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EP2362278A1 - Hammer for a stricking mechanism of a watch - Google Patents

Hammer for a stricking mechanism of a watch Download PDF

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Publication number
EP2362278A1
EP2362278A1 EP10154766A EP10154766A EP2362278A1 EP 2362278 A1 EP2362278 A1 EP 2362278A1 EP 10154766 A EP10154766 A EP 10154766A EP 10154766 A EP10154766 A EP 10154766A EP 2362278 A1 EP2362278 A1 EP 2362278A1
Authority
EP
European Patent Office
Prior art keywords
hammer
impact part
metal
heel
impact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP10154766A
Other languages
German (de)
French (fr)
Other versions
EP2362278B1 (en
Inventor
Jérôme Favre
Patrice Golay
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 EP10154766.9A priority Critical patent/EP2362278B1/en
Priority to US13/035,171 priority patent/US8565046B2/en
Priority to CN2011100460961A priority patent/CN102169324B/en
Priority to JP2011041525A priority patent/JP5200127B2/en
Publication of EP2362278A1 publication Critical patent/EP2362278A1/en
Application granted granted Critical
Publication of EP2362278B1 publication Critical patent/EP2362278B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • 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
    • 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

Definitions

  • the invention relates to a hammer of a striking mechanism of a watch. Said hammer in the striking mechanism is able to strike at least one stamp of the striking mechanism in periods of time determined for the production of a sound.
  • the stamp used is a wire, for example steel, which may be generally circular. This wire is arranged around the movement, in the watch cage.
  • This stamp is fixed, for example by solder, to a stamp holder, which is itself secured to the watch plate.
  • the vibration of the stamp is produced by the impact generally near the stamp holder of at least one hammer.
  • the sound produced by the hammer hit is within the audible frequency range of 1 kHz to 20 kHz to signal to the wearer of the watch a definite time, a programmed alarm or a minute repeater.
  • a striking mechanism may comprise one or more wire stamps, configured for example in a portion of a circle.
  • the stamp (s) surround part of the movement of the watch.
  • Each stamp may be struck by a respective hammer rotatably mounted on the watch plate near the stamp holder, and held by a spring element in a rest position as shown for example in the patent document.
  • EP 1 574 917 is shown for example in the patent document.
  • the invention therefore aims to overcome the disadvantages of the state of the art by providing a hammer for a striking mechanism of a watch, made in such a way as to increase the acoustic level of the sound produced by the stamp struck by said hammer.
  • the invention relates to a hammer for a striking mechanism of a watch, which comprises the features defined in the independent claim 1.
  • An advantage of the hammer according to the present invention lies in the fact that the first impact part of the hammer is made of a harder material than hardened steel, especially in a hard metal. With this first hard metal impact part, this makes it possible to produce a more crystalline sound and a higher acoustic level, when the stamp is struck by said hammer. Until now, it has never been imagined to be able to make a hammer with a first impact part of high hardness material, fixed to a metal heel including hardened steel.
  • the first impact part of hard metal is very difficult to work and can be brittle, it can be expected to easily hunt, river, or glue a hammer rotation rod to a ring gear plate and / or a hammer drive pin on or through an end portion of the hardened steel heel.
  • the material of the first impact part is of greater density than the density of the metal bead material.
  • the volume dimensions of the first impact part are much larger than those of the metal heel so as to obtain a large inertial mass of the hammer even in a limited space available inside the watch. Thanks to this important inertial mass of the hammer, the striking of the stamp by the hammer can be carried out with a maximum of energy.
  • a hammer rotation shaft and / or hammer drive pin can be driven out, riveted or glued on or through an end portion of the metal bead, after positioning and securing the first impact portion on the metallic heel.
  • the first impact portion of the hammer is welded or brazed to an edge of the metal bead.
  • one or more holes for example through, can then be made in the metal bead being well positioned and oriented relative to the main body of the hammer.
  • the rotating rod and / or the drive pin can then easily be driven out or glued into a corresponding hole in the metal bead.
  • the first impact part of the hammer is made with a hard metal having a hardness greater than 1,000 HV, preferably more than twice the hardness of hardened steel.
  • This hard metal may be cobalt tungsten carbide.
  • both the density and the modulus of elasticity of the hard metal selected may be nearly twice the density and modulus of elasticity of hardened steel.
  • the first part impact material made of high hardness is thus scratchproof and highly resistant to oxidation.
  • a striking mechanism 1 which comprises at least one stamp 11 connected to a stamp holder 12, which can be fixed on a plate of the not shown striking mechanism.
  • a hammer 2 of the striking mechanism is rotatably mounted about an axis 7 on the plate near the stamp holder 12. This hammer is used to hit the stamp 11 to produce a sound to signal for example the hours, minutes or a scheduled alarm time.
  • the stamp 11 can be made in the form of a circle portion for example by means of a wire generally made of steel, or also in a precious metal or metal glass. This portion of a circle traditionally surrounds part of the unrepresented watch movement.
  • the hammer 2 generally comprises two parts 2 'and 2 ", which are fixed to one another: a first impact part 2' of the hammer consists of a harder material than hardened steel and This first impact part 2 ', which is preferably made of hard metal, is used to strike by a rounded edge 2a at least one stamp 11 of the striking mechanism 1.
  • a second part constitutes a heel 2 " through which the hammer 2 can be mounted on a plate of the striking mechanism.
  • This bead 2 " is preferably made of a metallic material, such as hardened steel,
  • the attachment of the first impact part 2 'to the metal bead 2" is advantageously carried out by brazing or welding, as explained hereinafter with reference to FIGS. Figures 2 and 3 .
  • a rotation rod 7 of the hammer 2 on the plate is preferably driven into a through hole of diameter slightly less than the diameter of the rod 7. This through hole is formed in an end portion of the metal heel 2 ". may also be made of metal, such as hardened steel.
  • This rod 7 is rotatably mounted on an opening of the not shown plate, to form the axis of rotation of the hammer 2 on the plate.
  • rotation rod 7 can also be riveted or glued on or through a hole of an end portion of the metal bead 2.
  • This rod can also be made of material with the metal bead to form only one. single piece.
  • the first impact portion 2 'of the hammer 2 is kept at rest at a distance from the stamp 11 by a damping assembly 4, 4a and 5.
