EP3540527B1 - Musikalische tastatur für einen schlagwerkmechanismus einer uhr - Google Patents

Musikalische tastatur für einen schlagwerkmechanismus einer uhr Download PDF

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Publication number
EP3540527B1
EP3540527B1 EP18162207.7A EP18162207A EP3540527B1 EP 3540527 B1 EP3540527 B1 EP 3540527B1 EP 18162207 A EP18162207 A EP 18162207A EP 3540527 B1 EP3540527 B1 EP 3540527B1
Authority
EP
European Patent Office
Prior art keywords
heel
tine
tines
musical
blade
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
EP18162207.7A
Other languages
English (en)
French (fr)
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EP3540527A1 (de
Inventor
Younes Kadmiri
Polychronis Nakis Karapatis
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 EP18162207.7A priority Critical patent/EP3540527B1/de
Priority to JP2019037241A priority patent/JP6857202B2/ja
Priority to US16/291,000 priority patent/US11513476B2/en
Priority to CN201910193911.3A priority patent/CN110277078B/zh
Publication of EP3540527A1 publication Critical patent/EP3540527A1/de
Application granted granted Critical
Publication of EP3540527B1 publication Critical patent/EP3540527B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10F—AUTOMATIC MUSICAL INSTRUMENTS
    • G10F1/00—Automatic musical instruments
    • G10F1/06—Musical boxes with plucked teeth, blades, or the like
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B21/00—Indicating the time by acoustic means
    • G04B21/02—Regular striking mechanisms giving the full hour, half hour or quarter hour
    • G04B21/08—Sounding bodies; Whistles; Musical apparatus
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K1/00—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs
    • G10K1/06—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs the resonating devices having the shape of a bell, plate, rod, or tube
    • G10K1/062—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

