EP2068211B1 - Chronograph control device - Google Patents

Chronograph control device Download PDF

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Publication number
EP2068211B1
EP2068211B1 EP07122635A EP07122635A EP2068211B1 EP 2068211 B1 EP2068211 B1 EP 2068211B1 EP 07122635 A EP07122635 A EP 07122635A EP 07122635 A EP07122635 A EP 07122635A EP 2068211 B1 EP2068211 B1 EP 2068211B1
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EP
European Patent Office
Prior art keywords
lever
spring
arm
control device
push
Prior art date
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EP07122635A
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German (de)
French (fr)
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EP2068211A1 (en
Inventor
Baptist Wyssbrod
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.)
Omega SA
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Omega SA
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Publication date
Application filed by Omega SA filed Critical Omega SA
Priority to EP07122635A priority Critical patent/EP2068211B1/en
Priority to KR1020080121130A priority patent/KR20090060156A/en
Priority to SG200808977-3A priority patent/SG153034A1/en
Priority to US12/330,067 priority patent/US8235584B2/en
Priority to CN2008101846106A priority patent/CN101452256B/en
Priority to JP2008312082A priority patent/JP5411487B2/en
Publication of EP2068211A1 publication Critical patent/EP2068211A1/en
Priority to HK09110826.0A priority patent/HK1133095A1/en
Application granted granted Critical
Publication of EP2068211B1 publication Critical patent/EP2068211B1/en
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0842—Watches or clocks with stop devices, e.g. chronograph with start-stop control mechanisms
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0804—Watches or clocks with stop devices, e.g. chronograph with reset mechanisms

