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EP2660662B1 - Striking mechanism - Google Patents

Striking mechanism Download PDF

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Publication number
EP2660662B1
EP2660662B1 EP13002121.5A EP13002121A EP2660662B1 EP 2660662 B1 EP2660662 B1 EP 2660662B1 EP 13002121 A EP13002121 A EP 13002121A EP 2660662 B1 EP2660662 B1 EP 2660662B1
Authority
EP
European Patent Office
Prior art keywords
hammer
cocking
striking
gong
mobile
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
EP13002121.5A
Other languages
German (de)
French (fr)
Other versions
EP2660662A3 (en
EP2660662A2 (en
Inventor
Jan MÜNCH
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.)
Patek Philippe SA Geneve
Original Assignee
Patek Philippe SA Geneve
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 Patek Philippe SA Geneve filed Critical Patek Philippe SA Geneve
Publication of EP2660662A2 publication Critical patent/EP2660662A2/en
Publication of EP2660662A3 publication Critical patent/EP2660662A3/en
Application granted granted Critical
Publication of EP2660662B1 publication Critical patent/EP2660662B1/en
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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
    • G04B21/10—Releasing or locking the regular stroke, e.g. for silence during the night
    • 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
    • G04B21/12—Reiterating watches or clocks
    • 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
    • G04B23/025—Signal triggering
    • 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
    • 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

Definitions

  • the hammer or hammers in rest mode are maintained in a position for which their striking zone is close to the gong, a counter-spring or damper, ensuring a rest position of the hammer slightly away from the gong, this so as not to damp the free vibrations of the gong.
  • the hammer driving spring is disarmed.
  • a ringing gear When the ringing is triggered, a ringing gear is released so that the hammer is rotated to arm its drive spring until the moment when the winding of said spring is complete, the hammer is released and falls on the gong under the action of its drive spring.
  • this ringing gear has a speed regulator.
  • Such striking mechanisms are for example described in documents EP 2,362,278 , EP 2,362,279 , EP 2,048,548 , EP 2 339 412 , CH 702 721 or US 587,574 . It can thus be seen that throughout the evolution of striking mechanisms in the rest position of the mechanism, the hammer is in the immediate vicinity of the gong and its drive spring is not armed. It is when the bell is triggered that the hammer is moved back and its spring loaded and released for striking.
  • the ringing therefore does not occur at the exact moment desired but with a certain delay.
  • Another drawback of the existing ringing mechanisms lies in the complexity of the ringing gear which comprises in particular a speed regulator consuming a non-negligible part of the energy available to actuate the ringing.
  • the objects of the present invention are, taken separately or in combination, to simplify the striking gear, to allow the elimination of the counter-spring or of the damper so as to allow better transmission of energy from the hammer to the gong and to 'improve the accuracy of the ringing, that is to say, to allow the gong to be struck with the hammer at a predetermined time with great precision.
  • the drive spring 6 is integral with a heel 6.2 pivoted on the plate 2 of the movement around an axis or pin 6.3.
  • An eccentric E pivoted in the plate 2 serves as a stop for the heel 6.2 of the spring 6.
  • the angular position of the eccentric E makes it possible to adjust the angular position of the heel 6.3 and therefore the force applied by the spring 6 on the hammer 3.
  • the heel 6.3 of the drive spring 6 could be fixed without possibility of adjustment on the plate 2 or fixed on the plate in an adjustable manner by other means.
  • This striking mechanism also comprises a device for winding the driving spring 6 of the hammer 3 comprising a winding wheel consisting of in this first embodiment of the mechanism by a winding wheel 8 comprising a set of teeth formed by teeth 8.1 at its periphery.
  • This winding wheel 8 is pivoted on the plate 2 of the movement and is integral with a pinion 9 meshing with a toothed wheel 10 integral with the cage of a barrel comprising a motor spring (not illustrated).
  • This barrel can be the motor barrel of the clockwork movement or the barrel dedicated to the striking mechanism and the kinematic connection connecting this barrel to the winding mobile 8 can be of any nature other than that described and illustrated here.
  • This striking mechanism also comprises a device for locking the winding device constituted in this example by a lever 11 pivoted at 11.1 on the plate and a first end 11.2 of which cooperates with the teeth 8.1 of the winding wheel 8 while the second end 11.3 is placed in a notch 14 that comprises the hub of the hammer 3.
  • This notch 14 is located in the immediate vicinity of the tooth 7 of the hammer 3. The blank of this tooth 7 opposite to that coming into contact with the spring of drive 6 forms one side of said notch 14.
  • the winding device of the drive spring 6 of the hammer 3 further comprises a winding lever 12 pivoted on the hammer at 12.1 in a manner that is not coaxial with the pivot axis 4 of the hammer 3.
  • This winding lever 12 comprises two pins 12.2, 12.3 serving as stops for a flexible guide 13 fixed by one of its ends on the plate 2.
  • This flexible guide is positioned so as to intersect the pivot axis 12.2 of the winding lever 12 on the hammer and to extend between the two pins 12.2, 12.3 of the lever 12.
  • the direction of the flexible guide is such that it passes through the top of the teeth 8.1 of the winding wheel 8 and through the pivot axis 12.1 of the winding lever 12.
  • the flexible guide 13 formed of a flexible blade is positioned at rest parallel to the plate 2 and in a plane perpendicular to the plate 2 passing through the pivot axis 12.1 of the winding lever 1 and the end of a tooth 8.1 of the winding wheel 8.
  • the rest position corresponds to a position of the hammer 3 for which its striking nose 5 is remote from the gong 1 and for which its drive spring is loaded. There is therefore no longer any need to provide a counter-spring to prevent the hammer from inadvertently coming into contact with the gong in the rest position of the striking mechanism, either for example bouncing of the hammer or ringing under the shock effect.
  • a trigger mechanism causing a movement or several successive movements of the free end of the flexible guide 13 in the clockwise direction.
  • Such a mechanism will not be described here but it is shown schematically by a rake 15 capable of pivoting and causing movement of the free end of the flexible guide 13.
  • the mechanism is thus again in the rest position ( figure 1 ) for which the hammer 3 is moved away from the gong and the hammer drive spring 6 3 is charged.
  • the rake 15 can either be actuated again by one step by the triggering device of the striking mechanism to sound an additional blow, or be demoted to the rest position.
  • This mechanism is simple, it requires few parts, the striking gear is small and does not include a speed regulator. This mechanism also does not include a counter spring or damper for the hammer 3.
  • the locking device formed by the locking lever 11 makes it possible, when the striking mechanism is in the rest state, to maintain the drive spring 6 in the armed position and to maintain the hammer 3 in a position for which its part 5 intended to strike the stamp 1 is remote from the latter.
  • the winding wheel 8 can be produced in another form, for example a winding mobile having the shape of a toothed sector connected to the barrel cage by a one-way clutch. Its connection to the barrel can also be made differently.
  • the device blocking of the winding device can also be achieved other than with a locking lever.
  • the release element formed by the rake 15 in this embodiment can also be made differently; it is, on the other hand, always controlled by the clockwork movement or by a manual triggering member such as a pusher.
  • the striking mechanism does not need to include a counter-spring or damper to prevent the hammer at rest from coming into abutment against the gong under the action of shocks that the part may undergo. watchmaking. It also does not have a cruise control.
  • the striking mechanism is simpler and above all makes it possible to transmit a maximum of energy to the gong when the hammer is struck on this gong, the loss of energy due to the counter-spring or damper being eliminated.
  • the ringing is done immediately after its triggering, the time required for winding the hammer drive spring being eliminated.
  • This second embodiment of the striking mechanism also comprises a device for winding the driving spring 6 of the hammer 3 comprising a winding mobile constituted by a winding wheel 8 pivoted on the plate 2 and comprising a toothing formed of teeth 8.1.
  • This winding wheel 8 is integral with a pinion 9 meshing with a toothed wheel 10 integral with or kinematically connected to the cage of a barrel and therefore to the motor spring of the movement (not shown).
  • This barrel can be the motor barrel of the clockwork movement or a barrel dedicated to the striking mechanism and the kinematic link connecting this barrel to the winding mobile 8 can be of any nature other than that described here.
  • This winding device also comprises a winding member 20 comprising a heel 20.1 fixed by a screw 20.2 and a pin 20.3 on the hammer 3.
  • This winding member 20 also comprises a leaf spring 20.4 whose end has the shape a hook 20.5. The inherent elasticity of this leaf spring tends to apply the hook 20.5 against a tooth 8.1 of the winding wheel 8.
  • This striking mechanism also comprises a device for locking the winding device comprising a trigger 21 pivoted at 21.1 on the plate 2 and the end of which 21.2 is engaged in a notch 22 which the hub of the hammer 3.
  • This trigger comprises a vane 21.4 intended to cooperate with the teeth 8.1 of the winding wheel 8.
  • This vane 21.4 extends perpendicularly out of the plane of the trigger 21.
  • the triggering mechanism of the striking mechanism comprises a triggering wheel 23 having sawtooth toothing. This trigger wheel is driven by the clockwork movement or by a usual striking mechanism by a determined number of steps when the striking must be activated.
  • This trigger mechanism also comprises a trigger lever 24, pivoted at 24.1 on the plate 2, which comprises a first arm 24.2 whose end 24.3 cooperates with the wolf tooth teeth of the trigger wheel 23 and a second arm 24.4 the end of which cooperates with an extension of the hook 20.5 extending below the winding wheel 8.
  • this lever 24 is subjected to the action of a return spring 25 tending to hold the first arm 24.2 of this rocker 24 against a stop 26, in the rest position for which the end 24.3 of the first arm 24.2 of the rocker 24 is located in the path of the teeth of the trigger wheel 23 and for which the end of the second arm 24.4 of the rocker 24 is not in contact with the extension of the hook 20.5.
  • the trigger wheel 23 is driven by a power take-off of the clockwork movement or by a trigger mechanism controlled by the clockwork movement of one or more steps.
  • a tooth moves the first arm 24.3 of the trigger lever 24 clockwise against the action of its return spring 25.
  • the end of the second arm 24.4 of the lever trigger 24 pushes the extension of hook 20.5 of the winding member 20 ( figure 8 ) so that this hook 20.5 escapes tooth 8.1 of winding wheel 8.
  • Hammer 3 begins to fall in the direction of gong 1 ( figure 9 ).
  • the end 21.2 of the trigger 21 is moved counterclockwise by the hub of the hammer 3 which releases the winding wheel, the vane 21.4 escaping from the tooth 8.1, while the hammer 3 is driven by its spring drive 6 towards the timbre ( figure 10 ).
  • the hammer 3 strikes the gong and the trigger lever escapes the teeth of the trigger wheel 23 and comes back to bear against its stop 26 under the action of its return spring 25 ( figure 11 ).
  • the hammer 3 bounces counterclockwise, this movement away from the gong is supported by the action of the winding wheel 8 cooperating with the winding member 20 of the hammer 3: the winding wheel 8 turns clockwise and one of its teeth 8.1 catches the hook 20.5 of the winding member 20 and pulls the hammer counterclockwise while charging its drive spring 6 ( figure 12 ).
  • the paddle 21.4 of the trigger 20 is repositioned by the notch 22 of the hub of the hammer 3 on the path of the teeth 8.1 of the winding wheel. Once a tooth 8.1 of the winding wheel 8 comes to rest on the pallet 21.4 of the trigger 21, the striking mechanism is again in the rest position, the hammer 3 being away from the gong and its spring. training being armed again ( figure 7 ).
  • This operation is repeated for each triggering of the flip-flop 24 in the clockwise direction.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Electromechanical Clocks (AREA)
  • Toys (AREA)