Definitions

  • the invention relates to a musical keyboard optimized for a striking mechanism of a timepiece.
  • the invention also relates to a method for producing a musical keyboard optimized for a striking mechanism of a timepiece.
  • a timepiece such as a watch
  • a striking mechanism capable of generating a sound or a melody at predetermined instants or on demand.
  • a musical module having at least one musical keyboard.
  • This musical keyboard consists of several blades, which are generally all connected to the same heel for mounting on a fixed part of the timepiece, such as a bridge or a plate or a middle part for example.
  • the blades are preferably rectilinear and parallel to each other in the same plane.
  • the length of a reed defines a specific note, when it is activated by a corresponding activation organ of the musical module.
  • the activation member acts on a free end of the reed to make it vibrate so that it generates the defined note.
  • the figures 1a and 1b represent an embodiment of a classic musical keyboard for a ringing mechanism according to a three-dimensional view and a top view.
  • the musical keyboard 1 is in one-piece form. It comprises a set of rectilinear blades 3 connected to a heel 2 for fastening in particular by means of screws, not shown, passing through holes 5 of the heel 2 of the keyboard 1 in a case of a timepiece. These blades 3 can be arranged parallel to each other in the same plane. The space between each strip 3 may be identical.
  • Each free end of the blades 3 comprises an element 4 in the form of a cam, which defines a ramp.
  • the ramp can preferably define an acute angle slope with respect to the free end of the blade 3.
  • a ball or cylinder cutter can be used by passing over the heel 2 of the keyboard 1 and drawing a cord p according to the length of the blades to be produced.
  • the length of the blades is calculated to obtain a specific frequency and the width and thickness of the blades are identical for all the blades.
  • point A and point B are not symmetrical with respect to the bending plane of blade 3, and this causes the blade to twist when the latter is bent by the passage of a pin.
  • the bending energy is thus distributed in the bending and torsion modes. bending is no longer pure and therefore the energy transmitted to the blade is not maximized in its first bending mode, which is the one that one wishes to radiate.
  • the first natural mode of bending of blade 3 is not correctly activated and the damping is more pronounced due to the fact that blade 3 vibrates according to bending and torsion modes. Under these conditions, it can be seen that there is a vibratory transfer from an activated blade 3 to another neighboring blade 3, because during the bending of the blade 3 to be activated, a stress is generated at the level of the embedding of the blade 3 to the heel 2. This constraint can pre-constrain the neighboring blades 3 if these are coupled together and therefore generate unwanted bending of these same blades 3. Thus when the pin passes over the cam 4 at the free end of a blade 3, it activates this blade 3, but also the neighboring blades 3.
  • the melody then presents parasites, because instead of having the pure sound generated by the activation of a single blade 3, two, three or four neighboring blades 3 can vibrate at the same time, but at lower vibratory amplitudes. This has the consequence of generating dissonance and it is observed that the sound is no longer as pure as desired, which constitutes a drawback of a musical keyboard of the prior art.
  • the patent CH 498 463 describes a musical keyboard.
  • This musical keyboard comprises several rectilinear blades connected to a heel by forming a single piece with the heel.
  • the heel also includes grooves in the extension of the spaces between the blades.
  • nothing is described concerning a machining of the blades from the heel in such a way as to avoid any dissonance during the activation of one of the blades, which constitutes a disadvantage.
  • JP 2001-215956 describes a musical keyboard with non-straight blades, parallel to each other and grooves made in the heel.
  • the object of the invention is therefore to overcome the drawbacks of the state of the art by providing a musical keyboard optimized for a striking mechanism of a timepiece, in order to avoid any vibratory transfer from an activated blade to the neighboring reeds so as not to generate a dissonant sound.
  • the invention relates to a musical keyboard optimized for a striking mechanism of a timepiece, which comprises the characteristics defined in independent claim 1.
  • the musical keyboard for a striking mechanism according to the invention is such that in the extension of the spaces between each blade, grooves are made in the heel, which makes it possible to decouple the blades from each other and to limit the vibration transfer from one blade to another. In addition, this also very locally limits the stresses at the level of the embedding of the blade activated at the heel. In effect, when a blade is activated, the bending of the blade generates a stress at the level of the embedding of the blade, but thanks to the grooves in the heel, the latter is not sufficient to pre-constrain the neighboring blades, which therefore remain inactive.
  • each blade is machined one by one with a ball or cylinder milling cutter to obtain symmetry between connection points at the heel with respect to the bending plane of the blade.
  • the first bending mode is fully activated when an activation pin flexes a blade as it passes.
  • the energy transmitted, in the first bending mode is therefore maximum. It is the same for the vibratory amplitude, which is also maximum, which has the effect of increasing the acoustic level of the melody as well as the perception of the sound.
  • the invention also relates to a method for producing a musical keyboard optimized for a striking mechanism of a timepiece, which comprises the features of independent claim 9.
  • the figures 2a and 2b represent an embodiment of a musical keyboard 1 for a musical module of a ringing mechanism.
  • the keyboard 1 comprises a set of blades 3, which are straight. These blades 3 are arranged parallel to each other in the same plane. The space between each blade 3 can be identical. One end of each blade is fixed to the same heel 2.
  • the heel 2 comprises holes 5 for the passage of screws not shown in order to fix the heel 2 for example on a bridge connected to a plate or directly on a plate or a middle in the case of a timepiece, such as a musical watch.