Definitions

  • the present invention relates to a chronograph control device. More particularly, it relates to such a device for a chronograph equipped with at least two pushers.
  • chronographs that have two pushers, in this case a first pusher that controls the start and stop of a chronograph mechanism and a second pushbutton that controls the reset to zero. a counter and a display member such as a needle.
  • the manufacturers wish to be able to make sure that the sensation of resistance obtained during the actuation of a first pusher remains constant with respect to the resistance felt during the actuation of a second pusher and in an identical preferential mode while retaining the independence of the functions of the two pushers. This is not always the case for known chronographs, especially when one of the pushers is operated more often than the other. For many applications, it is also desired that an equal resistance for the two pushers is obtained, that is to say, it is desired that the user feels the same resistance as well when it actuates the pusher stop / start only when it activates the reset pushbutton. On the other hand, it is desired that the functions of the two pushers are completely independent of one another.
  • a chronograph control device is in particular known from the document GB 698 763 .
  • This document describes a chronograph mechanism comprising two pushers, each cooperating with a pivotally mounted lever.
  • the first lever cooperates with the second so as to rotate the second lever when the first lever is rotated.
  • a spring bears on a pin fixed to the second lever, so as to position it in abutment against the second pusher.
  • the second lever is pivoted under the action of the pusher, it is subjected to the return force of the spring, while the first lever is subjected to this restoring force indirectly via the second lever.
  • a disadvantage of this mechanism is the dependence of the functions of the two pushers relative to each other.
  • the invention therefore aims to overcome this disadvantage and to provide users with a chronograph control device corresponding to the needs explained above.
  • the subject of the invention is a chronograph control device according to claim 1.
  • This device comprises a first pivotally mounted lever, actuated by a first pusher, and limited in its movement towards the first pusher by a first stop , and a second pivotally mounted lever actuated by a second pusher, and limited in its movement towards the second pusher by a second stop.
  • a spring is fixedly mounted on the second lever.
  • the first lever is associated with an arm cooperating with the spring so that when one or the other of the two levers is actuated by one of the pushers, the arm and the spring move the relative to each other so that the arm is always subjected to the restoring force of the spring.
  • the resistance that the user feels when operating one of the pushers is therefore determined by the return force of said spring and the geometry of the mechanism, namely the length of the lever arms involved. If the return force of the spring decreases with time, the resistance felt during the actuation of one of the two pushers will decrease so that the ratio of these two resistances to one another remains constant.
  • the force felt during the actuation of the pusher depends of course also on the friction between the elements. As the friction is small compared to the restoring force of the spring, it will be neglected thereafter.
  • the arm can be provided with a spout and cooperate with the spring via this spout. It is also possible to provide the arm with a pin or ankle, the arm cooperating with the spring via this pin or this pin. This variant allows to cooperate an arm and a spring that are not in the same plane, which is particularly advantageous when the two levers are not in the same plane.
  • the arm is secured to the first lever, and said first lever pivots in a direction of rotation opposite to that of the second lever.
  • This embodiment has the particular advantage of being simple which facilitates the mounting of the device and therefore the mounting of the chronograph.
  • the arm and the spring can in principle cooperate via any type of intermediate part.
  • the spring can of course have the shape of any type of elastic element. It may be a jumper, but it is also possible to use a resilient element integral with the second lever, including an extension linked to the lever by an elastic section.
  • the geometry of the device so that the distance between a pivot axis of the first lever and a direction of the force exerted on the first pusher when actuated is equal to the distance between a pivot axis of the second lever and a direction of the force exerted on the second pusher during its actuation.
  • the resistance felt during the actuation of the first pusher is equal to the resistance felt during the actuation of the second pusher. This resistance depends only on the restoring force of the spring and the aforementioned distances as well as the friction that will be neglected as indicated above.
  • the ratio the resistances felt depend only on the ratio of the lever arms involved, and therefore on the ratio between, on the one hand, the distance between a pivot axis of the first lever and a direction of the force exerted on the first pusher, and secondly the distance between a pivot axis of the second lever and a direction of the force exerted on the second pusher.
  • the arm is pivotally mounted and articulated at the end of the first lever, said first lever pivoting in the same direction of rotation as the second lever, and the arm pivoting in a direction of rotation contrary to that of the two levers.
  • the arm is articulated to the second lever pivoting about the same axis as said second lever.
  • the geometry of the mechanism can be dimensioned appropriately. For example, it is possible to modify the ratio of the moments necessary for the actuation of a pusher and therefore the ratio of the resistances felt by varying the length of the lever arms involved.
  • the first and / or second stop is formed by the corresponding pusher.
  • the chronograph control device comprises a first lever 20 pivotally mounted on a first pivot 25, actuated by a first pusher 10, and a second lever 22 pivotally mounted on the same pivot 25 and actuated by a second Pusher 12.
  • the two levers 20, 22 are each limited in their movement towards their pusher 10, 12 respectively by a stop not shown in FIG. figure 1 .
  • the two levers 20, 22 are fixed to each other via a pin 28 which can move in a longitudinal hole.
  • the first lever 20 is in the form of a reset latch and can control the movement of, for example, a conventional hammer bolt rod to release a spring-loaded hammer.
  • the second lever 22 controls the stop and start of a chronograph counter. Since the invention relates solely to the control device, the chronograph mechanism as such will not be described in detail. However, according to the invention, the device can in principle be used with any type of watch mechanism, in particular a chronograph mechanism comprising column-type or cam-type systems.
  • a jumper spring 30 is mounted on the second lever 22 with two pins.
  • Said spring 30 has a generally V-shaped shape with a stationary arm relative to to the second lever 22 and a second arm located on the side of the first lever 20.
  • said spring 30 comprises in the end portion of the arm located on the side of the first lever a notch 32 or a notch which cooperates with a spout 24 secured to the first lever 20. This spout 24 is held in said notch 32 by the return force of the spring 30.
  • the spout 24 secured to the first lever 20 must overcome the notch force which holds it in the notch 32 of the spring 30. Once this force is overcome, the user will feel the resistance decrease and he will know that the desired reset has been carried out . If the user continues to actuate the pusher 10, the spout 24 is no longer in said notch 32, but slides along an inclined plane 34 with which the spring 30 terminates, the first lever 20 still opposing the restoring force of the spring 30. This inclined plane 34 ensures in particular the return of the lever 20, 22 when the user releases the pusher 10, 12.
  • the resistance that will be felt by a user who presses on the first pusher 10 in order to reset the counter mechanism of the chronograph is therefore proportional to the notch force that must be overcome to remove the spout 24 from the notch 32 of said spring 30 .
  • the resistance that will be felt during the actuation of the first pusher 10 is inversely proportional to the distance d 1 between the pivot axis 25 of the first lever 20 and the direction F 1 of the force exerted on the first pusher 10 during its actuation.
  • the resistance that will be felt during the actuation of the second pusher 12 is inversely proportional to the distance d 2 between the pivot axis 25 of the second lever 22 and the direction F 2 of the force exerted on the first pusher 12 when actuated. If it is desired that this resistance be the same for the two pushers 10, 12, the device illustrated in FIG. figure 1 so that the distances d 1 and d 2 are equal. Of course, it is also possible to choose a desired ratio between the distances d 1 and d 2 that is greater than u less than 1.
  • the figure 2 shows a chronograph control device according to a second embodiment.
  • the device comprises, as for the first embodiment, a first lever 20 pivotally mounted on a first pivot 25, actuated by a first pusher 10, and a second lever pivotally mounted on a second pivot 21 and actuated by a second pusher
  • the two levers 20, 22 are each limited in their movement towards their respective pushers 10, 12 by a stop not shown.
  • the second embodiment comprises a spout 24 cooperating with the notch 32 of the spring 30, this spout 24 not being integral with the first lever 20, but integral with an arm 26 hinged to the first lever 20 at a location designated by the reference 27 in the figure 2 .
  • This arm 26 is pivotally mounted on the same pivot 21 as the second lever 22, but it could also be pivotally mounted on a third pivot.
  • the first lever 20 and the second lever 22 pivot in the same direction B, while the arm 26 pivots in the opposite direction A.
  • the feeling of resistance during the actuation of the first and second pushers 10, 12 respectively depends only on the ratio of the effective lever arms in both cases and therefore only the geometry of the device.
  • the resistance that will be felt when operating one of the two pushers 10, 12 is inversely proportional to the distance d 1 , d 2 between the pivot axis of the lever. 20, 22 associated and the direction F 1 , F 12 of the force exerted on the pusher 10, 12 in question during its actuation.
  • this resistance is the same for the two pushers 10, 12