  • This damping assembly comprises in known manner a mounted lever 5 rotating around an axis 8 fixed to the plate of the striking mechanism of the watch, and a wheel 4 of adjustment.
  • a pin 4a is placed off-center on the adjusting wheel. This pin is in contact with a surface of a first cam-shaped end of the lever.
  • the other arcuate end of the lever 5 holds the hammer 2 by via a drive pin 6 in a rest position.
  • This driving pin 6 is fastened to the metal bead 2 "of the hammer, which can advantageously be driven into a through hole made in the bead between the rod 7 and the first impact portion 2 '. at rest between the rounded edge 2a of the first impact portion 2 'of the hammer and the stamp 11 can be adjusted by means of the wheel 4 with the off-center pin 4a in contact with the surface of the first end of the lever 5.
  • the hammer 2 is pushed sharply on its drive pin 6 towards the stamp 11 by a free end of a spring 3.
  • This spring 3 is previously armed via a not shown.
  • the damping assembly in particular the arcuate part of the lever 5 which can flex, must also be made in such a way as to prevent a double impact of the hammer against the stamp as a result of the action of the reinforced spring 3.
  • the damper assembly can be made for example of hard metal whose modulus of elasticity is about triple that of traditional hardened steel. The elastic deformation of the damper is three times lower for a given stress.
  • the first impact portion 2 'of the hammer 2 is made of a material harder than hardened steel, which has a hardness of the order of 650 HV.
  • This high hardness material may advantageously be a hard metal of hardness greater than 1,000 HV.
  • An example of a hard metal is cobalt tungsten carbide (WCCo), which has a hardness of the order of 1,540 HV.
  • the material of this first impact part 2 'of said hammer 2 must also be of high density to obtain a large inertial mass of the hammer.
  • This density must be greater than that of hardened steel which is of the order of 8,000 kg / m 3 .
  • the density of the material chosen, such as hard metal must be at least 1.5 to 2 times greater than that of hardened steel, for example equal to or greater than 14,700 kg / m 3 .
  • the first impact part 2 'of the hammer 2 can still be made of a hard material whose modulus of elasticity is greater than that of hardened steel, which is of the order of 220 GPa.
  • this modulus of elasticity of the material used to make the hammer may be greater than 500 GPa, especially greater than or equal to 630 GPa.
  • a large modulus of elasticity of the material of the hammer 2 it is possible to minimize the elastic deformation of the hammer during impact against the stamp for a given stress. This also minimizes internal losses due to deformation. With such a material constituting the first impact part 2 'of the hammer, the acoustic level of the sound produced by the stamp 11 hit by the hammer is increased, which is desired.
  • Figures 2 and 3 represent on the one hand the two parts 2 'and 2 "assembled of the hammer 2 in plan view, and on the other hand a partial section of the hammer 2 along line III-III of the figure 2 .
  • the hybrid hammer 2 essentially comprises two parts 2 'and 2 "joined to each other
  • the first impact part 2' of the hammer is made of a harder material than traditionally hardened steel
  • This first impact part 2 ' is preferably a hard metal, such as cobalt tungsten carbide (WCCo), which has a hardness of about 50.degree. the order of 1'540 HV and density greater than 14'700 kg / m 3.
  • WCCo cobalt tungsten carbide
  • the first impact part 2 'must be of a greater volume than the volume of the second part, which is a metal heel 2 ".
  • This first impact part 2 'of hard metal can advantageously be brazed or welded to the metal bead 2 "of the hammer, the edge of the metal bead 2" and the connecting portion of the first impact part 2 'are represented by the two parallel lines in broken lines on this figure 2 .
  • first impact part 2 ' is made of hard metal, this first impact part is difficult to work with and can be brittle.
  • This first impact part is therefore advantageously brazed or welded to the metal bead 2 "in particular hardened steel in which it is easier to make holes to fix a rotating rod or drive pin.
  • first impact portion 2 ' is first brazed or welded to an edge of the metal heel 2 ". Subsequently, it is easy to make a first hole 7 'to receive a hammer rotation rod on the plate, and a second hole 6' to receive a hammer drive pin.
  • These two holes 6 'and 7' are well positioned and well oriented relative to the main body of the hammer 2 according to the position of the first impact part fixed on the metal heel.
  • the assembly portion of the first impact part 2' is in the form of a notch 13, which consists mainly of two flat surfaces arranged for example perpendicular to one another.
  • This assembly portion is brazed or welded to a complementary shaped edge, which comprises two surfaces, for example at right angles, metal heel 2 ".
  • an inner groove 15 is formed in an angle of the notch 13 of the assembly portion of the first part of impact.
  • the shape of the edge or the assembly portion may be different from that described above as far as it is easy to fix by brazing or welding or by some other means the first impact part 2 'on the metal heel 2 ". It could be envisaged to screw the first impact part on the metal heel, but this requires difficulty with at least a hole in the hard material of the first impact part.
  • the attachment of the first impact part on the metal heel can be performed by a dovetail attachment.
  • the holes 6' and 7 ' are formed in the bead to receive the driving pin 6 and the rotation rod 7.
  • the chamfered pin 6 and the chamfered rotary rod 7 are driven into each corresponding hole 6 'and 7' of slightly smaller diameter
  • the pin 6 and the rod 7 can also be glued into each corresponding hole or on the heel without making any holes or, as far as possible, it may also be envisaged to make the pin and the rod coming from material with the metal heel before fixing said heel 2 "with the first impact part 2 '. .
  • the hard material of the first impact part of the hammer may also be ceramic or diamond, but under these conditions, an additional mass must be placed on the first part.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

The hammer (2) has two fixed parts fixed with respect to each other, where one of the parts is constituted of material that is harden than that of hardened steel for constituting an impact part (2') against a gong (11) of a striking mechanism (1). Another fixed part is provided with a metallic stud (2'') that connects the hammer on a plate of the striking mechanism. The material of the impact part is cobalt-tungsten carbide. A rotation rod (7) is in contact with the metallic stud, where the rotation rod and the metallic stud are made of hardened steel.

Description

L'invention concerne un marteau d'un mécanisme de sonnerie d'une montre. Ledit marteau dans le mécanisme de sonnerie est susceptible de venir frapper au moins un timbre du mécanisme de sonnerie en des périodes de temps déterminées pour la production d'un son.The invention relates to a hammer of a striking mechanism of a watch. Said hammer in the striking mechanism is able to strike at least one stamp of the striking mechanism in periods of time determined for the production of a sound.