Description

La présente invention se rapporte aux mécanismes de sonnerie du mouvement d'une pièce d'horlogerie telle qu'une montre bracelet, une montre de poche ou une pendulette qui comporte :

  • un timbre,
  • un marteau agencé pour qu'une partie de celui-ci vienne frapper le timbre en mode de sonnerie du mécanisme de sonnerie,
  • un ressort d'entraînement du marteau agissant directement ou indirectement sur le marteau pour le projeter contre le timbre dans un mode de sonnerie du mécanisme de sonnerie pour produire un son.
The present invention relates to the striking mechanisms of the movement of a timepiece such as a wristwatch, a pocket watch or a clock which comprises:
  • a stamp,
  • a hammer arranged so that part of it strikes the gong in the striking mode of the striking mechanism,
  • a hammer drive spring acting directly or indirectly on the hammer to project it against the gong in a striking mode of the striking mechanism to produce a sound.

Habituellement dans les mécanismes de sonnerie connus le ou les marteaux en mode repos sont maintenus dans une position pour laquelle leur zone de frappe est proche du timbre, un contre-ressort ou amortisseur, assurant une position de repos du marteau légèrement éloignée du timbre, ceci pour ne pas amortir les vibrations libres du timbre. Dans cette position du mode de repos du mécanisme de sonnerie le ressort d'entraînement du marteau est désarmé.Usually in known striking mechanisms, the hammer or hammers in rest mode are maintained in a position for which their striking zone is close to the gong, a counter-spring or damper, ensuring a rest position of the hammer slightly away from the gong, this so as not to damp the free vibrations of the gong. In this position of the rest mode of the striking mechanism, the hammer driving spring is disarmed.

Lorsque la sonnerie est déclenchée un rouage de sonnerie est libéré de sorte que le marteau soit entraîné en rotation pour armer son ressort d'entraînement jusqu'au moment ou l'armage dudit ressort étant complet, le marteau soit libéré et tombe sur le timbre sous l'action de son ressort d'entraînement. Généralement ce rouage de sonnerie comporte un régulateur de vitesse.When the ringing is triggered, a ringing gear is released so that the hammer is rotated to arm its drive spring until the moment when the winding of said spring is complete, the hammer is released and falls on the gong under the action of its drive spring. Usually this ringing gear has a speed regulator.

De tels mécanismes de sonnerie sont par exemple décrits dans les documents EP 2 362 278 , EP 2 362 279 , EP 2 048 548 , EP 2 339 412 , CH 702 721 ou US 587 574 . On voit ainsi que dans toute l'évolution des mécanismes de sonnerie dans la position de repos du mécanisme le marteau est à proximité immédiate du timbre et son ressort d'entraînement n'est pas armé. C'est au déclenchement de la sonnerie que le marteau est reculé et son ressort armé puis libéré pour la frappe.Such striking mechanisms are for example described in documents EP 2,362,278 , EP 2,362,279 , EP 2,048,548 , EP 2 339 412 , CH 702 721 or US 587,574 . It can thus be seen that throughout the evolution of striking mechanisms in the rest position of the mechanism, the hammer is in the immediate vicinity of the gong and its drive spring is not armed. It is when the bell is triggered that the hammer is moved back and its spring loaded and released for striking.

Ces mécanismes de sonnerie présentent des inconvénients. D'une part lors de la frappe du marteau sur le timbre il faut vaincre la force résistante du contre-ressort ou de l'amortisseur ce qui forcément diminue l'énergie transmise au timbre et réduit d'autant la puissance du son émis par le timbre. D'autre part comme suite au déclenchement de la sonnerie il faut armer le marteau, un temps non négligeable et pas forcément constant s'écoule entre le déclenchement et le retentissement de la sonnerie.These ringing mechanisms have drawbacks. On the one hand, when the hammer is struck on the gong, it is necessary to overcome the resistive force of the counter-spring or of the shock absorber, which necessarily reduces the energy transmitted to the gong and correspondingly reduces the power of the sound emitted by the gong. stamped. On the other hand, following the triggering of the bell, it is necessary to cock the hammer, a not insignificant and not necessarily constant time elapses between the triggering and the sounding of the bell.

