EP2367078B1 - Uhr mit Schlagwerk, das mit einer Schallmembran ausgestattet ist - Google Patents

Uhr mit Schlagwerk, das mit einer Schallmembran ausgestattet ist Download PDF

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Publication number
EP2367078B1
EP2367078B1 EP10156623.0A EP10156623A EP2367078B1 EP 2367078 B1 EP2367078 B1 EP 2367078B1 EP 10156623 A EP10156623 A EP 10156623A EP 2367078 B1 EP2367078 B1 EP 2367078B1
Authority
EP
European Patent Office
Prior art keywords
watch
case
striking
membrane
acoustic membrane
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
EP10156623.0A
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English (en)
French (fr)
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EP2367078A1 (de
Inventor
Polychronis Karapatis (Nakis)
Jérôme Favre
Lucien Germond
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
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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 EP10156623.0A priority Critical patent/EP2367078B1/de
Priority to CH00362/10A priority patent/CH702839B1/fr
Priority to EP18175157.9A priority patent/EP3404493B1/de
Priority to US13/030,420 priority patent/US8369188B2/en
Priority to CN2011100616876A priority patent/CN102193490B/zh
Priority to JP2011057857A priority patent/JP5421315B2/ja
Publication of EP2367078A1 publication Critical patent/EP2367078A1/de
Application granted granted Critical
Publication of EP2367078B1 publication Critical patent/EP2367078B1/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
    • G04B21/08—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
    • G04B23/12—Alarm watches to be worn in pockets or on the wrist
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B37/00—Cases
    • G04B37/0075—Cases with means to enhance sound transmission
    • G—PHYSICS
    • 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
    • G10K13/00—Cones, diaphragms, or the like, for emitting or receiving sound in general