  • the blades 3 are made in one piece with the heel 2 to form a single piece of the same material, that is to say a one-piece musical keyboard 1.
  • the material may for example be a metallic material, such as steel or copper, or a precious metal such as gold or platinum, or also an amorphous structural material, such as metallic glass.
  • an element 4 in the form of a cam, which defines a ramp, at a free end of each blade 3.
  • the ramp of the cam 4 preferably defines a slope d acute angle with respect to the free end of the blade 3.
  • An activation member such as a pin, can come into contact with the ramp of the cam 4 so as to raise or flex the corresponding blade 3.
  • Each activation pin of the corresponding blade 3 can be found for example on a cylinder or a disc of the striking mechanism.
  • the activation of each blade via the cam 4 is carried out by the movement of a respective pin in a plane parallel to the blades 3 and in the direction of the free end of the blade 3 to be activated.
  • a rectilinear part of the blade, which is located behind each element 4 on the side of the free end of each blade 3 is necessary for the frequency tuning of the musical keyboard 1.
  • the musical keyboard 1 is dimensioned in such a way as to have blades 3, whose fundamental frequencies remain lower than the desired frequencies, which constitute the melody or ringtone.
  • the removal of material from this end makes it possible to increase the frequency of each blade 3 and thus to obtain precise tuning of each of them to within 5 Hz.
  • This modification in length of each blade 3 avoids any modification in thickness of the blade 3, in the case where the frequency of the blade 3 is greater than the target frequency. Retouching the thickness would reduce the stiffness of each strip 3. The energy stored during the bending of the strip 3 would be lower, and so would the acoustic level.
  • each groove 6 can be identical to the space between two neighboring blades 3.
  • Each groove 6 can be made rectilinear and in the direction of the corresponding space between two blades neighbors 3.
  • the depth of each groove 6 can be identical to the thickness of each blade 3, or even greater to avoid any vibratory transfer from one blade 3 to another neighboring blade 3 during their activation.
  • the thickness of the heel 2 can be chosen between 2 to 10 times greater than the thickness of each strip 3.
  • the grooves 6 can also be made throughout the entire thickness of the heel 2.
  • This thickness of the heel 2 is necessary to consider that the boundary conditions of each blade 3 are defined as “embeddedfree”. Without this additional thickness of the heel 2, that is to say with a thickness similar to that of the blades 3 or of the grooves 6, this leads to a reduction in the stiffness of each blade 3. Thus the assembly consisting of the heel 2 and the blades 3 to the end of each groove 6 would undergo deformation during the activation of each blade 3.
  • the thickness of the heel also makes it possible to have a support surface with the plate or the covering of the timepiece while allowing the blades 3 to vibrate freely. Without this heel 2, and because the embedding of each blade 3 is located at different places depending on the lengths of the different blades 3, some blades 3 would be in direct contact with the plate or caseband. This would prevent the activated blade 3 from vibrating properly and with increased damping.
  • a preform already comprising the shape of a heel 2 extended from one side perpendicularly by a flat portion of lower thickness where the blades must be made.
  • An upper surface of the flat portion is in an extension parallel to an upper surface of the heel 2.
  • the blades 3 of the musical keyboard 1 are therefore machined one by one from their free end to their attachment to the heel 2.
  • the spaces between two neighboring blades 3 are made by a machining tool, which can be for example a milling cutter or a cutout over.
  • the grooves 6 in the heel 2 can be obtained directly by the machining tool following each space between two neighboring blades, or even at the end of the machining of the musical keyboard 1.
  • the thickness of each blade 3 and the cam 4 of the free end of each blade 3 is adapted by a milling operation, in particular by means of a ball or cylinder cutter.
  • each blade 3 at the level of the attachment of each blade 3 to the heel 2 as shown in figure 2b , it is obtained by this type of machining a symmetry between the points A1 and B1 with respect to the bending plane of the blade 3 linked to the heel 2.
  • Each line p1 connecting the points A1 and B1 is perpendicular to the direction of each blade 3.
  • the grooves 6 in the heel 2 of the musical keyboard 1 their purpose is to decouple the blades 3 from each other and to limit the vibration transfer from one blade 3 to another neighboring blade 3. Indeed , when a blade 3 is activated, for example bent by a pin, the bending of the blade 3 generates a stress at the level of the embedding of the blade 3 at the heel 2. These grooves 6 avoid the coupling between blades 3 of the musical keyboard 1 and very locally limit the stresses at the level of the embedding of each activated blade 3. The grooves 6 prevent imposing, on the neighboring blades, a normal movement.
  • the melody generated by the musical keyboard 1 in this configuration of the present invention can be considered as pure and free from interference or dissonances.
  • the figures 3a and 3b represent a comparison during the activation for example of the blade 3 of the highest sound between a classical musical keyboard 1 at the picture 3a and a musical keyboard 1 optimized with the grooves 6 according to the invention at the figure 3b .
  • the blade 3 activated after the passage of the pin vibrates.
  • vibration scale is given between Min and Max and represented on the three blades 3 for the classic musical keyboard 1 and the musical keyboard 1 optimized without generation of dissonances, because the two blades 3 neighboring the highest activated blade 3 do not vibrate normally not.
  • Each rectilinear blade may have a rectangular or circular or other cross-section, which may be identical over the entire length of the blade.
  • the cross section can also vary gradually or discontinuously along the length of each blade.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • General Physics & Mathematics (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Electromechanical Clocks (AREA)