La sonnerie ne survient donc pas au moment exact désiré mais avec un certain retard.The ringing therefore does not occur at the exact moment desired but with a certain delay.

Un autre inconvénient des mécanismes de sonnerie existant réside dans la complexité du rouage de sonnerie qui comprend notamment un régulateur de vitesse consommant une partie non négligeable de l'énergie disponible pour actionner la sonnerie.Another drawback of the existing ringing mechanisms lies in the complexity of the ringing gear which comprises in particular a speed regulator consuming a non-negligible part of the energy available to actuate the ringing.

Les buts de la présente invention sont, pris séparément ou en combinaison, de simplifier le rouage de sonnerie, de permettre la suppression du contre-ressort ou de l'amortisseur de manière à permettre une meilleure transmission d'énergie du marteau au timbre et d'améliorer la précision de la sonnerie, c'est-à-dire de permettre de frapper le timbre avec le marteau à un moment prédéterminé avec une grande précision.The objects of the present invention are, taken separately or in combination, to simplify the striking gear, to allow the elimination of the counter-spring or of the damper so as to allow better transmission of energy from the hammer to the gong and to 'improve the accuracy of the ringing, that is to say, to allow the gong to be struck with the hammer at a predetermined time with great precision.

La présente invention a pour objet un mécanisme de sonnerie tel que défini dans la revendication indépendante 1. Des réalisations préférées sont définies dans les revendications dépendantes. Les dessins annexés illustrent schématiquement et à titre d'exemple deux formes d'exécution du mécanisme de sonnerie selon l'invention.

  • La figure 1 illustre une première forme d'exécution du mécanisme de sonnerie à l'état de repos.
  • La figure 2 illustre le mécanisme de sonnerie de la figure 1 au moment du déclenchement de la sonnerie.
  • La figure 3 illustre le mécanisme de sonnerie de la figure 1 pendant la chute du marteau.
  • La figure 4 illustre le mécanisme de sonnerie de la figure 1 au moment du déclenchement du dispositif d'armage juste avant l'impact du marteau sur le timbre.
  • La figure 5 illustre le mécanisme de sonnerie de la figure 1 pendant le rebond du marteau sur le timbre.
  • La figure 6 illustre le mécanisme de sonnerie de la figure 1 pendant le réarmage du marteau et de son ressort d'entraînement.
  • La figure 7 illustre une seconde forme d'exécution du mécanisme de sonnerie à l'état de repos.
  • La figure 8 illustre le mécanisme de sonnerie de la figure 7 au moment du déclenchement de la sonnerie.
  • La figure 9 illustre le mécanisme de sonnerie de la figure 7 pendant la chute du marteau.
  • La figure 10 illustre le mécanisme de sonnerie de la figure 7 juste avant l'impact du marteau sur le timbre.
  • La figure 11 illustre le mécanisme de sonnerie de la figure 7 au moment de l'impact du marteau sur le timbre.
  • La figure 12 illustre le mécanisme de sonnerie de la figure 7 pendant le réarmage du marteau et de son ressort d'entraînement.
The present invention relates to a ringing mechanism as defined in independent claim 1. Preferred embodiments are defined in the dependent claims. The accompanying drawings illustrate schematically and by way of example two embodiments of the striking mechanism according to the invention.
  • The figure 1 illustrates a first embodiment of the striking mechanism in the idle state.
  • The figure 2 illustrates the striking mechanism of the figure 1 when the buzzer sounds.
  • The figure 3 illustrates the striking mechanism of the figure 1 during the fall of the hammer.
  • The figure 4 illustrates the striking mechanism of the figure 1 when the winding device is triggered just before the impact of the hammer on the gong.
  • The figure 5 illustrates the striking mechanism of the figure 1 during the rebound of the hammer on the stamp.
  • The figure 6 illustrates the striking mechanism of the figure 1 during re-winding of the hammer and its drive spring.
  • The figure 7 illustrates a second embodiment of the striking mechanism in the idle state.
  • The figure 8 illustrates the striking mechanism of the figure 7 when the buzzer sounds.
  • The figure 9 illustrates the striking mechanism of the figure 7 during the fall of the hammer.
  • The figure 10 illustrates the striking mechanism of the figure 7 just before the impact of the hammer on the stamp.
  • The figure 11 illustrates the striking mechanism of the figure 7 at the moment of impact of the hammer on the stamp.
  • The figure 12 illustrates the striking mechanism of the figure 7 during re-winding of the hammer and its drive spring.

La première forme d'exécution illustrée schématiquement et à titre d'exemple non limitatif aux figures 1 à 6 du mécanisme de sonnerie d'un mouvement d'une pièce d'horlogerie, montre bracelet, montre pendentif ou de poche, pendulette, comporte :

  • Un timbre 1 fixé de manière traditionnelle sur une partie fixe de la pièce d'horlogerie, notamment la platine 2 du mouvement.
  • Un marteau 3 pivoté sur une partie fixe, notamment la platine 2 du mouvement autour d'un axe 4 perpendiculaire au plan de ladite platine 2. Ce marteau est disposé par rapport au timbre 1 de telle façon qu'il puisse se déplacer d'une position de sonnerie pour laquelle il est en contact avec ce timbre par son bec de frappe 5 jusque dans une position de repos pour laquelle ledit bec de frappe 5 est le plus éloigné possible dudit timbre 1.
  • Un ressort d'entraînement 6 du marteau 3 est fixé par une de ses extrémités sur une partie fixe, ici la platine 2, du mouvement. L'extrémité libre 6.1 de ce ressort d'entraînement 6 agit sur une dent 7 du marteau 3 pour faire pivoter ledit marteau 3 dans le sens de la flèche F de manière à faire frapper le bec de frappe 5 du marteau 3 contre le timbre 1.
The first embodiment illustrated schematically and by way of nonlimiting example to figures 1 to 6 the striking mechanism of a movement of a timepiece, wristwatch, pendant or pocket watch, clock, comprises:
  • A gong 1 fixed in the traditional way on a fixed part of the timepiece, in particular the plate 2 of the movement.
  • A hammer 3 pivoted on a fixed part, in particular the plate 2 of the movement around an axis 4 perpendicular to the plane of said plate 2. This hammer is positioned relative to the gong 1 so that it can move at a distance. striking position for which it is in contact with this gong by its striking beak 5 until it reaches a rest position for which said striking beak 5 is as far as possible from said gong 1.
  • A drive spring 6 of the hammer 3 is fixed by one of its ends to a fixed part, here the plate 2, of the movement. The free end 6.1 of this drive spring 6 acts on a tooth 7 of the hammer 3 to rotate said hammer 3 in the direction of arrow F so as to strike the striking nose 5 of the hammer 3 against the gong 1 .

Dans l'exemple illustré le ressort d'entraînement 6 est solidaire d'un talon 6.2 pivoté sur la platine 2 du mouvement autour d'un axe ou goupille 6.3. Un excentrique E pivoté dans la platine 2 sert de butée au talon 6.2 du ressort 6. La position angulaire de l'excentrique E permet d'ajuster la position angulaire du talon 6.3 et donc la force appliquée par le ressort 6 sur le marteau 3.In the example illustrated, the drive spring 6 is integral with a heel 6.2 pivoted on the plate 2 of the movement around an axis or pin 6.3. An eccentric E pivoted in the plate 2 serves as a stop for the heel 6.2 of the spring 6. The angular position of the eccentric E makes it possible to adjust the angular position of the heel 6.3 and therefore the force applied by the spring 6 on the hammer 3.