Definitions

  • the invention relates to a striking watch, which is provided with an acoustic membrane.
  • the watch comprises a watch case consisting essentially of a middle and a bottom fixed and securely attached to the middle part.
  • An ice cream is disposed on an opposite side of the middle to seal said box.
  • a watch movement is maintained inside the watch case and provided with a striking mechanism that can be activated in specified periods of time to produce a sound.
  • At least one acoustic membrane is connected to the box to radiate the sound produced by the striking mechanism to the outside of the box.
  • a traditional architecture is used to perform movements, which may also include ringing mechanisms.
  • a striking mechanism can be activated in well-defined periods to signal a programmed alarm or minute repetitions.
  • the striking mechanism may comprise a stamp.
  • This stamp is usually a circular wire, which surrounds part of the watch movement in a watch cage.
  • This stamp is attached to a stamp holder attached to a watch plate. The vibration of the stamp is produced by the impact of at least one hammer against the stamp in certain periods.
  • a ringing watch such as a musical watch
  • the sound is produced by the blade vibrations of a keyboard.
  • the keyboard blades are made together with a keyboard heel, which is mounted on the watch plate.
  • the keyboard blades are lifted and released by pins integral with a cylinder or a rotating disc.
  • Each blade can therefore flex by the action of a corresponding pin of the cylinder or disk, and as soon as it is released, it oscillates mainly at its first natural frequency.
  • the musical keyboard is enclosed in the watch case. As a result, the vibrations generated by the activated blades are transmitted to the display parts of the watch.
  • the display parts of the watch are for example the middle part, the bezel, the ice or the bottom of the box.
  • these pieces of clothing are able to radiate the sound produced in the air.
  • the acoustic efficiency based on the complex vibro-acoustic transduction of the trim pieces, is low.
  • the material, the geometry and the boundary conditions of said trim pieces must be taken into account.
  • the configurations of these pieces of clothing are also dependent on the aesthetics of the watch and operating constraints, which may limit the possibilities of adaptation.
  • a membrane of the acoustic type which is dedicated to vibro-acoustic transduction.
  • a piezoelectric element for example on the membrane to make it vibrate. So that the sound radiation of the membrane is not lost in the watch, which must be sealed, it can be provided a double bottom of the watch case, which is open to the outside.
  • the bottom of the watch case has one or more openings for transmitting the sound of the vibrating membrane.
  • This membrane should in principle have its first natural frequency of vibration, which is the effective mode of radiation, in the useful acoustic frequency band, while its second eigenfrequency, which is an inefficient mode, must be if possible outside of this audible band.
  • the first and second natural frequencies of vibration do not fulfill the aforementioned conditions optimally.
  • a rapid depreciation is found, which is a disadvantage.
  • the document JP55046165 discloses an electronic watch with an acoustic membrane of amorphous material.
  • this membrane In a standard bell watch, which is provided for example with an acoustic membrane, this membrane is sandwiched between a portion of the middle part and the bottom of the watch case.
  • the bottom In the case of a luxury watch, the bottom can be made of a precious material, such as gold. It can occur in contact with the membrane usually made of steel with the gold bottom, an electrochemical potential difference especially in a humid environment. This is likely to promote the corrosion of said membrane at the contact with the gold background, which is a drawback.
  • the invention therefore aims to overcome the drawbacks of the state of the art by providing a bell watch, which is provided with an acoustic membrane, to obtain a good acoustic performance during operation of a striking mechanism in the watch box.
  • the invention relates to a striking watch comprising the features defined in the independent claim 1.
  • An advantage of the striking watch according to the present invention lies in the fact that the acoustic membrane in the watch case is made of an amorphous metal or metallic glass. Under these conditions, when the striking mechanism produces a sound or a succession of musical notes, the acoustic membrane is likely to vibrate with a first natural frequency located in the acoustic band useful between 1 and 4 kHz.
  • the second natural frequency of vibration which is generally ineffective in terms of sound radiation, is advantageously located above 4 kHz with this amorphous metal membrane. As a result, it does not affect the sound radiation of the membrane at its first natural frequency. It is the physical properties, such as the density and the Young's modulus of the amorphous metal, which make it possible to obtain these desired natural frequencies. With such an amorphous metal membrane, a very low damping is found, which provides a very good sound output.
  • this acoustic membrane is pinched sealingly on its edge between a connecting piece connected to the watch plate and the bottom of the watch case, which constitutes a double bottom.
  • One or more openings are provided through the bottom for the sound radiation of the acoustic membrane.
  • the figure 1 represents in simplified manner a partial section of a bell-shaped watch provided with an acoustic membrane according to the invention.
  • the figure 1 thus represents a simplified partial section of a ring-type watch 1 with an acoustic membrane 10.
  • the watch comprises a watch case, which is essentially composed of a caseband 4, on which is fixed on one side a case 3 and a case.
  • a bottom 5 is mounted by known means and removably on the middle part 4 with a seal 9.
  • a watch glass 2 is fixed in particular to the bezel 3 to close the box tightly. of watch.
  • a dial 13 is held at the edge on the middle part and placed beneath the watch glass 2.
