EP4310604B1 - Uhrwerk mit einem schlagwerk, das mit einer flexiblen führung ausgestattet ist - Google Patents

Uhrwerk mit einem schlagwerk, das mit einer flexiblen führung ausgestattet ist

Info

Publication number
EP4310604B1
EP4310604B1 EP22185892.1A EP22185892A EP4310604B1 EP 4310604 B1 EP4310604 B1 EP 4310604B1 EP 22185892 A EP22185892 A EP 22185892A EP 4310604 B1 EP4310604 B1 EP 4310604B1
Authority
EP
European Patent Office
Prior art keywords
striking device
strips
horological movement
vibrating element
hammer
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
EP22185892.1A
Other languages
English (en)
French (fr)
Other versions
EP4310604A1 (de
Inventor
Baptiste Hinaux
Jérôme Favre
Jonathan Meyer
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.)
Swatch Group Research and Development SA
Original Assignee
Swatch Group Research and Development 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 Swatch Group Research and Development SA filed Critical Swatch Group Research and Development SA
Priority to EP22185892.1A priority Critical patent/EP4310604B1/de
Priority to US18/311,336 priority patent/US12560891B2/en
Priority to CN202310661383.6A priority patent/CN117434819A/zh
Priority to JP2023104846A priority patent/JP7586968B2/ja
Publication of EP4310604A1 publication Critical patent/EP4310604A1/de
Application granted granted Critical
Publication of EP4310604B1 publication Critical patent/EP4310604B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • G04B1/00—Driving mechanisms
    • 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
    • G04B15/00—Escapements
    • G04B15/14—Component parts or constructional details, e.g. construction of the lever or the escape wheel
    • 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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/04—Oscillators acting by spring tension
    • 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
    • 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
    • G04B31/00—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C13/00—Driving mechanisms for clocks by primary clocks
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means