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)

Description

La présente invention concerne un dispositif de commande de chronographe. Plus particulièrement, elle concerne un tel dispositif pour un chronographe muni d'au moins deux poussoirs.The present invention relates to a chronograph control device. More particularly, it relates to such a device for a chronograph equipped with at least two pushers.

Elle s'applique notamment aux chronographes dits « à deux temps» qui possèdent deux poussoirs, en l'espèce un premier poussoir qui commande le départ et l'arrêt d'un mécanisme de chronographe et un deuxième poussoir qui commande la remise à zéro d'un compteur et d'un organe d'affichage tel qu'une aiguille.It applies in particular to so-called "two-stroke" chronographs that have two pushers, in this case a first pusher that controls the start and stop of a chronograph mechanism and a second pushbutton that controls the reset to zero. a counter and a display member such as a needle.

Les constructeurs souhaitent pouvoir faire en sorte que la sensation de résistance obtenue lors de l'actionnement d'un premier poussoir reste constant par rapport à la résistance ressentie lors de l'actionnement d'un deuxième poussoir et dans un mode préférentiel identique tout en conservant l'indépendance des fonctions des deux poussoirs. Ceci n'est pas toujours le cas pour les chronographes connus, notamment quand un des poussoirs est actionné plus souvent que l'autre. Pour beaucoup d'applications, il est d'ailleurs souhaité qu'une résistance égale pour les deux poussoirs soit obtenue, c'est-à-dire qu'on souhaite que l'utilisateur ressente la même résistance aussi bien quand il actionne le poussoir arrêt/départ que lorsqu'il actionne le poussoir de mise à zéro. D'autre part, il est souhaité que les fonctions des deux poussoirs soient complètement indépendantes l'une de l'autre.The manufacturers wish to be able to make sure that the sensation of resistance obtained during the actuation of a first pusher remains constant with respect to the resistance felt during the actuation of a second pusher and in an identical preferential mode while retaining the independence of the functions of the two pushers. This is not always the case for known chronographs, especially when one of the pushers is operated more often than the other. For many applications, it is also desired that an equal resistance for the two pushers is obtained, that is to say, it is desired that the user feels the same resistance as well when it actuates the pusher stop / start only when it activates the reset pushbutton. On the other hand, it is desired that the functions of the two pushers are completely independent of one another.