  • time indication hands which are not shown, are provided on the dial, which usually carries hourly indices on the periphery.
  • the striking watch 1 also comprises a watch movement 20, which is generally mounted on a plate 14.
  • An edge piece 12 is fixed to the plate 14, which defines a watch cage.
  • both the plate 14 and the edge piece are made of a metallic material.
  • the watch movement comprises a striking mechanism, not shown.
  • This striking mechanism may comprise at least one stamp mounted on a stamp holder secured to the plate 14, and at least one hammer rotatably mounted on the plate to strike said stamp in specified periods.
  • the generally circular stamp surrounds the various parts of the watch movement. Such a striking mechanism is provided to signal a programmed alarm or minute repetitions.
  • the striking mechanism may comprise a keyboard with a set of blades connected to a heel, which is attached to the deck 14.
  • the sound or succession of musical notes are produced by keyboard blade vibrations.
  • Each blade is configured to produce a particular note.
  • the keyboard blades are lifted and released by pins secured to a cylinder or disk rotating on the plate 14.
  • Each activated blade oscillates mainly at its first natural frequency. The vibrations generated by the activated blades are transmitted to the watch's trim pieces, which must make it possible to radiate acoustically the sound produced by each vibrating blade.
  • the striking watch 1 essentially comprises an acoustic membrane 10 for improving the acoustic performance of the sound produced by the striking mechanism.
  • This acoustic membrane is made of an amorphous metal or metallic glass, which may be a stainless material. The thickness of this membrane may be less than or equal to 1 mm.
  • the acoustic membrane 10 is cup-shaped in one piece, the upper edge of which is sealingly mounted by an annular gasket 8 on an inner annular flange of the bottom 5 of the box.
  • the diameter of this bowl which may be equivalent to the diameter of the watch ice 2, may be between 20 and 40 mm.
  • An annular support 11 supports the plate 14 on one side with the edge piece 12 and bears on the upper edge of the acoustic membrane. At the time of attachment of the caseband 4 on the bottom 5 of the watch case, the support 11 and the peripheral edge of the acoustic membrane 10 are clamped between the caseband 4 and the rim of the bottom 5.
  • the central part of the acoustic membrane is not in contact with the support 11 and the inner surface of the bottom 5. As a result, a sufficient space 7 in the box is provided so that the acoustic membrane can freely vibrate or radiate acoustically.
  • the entire acoustic membrane 10 and the bottom 5 thus constitutes a double bottom.
  • One or more openings 6 are also provided laterally through the bottom 5 for allow the acoustic membrane to radiate the sound produced by the striking mechanism to the outside.
  • the sound produced by said striking mechanism is transmitted directly to the acoustic membrane to vibrate.
  • a vibration transmission to the acoustic membrane is also provided at the edge of the acoustic membrane by the connecting pieces 11, 12 and 14. Since the acoustic membrane is made of amorphous metal, it is able to vibrate at a first natural frequency located in the useful acoustic band between 1 and 4 kHz. The second natural frequency of vibration is on the other hand located above 4 kHz. This is very advantageous since the second vibration frequency is often destructive of sound.
  • These desired natural frequencies of sound vibration of the amorphous metal membrane are dependent on physical properties, such as density and Young's modulus. Moreover, with such an amorphous metal membrane, a very low damping is observed, which gives a very good acoustic performance of this acoustic membrane.
  • this acoustic membrane of amorphous metal or metallic glass can be manufactured cheaper than a traditional membrane made of steel or titanium. It may for example be manufactured from the molten state of the amorphous metal, followed by rapid quenching. Due to the fact that this amorphous metal membrane is stainless, it can be mounted on a background for example of precious metal, such as gold. No difference in electrochemical potential is thus observed even in a humid environment, so that no corrosion occurs in contact with the membrane 10 and the bottom 5.
  • the advantage of using an amorphous metal membrane comes from the fact that during its manufacture, the atoms, which make up said amorphous metal, do not arrange in a particular structure, which is different from a crystalline structure.
  • the amorphous metal differs by a higher elastic limit, for example twice as high as that of a traditional crystalline material.
  • the acoustic membrane made with the amorphous metal can thus undergo a greater stress before reaching its elastic limit. This also leads to having a lower damping of the membrane in vibration.
  • This metal glass or amorphous metal may be for example a metal alloy based on titanium, zirconium and beryllium.
  • the amorphous metal alloy may comprise 41% of zirconium, 14% of titanium, 12% of copper, 10% of nickel and 23% of beryllium.
  • the Young's modulus of this alloy is 105 GPa and the elastic limit is 1.9 GPa.
  • the amorphous metal alloy may also consist of 57.5% platinum, 14.7% copper, 5.3% nickel and 22.5% phosphorus.
  • the Young's modulus is in this case 98 GPa and the elastic limit is 1.4 GPa.
  • This amorphous metal acoustic membrane can be located in the watch case at the level of the middle part with an opening through the caseband for the sound radiation of the acoustic membrane in vibration.
  • the acoustic membrane may possibly be located on an outer portion of the watch case, but disposed at least on an opening of the housing so that the sound produced by the striking mechanism can vibrate the membrane.
  • It can be provided several acoustic membranes arranged in several places inside the watch case or superimposed. These acoustic membranes can be made with the same amorphous metal or with different amorphous metals. It can also be provided circular ribs for stiffening said acoustic membrane and modifying the first natural frequency of vibration.

