-12
CN102566406B (zh) 2014-06-04
JP2012128420A (ja) 2012-07-05
US20120147715A1 (en) 2012-06-14
CN102566406A (zh) 2012-07-11

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