Dans le domaine de l'horlogerie, une architecture traditionnelle est utilisée pour réaliser un mouvement, qui peut être muni d'un mécanisme de sonnerie, par exemple pour des répétitions minutes. Pour une telle réalisation, le timbre utilisé est un fil métallique, par exemple en acier, qui peut être généralement de forme circulaire. Ce fil métallique est disposé autour du mouvement, dans la cage de montre. Ce timbre est fixé, par exemple par brasure, à un porte-timbre, qui est lui-même solidaire de la platine de montre. La vibration du timbre est produite par l'impact généralement à proximité du porte-timbre d'au moins un marteau. Le son produit par le timbre frappé par le marteau se situe dans la gamme de fréquences audibles de 1 kHz à 20 kHz de manière à signaler au porteur de la montre une heure bien définie, une alarme programmée ou une répétition minute.In the field of watchmaking, a traditional architecture is used to perform a movement, which may be provided with a striking mechanism, for example for minute repetitions. For such an embodiment, the stamp used is a wire, for example steel, which may be generally circular. This wire is arranged around the movement, in the watch cage. This stamp is fixed, for example by solder, to a stamp holder, which is itself secured to the watch plate. The vibration of the stamp is produced by the impact generally near the stamp holder of at least one hammer. The sound produced by the hammer hit is within the audible frequency range of 1 kHz to 20 kHz to signal to the wearer of the watch a definite time, a programmed alarm or a minute repeater.

Comme indiqué ci-devant dans une montre mécanique ou électro-mécanique, un mécanisme de sonnerie peut comprendre un ou plusieurs timbres à fil métallique, configurés par exemple en portion de cercle. Généralement, le ou les timbres entourent une partie du mouvement de la montre. Chaque timbre peut être frappé par un marteau respectif monté rotatif sur la platine de montre à proximité du porte-timbre, et maintenu par un élément ressort dans une position de repos comme montré par exemple dans le document de brevet EP 1 574 917 .As indicated above in a mechanical or electromechanical watch, a striking mechanism may comprise one or more wire stamps, configured for example in a portion of a circle. Generally, the stamp (s) surround part of the movement of the watch. Each stamp may be struck by a respective hammer rotatably mounted on the watch plate near the stamp holder, and held by a spring element in a rest position as shown for example in the patent document. EP 1 574 917 .

Dans l'état de la technique, il est toujours utilisé un marteau qui est réalisé facilement en acier, notamment en acier trempé. Ce marteau en acier trempé est jugé suffisamment dur pour la production d'un son par le timbre frappé par ledit marteau. Cependant avec un tel marteau en acier trempé, le son produit par le timbre frappé par ce marteau est à un niveau acoustique souvent insuffisamment élevé et peu cristallin pour le porteur de la montre, ce qui peut être un inconvénient. Un autre inconvénient d'un tel marteau en acier trempé est que sa densité volumique n'est pas suffisamment grande. De ce fait, il n'a pas une masse inertielle suffisante pour la production d'un niveau acoustique élevé lors de la frappe dudit marteau contre le timbre.In the state of the art, it is always used a hammer that is easily made of steel, especially hardened steel. This hammer hardened steel is considered hard enough for the production of a sound by the stamp struck by said hammer. However, with such a hardened steel hammer, the sound produced by the stamp hit by this hammer is at an acoustic level often insufficiently high and not very crystalline for the wearer of the watch, which can be a disadvantage. Another disadvantage of such a hardened steel hammer is that its density is not large enough. As a result, it does not have an inertial mass sufficient to produce a high acoustic level when the hammer hits the stamp.

L'invention a donc pour but de pallier aux inconvénients de l'état de la technique en fournissant un marteau pour un mécanisme de sonnerie d'une montre, réalisé de telle manière à permettre d'augmenter le niveau acoustique du son produit par le timbre frappé par ledit marteau.The invention therefore aims to overcome the disadvantages of the state of the art by providing a hammer for a striking mechanism of a watch, made in such a way as to increase the acoustic level of the sound produced by the stamp struck by said hammer.

A cet effet, l'invention concerne un marteau pour un mécanisme de sonnerie d'une montre, qui comprend les caractéristiques définies dans la revendication indépendante 1.To this end, the invention relates to a hammer for a striking mechanism of a watch, which comprises the features defined in the independent claim 1.

Des formes d'exécution particulières du marteau pour un mécanisme de sonnerie d'une montre sont définies dans les revendications dépendantes 2 à 13.Particular embodiments of the hammer for a striking mechanism of a watch are defined in dependent claims 2 to 13.

Un avantage du marteau selon la présente invention, réside dans le fait que la première partie d'impact du marteau est réalisée dans un matériau plus dur que de l'acier trempé, notamment dans un métal dur. Grâce à cette première partie d'impact en métal dur, cela permet de produire un son plus cristallin et un niveau acoustique plus élevé, lorsque le timbre est frappé par ledit marteau. Jusqu'à présent, il n'a jamais été imaginé de pouvoir réaliser un marteau avec une première partie d'impact en matériau de grande dureté, fixée à un talon métallique notamment en acier trempé. Comme la première partie d'impact en métal dur est très difficile à travailler et peu être cassante, il peut ainsi être prévu de facilement chasser, river ou coller une tige de rotation du marteau sur une platine du mécanisme de sonnerie et/ou une goupille d'entraînement du marteau sur ou à travers une portion d'extrémité du talon en acier trempé.An advantage of the hammer according to the present invention lies in the fact that the first impact part of the hammer is made of a harder material than hardened steel, especially in a hard metal. With this first hard metal impact part, this makes it possible to produce a more crystalline sound and a higher acoustic level, when the stamp is struck by said hammer. Until now, it has never been imagined to be able to make a hammer with a first impact part of high hardness material, fixed to a metal heel including hardened steel. Since the first impact part of hard metal is very difficult to work and can be brittle, it can be expected to easily hunt, river, or glue a hammer rotation rod to a ring gear plate and / or a hammer drive pin on or through an end portion of the hardened steel heel.