Un dispositif de commande de chronographe selon le préambule de la revendication 1 est notamment connu du document GB 698 763 . Ce document décrit un mécanisme de chronographe comprenant deux poussoirs, chacun coopérant avec un levier monté pivotant. Le premier levier coopère avec le deuxième de manière à faire pivoter le deuxième levier lorsque le premier levier est entraîné en rotation. Un ressort vient en appui sur un tenon fixé au deuxième levier, de manière à le positionner en butée contre le deuxième poussoir. Lorsque le deuxième levier est pivoté sous l'action du poussoir, il est soumis à la force de rappel du ressort, tandis que le premier levier est soumis à cette force de rappel indirectement via le deuxième levier. Un inconvénient de ce mécanisme est la dépendance des fonctions des deux poussoirs l'un par rapport à l'autre.A chronograph control device according to the preamble of claim 1 is in particular known from the document GB 698 763 . This document describes a chronograph mechanism comprising two pushers, each cooperating with a pivotally mounted lever. The first lever cooperates with the second so as to rotate the second lever when the first lever is rotated. A spring bears on a pin fixed to the second lever, so as to position it in abutment against the second pusher. When the second lever is pivoted under the action of the pusher, it is subjected to the return force of the spring, while the first lever is subjected to this restoring force indirectly via the second lever. A disadvantage of this mechanism is the dependence of the functions of the two pushers relative to each other.

L'invention a donc pour objectif de remédier à cet inconvénient et de mettre à la disposition des utilisateurs un dispositif de commande de chronographe correspondant aux besoins expliqués ci-dessus.The invention therefore aims to overcome this disadvantage and to provide users with a chronograph control device corresponding to the needs explained above.

A cet effet, l'invention a pour objet un dispositif de commande de chronographe selon la revendication 1. Ce dispositif comporte un premier levier monté pivotant, actionné par un premier poussoir, et limité dans son mouvement en direction du premier poussoir par une première butée, ainsi qu'un deuxième levier monté pivotant actionné par un deuxième poussoir, et limité dans son mouvement en direction du deuxième poussoir par une deuxième butée. Un ressort est monté fixe sur le deuxième levier.For this purpose, the subject of the invention is a chronograph control device according to claim 1. This device comprises a first pivotally mounted lever, actuated by a first pusher, and limited in its movement towards the first pusher by a first stop , and a second pivotally mounted lever actuated by a second pusher, and limited in its movement towards the second pusher by a second stop. A spring is fixedly mounted on the second lever.

Conformément à l'invention, le premier levier est associé à un bras coopérant avec le ressort de manière que lorsque l'un ou l'autre des deux leviers est actionné par l'un des poussoirs, le bras et le ressort se déplacent l'un par rapport à l'autre de manière que le bras est toujours soumis à la force de rappel du ressort. La résistance que l'utilisateur ressent lors de l'actionnement d'un des poussoirs est donc déterminée par la force de rappel dudit ressort et la géométrie du mécanisme, à savoir la longueur des bras de levier impliqués. Si la force de rappel du ressort diminue avec le temps, la résistance ressentie lors de l'actionnement d'un des deux poussoirs diminuera de manière que le rapport de ces deux résistances l'une à l'autre reste toujours constant. La force ressentie lors de l'actionnement du poussoir dépend bien sûr aussi du frottement entre les éléments. Comme le frottement est petit par rapport à la force de rappel du ressort, il sera négligé par la suite.According to the invention, the first lever is associated with an arm cooperating with the spring so that when one or the other of the two levers is actuated by one of the pushers, the arm and the spring move the relative to each other so that the arm is always subjected to the restoring force of the spring. The resistance that the user feels when operating one of the pushers is therefore determined by the return force of said spring and the geometry of the mechanism, namely the length of the lever arms involved. If the return force of the spring decreases with time, the resistance felt during the actuation of one of the two pushers will decrease so that the ratio of these two resistances to one another remains constant. The force felt during the actuation of the pusher depends of course also on the friction between the elements. As the friction is small compared to the restoring force of the spring, it will be neglected thereafter.

Le bras peut être muni d'un bec et coopérer avec le ressort par l'intermédiaire de ce bec. Il est également possible de munir le bras d'une goupille ou une cheville, le bras coopérant avec le ressort par l'intermédiaire de cette goupille ou cette cheville. Cette variante permet de faire coopérer un bras et un ressort qui ne se trouvent pas dans un même plan, ce qui est particulièrement avantageux quand les deux leviers ne se trouvent pas dans un même plan.The arm can be provided with a spout and cooperate with the spring via this spout. It is also possible to provide the arm with a pin or ankle, the arm cooperating with the spring via this pin or this pin. This variant allows to cooperate an arm and a spring that are not in the same plane, which is particularly advantageous when the two levers are not in the same plane.