Dans une variante le talon 6.3 du ressort d'entraînement 6 pourrait être fixé sans possibilité de réglage sur la platine 2 ou fixé sur la platine de façon réglable par d'autres moyens.In a variant, the heel 6.3 of the drive spring 6 could be fixed without possibility of adjustment on the plate 2 or fixed on the plate in an adjustable manner by other means.

Ce mécanisme de sonnerie comporte encore un dispositif d'armage du ressort d'entraînement 6 du marteau 3 comportant un mobile d'armage constitué dans cette première forme d'exécution du mécanisme par une roue d'armage 8 comportant une denture formée de dents 8.1 à sa périphérie. Cette roue d'armage 8 est pivotée sur la platine 2 du mouvement et est solidaire d'un pignon 9 engrenant avec une roue dentée 10 solidaire de la cage d'un barillet comportant un ressort-moteur (non illustré).This striking mechanism also comprises a device for winding the driving spring 6 of the hammer 3 comprising a winding wheel consisting of in this first embodiment of the mechanism by a winding wheel 8 comprising a set of teeth formed by teeth 8.1 at its periphery. This winding wheel 8 is pivoted on the plate 2 of the movement and is integral with a pinion 9 meshing with a toothed wheel 10 integral with the cage of a barrel comprising a motor spring (not illustrated).

Ce barillet peut être le barillet moteur du mouvement d'horlogerie ou le barillet dédié au mécanisme de sonnerie et la liaison cinématique reliant ce barillet au mobile d'armage 8 peut être de toute nature autre que celle décrite et illustrée ici.This barrel can be the motor barrel of the clockwork movement or the barrel dedicated to the striking mechanism and the kinematic connection connecting this barrel to the winding mobile 8 can be of any nature other than that described and illustrated here.

Ce mécanisme de sonnerie comporte encore un dispositif de blocage du dispositif d'armage constitué dans cet exemple par une bascule 11 pivotée en 11.1 sur la platine et dont une première extrémité 11.2 coopère avec la denture 8.1 de la roue d'armage 8 tandis que la seconde extrémité 11.3 est placée dans une encoche 14 que comporte le moyeu du marteau 3. Cette encoche 14 est située à proximité immédiate de la dent 7 du marteau 3. Le flan de cette dent 7 opposé à celui entrant en contact avec le ressort d'entraînement 6 forme un des côtés de ladite encoche 14.This striking mechanism also comprises a device for locking the winding device constituted in this example by a lever 11 pivoted at 11.1 on the plate and a first end 11.2 of which cooperates with the teeth 8.1 of the winding wheel 8 while the second end 11.3 is placed in a notch 14 that comprises the hub of the hammer 3. This notch 14 is located in the immediate vicinity of the tooth 7 of the hammer 3. The blank of this tooth 7 opposite to that coming into contact with the spring of drive 6 forms one side of said notch 14.

En position de repos du mécanisme illustrée à la figure 1 la paroi de l'encoche 14 du moyeu du marteau 3 opposée à la dent 7 dudit marteau est en contact avec la seconde extrémité 11.3 de la bascule de blocage 11 tendent à déplacer cette bascule dans le sens horaire et à introduire la première extrémité 11.2 de cette bascule de blocage 11 dans la denture 8.1 de la roue d'armage 8 interdisant toute rotation de celle-ci dans le sens anti-horaire, soit dans le sens d'armage du ressort d'entraînement 6 du marteau comme on le verra plus loin. Ce dispositif de blocage du dispositif d'armage est donc commandé par le marteau.In the rest position of the mechanism shown on figure 1 the wall of the notch 14 of the hub of the hammer 3 opposite the tooth 7 of said hammer is in contact with the second end 11.3 of the locking lever 11 tend to move this lever in the clockwise direction and to introduce the first end 11.2 of this locking lever 11 in the teeth 8.1 of the winding wheel 8 preventing any rotation of the latter in the anti-clockwise direction, or in the winding direction of the driving spring 6 of the hammer as will be seen more far. This locking device for the winding device is therefore controlled by the hammer.

Le dispositif d'armage du ressort d'entraînement 6 du marteau 3 comporte encore un levier d'armage 12 pivoté sur le marteau en 12.1 de manière non coaxiale à l'axe de pivotement 4 du marteau 3. Ce levier d'armage 12 comporte deux goupilles 12.2, 12.3 servant de butées à un guide flexible 13 fixé par une de ses extrémités sur la platine 2. Ce guide flexible est positionné de manière à intersecter l'axe de pivotement 12,2 du levier d'armage 12 sur le marteau et à s'étendre entre les deux goupilles 12.2, 12.3 du levier 12. La direction du guide flexible est telle qu'elle passe par le sommet des dents 8.1 de la roue d'armage 8 et par l'axe de pivotement 12.1 du levier d'armage 12. Ainsi quelle que soit la position du marteau 3 l'extrémité libre du levier d'armage 12 est, sauf à déplacer le guide flexible 13, toujours appliquée contre la denture 8.1 de la roue d'armage 8 de manière à ce qu'une desdites dents 8.1 soit en contact avec un crochet 12.5 que comporte l'extrémité libre du levier d'armage 12.The winding device of the drive spring 6 of the hammer 3 further comprises a winding lever 12 pivoted on the hammer at 12.1 in a manner that is not coaxial with the pivot axis 4 of the hammer 3. This winding lever 12 comprises two pins 12.2, 12.3 serving as stops for a flexible guide 13 fixed by one of its ends on the plate 2. This flexible guide is positioned so as to intersect the pivot axis 12.2 of the winding lever 12 on the hammer and to extend between the two pins 12.2, 12.3 of the lever 12. The direction of the flexible guide is such that it passes through the top of the teeth 8.1 of the winding wheel 8 and through the pivot axis 12.1 of the winding lever 12. Thus, whatever the position of the hammer 3, the end free of the winding lever 12 is, except for moving the flexible guide 13, always applied against the teeth 8.1 of the winding wheel 8 so that one of said teeth 8.1 is in contact with a hook 12.5 that comprises the free end of the winding lever 12.

En effet le guide flexible 13 formé d'une lame flexible est positionné au repos parallèlement à la platine 2 et dans un plan perpendiculaire à la platine 2 passant par l'axe de pivotement 12.1 du levier d'armage 1 et l'extrémité d'une dent 8.1 de la roue d'armage 8.Indeed the flexible guide 13 formed of a flexible blade is positioned at rest parallel to the plate 2 and in a plane perpendicular to the plate 2 passing through the pivot axis 12.1 of the winding lever 1 and the end of a tooth 8.1 of the winding wheel 8.

En position de repos illustrée à la figure 1 le crochet 12.5 du levier d'armage 12 bute contre une dent 8.1 de la roue d'indexage 8 et le marteau 3 est ainsi retenu en position de repos éloignée du timbre 1 et son ressort d'entraînement 6 est armé. L'élasticité propre du guide flexible 13 tend à déplacer le crochet 12.5 en direction de la roue d'armage 8.In the rest position shown in figure 1 the hook 12.5 of the winding lever 12 abuts against a tooth 8.1 of the indexing wheel 8 and the hammer 3 is thus retained in the rest position remote from the gong 1 and its drive spring 6 is charged. The inherent elasticity of the flexible guide 13 tends to move the hook 12.5 in the direction of the winding wheel 8.