Avantageusement, le matériau de la première partie d'impact est de masse volumique plus importante que la masse volumique du matériau du talon métallique. De plus, les dimensions volumiques de la première partie d'impact sont bien plus grandes que celles du talon métallique de manière à obtenir une masse inertielle importante du marteau même dans un espace restreint à disposition à l'intérieur de la montre. Grâce à cette masse inertielle importante du marteau, la frappe du timbre par le marteau peut être effectuée avec un maximum d'énergie.Advantageously, the material of the first impact part is of greater density than the density of the metal bead material. In addition, the volume dimensions of the first impact part are much larger than those of the metal heel so as to obtain a large inertial mass of the hammer even in a limited space available inside the watch. Thanks to this important inertial mass of the hammer, the striking of the stamp by the hammer can be carried out with a maximum of energy.

Avantageusement, une tige de rotation du marteau et/ou une goupille d'entraînement du marteau peuvent être chassées, rivées ou collées sur ou à travers une portion d'extrémité du talon métallique, après avoir positionné et fixé la première partie d'impact sur le talon métallique. De préférence, la première partie d'impact du marteau est soudée ou brasée sur un bord du talon métallique. Après positionnement et fixation de la première partie d'impact sur le talon métallique, un ou plusieurs trous, par exemple traversants, peuvent ensuite être réalisés dans le talon métallique en étant bien positionnés et bien orientés par rapport au corps principal du marteau. La tige de rotation et/ou la goupille d'entraînement peuvent par la suite facilement être chassées ou collées dans un trou correspondant du talon métallique.Advantageously, a hammer rotation shaft and / or hammer drive pin can be driven out, riveted or glued on or through an end portion of the metal bead, after positioning and securing the first impact portion on the metallic heel. Preferably, the first impact portion of the hammer is welded or brazed to an edge of the metal bead. After positioning and fixing the first impact part on the metal bead, one or more holes, for example through, can then be made in the metal bead being well positioned and oriented relative to the main body of the hammer. The rotating rod and / or the drive pin can then easily be driven out or glued into a corresponding hole in the metal bead.

Avantageusement, la première partie d'impact du marteau est réalisée avec un métal dur ayant une dureté supérieure à 1'000 HV, de préférence de dureté plus du double de celle de l'acier trempé. Ce métal dur peut être du carbure de tungstène cobalt. Il peut être imaginé aussi une première partie d'impact du marteau réalisée en céramique ou même en diamant. De plus, aussi bien la masse volumique que le module d'élasticité du métal dur choisi peuvent être près de deux fois supérieurs à la masse volumique et au module d'élasticité de l'acier trempé. La première partie d'impact en matériau de grande dureté est ainsi inrayable et très résistant à l'oxydation.Advantageously, the first impact part of the hammer is made with a hard metal having a hardness greater than 1,000 HV, preferably more than twice the hardness of hardened steel. This hard metal may be cobalt tungsten carbide. It can also be imagined a first impact part of the hammer made of ceramic or even diamond. In addition, both the density and the modulus of elasticity of the hard metal selected may be nearly twice the density and modulus of elasticity of hardened steel. The first part impact material made of high hardness is thus scratchproof and highly resistant to oxidation.

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

  • la figure 1 représente de manière simplifiée un mécanisme de sonnerie d'une montre, qui est muni d'un marteau selon l'invention pour frapper un timbre du mécanisme de sonnerie,
  • la figure 2 représente une vue de dessus plus détaillée des deux parties assemblées du marteau selon l'invention pour un mécanisme de sonnerie d'une montre, et
  • la figure 3 représente une vue partielle en coupe selon la ligne III-III de la figure 2 du marteau selon l'invention pour un mécanisme de sonnerie d'une montre.
The purposes, advantages and characteristics of the hammer for a striking mechanism of a watch will appear better in the following description especially with reference to the drawings in which:
  • the figure 1 represents in a simplified manner a striking mechanism of a watch, which is provided with a hammer according to the invention for striking a stamp of the striking mechanism,
  • the figure 2 represents a more detailed top view of the two assembled parts of the hammer according to the invention for a striking mechanism of a watch, and
  • the figure 3 represents a partial sectional view along the line III-III of the figure 2 hammer according to the invention for a striking mechanism of a watch.

Dans la description suivante, toutes les parties du mécanisme de sonnerie d'une montre, qui est muni notamment d'un marteau pour frapper au moins un timbre, qui sont bien connues dans ce domaine technique, ne seront décrites que sommairement.In the following description, all parts of the striking mechanism of a watch, which is provided in particular with a hammer to hit at least one stamp, which are well known in this technical field, will be described only summarily.

A la figure 1, il est représenté de manière simplifiée un mécanisme de sonnerie 1, qui comprend au moins un timbre 11 relié à un porte-timbre 12, qui peut être fixé sur une platine du mécanisme de sonnerie non représentée. Un marteau 2 du mécanisme de sonnerie est monté rotatif autour d'un axe 7 sur la platine à proximité du porte-timbre 12. Ce marteau permet de frapper ledit timbre 11 afin de produire un son pour signaler par exemple les heures, les minutes ou une heure programmée d'alarme. Le timbre 11 peut être réalisé sous la forme d'une portion de cercle par exemple au moyen d'un fil métallique généralement en acier, ou également dans un métal précieux ou en verre métallique. Cette portion de cercle entoure traditionnellement une partie du mouvement de montre non représentée.To the figure 1 , it is represented in simplified manner a striking mechanism 1, which comprises at least one stamp 11 connected to a stamp holder 12, which can be fixed on a plate of the not shown striking mechanism. A hammer 2 of the striking mechanism is rotatably mounted about an axis 7 on the plate near the stamp holder 12. This hammer is used to hit the stamp 11 to produce a sound to signal for example the hours, minutes or a scheduled alarm time. The stamp 11 can be made in the form of a circle portion for example by means of a wire generally made of steel, or also in a precious metal or metal glass. This portion of a circle traditionally surrounds part of the unrepresented watch movement.