Claims (13)

  1. Uhr (1) mit Läutwerk, umfassend ein Uhrengehäuse, das einen Mittelteil (4) und einen am Mittelteil dicht und abnehmbar befestigten Boden (5) aufweist, ein Glas (2), das das Gehäuse dicht verschließt, ein Uhrwerk (20), das im Inneren des Uhrengehäuses gehalten wird und mit einem Läutwerkmechanismus versehen ist, der in bestimmten Zeiträumen aktivierbar ist, um einen Klang zu erzeugen, und mindestens eine Schallmembran (10), die mit dem Gehäuse verbunden ist, um den durch das Läutwerkmechanismus erzeugten Klang an die äußere Umgebung des Gehäuses abzustrahlen, dadurch gekennzeichnet, dass die Schallmembran aus einem amorphen Metall hergestellt ist und dass das amorphe Metall eine Metalllegierung auf Titan-, Zirkonium- und Beryllium-Basis oder eine Metalllegierung ist, die aus 57,5 % Platin, 14,7 % Kupfer, 5,3 % Nickel und 22,5 % Phosphor gebildet ist.
  2. Uhr (1) mit Läutwerk nach Anspruch 1, dadurch gekennzeichnet, dass die Schallmembran (10) im Inneren des Uhrengehäuses zwischen dem Boden (5) des Gehäuses und einer Platine (14), auf der das Uhrwerk mit dem Läutwerkmechanismus montiert ist, angeordnet ist.
  3. Uhr (1) mit Läutwerk nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, dass die Schallmembran (10) an einem Innenrand des Bodens (5) des Gehäuses und einem Teil des Mittelteils (4) gehalten wird.
  4. Uhr (1) mit Läutwerk nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Platine (14), auf der das Uhrwerk montiert ist, auf einem Träger (11) angeordnet ist und dass der Umfang der Schallmembran (10) mit dem Umfang des Trägers zwischen dem Mittelteil (4) und einem Innenrand des Bodens (5) des Gehäuses eingeklemmt ist.
  5. Uhr (1) mit Läutwerk nach Anspruch 4, dadurch gekennzeichnet, dass die Schallmembran (10) die Form einer Schale aufweist, deren oberer Rand mit dem ringförmigen Träger zwischen dem Mittelteil (4) und einem inneren ringförmigen Rand des Bodens (5) des Gehäuses eingeklemmt ist, wobei eine ringförmige Dichtung (8) zwischen dem Rand des Bodens (5) und dem ringförmigen Rand der Membran angeordnet ist, und dass ein Mittelteil der Schallmembran nicht mit dem Träger (11) und mit einer inneren Oberfläche des Bodens (5) des Gehäuses in Kontakt steht, um einen Zwischenraum (7) zu definieren, um frei oszillieren zu können.
  6. Uhr (1) mit Läutwerk nach Anspruch 4, dadurch gekennzeichnet, dass die Platine (14) mit einem Einfassungsteil (12) verbunden ist, um auf dem ringförmigen Träger (11) auf einer der Schallmembran (10) gegenüberliegenden Seite montiert zu werden.
  7. Uhr (1) mit Läutwerk nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, dass der Boden (5) des Gehäuses mindestens eine seitliche Öffnung (6) aufweist, um der Schallmembran während ihrer Vibration zu ermöglichen, eine Schallabstrahlung in die äußere Umgebung des Uhrengehäuses zu erzeugen.
  8. Uhr (1) mit Läutwerk nach Anspruch 1, dadurch gekennzeichnet, dass die amorphe Metalllegierung 41 % Zirkonium, 14 % Titan, 12 % Kupfer, 10 % Nickel und 23 % Beryllium enthält.
  9. Uhr (1) mit Läutwerk nach Anspruch 1, dadurch gekennzeichnet, dass die Zusammensetzung der Metalllegierung in einer Weise festgelegt ist, dass die erste Schwingungseigenfrequenz der Schallmembran (10) im Bereich von 1 bis 4 kHz liegt, während die zweite Schwingungseigenfrequenz oberhalb von 4 kHz liegt.
  10. Uhr (1) mit Läutwerk nach Anspruch 1, dadurch gekennzeichnet, dass die Schallmembran, die die Form einer Schale aufweist und auf einem Rand des Bodens (5) des Uhrengehäuses angeordnet ist, einen Durchmesser besitzt, der im Wesentlichen ähnlich dem Durchmesser des Glases (2) ist, und eine Dicke kleiner oder gleich 1 mm aufweist, und dass das Glas (2) das Uhrengehäuse mittels einer Lünette (3) des Gehäuses, an der es befestigt ist, dicht verschließt.
  11. Uhr (1) mit Läutwerk nach Anspruch 1, dadurch gekennzeichnet, dass die Schallmembran (10), die im Inneren des Uhrengehäuses angeordnet ist, mehrere kreisförmige Rippen aufweist, um die erste Schwingungsfrequenz anzupassen.
  12. Uhr (1) mit Läutwerk nach Anspruch 1, dadurch gekennzeichnet, dass mehrere Schallmembranen (10) mit dem Uhrengehäuse verbunden sind und voneinander beabstandet oder einander überlagert sind.
  13. Uhr (1) mit Läutwerk nach Anspruch 12, dadurch gekennzeichnet, dass jede Membran aus einer unterschiedlichen amorphen Metalllegierung zusammengesetzt ist.
EP10156623.0A 2010-03-16 2010-03-16 Uhr mit Schlagwerk, das mit einer Schallmembran ausgestattet ist Active EP2367078B1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP10156623.0A EP2367078B1 (de) 2010-03-16 2010-03-16 Uhr mit Schlagwerk, das mit einer Schallmembran ausgestattet ist
CH00362/10A CH702839B1 (fr) 2010-03-16 2010-03-16 Montre à sonnerie munie d’une membrane acoustique.
EP18175157.9A EP3404493B1 (de) 2010-03-16 2010-03-16 Armbanduhr mit schlagwerk, das mit einer schallmembran ausgestattet ist
US13/030,420 US8369188B2 (en) 2010-03-16 2011-02-18 Striking watch with an acoustic membrane
CN2011100616876A CN102193490B (zh) 2010-03-16 2011-03-15 具有传音膜片的打点钟表
JP2011057857A JP5421315B2 (ja) 2010-03-16 2011-03-16 音響膜を有する時打ち腕時計