Selon un premier mode de réalisation, le bras est solidaire du premier levier, et ledit premier levier pivote dans un sens de rotation contraire à celui du deuxième levier. Ce mode de réalisation présente notamment l'avantage d'être simple ce qui facilite le montage du dispositif et donc le montage du chronographe.According to a first embodiment, the arm is secured to the first lever, and said first lever pivots in a direction of rotation opposite to that of the second lever. This embodiment has the particular advantage of being simple which facilitates the mounting of the device and therefore the mounting of the chronograph.

Il est évident que des nombreuses variantes de ce premier mode de réalisation peuvent être imaginées, toutes ces variantes tombant dans le champ de protection de la revendication 1. Le bras et le ressort peuvent en principe coopérer via n'importe quel type de pièce intermédiaire. Le ressort peut bien entendu avoir la forme de n'importe quel type d'élément élastique. Il peut s'agir d'un sautoir, mais il est également possible d'utiliser un élément élastique solidaire avec le deuxième levier, notamment un prolongement lié au levier par un tronçon élastique.It is obvious that many variants of this first embodiment can be imagined, all these variants falling within the protective field of claim 1. The arm and the spring can in principle cooperate via any type of intermediate part. The spring can of course have the shape of any type of elastic element. It may be a jumper, but it is also possible to use a resilient element integral with the second lever, including an extension linked to the lever by an elastic section.

Pour un tel dispositif dans lequel le bras est solidaire du premier levier, ce dernier pivotant dans un sens de rotation contraire à celui du deuxième levier, il est particulièrement avantageux de choisir la géométrie du dispositif de manière que la distance entre un axe de pivotement du premier levier et une direction de la force exercée sur le premier poussoir lors de son actionnement est égale à la distance entre un axe de pivotement du deuxième levier et une direction de la force exercée sur le deuxième poussoir lors de son actionnement. Dans ce cas, la résistance ressentie lors de l'actionnement du premier poussoir est égale à la résistance ressentie lors de l'actionnement du deuxième poussoir. Cette résistance ne dépend que de la force de rappel du ressort et des distances précitées ainsi que du frottement que l'on négligera comme indiqué ci-dessus. Comme, lors de l'actionnement de n'importe lequel des deux poussoirs, le bec et le ressort se déplacent l'un par rapport à l'autre de manière que le bec est toujours soumis à la force de rappel du ressort, le rapport des résistances ressenties ne dépend que du rapport des bras de levier en jeu, et donc que du rapport entre d'une part la distance entre un axe de pivotement du premier levier et une direction de la force exercée sur le premier poussoir, et d'autre part la distance entre un axe de pivotement du deuxième levier et une direction de la force exercée sur le deuxième poussoir.For such a device in which the arm is secured to the first lever, the latter pivoting in a direction of rotation opposite to that of the second lever, it is particularly advantageous to choose the geometry of the device so that the distance between a pivot axis of the first lever and a direction of the force exerted on the first pusher when actuated is equal to the distance between a pivot axis of the second lever and a direction of the force exerted on the second pusher during its actuation. In this case, the resistance felt during the actuation of the first pusher is equal to the resistance felt during the actuation of the second pusher. This resistance depends only on the restoring force of the spring and the aforementioned distances as well as the friction that will be neglected as indicated above. Since, when any of the two pushers are actuated, the spout and the spring move relative to one another so that the spout is always subjected to the return force of the spring, the ratio the resistances felt depend only on the ratio of the lever arms involved, and therefore on the ratio between, on the one hand, the distance between a pivot axis of the first lever and a direction of the force exerted on the first pusher, and secondly the distance between a pivot axis of the second lever and a direction of the force exerted on the second pusher.

Selon un deuxième mode de réalisation, le bras est monté pivotant et articulé à l'extrémité du premier levier, ledit premier levier pivotant dans un même sens de rotation que le deuxième levier, et le bras pivotant dans un sens de rotation contraire à celui des deux leviers. De préférence, le bras est articulé au deuxième levier pivotant autour du même axe que ledit deuxième levier.According to a second embodiment, the arm is pivotally mounted and articulated at the end of the first lever, said first lever pivoting in the same direction of rotation as the second lever, and the arm pivoting in a direction of rotation contrary to that of the two levers. Preferably, the arm is articulated to the second lever pivoting about the same axis as said second lever.