Le marteau 2 comprend généralement deux parties 2' et 2", qui sont fixées l'une à l'autre. Une première partie d'impact 2' du marteau est constituée d'un matériau plus dur que de l'acier trempé et de masse volumique importante. Cette première partie d'impact 2', qui est de préférence réalisée en métal dur, est utilisée pour frapper par une arête arrondie 2a au moins un timbre 11 du mécanisme de sonnerie 1. Une seconde partie constitue un talon 2" par l'intermédiaire duquel le marteau 2 peut être monté sur une platine du mécanisme de sonnerie. Ce talon 2" est de préférence réalisé en matériau métallique, tel qu'en acier trempé. La fixation de la première partie d'impact 2' au talon métallique 2" est avantageusement réalisée par brasure ou soudure comme expliqué ci-après en référence aux figures 2 et 3.The hammer 2 generally comprises two parts 2 'and 2 ", which are fixed to one another: a first impact part 2' of the hammer consists of a harder material than hardened steel and This first impact part 2 ', which is preferably made of hard metal, is used to strike by a rounded edge 2a at least one stamp 11 of the striking mechanism 1. A second part constitutes a heel 2 " through which the hammer 2 can be mounted on a plate of the striking mechanism. This bead 2 "is preferably made of a metallic material, such as hardened steel, The attachment of the first impact part 2 'to the metal bead 2" is advantageously carried out by brazing or welding, as explained hereinafter with reference to FIGS. Figures 2 and 3 .

Une tige de rotation 7 du marteau 2 sur la platine est de préférence chassée dans un trou traversant de diamètre légèrement inférieur au diamètre de la tige 7. Ce trou traversant est pratiqué dans une portion d'extrémité du talon métallique 2". Cette tige 7 peut être également réalisée en métal, tel qu'en acier trempé. Cette tige 7 est montée rotative sur une ouverture de la platine non représentée, pour former l'axe de rotation du marteau 2 sur la platine.A rotation rod 7 of the hammer 2 on the plate is preferably driven into a through hole of diameter slightly less than the diameter of the rod 7. This through hole is formed in an end portion of the metal heel 2 ". may also be made of metal, such as hardened steel.This rod 7 is rotatably mounted on an opening of the not shown plate, to form the axis of rotation of the hammer 2 on the plate.

Bien entendu, la tige de rotation 7 peut également être rivée ou collée sur ou à travers un trou d'une portion d'extrémité du talon métallique 2". Cette tige peut également venir de matière avec le talon métallique pour ne former qu'une seule pièce.Of course, the rotation rod 7 can also be riveted or glued on or through a hole of an end portion of the metal bead 2. This rod can also be made of material with the metal bead to form only one. single piece.

Pour le mécanisme de sonnerie 1, la première portion d'impact 2' du marteau 2 est maintenue au repos à une certaine distance du timbre 11 par un ensemble amortisseur 4, 4a et 5. Cet ensemble amortisseur comprend de manière connue un levier 5 monté rotatif autour d'un axe 8 fixé à la platine du mécanisme de sonnerie de la montre, et une roue 4 de réglage. Une goupille 4a est placée décentrée sur la roue de réglage. Cette goupille est en contact d'une surface d'une première extrémité en forme de came du levier. L'autre extrémité arquée du levier 5 maintient le marteau 2 par l'intermédiaire d'une goupille d'entraînement 6 dans une position de repos. Cette goupille d'entraînement 6 est fixée sur le talon métallique 2" du marteau. Cette goupille d'entraînement peut avantageusement être chassée dans un trou traversant pratiqué dans le talon entre la tige 7 et la première partie d'impact 2'. La distance au repos entre l'arête arrondie 2a de la première portion d'impact 2' du marteau et le timbre 11 peut être réglée au moyen de la roue 4 avec la goupille décentrée 4a en contact de la surface de la première extrémité du levier 5.For the striking mechanism 1, the first impact portion 2 'of the hammer 2 is kept at rest at a distance from the stamp 11 by a damping assembly 4, 4a and 5. This damping assembly comprises in known manner a mounted lever 5 rotating around an axis 8 fixed to the plate of the striking mechanism of the watch, and a wheel 4 of adjustment. A pin 4a is placed off-center on the adjusting wheel. This pin is in contact with a surface of a first cam-shaped end of the lever. The other arcuate end of the lever 5 holds the hammer 2 by via a drive pin 6 in a rest position. This driving pin 6 is fastened to the metal bead 2 "of the hammer, which can advantageously be driven into a through hole made in the bead between the rod 7 and the first impact portion 2 '. at rest between the rounded edge 2a of the first impact portion 2 'of the hammer and the stamp 11 can be adjusted by means of the wheel 4 with the off-center pin 4a in contact with the surface of the first end of the lever 5.

Pour produire une vibration du timbre frappé, le marteau 2 est poussé brusquement sur sa goupille d'entraînement 6 en direction du timbre 11 par une extrémité libre d'un ressort 3. Ce ressort 3 est au préalable armé par l'intermédiaire d'une levée non représentée. L'ensemble amortisseur, notamment la partie arquée du levier 5 qui peut fléchir, doit en outre être réalisé de telle manière à empêcher un double choc du marteau contre le timbre suite à l'action du ressort armé 3. Pour ce faire, l'ensemble amortisseur peut être réalisé par exemple en métal dur dont le module d'élasticité est environ le triple de celui de l'acier trempé traditionnel. La déformation élastique de l'amortisseur est trois fois plus faible pour une contrainte donnée.To produce a vibration of the struck stamp, the hammer 2 is pushed sharply on its drive pin 6 towards the stamp 11 by a free end of a spring 3. This spring 3 is previously armed via a not shown. The damping assembly, in particular the arcuate part of the lever 5 which can flex, must also be made in such a way as to prevent a double impact of the hammer against the stamp as a result of the action of the reinforced spring 3. To do this, the damper assembly can be made for example of hard metal whose modulus of elasticity is about triple that of traditional hardened steel. The elastic deformation of the damper is three times lower for a given stress.

Selon l'invention, la première partie d'impact 2' du marteau 2 est réalisée dans un matériau plus dur que l'acier trempé, qui est d'une dureté de l'ordre de 650 HV. Ce matériau à grande dureté peut avantageusement être un métal dur de dureté supérieure à 1'000 HV. Un exemple de métal dur est le carbure de tungstène cobalt (WCCo), qui a une dureté de l'ordre de 1'540 HV.According to the invention, the first impact portion 2 'of the hammer 2 is made of a material harder than hardened steel, which has a hardness of the order of 650 HV. This high hardness material may advantageously be a hard metal of hardness greater than 1,000 HV. An example of a hard metal is cobalt tungsten carbide (WCCo), which has a hardness of the order of 1,540 HV.