Ainsi dans ce mécanisme de sonnerie, contrairement à ce qui se fait habituellement la position de repos correspond à une position du marteau 3 pour laquelle son bec de frappe 5 est éloigné du timbre 1 et pour laquelle son ressort d'entraînement est armé. Il n'est donc plus besoin de prévoir un contre-ressort pour éviter que le marteau ne vienne par inadvertance en contact avec le timbre en position de repos du mécanisme de sonnerie, soit par exemple des rebondissements du marteau, soit des tintements sous l'effet de chocs.Thus in this striking mechanism, unlike what is usually done, the rest position corresponds to a position of the hammer 3 for which its striking nose 5 is remote from the gong 1 and for which its drive spring is loaded. There is therefore no longer any need to provide a counter-spring to prevent the hammer from inadvertently coming into contact with the gong in the rest position of the striking mechanism, either for example bouncing of the hammer or ringing under the shock effect.

Pour faire fonctionner le mécanisme de sonnerie décrit il faut disposer d'un mécanisme de déclenchement provoquant un déplacement ou plusieurs déplacements successifs de l'extrémité libre du guide flexible 13 dans le sens horaire. Un tel mécanisme ne sera pas décrit ici mais il est schématisé par un râteau 15 pouvant pivoter et provoquer des déplacements de l'extrémité libre du guide flexible 13.To operate the striking mechanism described it is necessary to have a trigger mechanism causing a movement or several successive movements of the free end of the flexible guide 13 in the clockwise direction. Such a mechanism will not be described here but it is shown schematically by a rake 15 capable of pivoting and causing movement of the free end of the flexible guide 13.

Le fonctionnement du mécanisme de sonnerie décrit en référence aux figures 1 à 6 est le suivant :

  • Le mécanisme étant en position de repos illustré à la figure 1 pour laquelle le marteau 3 est éloigné du timbre, le ressort d'entraînement 6 du marteau 3 est armé et la roue d'armage 8 bloquée, on déplace l'extrémité libre du guide flexible 13 à l'aide d'un élément de dégagement, dans l'exemple le râteau 15, pour l'éloigner de la roue d'armage 8 jusque dans la position illustrée par la figure 2. Ce faisant le crochet 12.5 du levier d'armage 12 échappe à la denture 8.1 de la roue d'armage. Le marteau 3 est ainsi libéré et commence sa chute dans le sens de la flèche F vers le timbre 1 sous l'action de son ressort d'entraînement 6. Pendant sa chute, figure 3, la dent 7 du moyeu du marteau 3 déplace la bascule de blocage 11 dans le sens anti-horaire provoquant la libération de la roue d'armage 8, une dent 8.1 échappant à l'extrémité 11.2 de la bascule de blocage 11 (figure 4) juste avant l'impact du marteau 3 sur le timbre. Le marteau 3 possède en ce point-là déjà sa vitesse maximale. L'inertie du rouage agit comme temporisateur garantissant que le marteau 3 puisse continuer librement son chemin jusqu'à l'impact avec le timbre sans être retenu par la roue d'armage 8 qui a été libérée précédemment.
  • Le marteau 3 termine sa chute et vient heurter le timbre 1 avec son bec de frappe 5 (figure 5). Pendant ce temps la roue d'armage s'est mise en rotation entraînée par le barillet, la roue dentée 10 et le pignon 9. Toujours pendant ce temps le guide flexible 13 ayant été libéré du râteau 15 le crochet 12.5 du levier d'armage 12 coopère à nouveau avec la denture 8.1 et est tiré par la roue d'armage 8 en direction de l'extrémité libre du guide flexible 13 provoquant le retour du marteau 3 en arrière et l'armage de son ressort d'entraînement 6 (figure 6) jusqu'au moment où la bascule de blocage 11 est déplacée dans le sens horaire par le flan de l'encoche 14 opposé à la dent 7 de sorte que la première extrémité 11.2 de cette bascule se place sur la trajectoire d'une dent 8.1 de la roue d'armage 8 et bloque celle-ci.
The operation of the striking mechanism described with reference to figures 1 to 6 is the next :
  • The mechanism being in the rest position illustrated on figure 1 for which the hammer 3 is moved away from the gong, the driving spring 6 of the hammer 3 is loaded and the winding wheel 8 blocked, the free end of the flexible guide 13 is moved using a release element , in the example the rake 15, to move it away from the winding wheel 8 to the position illustrated by the figure 2 . In doing so, the hook 12.5 of the winding lever 12 escapes the teeth 8.1 of the winding wheel. Hammer 3 is thus released and begins to fall in the direction of arrow F towards gong 1 under the action of its drive spring 6. During its fall, figure 3 , the tooth 7 of the hub of the hammer 3 moves the locking lever 11 in the anti-clockwise direction causing the release of the winding wheel 8, a tooth 8.1 escaping at the end 11.2 of the locking lever 11 ( figure 4 ) just before the impact of hammer 3 on the gong. The hammer 3 already has its maximum speed at this point. The inertia of the cog acts as a timer ensuring that the hammer 3 can freely continue its path until impact with the gong without being retained by the winding wheel 8 which was released previously.
  • Hammer 3 finishes its fall and strikes stamp 1 with its striking beak 5 ( figure 5 ). During this time the winding wheel has started to rotate driven by the barrel, the toothed wheel 10 and the pinion 9. Still during this time the flexible guide 13 having been released from the rake 15 the hook 12.5 of the winding lever 12 again cooperates with the teeth 8.1 and is pulled by the winding wheel 8 in the direction of the free end of the flexible guide 13 causing the hammer 3 to return back and the winding of its drive spring 6 ( figure 6 ) until the moment when the Locking lever 11 is moved clockwise by the blank of notch 14 opposite to tooth 7 so that the first end 11.2 of this lever is placed on the path of a tooth 8.1 of winding wheel 8 and blocks it.

Le mécanisme est ainsi à nouveau en position de repos (figure 1) pour laquelle le marteau 3 est éloigné du timbre et le ressort d'entraînement 6 de marteau 3 est armé. Le râteau 15 peut, soit être actionné à nouveau d'un pas par le dispositif de déclenchement du mécanisme de sonnerie pour sonner un coup supplémentaire, soit être rétrogradé en position de repos.The mechanism is thus again in the rest position ( figure 1 ) for which the hammer 3 is moved away from the gong and the hammer drive spring 6 3 is charged. The rake 15 can either be actuated again by one step by the triggering device of the striking mechanism to sound an additional blow, or be demoted to the rest position.

Ce mécanisme est simple, il nécessite peu de pièce, le rouage de sonnerie est réduit et ne comporte pas de régulateur de vitesse. Ce mécanisme ne comporte pas non plus de contre-ressort ou d'amortisseur pour le marteau 3.This mechanism is simple, it requires few parts, the striking gear is small and does not include a speed regulator. This mechanism also does not include a counter spring or damper for the hammer 3.

Lors du déclenchement du mécanisme de sonnerie, la sonnerie est immédiate la chute du marteau 3 étant pratiquement instantanée depuis sa position préarmée. Ainsi la précision du moment auquel la sonnerie doit retentir est grandement améliorée. La puissance de la sonnerie est également améliorée du fait qu'il n'y a plus de perte d'énergie due au contre-ressort de marteau.When the striking mechanism is triggered, the striking is immediate, the fall of the hammer 3 being practically instantaneous from its pre-armed position. Thus, the accuracy of when the bell should sound is greatly improved. The power of the bell is also improved because there is no more energy loss due to the hammer counter spring.

Comme on le voit de la description ci-dessus et des figures 1 à 6 du dessin, le dispositif de blocage formé par la bascule de blocage 11 permet, lorsque le mécanisme de sonnerie est à l'état de repos, de maintenir le ressort d'entraînement 6 en position armée et de maintenir le marteau 3 dans une position pour laquelle sa partie 5 destinée à frapper le timbre 1 est éloignée de ce dernier.As can be seen from the above description and figures 1 to 6 of the drawing, the locking device formed by the locking lever 11 makes it possible, when the striking mechanism is in the rest state, to maintain the drive spring 6 in the armed position and to maintain the hammer 3 in a position for which its part 5 intended to strike the stamp 1 is remote from the latter.