Si l'on souhaite que la résistance ressentie par un utilisateur lors de l'actionnement d'un des poussoirs soit la même pour les deux poussoirs, la géométrie du mécanisme pourra être dimensionnée de manière appropriée. On peut par exemple modifier le rapport des moments nécessaires pour l'actionnement d'un poussoir et donc le rapport des résistances ressenties en jouant sur la longueur des bras de levier impliquésIf it is desired that the resistance felt by a user during the actuation of one of the pushers is the same for both pushers, the geometry of the mechanism can be dimensioned appropriately. For example, it is possible to modify the ratio of the moments necessary for the actuation of a pusher and therefore the ratio of the resistances felt by varying the length of the lever arms involved.

Selon un mode de réalisation particulièrement avantageux, la première et/ou la deuxième butée est formée par le poussoir correspondant.According to a particularly advantageous embodiment, the first and / or second stop is formed by the corresponding pusher.

L'invention sera mieux comprise à la lecture de la description suivante de deux modes de réalisation préférentielles, donnés à titre d'exemple non limitatif, et des dessins annexés dans lesquels :

  • la figure 1 représente une vue du côté rouage d'un dispositif de commande de chronographe suivant un premier mode de réalisation de l'invention, et
  • la figure 2 représente une vue du côté rouage d'un dispositif de commande de chronographe suivant un deuxième mode de réalisation de l'invention.
The invention will be better understood on reading the following description of two preferred embodiments, given by way of non-limiting example, and the appended drawings in which:
  • the figure 1 represents a view of the wheel side of a chronograph control device according to a first embodiment of the invention, and
  • the figure 2 is a view of the wheel side of a chronograph control device according to a second embodiment of the invention.

Comme illustré à la figure 1, le dispositif de commande de chronographe suivant un premier mode de réalisation comporte un premier levier 20 monté pivotant sur un premier pivot 25, actionné par un premier poussoir 10, et un deuxième levier 22 monté pivotant sur le même pivot 25 et actionné par un deuxième poussoir 12. Les deux leviers 20, 22 sont chacun limités dans leur mouvement en direction de leur poussoir 10, 12 respectif par une butée non représentée dans la figure 1. Afin d'éviter un actionnement simultané des deux poussoirs 10, 12, les deux leviers 20, 22 sont fixés l'un à l'autre via une goupille 28 qui peut se déplacer dans un trou longitudinal. Le premier levier 20 se présente sous la forme d'une bascule de remise à zéro et peut commander le déplacement, par exemple, d'une tige-verrou de marteau conventionnelle en vue de libérer un marteau tenu par un ressort. Le deuxième levier 22, quant à lui, commande l'arrêt et le départ d'un compteur du chronographe. L'invention portant uniquement sur le dispositif de commande, le mécanisme de chronographe en tant que tel ne sera pas décrit en détail. Cependant, selon l'invention, le dispositif peut en principe être utilisé avec n'importe quel type de mécanisme horloger, notamment un mécanisme chronographe comprenant des systèmes du type roue à colonnes ou came.As illustrated in figure 1 , the chronograph control device according to a first embodiment comprises a first lever 20 pivotally mounted on a first pivot 25, actuated by a first pusher 10, and a second lever 22 pivotally mounted on the same pivot 25 and actuated by a second Pusher 12. The two levers 20, 22 are each limited in their movement towards their pusher 10, 12 respectively by a stop not shown in FIG. figure 1 . To avoid simultaneous actuation of the two pushers 10, 12, the two levers 20, 22 are fixed to each other via a pin 28 which can move in a longitudinal hole. The first lever 20 is in the form of a reset latch and can control the movement of, for example, a conventional hammer bolt rod to release a spring-loaded hammer. The second lever 22, meanwhile, controls the stop and start of a chronograph counter. Since the invention relates solely to the control device, the chronograph mechanism as such will not be described in detail. However, according to the invention, the device can in principle be used with any type of watch mechanism, in particular a chronograph mechanism comprising column-type or cam-type systems.