Le matériau de cette première partie d'impact 2' dudit marteau 2 doit être également de masse volumique élevée pour obtenir une masse inertielle importante du marteau. Cette masse volumique doit être supérieure à celle de l'acier trempé qui est de l'ordre de 8'000 kg/m3. Avec une masse volumique importante du matériau choisi de la première partie d'impact 2', par exemple supérieure à 10'000 kg/m3, cela permet d'augmenter l'énergie lors de l'impact du marteau 2 contre le timbre 11 selon une vitesse donnée du marteau. De préférence, la masse volumique du matériau choisi, tel que du métal dur, doit être au moins entre 1.5 à 2 fois supérieure à celle de l'acier trempé, par exemple égale ou supérieure à 14'700 kg/m3.The material of this first impact part 2 'of said hammer 2 must also be of high density to obtain a large inertial mass of the hammer. This density must be greater than that of hardened steel which is of the order of 8,000 kg / m 3 . With a large density of the material selected from the first impact part 2 ', for example greater than 10'000 kg / m 3 , this allows to increase the energy at the impact of the hammer 2 against the stamp 11 at a given speed of the hammer. Preferably, the density of the material chosen, such as hard metal, must be at least 1.5 to 2 times greater than that of hardened steel, for example equal to or greater than 14,700 kg / m 3 .

La première partie d'impact 2' du marteau 2 peut encore être réalisée avec un matériau dur, dont le module d'élasticité est supérieur à celui de l'acier trempé, qui est de l'ordre de 220 GPa. De préférence, ce module d'élasticité du matériau utilisé pour fabriquer le marteau peut être supérieur à 500 GPa, notamment supérieur ou égal à 630 GPa. Avec un grand module d'élasticité du matériau du marteau 2, il est possible de minimiser la déformation élastique du marteau lors du choc contre le timbre pour une contrainte donnée. Ceci permet également de minimiser les pertes internes dues à la déformation. Avec un tel matériau constituant la première partie d'impact 2' du marteau, le niveau acoustique du son produit par le timbre 11 frappé par le marteau est augmenté, ce qui est recherché.The first impact part 2 'of the hammer 2 can still be made of a hard material whose modulus of elasticity is greater than that of hardened steel, which is of the order of 220 GPa. Preferably, this modulus of elasticity of the material used to make the hammer may be greater than 500 GPa, especially greater than or equal to 630 GPa. With a large modulus of elasticity of the material of the hammer 2, it is possible to minimize the elastic deformation of the hammer during impact against the stamp for a given stress. This also minimizes internal losses due to deformation. With such a material constituting the first impact part 2 'of the hammer, the acoustic level of the sound produced by the stamp 11 hit by the hammer is increased, which is desired.

Pour bien expliquer la réalisation d'un tel marteau, on se réfère maintenant aux figures 2 et 3, qui représentent d'une part les deux parties 2' et 2" assemblées du marteau 2 en vue de dessus, et d'autre part une coupe partielle du marteau 2 selon la ligne III-III de la figure 2.To explain the realization of such a hammer, we now refer to Figures 2 and 3 , which represent on the one hand the two parts 2 'and 2 "assembled of the hammer 2 in plan view, and on the other hand a partial section of the hammer 2 along line III-III of the figure 2 .

A la figure 2, le marteau hybride 2 comprend essentiellement deux parties 2' et 2" assemblées l'une à l'autre. De préférence, la première partie d'impact 2' du marteau est réalisée dans un matériau plus dur que de l'acier trempé traditionnellement utilisé pour la réalisation d'un marteau d'un mécanisme de sonnerie d'une montre. Cette première partie d'impact 2' est de préférence un métal dur, tel que du carbure de tungstène cobalt (WCCo), qui a une dureté de l'ordre de 1'540 HV et de masse volumique supérieure à 14'700 kg/m3. Pour obtenir une masse inertielle importante du marteau 2, la première partie d'impact 2' doit être d'un volume plus important que le volume de la seconde partie, qui est un talon métallique 2". Cette première partie d'impact 2' en métal dur peut avantageusement être brasée ou soudée sur le talon métallique 2" du marteau. Le bord du talon métallique 2" et la portion d'assemblage de la première partie d'impact 2' sont représentés par les deux lignes parallèles en traits interrompus sur cette figure 2.To the figure 2 the hybrid hammer 2 essentially comprises two parts 2 'and 2 "joined to each other Preferably the first impact part 2' of the hammer is made of a harder material than traditionally hardened steel This first impact part 2 'is preferably a hard metal, such as cobalt tungsten carbide (WCCo), which has a hardness of about 50.degree. the order of 1'540 HV and density greater than 14'700 kg / m 3. To obtain a large inertial mass of the hammer 2, the first impact part 2 'must be of a greater volume than the volume of the second part, which is a metal heel 2 ". This first impact part 2 'of hard metal can advantageously be brazed or welded to the metal bead 2 "of the hammer, the edge of the metal bead 2" and the connecting portion of the first impact part 2 'are represented by the two parallel lines in broken lines on this figure 2 .

Comme la première partie d'impact 2' est en métal dur, cette première partie d'impact est difficile à travailler et peut être cassante. Cette première partie d'impact est donc avantageusement brasée ou soudée au talon métallique 2" notamment en acier trempé dans lequel il est plus facile de réaliser des trous pour fixer une tige de rotation ou goupille d'entraînement. La portion d'assemblage de la première partie d'impact 2' est tout d'abord brasée ou soudée sur un bord du talon métallique 2". Par la suite, il est facile de réaliser un premier trou 7' pour recevoir une tige de rotation du marteau sur la platine, et un second trou 6' pour recevoir une goupille d'entraînement du marteau. Ces deux trous 6' et 7' sont bien positionnés et bien orientés par rapport au corps principal du marteau 2 en fonction de la position de la première partie d'impact fixée sur le talon métallique.Since the first impact part 2 'is made of hard metal, this first impact part is difficult to work with and can be brittle. This first impact part is therefore advantageously brazed or welded to the metal bead 2 "in particular hardened steel in which it is easier to make holes to fix a rotating rod or drive pin. first impact portion 2 'is first brazed or welded to an edge of the metal heel 2 ". Subsequently, it is easy to make a first hole 7 'to receive a hammer rotation rod on the plate, and a second hole 6' to receive a hammer drive pin. These two holes 6 'and 7' are well positioned and well oriented relative to the main body of the hammer 2 according to the position of the first impact part fixed on the metal heel.