Definitions

  • the invention falls within the field of watch movement complications, and in particular the striking mechanisms of a watch.
  • the invention relates to a watch movement comprising a striking mechanism with a flexible guide.
  • Such a ringing mechanism can be adapted to any type of ringing, such as a quarter repeater, minute repeater, loud ring, quiet ring or alarm.
  • Watch striking mechanisms are known to include a hammer designed to strike a vibrating element, such as a gong.
  • the hammer is constrained in movement towards the vibrating element by a spring and is cocked, that is to say held away from the gong, by an activation mechanism, such as a lift or other dedicated mechanism.
  • the vibrating element extends along a curvilinear direction within the watch case, for example, around a central axis of the case.
  • the hammer strikes the vibrating element, the hammer generates forces on the element, causing it to vibrate and, consequently, producing the chime.
  • These forces have a normal component and a tangential component, the latter characterizing the friction of the hammer on the vibrating element.
  • the vibration of the vibrating element is essentially generated by the normal component of the forces applied by the hammer, hence the need to control and maximize this normal component to control the effectiveness of the hammer's impact on the vibrating element and the sound produced by that impact.
  • the document CH 715 617 A2 reveals a bell-ringing hammer suspended on two flexible blades.
  • the invention overcomes the aforementioned drawbacks by proposing, for this purpose, a watch movement comprising a striking mechanism for a watch including a vibrating element and a striking device for said vibrating element.
  • the striking device comprises a hammer cantilevered from a structure of the watch movement by means of at least two elastic blades forming a flexible guide.
  • the two blades are arranged so as to extend in intersecting directions at a point C located on an axis T tangent to the vibrating element, the axis T being tangent to a surface of the vibrating element intended to be struck by the hammer of the striking device.
  • the invention may further comprise one or more of the following features, taken individually or in all technically possible combinations.
  • the striking device includes at least one elastic blade arranged so that the direction in which it extends does not pass through point C.
  • the striking device comprises blades arranged so as to form several groups of blades in each of which the blades extend in secant directions to a point of intersection on the axis T, said points of intersection of the directions of the blades of each group being distinct from one another.
  • the striking device is fixed to the structure of the watch movement only by a mechanical connection of the embedment type.
  • At least the blades are made of silicon, by deep reactive ion etching.
  • At least the blades are produced by laser machining, in particular by femtosecond lasers, or by electro-erosion.
  • the striking device is a single unit.
  • the striking device is made of amorphous metal, by molding or by hot forming.
  • the striking device is made of nickel or nickel phosphorus, by LIGA process.
  • the blades have a thickness less than that of the hammer.
  • FIG. 1 shows a striking mechanism 10 of a watch movement in a preferred embodiment of the invention.
  • the striking mechanism 10 comprises a vibrating element 11 and a striking device 120 for striking said vibrating element 11 to produce a sound.
  • the vibrating element 11 is fixed to a structure of the watch movement, for example to a bridge, a plate, etc., and is, in the embodiment shown in the figure 1 formed by a stamp.
  • the striking device 120 comprises a hammer 121 cantilevered from the watch movement structure by means of several blades 122 forming a flexible guide.
  • the blades 122 exhibit elastic deformation and are used in the present invention for guiding and driving the hammer 121.
  • each blade 122 has a straight shape when the striking device 120 is at rest, i.e., in an equilibrium position.
  • the flexible guide formed by the blades 122 is of the remote center of rotation (RCC) type.
  • the striking device 120 is cocked by an activation mechanism (not shown in the figures), such as a lever or other dedicated mechanism.
  • an activation mechanism such as a lever or other dedicated mechanism.
  • the hammer 121 is driven at a distance from the vibrating element 11, causing the blades 122 to deform progressively until they reach a cocked state.
  • the activation mechanism releases the hammer 121, which is then, under the effect of the elastic return force of the blades 122, driven into percussion. on the vibrating element 11, the striking device 120 being then in a percussion state.
  • the blades 122 allow for very precise positioning of the hammer 121 relative to the structure of the watch movement, and in particular relative to the vibrating element 11, without mechanical play or lubrication, unlike a conventional watch pivot. Furthermore, the blades 122 provide a constant amount of energy to move the hammer 121 with each strike of the striking device 120 on the vibrating element 11.
  • the blades 122 extend between two longitudinal ends. Each blade 122 is therefore mechanically linked, by one of its longitudinal ends, to the structure of the watch movement, and by its other longitudinal end, to the hammer 121.
  • the striking device 120 is fixed to the structure of the watch movement only by a mechanical connection of the fixed type, that is to say that the blades 122 constitute the only mechanical connection between the hammer 121 and the structure.
  • each 122 blade can be fixed to the structure of the watch movement by welding, screwing, gluing, tight fitting, or by any other means suitable to the reach of a person skilled in the art.
  • the blades 122 are arranged so that they extend in intersecting directions to a point C, which represents an instantaneous center of rotation located on an axis T tangent to the vibrating element 11, as shown in the figure 1 More precisely, the axis T is tangent to a surface of the vibrating element 11 intended to be subjected to the impact of the hammer 121.
  • the hammer is driven in displacement along a direction D perpendicular to the axis T, or along a direction tangent to a direction D perpendicular to the axis T.
  • This feature offers several advantages.
  • this feature maximizes the normal component of the forces applied by the hammer 121 to the vibrating element 11 during percussion, even eliminating any tangential component.
  • percussion is more efficient in terms of the forces transmitted to the vibrating element 11 for given elastic characteristics of the blades 122, resulting in a higher sound volume produced by said percussion.
  • this feature allows for better control of the position of the hammer's striking point 121 on the surface of the vibrating element 11, and thus enables better control of the vibratory response of said vibrating element 11 and therefore of the sound produced during the impact. More precisely, the sound produced during the impact differs depending on whether the striking point is located on a node or on an antinode of vibration of a vibratory mode of the vibrating element 11.
  • the striking device 120 may include more than two elastic blades 122 arranged so as to extend in intersecting directions at the same point C on the axis T. This feature makes it possible to increase the impact force of the hammer 121 on the vibrating element, for a given stroke.
  • At least one blade 122 can be arranged so that the direction in which it extends does not pass through point C.
  • the striking device 120 comprises blades 122 arranged to form several groups of blades 122, in each of which the blades 122 extend along intersecting directions at a point of intersection on the axis T, the points of intersection of the directions of the blades 122 of each group being distinct from each other. This characteristic allows for an increased stroke of hammer 121.
  • the 120 striking device is a single unit. This makes the 120 striking device particularly simple to manufacture, and its production cost is kept down. Furthermore, the mechanism is not susceptible to power loss during percussion due to any mechanical play that might exist if the 120 striking device were constructed by assembling various parts.
  • the 120 striking device can be made of amorphous metal, for example by molding or hot forming, or of nickel or nickel phosphorus, for example by LIGA process.
  • the striking device 120 and in particular the blades 122, can be made of silicon, for example by dry etching, and more specifically by deep reactive ion etching, a manufacturing method known as such to those skilled in the art by the acronym DRIE , meaning Deep Rective Ion Etching .
  • the blades 122 can, again alternatively, be made of steel and formed by laser machining, in particular by femtosecond lasers, or by electrical discharge machining (EDM).
  • the hammer 121 may include one or more masses made of a metallic material, for example tungsten or steel, to which the blades 122 are attached by pressing, gluing, screw or pin.
  • the blades 122 have a thinner profile than the hammer 121, as can be seen in the schematic cross-sectional view of the figure 3 This feature makes it possible to increase the mass of the hammer 121 relative to that of the blades 122, and therefore to increase the energy supplied by the latter during the percussion against the vibrating element 11.
  • the thickness is defined as the dimension extending in a direction perpendicular to a plane in which the striking device 120 and the vibrating element 11 are mobile.
  • the hammer has a trapezoidal shape in the examples of its realization shown on the figures 1 and 2 , but it can alternatively take any form suitable for the performance of percussion.
  • the vibrating element 11 is formed by a stamp comprising a strand extending in a circular direction inside which the striking device 120 is arranged.
  • the striking device 120 could be arranged outside the strand of the stamp.
  • the vibrating element 11 can adopt any suitable shape enabling it to vibrate following a hammer strike and to generate a sound by vibrating, such as a bell or a gong.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Electromechanical Clocks (AREA)