Comme on le voit dans la figure 1, un ressort sautoir 30 est monté sur le deuxième levier 22 à l'aide de deux tenons. Ledit ressort 30 possède une forme générale sensiblement en V avec un bras immobile par rapport au deuxième levier 22 et un deuxième bras situé du côté du premier levier 20. En outre, ledit ressort 30 comprend dans la partie extrême du bras situé du côté du premier levier une encoche 32 ou un cran qui coopère avec un bec 24 solidaire du premier levier 20. Ce bec 24 est tenu dans ladite encoche 32 par la force de rappel du ressort 30. Lorsque le premier levier 20 est pivoté sous l'action du premier poussoir 10 sur le pivot 25 en direction de la flèche A, le bec 24 solidaire du premier levier 20 doit surmonter la force de cran qui le tient dans l'encoche 32 du ressort 30. Une fois que cette force est surmontée, l'utilisateur sentira la résistance diminuer et il saura que la remise à zéro souhaitée a été effectuée. Si l'utilisateur continue à actionner le poussoir 10, le bec 24 ne se trouve plus dans ladite encoche 32, mais glisse le long d'un plan incliné 34 avec lequel le ressort 30 se termine, le premier levier 20 s'opposant toujours à la force de rappel du ressort 30. Ce plan incliné 34 assure notamment le retour du levier 20, 22 quand l'utilisateur relâche le poussoir 10, 12.As we see in the figure 1 , a jumper spring 30 is mounted on the second lever 22 with two pins. Said spring 30 has a generally V-shaped shape with a stationary arm relative to to the second lever 22 and a second arm located on the side of the first lever 20. In addition, said spring 30 comprises in the end portion of the arm located on the side of the first lever a notch 32 or a notch which cooperates with a spout 24 secured to the first lever 20. This spout 24 is held in said notch 32 by the return force of the spring 30. When the first lever 20 is pivoted under the action of the first pusher 10 on the pivot 25 in the direction of the arrow A, the spout 24 secured to the first lever 20 must overcome the notch force which holds it in the notch 32 of the spring 30. Once this force is overcome, the user will feel the resistance decrease and he will know that the desired reset has been carried out . If the user continues to actuate the pusher 10, the spout 24 is no longer in said notch 32, but slides along an inclined plane 34 with which the spring 30 terminates, the first lever 20 still opposing the restoring force of the spring 30. This inclined plane 34 ensures in particular the return of the lever 20, 22 when the user releases the pusher 10, 12.

La résistance qui sera ressentie par un utilisateur qui appuie sur le premier poussoir 10 afin de remettre à zéro le mécanisme compteur du chronographe est donc proportionnelle à la force de cran qui doit être surmonté pour sortir le bec 24 de l'encoche 32 dudit ressort 30.The resistance that will be felt by a user who presses on the first pusher 10 in order to reset the counter mechanism of the chronograph is therefore proportional to the notch force that must be overcome to remove the spout 24 from the notch 32 of said spring 30 .

Lorsque le deuxième levier 22 est pivoté sous l'action du deuxième poussoir 12 sur le même pivot 25 en direction de la flèche B, il s'oppose également à cette même force cran déterminé par la géométrie du ressort 30 et par sa force de rappel. Cependant, la force est dans ce cas exercée par le déplacement du ressort 30 et non par celui du bec 24. La force résultante étant la même que lors d'un pivotement du premier levier 20, la sensation de résistance lors de l'actionnement du premier et du deuxième poussoirs 10, 12 respectivement ne dépend que du rapport des bras de levier effectifs dans chaque cas, comme expliqué plus en détail par la suite.When the second lever 22 is pivoted under the action of the second pusher 12 on the same pivot 25 in the direction of the arrow B, it also opposes this same notch force determined by the geometry of the spring 30 and by its restoring force. . However, the force is in this case exerted by the movement of the spring 30 and not by that of the spout 24. The resultant force being the same as when the first lever 20 is pivoted, the feeling of resistance during the actuation of the first and second pushers 10, 12 respectively depends only on the ratio of the effective lever in each case, as explained in more detail later.

La résistance qui sera ressentie lors de l'actionnement du premier poussoir 10 est inversement proportionnelle à la distance d1 entre l'axe de pivotement 25 du premier levier 20 et la direction F1 de la force exercée sur le premier poussoir 10 lors de son actionnement. De la même manière, la résistance qui sera ressentie lors de l'actionnement du deuxième poussoir 12 est inversement proportionnelle à la distance d2 entre l'axe de pivotement 25 du deuxième levier 22 et la direction F2 de la force exercée sur le premier poussoir 12 lors de son actionnement. Si on veut que cette résistance soit la même pour les deux poussoirs 10, 12, il faut dimensionner le dispositif illustré à la figure 1 afin que les distances d1 et d2 soient égales. On peut bien sûr aussi choisir un rapport souhaité entre les distances d1 et d2 qui est supérieur à u inférieur à 1.The resistance that will be felt during the actuation of the first pusher 10 is inversely proportional to the distance d 1 between the pivot axis 25 of the first lever 20 and the direction F 1 of the force exerted on the first pusher 10 during its actuation. In the same manner, the resistance that will be felt during the actuation of the second pusher 12 is inversely proportional to the distance d 2 between the pivot axis 25 of the second lever 22 and the direction F 2 of the force exerted on the first pusher 12 when actuated. If it is desired that this resistance be the same for the two pushers 10, 12, the device illustrated in FIG. figure 1 so that the distances d 1 and d 2 are equal. Of course, it is also possible to choose a desired ratio between the distances d 1 and d 2 that is greater than u less than 1.