De nombreuses variantes de cette première forme d'exécution du mécanisme de sonnerie peuvent être envisagées car la roue d'armage 8 peut être réalisée sous une autre forme, par exemple un mobile d'armage présentant la forme d'un secteur denté relié à la cage du barillet par un embrayage unidirectionnel. Sa liaison au barillet peut également être réalisée différemment. Le dispositif de blocage du dispositif d'armage peut également être réalisé autrement qu'avec une bascule de blocage.Many variants of this first embodiment of the striking mechanism can be envisaged because the winding wheel 8 can be produced in another form, for example a winding mobile having the shape of a toothed sector connected to the barrel cage by a one-way clutch. Its connection to the barrel can also be made differently. The device blocking of the winding device can also be achieved other than with a locking lever.

L'élément de dégagement formé par le râteau 15 dans cette forme d'exécution peut également être réalisé différemment, il est toujours par contre commandé par le mouvement d'horlogerie ou par un organe de déclenchement manuel tel qu'un poussoir.The release element formed by the rake 15 in this embodiment can also be made differently; it is, on the other hand, always controlled by the clockwork movement or by a manual triggering member such as a pusher.

Les caractéristiques principales et essentielles du mécanisme de sonnerie selon l'invention sont qu'en position ou mode de repos du mécanisme de sonnerie :

  • la partie du marteau destinée à frapper le timbre est maintenue dans une position éloignée du timbre,
  • le ressort d'entraînement du marteau est maintenu en position armée.
The main and essential characteristics of the striking mechanism according to the invention are that in position or rest mode of the striking mechanism:
  • the part of the hammer intended to strike the gong is kept in a position remote from the gong,
  • the hammer drive spring is held in the cocked position.

Grâce à ces caractéristiques le mécanisme de sonnerie n'a pas besoin de comporter de contre-ressort ou d'amortisseur pour éviter qu'au repos le marteau ne vienne buter contre le timbre sous l'action de chocs que peut subir la pièce d'horlogerie. Il ne comporte pas non plus de régulateur de vitesse.Thanks to these characteristics, the striking mechanism does not need to include a counter-spring or damper to prevent the hammer at rest from coming into abutment against the gong under the action of shocks that the part may undergo. watchmaking. It also does not have a cruise control.

De ce fait le mécanisme de sonnerie est plus simple et surtout permet de transmettre un maximum d'énergie au timbre lors de la frappe du marteau sur ce timbre, la perte d'énergie due au contre-ressort ou amortisseur étant supprimée.As a result, the striking mechanism is simpler and above all makes it possible to transmit a maximum of energy to the gong when the hammer is struck on this gong, the loss of energy due to the counter-spring or damper being eliminated.

De plus, la sonnerie se fait immédiatement après son déclenchement, le temps nécessaires à l'armage du ressort d'entraînement du marteau étant supprimé.In addition, the ringing is done immediately after its triggering, the time required for winding the hammer drive spring being eliminated.

On retrouve d'ailleurs ces caractéristiques principales de l'invention et les avantages qui en découlent dans la seconde forme d'exécution du mécanisme de sonnerie illustrée aux figures 7 à 12 et décrite dans ce qui suit.These main characteristics of the invention and the advantages which result therefrom are also found in the second embodiment of the striking mechanism illustrated in figures 7 to 12 and described in the following.

Cette seconde forme d'exécution du mécanisme de sonnerie comporte comme la première forme d'exécution de ce mécanisme décrite en relation avec les figures 1 à 6:

  • Un timbre 1 fixé de manière traditionnelle sur une partie fixe de la pièce d'horlogerie, notamment la platine 2 du mouvement.
  • Un marteau 3 pivoté sur une partie fixe, notamment la platine 2 du mouvement autour d'un axe 4 perpendiculaire au plan de ladite platine 2. Ce marteau est disposé par rapport au timbre 1 de telle façon qu'il puisse se déplacer d'une position de sonnerie pour laquelle il est en contact avec ce timbre par son bec de frappe 5 jusque dans une position de repos pour laquelle ledit bec de frappe 5 est le plus éloigné possible dudit timbre 1.
  • Un ressort d'entraînement 6 du marteau 3 est fixé par une de ses extrémités sur une partie fixe, ici la platine 2, du mouvement. L'extrémité libre 6.1 de ce ressort d'entraînement 6 agit sur une dent 7 du marteau 3 pour faire pivoter ledit marteau 3 dans le sens de la flèche F de manière à faire frapper le bec de frappe 5 du marteau 3 contre le timbre 1.
This second embodiment of the striking mechanism comprises like the first embodiment of this mechanism described in relation to the figures 1 to 6 :
  • A gong 1 fixed in the traditional way on a fixed part of the timepiece, in particular the plate 2 of the movement.
  • A hammer 3 pivoted on a fixed part, in particular the plate 2 of the movement around an axis 4 perpendicular to the plane of said plate 2. This hammer is positioned relative to the gong 1 so that it can move at a distance. striking position for which it is in contact with this gong by its striking beak 5 until it reaches a rest position for which said striking beak 5 is as far as possible from said gong 1.
  • A drive spring 6 of the hammer 3 is fixed by one of its ends to a fixed part, here the plate 2, of the movement. The free end 6.1 of this drive spring 6 acts on a tooth 7 of the hammer 3 to rotate said hammer 3 in the direction of arrow F so as to strike the striking nose 5 of the hammer 3 against the gong 1 .

Cette seconde forme d'exécution du mécanisme de sonnerie comporte encore un dispositif d'armage du ressort d'entraînement 6 du marteau 3 comportant un mobile d'armage constitué par une roue d'armage 8 pivotée sur la platine 2 et comportant une denture formée de dents 8.1. Cette roue d'armage 8 est solidaire d'un pignon 9 engrenant avec une roue dentée 10 solidaire ou reliée cinématiquement à la cage d'un barillet et donc au ressort-moteur du mouvement (non illustré).This second embodiment of the striking mechanism also comprises a device for winding the driving spring 6 of the hammer 3 comprising a winding mobile constituted by a winding wheel 8 pivoted on the plate 2 and comprising a toothing formed of teeth 8.1. This winding wheel 8 is integral with a pinion 9 meshing with a toothed wheel 10 integral with or kinematically connected to the cage of a barrel and therefore to the motor spring of the movement (not shown).

Ce barillet peut être le barillet moteur du mouvement d'horlogerie ou un barillet dédié au mécanisme de sonnerie et la liaison cinématique reliant ce barillet au mobile d'armage 8 peut être de toute nature autre que celle décrite ici.This barrel can be the motor barrel of the clockwork movement or a barrel dedicated to the striking mechanism and the kinematic link connecting this barrel to the winding mobile 8 can be of any nature other than that described here.

Ce dispositif d'armage comporte encore un organe d'armage 20 comportant un talon 20.1 fixé par une vis 20.2 et une goupille 20.3 sur le marteau 3. Cet organe d'armage 20 comporte encore une lame ressort 20.4 dont l'extrémité présente la forme d'un crochet 20.5. L'élasticité propre de cette lame ressort tend à appliquer le crochet 20.5 contre une dent 8.1 de la roue d'armage 8.This winding device also comprises a winding member 20 comprising a heel 20.1 fixed by a screw 20.2 and a pin 20.3 on the hammer 3. This winding member 20 also comprises a leaf spring 20.4 whose end has the shape a hook 20.5. The inherent elasticity of this leaf spring tends to apply the hook 20.5 against a tooth 8.1 of the winding wheel 8.