Claims (10)

  1. Uhrwerk umfassend ein Schlagwerk (10) einer Uhr mit einem schwingfähigen Element, nämlich einem Gong (11), und eine Schlagvorrichtung (120) zum Anschlagen des genannten schwingfähigen Elements (11), umfassend einen Hammer (121), der über mindestens zwei elastische Federblätter (122), die eine nachgiebige Führung bilden, kragend an einer Struktur des Uhrwerks befestigt ist, wobei die genannten Federblätter (122) beide so angeordnet sind, dass sie sich entlang von Richtungen erstrecken, die sich in einem Punkt C schneiden, welcher auf einer Achse T liegt, die tangential zum schwingfähigen Element (11) verläuft, dadurch gekennzeichnet, dass die Achse T an einer Oberfläche des schwingfähigen Elements (11) tangential verläuft, die dazu bestimmt ist, vom Hammer (121) getroffen zu werden.
  2. Uhrwerk nach Anspruch 1, wobei die Schlagvorrichtung (120) mindestens ein elastisches Federblatt (122) aufweist, das derart angeordnet ist, dass die Richtung, entlang der es sich erstreckt, nicht durch den Punkt C verläuft.
  3. Uhrwerk nach Anspruch 2, wobei die Schlagvorrichtung (120) Federblätter (122) aufweist, die derart angeordnet sind, dass sie mehrere Gruppen von Federblättern (122) bilden, in denen sich die Federblätter (122) entlang von Richtungen erstrecken, die sich in einem Schnittpunkt auf der Achse T schneiden, wobei die genannten Schnittpunkte der Richtungen der Federblätter (122) jeder Gruppe voneinander verschieden sind.
  4. Uhrwerk nach einem der Ansprüche 1 bis 3, wobei die Schlagvorrichtung (120) ausschließlich durch eine mechanische Verbindung vom Typ Einspannung an der Struktur des Uhrwerks befestigt ist.
  5. Uhrwerk nach einem der Ansprüche 1 bis 4, bei dem zumindest die Federblätter (122) aus Silizium mittels tiefreaktiven Ionenätzens (DRIE) hergestellt sind.
  6. Uhrwerk nach einem der Ansprüche 1 bis 4, bei dem zumindest die Federblätter (122) durch Laserbearbeitung, insbesondere mittels Femtosekundenlaser, oder durch Funkenerosion hergestellt sind.
  7. Uhrwerk nach einem der Ansprüche 1 bis 6, wobei die Schlagvorrichtung (120) einstückig ausgeführt ist.
  8. Uhrwerk nach Anspruch 7, bei dem die Schlagvorrichtung (120) aus amorphem Metall durch Gießen oder Warmumformen hergestellt ist.
  9. Uhrwerk nach Anspruch 7, bei dem die Schlagvorrichtung (120) mittels LIGA-Verfahren aus Nickel oder Nickel-Phosphor hergestellt ist.
  10. Uhrwerk nach einem der Ansprüche 1 bis 9, wobei die Federblätter (122) eine geringere Dicke als der Hammer (121) aufweisen.
EP22185892.1A 2022-07-20 2022-07-20 Uhrwerk mit einem schlagwerk, das mit einer flexiblen führung ausgestattet ist Active EP4310604B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP22185892.1A EP4310604B1 (de) 2022-07-20 2022-07-20 Uhrwerk mit einem schlagwerk, das mit einer flexiblen führung ausgestattet ist
US18/311,336 US12560891B2 (en) 2022-07-20 2023-05-03 Horological movement comprising a striking mechanism provided with a flexible guide
CN202310661383.6A CN117434819A (zh) 2022-07-20 2023-06-06 包括设有柔性引导件的报时机构的钟表机芯
JP2023104846A JP7586968B2 (ja) 2022-07-20 2023-06-27 フレキシブルなガイドを設けられた打刻機構を備えた時計ムーブメント