A la figure 3, il est bien représenté la portion d'assemblage de la première partie d'impact 2' soudée ou brasée par un matériau métallique 14 sur un bord du talon métallique 2". La portion d'assemblage de la première partie d'impact 2' se présente sous la forme d'un cran 13, qui est constitué principalement de deux surfaces planes disposées par exemple perpendiculairement l'une par rapport à l'autre. Cette portion d'assemblage est brasée ou soudée sur un bord de forme complémentaire, qui comprend deux surfaces par exemple à angle droit, du talon métallique 2". Pour faciliter le positionnement, ainsi que la fixation par brasure ou soudure de la première partie d'impact 2' sur le talon métallique 2", une rainure intérieure 15 est réalisée dans un angle du cran 13 de la portion d'assemblage de la première partie d'impact.To the figure 3 , it is well represented the assembly portion of the first impact portion 2 'welded or brazed by a metal material 14 on an edge of the metal bead 2. The assembly portion of the first impact part 2' is in the form of a notch 13, which consists mainly of two flat surfaces arranged for example perpendicular to one another.This assembly portion is brazed or welded to a complementary shaped edge, which comprises two surfaces, for example at right angles, metal heel 2 ". To facilitate the positioning, as well as the solder or solder attachment of the first impact portion 2 'to the metal bead 2 ", an inner groove 15 is formed in an angle of the notch 13 of the assembly portion of the first part of impact.

Bien entendu, la forme du bord ou de la portion d'assemblage peut être différente de celle décrite ci-devant pour autant qu'il soit facile de fixer par brasure ou soudure ou par un autre moyen la première partie d'impact 2' sur le talon métallique 2". Il pourrait être envisagé de visser la première partie d'impact sur le talon métallique, mais cela nécessite de pratiquer avec difficulté au moins un trou dans le matériau dur de la première partie d'impact. De plus, la fixation de la première partie d'impact sur le talon métallique peut être effectuée par une fixation par queue d'aronde.Of course, the shape of the edge or the assembly portion may be different from that described above as far as it is easy to fix by brazing or welding or by some other means the first impact part 2 'on the metal heel 2 ". It could be envisaged to screw the first impact part on the metal heel, but this requires difficulty with at least a hole in the hard material of the first impact part.In addition, the attachment of the first impact part on the metal heel can be performed by a dovetail attachment.

Une fois que la première partie d'impact 2' est fixée sur le talon métallique 2", les trous 6' et 7' sont pratiqués dans le talon pour recevoir la goupille d'entraînement 6 et la tige de rotation 7. De préférence, la goupille chanfreinée 6 et la tige chanfreinée de rotation 7 sont chassées dans chaque trou correspondant 6' et 7' de diamètre légèrement inférieur. La goupille 6 et la tige 7 peuvent également être collées dans chaque trou correspondant ou sur le talon sans effectuer de trous, ou aussi rivées sur le talon métallique. Dans la mesure du possible, il peut aussi être envisagé de réaliser la goupille et la tige venant de matière avec le talon métallique avant la fixation dudit talon 2" avec la première partie d'impact 2'.Once the first impact portion 2 'is attached to the metal bead 2 ", the holes 6' and 7 'are formed in the bead to receive the driving pin 6 and the rotation rod 7. Preferably, the chamfered pin 6 and the chamfered rotary rod 7 are driven into each corresponding hole 6 'and 7' of slightly smaller diameter The pin 6 and the rod 7 can also be glued into each corresponding hole or on the heel without making any holes or, as far as possible, it may also be envisaged to make the pin and the rod coming from material with the metal heel before fixing said heel 2 "with the first impact part 2 '. .

A partir de la description qui vient d'être faite, plusieurs variantes de réalisation du marteau pour un mécanisme de sonnerie d'une montre mécanique ou électro-mécanique peuvent être conçues par l'homme du métier sans sortir du cadre de l'invention définie par les revendications. Le matériau dur de la première partie d'impact du marteau peut être également de la céramique ou du diamant, mais dans ces conditions, une masse additionnelle doit être placée sur la première partie.From the description that has just been given, several embodiments of the hammer for a striking mechanism of a mechanical or electromechanical watch can be designed by those skilled in the art without departing from the scope of the invention defined by the claims. The hard material of the first impact part of the hammer may also be ceramic or diamond, but under these conditions, an additional mass must be placed on the first part.

Claims (13)