Ce mécanisme de sonnerie comporte encore un dispositif de blocage du dispositif d'armage comportant une détente 21 pivotée en 21.1 sur la platine 2 et dont l'extrémité 21.2 est engagée dans une entaille 22 que comporte le moyeu du marteau 3. Cette détente comporte une palette 21.4 destinée à coopérer avec les dents 8.1 de la roue d'armage 8. Cette palette 21.4 s'étend perpendiculairement hors du plan de la détente 21.This striking mechanism also comprises a device for locking the winding device comprising a trigger 21 pivoted at 21.1 on the plate 2 and the end of which 21.2 is engaged in a notch 22 which the hub of the hammer 3. This trigger comprises a vane 21.4 intended to cooperate with the teeth 8.1 of the winding wheel 8. This vane 21.4 extends perpendicularly out of the plane of the trigger 21.

Dans cette seconde forme d'exécution le mécanisme de déclenchement du mécanisme de sonnerie comporte une roue de déclenchement 23 présentant une denture en dent de scie. Cette roue de déclenchement est entraînée par le mouvement d'horlogerie ou par un mécanisme de sonnerie habituel d'un nombre de pas déterminés lorsque la sonnerie doit être activée.In this second embodiment, the triggering mechanism of the striking mechanism comprises a triggering wheel 23 having sawtooth toothing. This trigger wheel is driven by the clockwork movement or by a usual striking mechanism by a determined number of steps when the striking must be activated.

Ce mécanisme de déclenchement comporte encore une bascule de déclenchement 24, pivotée en 24.1 sur la platine 2, qui comporte un premier bras 24.2 dont l'extrémité 24.3 coopère avec la denture en dent de loup de la roue de déclenchement 23 et un second bras 24.4 dont l'extrémité coopère avec une extension du crochet 20.5 s'étendant en dessous de la roue d'armage 8. Enfin cette bascule 24 est soumise à l'action d'un ressort de rappel 25 tendant à maintenir le premier bras 24.2 de cette bascule 24 contre une butée 26, en position de repos pour laquelle l'extrémité 24.3 du premier bras 24.2 de la bascule 24 est situé sur le chemin des dents de la roue de déclenchement 23 et pour laquelle l'extrémité du second bras 24.4 de la bascule 24 n'est pas en contact avec l'extension du crochet 20.5.This trigger mechanism also comprises a trigger lever 24, pivoted at 24.1 on the plate 2, which comprises a first arm 24.2 whose end 24.3 cooperates with the wolf tooth teeth of the trigger wheel 23 and a second arm 24.4 the end of which cooperates with an extension of the hook 20.5 extending below the winding wheel 8. Finally, this lever 24 is subjected to the action of a return spring 25 tending to hold the first arm 24.2 of this rocker 24 against a stop 26, in the rest position for which the end 24.3 of the first arm 24.2 of the rocker 24 is located in the path of the teeth of the trigger wheel 23 and for which the end of the second arm 24.4 of the rocker 24 is not in contact with the extension of the hook 20.5.

Dans la position ou état de repos du mécanisme de sonnerie illustré à la figure 7 le marteau 3 est en position reculée, éloignée du timbre, son ressort d'entraînement 6 est armé, la roue d'armage 8 est bloquée par la détente 21 appliquée contre la denture 8.1 de la roue d'armage 8 par le marteau 3 qui lui-même est maintenu dans cette position par le crochet 20.5 de l'organe d'armage 20.In the resting position or state of the striking mechanism shown in figure 7 the hammer 3 is in a retracted position, away from the gong, its drive spring 6 is loaded, the winding wheel 8 is blocked by the trigger 21 applied against the teeth 8.1 of the winding wheel 8 by the hammer 3 which itself is held in this position by the hook 20.5 of the winding member 20.

A partir de cette position de repos de cette seconde forme d'exécution du mécanisme de sonnerie le fonctionnement de celui-ci est le suivant:
La roue de déclenchement 23 est entraînée par une prise de force du mouvement d'horlogerie ou par un mécanisme de déclenchement piloté par le mouvement d'horlogerie d'un ou plusieurs pas. A chaque pas de la roue de déclenchement 23 une dent déplace le premier bras 24.3 de la bascule de déclenchement 24 dans le sens horaire contre l'action de son ressort de rappel 25. Ce faisant, l'extrémité du second bras 24.4 de la bascule de déclenchement 24 pousse l'extension du crochet 20.5 de l'organe d'armage 20 (figure 8) de manière à ce que ce crochet 20.5 échappe à la dent 8.1 de la roue d'armage 8. Le marteau 3 commence sa chute en direction du timbre 1 (figure 9). L'extrémité 21.2 de la détente 21 est déplacée dans le sens anti-horaire par le moyeu du marteau 3 ce qui libère la roue d'armage, la palette 21.4 échappant à la dent 8.1, pendant que le marteau 3 est entraîné par son ressort d'entraînement 6 en direction du timbre (figure 10). Le marteau 3 frappe le timbre et la bascule de déclenchement échappe à la denture de la roue de déclenchement 23 et revient en appui contre sa butée 26 sous l'action de son ressort de rappel 25 (figure 11). Le marteau 3 rebondit dans le sens anti-horaire, ce mouvement s'éloignant du timbre est soutenu par l'action de la roue d'armage 8 coopérant avec l'organe d'armage 20 du marteau 3 : la roue d'armage 8 tourne en sens horaire et une de ses dents 8.1 rattrape le crochet 20.5 de l'organe d'armage 20 et tire le marteau dans le sens anti-horaire tout en armant son ressort d'entraînement 6 (figure 12). Un nouveau contact du bec de frappe 5 du marteau 3 avec le timbre 1 comme ceci risque de se produire dans les systèmes de sonnerie courants avec contre-ressort, est ainsi exclu jusqu'au prochain dégagement du système. La palette 21.4 de la détente 20 est repositionnée par l'entaille 22 du moyeu du marteau 3 sur la trajectoire des dents 8.1 de la roue d'armage. Une fois qu'une dent 8.1 de la roue d'armage 8 vient se poser sur la palette 21.4 de la détente 21, le mécanisme de sonnerie est à nouveau en position de repos, le marteau 3 étant éloigné du timbre et son ressort d'entraînement étant à nouveau armé (figure 7).From this rest position of this second embodiment of the striking mechanism, the operation thereof is as follows:
The trigger wheel 23 is driven by a power take-off of the clockwork movement or by a trigger mechanism controlled by the clockwork movement of one or more steps. At each step of the trigger wheel 23 a tooth moves the first arm 24.3 of the trigger lever 24 clockwise against the action of its return spring 25. In doing so, the end of the second arm 24.4 of the lever trigger 24 pushes the extension of hook 20.5 of the winding member 20 ( figure 8 ) so that this hook 20.5 escapes tooth 8.1 of winding wheel 8. Hammer 3 begins to fall in the direction of gong 1 ( figure 9 ). The end 21.2 of the trigger 21 is moved counterclockwise by the hub of the hammer 3 which releases the winding wheel, the vane 21.4 escaping from the tooth 8.1, while the hammer 3 is driven by its spring drive 6 towards the timbre ( figure 10 ). The hammer 3 strikes the gong and the trigger lever escapes the teeth of the trigger wheel 23 and comes back to bear against its stop 26 under the action of its return spring 25 ( figure 11 ). The hammer 3 bounces counterclockwise, this movement away from the gong is supported by the action of the winding wheel 8 cooperating with the winding member 20 of the hammer 3: the winding wheel 8 turns clockwise and one of its teeth 8.1 catches the hook 20.5 of the winding member 20 and pulls the hammer counterclockwise while charging its drive spring 6 ( figure 12 ). A new contact of the striking nose 5 of the hammer 3 with the gong 1 like this risks occurring in the current bell systems with counter-spring, is thus excluded until the next release of the system. The paddle 21.4 of the trigger 20 is repositioned by the notch 22 of the hub of the hammer 3 on the path of the teeth 8.1 of the winding wheel. Once a tooth 8.1 of the winding wheel 8 comes to rest on the pallet 21.4 of the trigger 21, the striking mechanism is again in the rest position, the hammer 3 being away from the gong and its spring. training being armed again ( figure 7 ).