Claims (12)

  1. Musikklaviatur (1) für einen Schlagwerkmechanismus eines Teils für die Uhrmacherei (1), wobei die Musikklaviatur mehrere Lamellen (3) umfasst, die mit einem Zahnfuß (2) für die Befestigung der Klaviatur in dem Teil für die Uhrmacherei verbunden sind,
    wobei die Musikklaviatur (1) Nuten (6) in dem Zahnfuß (2) umfasst, die sich jeweils in der Verlängerung jedes Raums zwischen benachbarten Lamellen (3) erstrecken, wobei die Lamellen (3) geradlinig sind und parallel zueinander in einer gleichen Ebene ausgehend von dem Zahnfuß (2) angeordnet sind,
    dadurch gekennzeichnet, dass jede Lamelle (3) durch Bearbeitung erhalten wird, mit einer Symmetrie zwischen Verbindungspunkten (A1, B1) am Zahnfuß (2) in Bezug auf eine Biegeebene jeder zu betätigenden Lamelle (3).
  2. Musikklaviatur (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Lamellen (3) aus einem Material mit dem Zahnfuß (2) hergestellt sind, um ein einziges einstückiges Teil aus dem gleichen Material zu bilden.
  3. Musikklaviatur (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Lamellen (3) alle oder zum Teil von unterschiedlicher Länge sind, ausgehend von dem Zahnfuß bis zu einem freien Ende für die Erzeugung jeweils einer spezifischen Note bei ihrer Betätigung.
  4. Musikklaviatur (1) nach Anspruch 1, dadurch gekennzeichnet, dass jede Lamelle (3) in der Nähe eines freien Endes ein Element (4) in Form einer Kurvenscheibe umfasst, die eine Rampe definiert, sodass einem Betätigungsorgan des Schlagwerkmechanismus ermöglicht wird, die Lamelle beim Durchlaufen der Rampe zu betätigen.
  5. Musikklaviatur (1) nach Anspruch 4, dadurch gekennzeichnet, dass ein geradliniger Teil jeder Lamelle (3), der sich hinter jedem Element (4) auf Seite des freien Endes jeder Lamelle (3) befindet, ein Frequenzstimmen der Musikklaviatur (1) durch Verringerung der Länge der Lamelle ermöglicht.
  6. Musikklaviatur (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Tiefe jeder Nut (6) im Zahnfuß (2) identisch oder größer ist als die Dicke jeder Lamelle (3).
  7. Musikklaviatur (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Nuten (6) im Zahnfuß (2) ebenfalls in der gesamten Dicke des Zahnfußes (2) ausgeführt sind.
  8. Musikklaviatur (1) nach Anspruch 1, dadurch gekennzeichnet, dass Dicke des Zahnfußes (2) zwischen 2 bis 10 Mal größer ist als die Dicke jeder Lamelle (3).
  9. Verfahren zur Ausführung einer Musikklaviatur (1) für einen Schlagwerkmechanismus eines Teils für die Uhrmacherei, wobei das Verfahren folgende Schritte umfasst:
    - Bereitstellen einer anfänglichen Vorform, die bereits eine Form eines Zahnfußes (2) umfasst, der ausgehend von einer Seite senkrecht durch einen ebenen Abschnitt mit einer Dicke verlängert wird, die geringer ist als die Dicke des Zahnfußes (2),
    - Bearbeiten von Lamellen (3) in dem ebenen Abschnitt mit einem identischen Raum zwischen jedem Paar benachbarter Lamellen (3) und einer unterschiedlichen oder teilweise unterschiedlichen Länge jeder Lamelle ausgehend von dem Zahnfuß (2) und mit einer Symmetrie zwischen Verbindungspunkten (A1, B1) am Zahnfuß (2) in Bezug auf eine Biegeebene jeder zu betätigenden Lamelle (3) und
    - Bearbeiten von Nuten (6) im Zahnfuß (2) in der Verlängerung jedes der Räume zwischen zwei benachbarten Lamellen (3).
  10. Verfahren zur Ausführung einer Musikklaviatur (1) nach Anspruch 9, dadurch gekennzeichnet, dass die Lamellen (3) einzeln bearbeitet werden, ausgehend von ihrem freien Ende zu ihrer Befestigung am Zahnfuß (2).
  11. Verfahren zur Ausführung einer Musikklaviatur (1) nach Anspruch 9, dadurch gekennzeichnet, dass die Räume zwischen jedem Paar benachbarter Lamellen (3) durch Fräsen oder Drahtschneiden ausgeführt werden.
  12. Verfahren zur Ausführung einer Musikklaviatur (1) nach Anspruch 9, dadurch gekennzeichnet, dass die Bearbeitung der Lamellen (3) ausgehend vom Zahnfuß (2) zu ihrem freien Ende durch Fräsen mittels eines Kugel- oder Zylinderfräsers erfolgt, um eine Symmetrie zwischen Verbindungspunkten (A1, B1) am Zahnfuß (2) in Bezug auf eine Biegeebene jeder zu betätigenden Lamelle (3) aufzuweisen, und dadurch, dass die Dicke der Lamellen und jedes Elements (4) in Form einer Kurvenscheibe am freien Ende jeder Lamelle (3) durch Fräsen mittels eines Kugel- oder Zylinderfräsers ausgeführt wird.
EP18162207.7A 2018-03-16 2018-03-16 Musikalische tastatur für einen schlagwerkmechanismus einer uhr Active EP3540527B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP18162207.7A EP3540527B1 (de) 2018-03-16 2018-03-16 Musikalische tastatur für einen schlagwerkmechanismus einer uhr
JP2019037241A JP6857202B2 (ja) 2018-03-16 2019-03-01 時計の時打ち機構用音楽櫛
US16/291,000 US11513476B2 (en) 2018-03-16 2019-03-04 Musical comb for a timepiece striking mechanism
CN201910193911.3A CN110277078B (zh) 2018-03-16 2019-03-14 用于钟表报时机构的音乐梳