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22185892.1A EP4310604B1 (de) 2022-07-20 2022-07-20 Uhrwerk mit einem schlagwerk, das mit einer flexiblen führung ausgestattet ist

Publications (2)

Publication Number Publication Date
EP4310604A1 EP4310604A1 (de) 2024-01-24
EP4310604B1 true EP4310604B1 (de) 2025-12-24

Family

ID=82656718

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22185892.1A Active EP4310604B1 (de) 2022-07-20 2022-07-20 Uhrwerk mit einem schlagwerk, das mit einer flexiblen führung ausgestattet ist

Country Status (4)

Country Link
US (1) US12560891B2 (de)
EP (1) EP4310604B1 (de)
JP (1) JP7586968B2 (de)
CN (1) CN117434819A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK202430472A1 (en) 2024-08-19 2026-02-24 Dsm Ip Assets Bv Alpha-1,2 fucosyltransferase mutants with increased alpha 1,3-fucosyltransferase activity

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE14083C (de) * 1880-10-31 1881-07-20 AKTIEN - GESELLSCHAFT FÜR UHRENFABRIKATION in Lenzkirch (Baden) Tragstuhl für Uhrwerke mit schwingendem Tonfederträger
US1025821A (en) * 1911-06-20 1912-05-07 Charles H Pearson Device for improving the tone of cathedral-gongs for clocks.
EP2290479B1 (de) * 2009-08-26 2013-11-13 Montres Breguet SA Glocke für ein Schlagwerk einer Uhr
EP2362279B1 (de) * 2010-02-26 2019-05-08 Montres Breguet SA Schlagwerkmechanismus einer Armbanduhr mit aktiver Dämpfungsgegenfeder
CH706468B1 (fr) * 2012-05-02 2016-08-15 Patek Philippe Sa Geneve Mécanisme de sonnerie et pièce d'horlogerie dont le mouvement comporte un tel mécanisme.
CN113791531A (zh) * 2013-12-20 2021-12-14 劳力士有限公司 制造钟表部件的方法
US10216146B2 (en) * 2017-07-18 2019-02-26 Patek Philippe Sa Geneve Indicator actuating organ for a timepiece
EP3502802B1 (de) * 2017-12-19 2021-02-17 Omega SA Repetitionsmechanismus für chronograph mit sicherung
CH715617A2 (fr) * 2018-12-06 2020-06-15 Montres Breguet Sa Mécanisme de sonnerie d'horlogerie à marteau suspendu.
US20230136065A1 (en) * 2020-02-25 2023-05-04 Rolex Sa Silicon timepiece component for a timepiece
EP4016193A1 (de) * 2020-12-18 2022-06-22 Omega SA Resonatormechanismus eines uhrwerks mit flexibler führung, die mit mitteln zur einstellung der steifigkeit ausgestattet ist
CH719059B1 (fr) * 2021-10-14 2024-02-29 Richemont Int Sa Dispositif horloger comprenant un marteau comportant deux parties reliées entre elles par un organe de guidage flexible.

Also Published As

Publication number Publication date
JP2024014749A (ja) 2024-02-01
US20240027969A1 (en) 2024-01-25
EP4310604A1 (de) 2024-01-24
CN117434819A (zh) 2024-01-23
JP7586968B2 (ja) 2024-11-19
US12560891B2 (en) 2026-02-24

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