Ce fonctionnement se répète pour chaque déclenchement de la bascule 24 dans le sens horaire.This operation is repeated for each triggering of the flip-flop 24 in the clockwise direction.

Deux formes d'exécution du mécanisme de sonnerie ont été décrits à titre d'exemple non limitatifs, on peut concevoir d'autres variantes dans lesquelles les dispositifs d'armage, de blocage et de déclenchement seraient réalisés différemment pour autant qu'en position de repos du mécanisme de sonnerie le bec de frappe 5 du marteau 3 soit maintenu éloigné du timbre et que son ressort d'entraînement 6 soit armé.Two embodiments of the striking mechanism have been described by way of nonlimiting example, it is possible to conceive of other variants in which the winding, locking and triggering devices would be made differently as long as in the position of. rest of the striking mechanism the striking nose 5 of the hammer 3 is kept away from the gong and that its drive spring 6 is loaded.

Claims (13)

  1. Striking mechanism for the movement of a timepiece such as a wrist watch, pocket watch, pendant watch, alarm timepiece or a small desk clock, comprising:
    - a gong (1),
    - a hammer (3) which moves between a recoiled position, remote from the gong (1), and a striking position where a part (5) of the hammer (3) is in contact with the gong (1), the hammer (3) being arranged such that said part (5) thereof strikes the gong (1) when the striking mechanism is in the striking mode,
    - a drive spring (6) of the hammer (3) acting directly or indirectly on the hammer (3) and able to be cocked and then released, this drive spring (6), upon release, propelling the hammer (3) against the gong (1) from the recoiled position of the hammer (3) when the striking mechanism is in the striking mode in order to produce a sound;
    the striking mechanism being characterised in that it is arranged such that, when the striking mechanism is in the inoperative mode, the hammer (3) is in its recoiled position and the drive spring (6) of the hammer is held in the cocked position.
  2. Mechanism as claimed in claim 1, characterised in that it comprises a device for cocking the drive spring (6) of the hammer (3) and a device for blocking this cocking device controlled by the hammer (3).
  3. Mechanism as claimed in claim 2, characterised in that the device for cocking the drive spring (6) of the hammer (3) comprises a cocking mobile (8) comprising a peripheral tooth arrangement (8.1) kinematically connected to a mainspring.
  4. Mechanism as claimed in claim 3, characterised in that the cocking device comprises a cocking lever (12) pivoted on the hammer (3) cooperating with the tooth arrangement (8.1) of the cocking mobile (8).
  5. Mechanism as claimed in claim 3 or claim 4, characterised in that the cocking mobile (8) is connected to the mainspring of a barrel by a pinion (9) and a toothed wheel (10).
  6. Mechanism as claimed in claim 4 and claim 5, characterised in that the cocking lever (12) is pivoted on the hammer (3) in a manner not concentric to the pivot axis of said hammer (3) and that this cocking lever (12) comprises a hook (12.5) intended to cooperate with the tooth arrangement (8.1) of the cocking mobile (8).
  7. Mechanism as claimed in claim 6, characterised in that it comprises a flexible guide (13) fixed by one end to the plate (2) of the movement of the timepiece extending between two pins (12.2; 12.3) of the cocking lever (12) tending to keep its hook (12.5) in abutment against the tooth arrangement (8.1) of the cocking mobile (8).
  8. Mechanism as claimed in claim 3, characterised in that the blocking device comprises a blocking lever (11) pivoted on the plate (2) of the movement, of which a first end cooperates with the tooth arrangement (8.1) of the cocking mobile (8), whereas its second end is located in a notch (14) produced in the periphery of the hub of the hammer (3).
  9. Mechanism as claimed in one of the preceding claims, characterised in that the free end of the drive spring (6) of the hammer (3) bears against a tooth (7) on the hub of this hammer (3).
  10. Mechanism as claimed in claim 3 or claim 5 when this depends on claim 3, characterised in that the cocking device comprises a cocking member (20) comprising a heel (20.1) fixed on the hammer (3), and a spring blade (20.4) comprising a hook (20.5) cooperating on the one hand with the teeth (8.1) of the cocking mobile (8) and on the other hand with the end of a second arm (24.4) of a triggering lever (24) pivoted on the plate (2).
  11. Mechanism as claimed in claim 10, characterised in that the triggering lever (24) comprises a first arm (24.2), the end of which cooperates with the tooth arrangement of a triggering mobile (23) pivoted on the plate (2).
  12. Mechanism as claimed in claim 10 or claim 11, characterised in that the blocking device comprises a detent (21), the end of which is engaged in a jag (22) in the hub of the hammer (3), this detent having a pallet (21.4) cooperating with the teeth (8.1) of the cocking mobile (8).
  13. Timepiece comprising a movement fitted with a striking mechanism as claimed in any of claims 1 to 12.
EP13002121.5A 2012-05-02 2013-04-23 Striking mechanism Active EP2660662B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH00607/12A CH706468B1 (en) 2012-05-02 2012-05-02 Bell mechanism and timepiece whose movement includes such a mechanism.

Publications (3)

Publication Number Publication Date
EP2660662A2 EP2660662A2 (en) 2013-11-06
EP2660662A3 EP2660662A3 (en) 2018-01-17
EP2660662B1 true EP2660662B1 (en) 2020-08-05

Family

ID=48430400

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13002121.5A Active EP2660662B1 (en) 2012-05-02 2013-04-23 Striking mechanism

Country Status (2)

Country Link
EP (1) EP2660662B1 (en)
CH (1) CH706468B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3495895B1 (en) * 2017-12-11 2022-02-23 Omega SA Mechanism for sound display of a timepiece, in particular chronograph repetition
EP3543801A1 (en) * 2018-03-21 2019-09-25 Montres Breguet S.A. Timepiece chiming mechanism
EP3663869B1 (en) 2018-12-06 2021-06-16 Montres Breguet S.A. Timepiece chiming mechanism with suspended hammer

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US587574A (en) 1897-08-03 Repeating watch
EP2048548B8 (en) * 2007-10-10 2022-02-16 Richemont International S.A. Striking mechanism
CH702201A2 (en) * 2009-11-06 2011-05-13 Montres Breguet Sa Ringing Mechanism for use in watch, has insulating part configured to be moved by drive unit such that part of insulating part is near to sounding spring holder in rest mode or distant from sounding spring holder in ringing mode
CH702424A1 (en) * 2009-12-24 2011-06-30 Montres Breguet Sa striking mechanism of a watch.
CH702721A2 (en) * 2010-02-26 2011-08-31 Montres Breguet Sa Ringing mechanism for watch, has stop activating counter-spring in striking mode with certain delay following to striking of hammer against gong, so that counter-spring pushes hammer to rest position after striking of hammer against gong
EP2362278B1 (en) 2010-02-26 2016-10-12 Montres Breguet SA Hammer for a stricking mechanism of a watch
CH704392A1 (en) * 2011-01-28 2012-07-31 Montres Breguet Sa striking mechanism of a hammer lock watch.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CH706468B1 (en) 2016-08-15
CH706468A2 (en) 2013-11-15
EP2660662A3 (en) 2018-01-17
EP2660662A2 (en) 2013-11-06

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