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18162207.7A EP3540527B1 (de) 2018-03-16 2018-03-16 Musikalische tastatur für einen schlagwerkmechanismus einer uhr

Publications (2)

Publication Number Publication Date
EP3540527A1 EP3540527A1 (de) 2019-09-18
EP3540527B1 true EP3540527B1 (de) 2022-01-26

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EP18162207.7A Active EP3540527B1 (de) 2018-03-16 2018-03-16 Musikalische tastatur für einen schlagwerkmechanismus einer uhr

Country Status (4)

Country Link
US (1) US11513476B2 (de)
EP (1) EP3540527B1 (de)
JP (1) JP6857202B2 (de)
CN (1) CN110277078B (de)

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US267104A (en) * 1882-11-07 piquet
US2493119A (en) * 1947-04-17 1950-01-03 Mattel Creations Inc Musical instrument having pluckable teeth
GB795555A (en) * 1955-07-22 1958-05-28 Theodore Roosevelt Duncan Improvements in or relating to musical devices with plucked teeth
CH343214A (fr) 1957-12-27 1959-12-15 Techna Anstalt Fuer Verwertung Procédé pour l'accordage d'un clavier à lames vibrantes de pièce à musique et clavier obtenu par ce procédé
CH498463A (fr) * 1969-06-16 1970-10-31 Matthey S A Procédé de fabrication d'un clavier de mouvement à musique, par fraisage ou meulage
JPS5852597U (ja) * 1981-10-06 1983-04-09 株式会社三協精機製作所 オルゴ−ルの振動板
JPH036949Y2 (de) * 1985-03-12 1991-02-21
JPH0535264A (ja) * 1991-07-26 1993-02-12 Sankyo Seiki Mfg Co Ltd オルゴール及び振動板製造方法
CN2255057Y (zh) * 1996-03-22 1997-05-28 何家旭 老爷钟机芯的音乐装置
CN1243302A (zh) * 1998-07-29 2000-02-02 株式会社三协精机制作所 八音盒装置
JP2001215956A (ja) * 2000-02-02 2001-08-10 Sankyo Seiki Mfg Co Ltd オルゴール装置
JP4617896B2 (ja) * 2005-01-24 2011-01-26 ヤマハ株式会社 楽器用発音体及びその製造方法
US7250565B2 (en) * 2005-06-21 2007-07-31 Mr. Christmas Inc. Automated musical instrument
US7544870B2 (en) * 2007-02-05 2009-06-09 White Richard H Music box movement and method of operation thereof
CN201918150U (zh) * 2011-01-28 2011-08-03 协樱精密工业股份有限公司 多音阶音乐铃的梳状簧片
EP2482275B1 (de) * 2011-01-28 2014-03-12 Montres Breguet SA Tastatur für Spieluhr, und mit einer solchen Tastatur ausgestattete Spieluhr
CH704670B1 (fr) * 2011-03-21 2015-04-30 Montres Bréguet S A Module musical pour une montre.
EP2814024B1 (de) * 2013-06-14 2015-10-21 Montres Breguet SA Verfahren zur Einstellung des Schwingungsfrequenzbereichs einer Vorrichtung zur Erzeugung von Tönen mit schwingenden Zungen
EP2881805A1 (de) * 2013-12-09 2015-06-10 Montres Breguet SA Schlagwerkstaste einer Armbanduhr oder einer Spieluhr mit optimierter Strahlung
CH708953B1 (fr) * 2013-12-09 2017-12-15 Montres Breguet Sa Disque-clavier de sonnerie optimisé pour pièce d'horlogerie.
US9925475B2 (en) * 2015-06-07 2018-03-27 James Ray Sweed Wind chimes with bubble producing means

Also Published As

Publication number Publication date
JP2019159320A (ja) 2019-09-19
CN110277078A (zh) 2019-09-24
US20190286060A1 (en) 2019-09-19
US11513476B2 (en) 2022-11-29
EP3540527A1 (de) 2019-09-18
JP6857202B2 (ja) 2021-04-14
CN110277078B (zh) 2023-01-10

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