Marteau (2) pour un mécanisme de sonnerie (1) d'une montre, qui comprend au moins un timbre (11) susceptible d'être frappé par ledit marteau pour produire un son, caractérisé en ce que la marteau comprend deux parties fixées l'une à l'autre, une première partie étant constituée d'un matériau plus dur que de l'acier trempé pour constituer une partie d'impact (2') du marteau contre un timbre (11) du mécanisme de sonnerie, alors qu'une seconde partie est un talon (2") par l'intermédiaire duquel le marteau peut être monté sur une platine du mécanisme de sonnerie.Hammer (2) for a striking mechanism (1) of a watch, which comprises at least one stamp (11) capable of being struck by said hammer to produce a sound, characterized in that the hammer comprises two fixed parts l to one another, a first part being made of a harder material than hardened steel to constitute an impact part (2 ') of the hammer against a stamp (11) of the striking mechanism, whereas a second part is a heel (2 ") through which the hammer can be mounted on a plate of the striking mechanism. Marteau (2) selon la revendication 1, caractérisé en ce que la première partie d'impact (2') du marteau est réalisée en métal dur, et en ce que la première partie d'impact (2') est fixée par soudure ou brasure sur le talon métallique (2").Hammer (2) according to claim 1, characterized in that the first impact part (2 ') of the hammer is made of hard metal, and in that the first impact part (2') is fixed by welding or solder on the metal heel (2 "). Marteau (2) selon la revendication 2, caractérisé en ce que la première partie d'impact (2') du marteau est constituée d'un métal dur ayant une dureté supérieure à 1'000 HV, de préférence supérieure à 1'500 HV.Hammer (2) according to claim 2, characterized in that the first impact part (2 ') of the hammer consists of a hard metal having a hardness greater than 1'000 HV, preferably greater than 1'500 HV . Marteau (2) selon l'une des revendications précédentes, caractérisé en ce que le matériau de la première portion d'impact (2') du marteau est du carbure de tungstène-cobalt.Hammer (2) according to one of the preceding claims, characterized in that the material of the first impact portion (2 ') of the hammer is tungsten-cobalt carbide. Marteau (2) selon la revendication 1, caractérisé en ce que la masse volumique du matériau de la première partie d'impact (2') du marteau est supérieure à 10'000 kg/m3, de préférence égale ou supérieure à 14'700 kg/m3.Hammer (2) according to claim 1, characterized in that the density of the material of the first impact part (2 ') of the hammer is greater than 10'000 kg / m 3 , preferably equal to or greater than 14' 700 kg / m 3 . Marteau (2) selon la revendication 1, caractérisé en ce que le module d'élasticité de la première partie d'impact (2') en métal dur du marteau est supérieur à 220 GPa, de préférence égal ou supérieur à 630 GPa.Hammer (2) according to claim 1, characterized in that the modulus of elasticity of the first hammer hard metal impact part (2 ') is greater than 220 GPa, preferably equal to or greater than 630 GPa. Marteau (2) selon l'une des revendications précédentes, caractérisé en ce que le talon métallique (2") est réalisé en acier, et en ce qu'une tige (7) est chassée, rivée ou collée sur ou à travers une portion d'extrémité du talon métallique (2") pour servir d'axe de rotation du marteau, lorsqu'il est monté sur une platine du mécanisme de sonnerie.Hammer (2) according to one of the preceding claims, characterized in that the metal bead (2 ") is made of steel, and in this case that a rod (7) is driven, riveted or glued to or through an end portion of the metal bead (2 ") to serve as an axis of rotation of the hammer, when mounted on a plate of the mechanism alarm. Marteau (2) selon l'une des revendications 1 à 6, caractérisé en ce qu'une tige de rotation (7) du marteau vient de matière avec le talon métallique (2"), et en ce que le talon métallique et la tige de rotation sont réalisés en acier trempé.Hammer (2) according to one of claims 1 to 6, characterized in that a rotation rod (7) of the hammer is made of material with the metal heel (2 "), and in that the metal heel and the rod of rotation are made of hardened steel. Marteau (2) selon l'une des revendications 7 et 8, caractérisé en ce qu'une goupille (6) d'entraînement du marteau est chassée ou rivée ou collée sur ou à travers le talon métallique (2") parallèlement à la tige de rotation du marteau et entre la tige de rotation (7) et la première partie d'impact (2') du marteau.Hammer (2) according to one of claims 7 and 8, characterized in that a pin (6) driving the hammer is driven or riveted or glued on or through the metal heel (2 ") parallel to the rod of rotation of the hammer and between the rotation rod (7) and the first impact part (2 ') of the hammer. Marteau (2) selon l'une des revendications 7 et 8, caractérisé en ce qu'une goupille (6) d'entraînement du marteau vient de matière avec le talon métallique (2"), ladite goupille étant parallèle à la tige de rotation (7) du marteau et entre la tige de rotation et la première partie d'impact (2') du marteau.Hammer (2) according to one of claims 7 and 8, characterized in that a pin (6) for driving the hammer comes from material with the metal heel (2 "), said pin being parallel to the rod rotation (7) of the hammer and between the rotation rod and the first impact part (2 ') of the hammer. Marteau (2) selon l'une des revendications précédentes, caractérisé en ce que la première partie d'impact (2') est d'un volume plus grand que le volume du talon métallique (2").Hammer (2) according to one of the preceding claims, characterized in that the first impact part (2 ') is of a larger volume than the volume of the metal bead (2 "). Marteau (2) selon l'une des revendications 2 à 11, caractérisé en ce que la première partie d'impact (2') du marteau comprend une portion d'assemblage sous la forme d'un cran (13), qui est constitué principalement de deux surfaces planes disposées perpendiculairement l'une par rapport à l'autre, la portion d'assemblage étant brasée ou soudée sur un bord de forme complémentaire, qui comprend deux surfaces à angle droit, du talon métallique (2").Hammer (2) according to one of claims 2 to 11, characterized in that the first impact part (2 ') of the hammer comprises an assembly portion in the form of a notch (13), which is constituted mainly two plane surfaces arranged perpendicular to each other, the joining portion being brazed or welded to a complementary shaped edge, which comprises two surfaces at right angles, the metal heel (2 "). Marteau (2) selon la revendication 12, caractérisé en ce qu'une rainure intérieure (15) est réalisée dans un angle du cran (13) de la portion d'assemblage de la première partie d'impact (2') pour faciliter le positionnement et la fixation par brasure ou soudure (14) de la première partie d'impact sur le talon métallique (2").Hammer (2) according to claim 12, characterized in that an internal groove (15) is formed in a notch angle (13) of the connecting portion of the first impact part (2 ') to facilitate the positioning and fixing by brazing or welding (14) the first impact part on the metallic heel (2 ").
EP10154766.9A 2010-02-26 2010-02-26 Hammer for a stricking mechanism of a watch Active EP2362278B1 (en)

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Application Number Priority Date Filing Date Title
EP10154766.9A EP2362278B1 (en) 2010-02-26 2010-02-26 Hammer for a stricking mechanism of a watch
US13/035,171 US8565046B2 (en) 2010-02-26 2011-02-25 Hammer for a watch striking mechanism
CN2011100460961A CN102169324B (en) 2010-02-26 2011-02-25 Hammer for a striking mechanism of a watch
JP2011041525A JP5200127B2 (en) 2010-02-26 2011-02-28 Hammer for watch timing mechanism

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EP2362278B1 EP2362278B1 (en) 2016-10-12

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EP (1) EP2362278B1 (en)
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EP2660662A2 (en) 2012-05-02 2013-11-06 Patek Philippe SA Genève Alarm mechanism

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CN102169324A (en) 2011-08-31
JP5200127B2 (en) 2013-05-15
JP2011180139A (en) 2011-09-15
CN102169324B (en) 2013-08-21
US20110211426A1 (en) 2011-09-01
US8565046B2 (en) 2013-10-22
EP2362278B1 (en) 2016-10-12

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