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10156623.0A EP2367078B1 (de) 2010-03-16 2010-03-16 Uhr mit Schlagwerk, das mit einer Schallmembran ausgestattet ist

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP18175157.9A Division-Into EP3404493B1 (de) 2010-03-16 2010-03-16 Armbanduhr mit schlagwerk, das mit einer schallmembran ausgestattet ist
EP18175157.9A Division EP3404493B1 (de) 2010-03-16 2010-03-16 Armbanduhr mit schlagwerk, das mit einer schallmembran ausgestattet ist

Publications (2)

Publication Number Publication Date
EP2367078A1 EP2367078A1 (de) 2011-09-21
EP2367078B1 true EP2367078B1 (de) 2018-08-15

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP10156623.0A Active EP2367078B1 (de) 2010-03-16 2010-03-16 Uhr mit Schlagwerk, das mit einer Schallmembran ausgestattet ist
EP18175157.9A Active EP3404493B1 (de) 2010-03-16 2010-03-16 Armbanduhr mit schlagwerk, das mit einer schallmembran ausgestattet ist

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP18175157.9A Active EP3404493B1 (de) 2010-03-16 2010-03-16 Armbanduhr mit schlagwerk, das mit einer schallmembran ausgestattet ist

Country Status (5)

Country Link
US (1) US8369188B2 (de)
EP (2) EP2367078B1 (de)
JP (1) JP5421315B2 (de)
CN (1) CN102193490B (de)
CH (1) CH702839B1 (de)

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EP3835883A1 (de) 2019-12-11 2021-06-16 The Swatch Group Research and Development Ltd Anordnung für die halterung und die schwingungsübertragung einer schallabstrahlungsmembran in einem armbanduhrengehäuse

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EP2113759A1 (de) 2008-04-29 2009-11-04 The Swatch Group Research and Development Ltd. Drucksensor mit einer ein amorphes Material enthaltenden Membran
CH704184A2 (fr) * 2010-12-02 2012-06-15 Montres Breguet Sa Membrane de rayonnement acoustique pour une boite a musique ou une montre a sonnerie.
EP2461220B1 (de) * 2010-12-02 2019-11-06 Montres Breguet SA Schallabstrahlungsmembran für eine Spieluhr oder eine Armbanduhr mit Schlagwerk

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EP3835883A1 (de) 2019-12-11 2021-06-16 The Swatch Group Research and Development Ltd Anordnung für die halterung und die schwingungsübertragung einer schallabstrahlungsmembran in einem armbanduhrengehäuse

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CN102193490B (zh) 2013-07-17
JP5421315B2 (ja) 2014-02-19
US20110228647A1 (en) 2011-09-22
EP2367078A1 (de) 2011-09-21
CH702839B1 (fr) 2019-12-30
EP3404493B1 (de) 2021-09-01
EP3404493A1 (de) 2018-11-21
CN102193490A (zh) 2011-09-21
CH702839A2 (fr) 2011-09-30
US8369188B2 (en) 2013-02-05
JP2011191305A (ja) 2011-09-29

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