La figure 2 montre un dispositif de commande de chronographe suivant un deuxième mode de réalisation. Dans ce deuxième mode de réalisation, les éléments identiques à ceux décrits en liaison avec la figure 1 seront désignés par des mêmes références numériques. Le dispositif comporte, comme pour le premier mode de réalisation, un premier levier 20 monté pivotant sur un premier pivot 25, actionné par un premier poussoir 10, et un deuxième levier 22 monté pivotant sur un deuxième pivot 21 et actionné par un deuxième poussoir 12. Les deux leviers 20, 22 sont chacun limités dans leur mouvement en direction de leurs poussoirs 10, 12 respectifs par une butée non représentée. A la différence du premier mode de réalisation, le deuxième mode de réalisation comporte un bec 24 coopérant avec l'encoche 32 du ressort 30, ce bec 24 n'étant pas solidaire du premier levier 20, mais solidaire d'un bras 26 articulé au premier levier 20 à un endroit désigné par la référence 27 dans la figure 2. Ce bras 26 est monté pivotant sur le même pivot 21 que le deuxième levier 22, mais il pourrait aussi être monté pivotant sur un troisième pivot. En tous les cas, le premier levier 20 et le deuxième levier 22 pivotent dans un même sens B, tandis que le bras 26 pivote dans le sens contraire A. Néanmoins, comme pour le mode de réalisation illustré à la figure 1, la sensation de résistance lors de l'actionnement du premier et du deuxième poussoirs 10, 12 respectivement ne dépend que du rapport des bras de levier effectifs dans les deux cas et donc que de la géométrie du dispositif. Comme pour le premier mode de réalisation décrit ci-dessus, la résistance qui sera ressentie lors de l'actionnement d'un des deux poussoirs 10, 12 est inversement proportionnelle à la distance d1, d2 entre l'axe de pivotement du levier 20, 22 associé et la direction F1, F12 de la force exercée sur le poussoir 10, 12 en question lors de son actionnement. Dans le but de dimensionner le dispositif montré dans la figure 2 afin que cette résistance soit la même pour les deux poussoirs 10, 12, il est nécessaire de tenir compte non seulement des distances d1 et d2, mais aussi de la distance entre l'articulation 27 du bras 26 et le pivot 28 sur lequel pivotent le bras 26 et le deuxième levier 22, ainsi que de l'emplacement dudit pivot 26 par rapport au ressort 30 et au bec 24.The figure 2 shows a chronograph control device according to a second embodiment. In this second embodiment, the elements identical to those described in connection with the figure 1 will be designated by the same numerical references. The device comprises, as for the first embodiment, a first lever 20 pivotally mounted on a first pivot 25, actuated by a first pusher 10, and a second lever pivotally mounted on a second pivot 21 and actuated by a second pusher The two levers 20, 22 are each limited in their movement towards their respective pushers 10, 12 by a stop not shown. Unlike the first embodiment, the second embodiment comprises a spout 24 cooperating with the notch 32 of the spring 30, this spout 24 not being integral with the first lever 20, but integral with an arm 26 hinged to the first lever 20 at a location designated by the reference 27 in the figure 2 . This arm 26 is pivotally mounted on the same pivot 21 as the second lever 22, but it could also be pivotally mounted on a third pivot. In any case, the first lever 20 and the second lever 22 pivot in the same direction B, while the arm 26 pivots in the opposite direction A. Nevertheless, as for the embodiment illustrated in FIG. figure 1 , the feeling of resistance during the actuation of the first and second pushers 10, 12 respectively depends only on the ratio of the effective lever arms in both cases and therefore only the geometry of the device. As for the first embodiment described above, the resistance that will be felt when operating one of the two pushers 10, 12 is inversely proportional to the distance d 1 , d 2 between the pivot axis of the lever. 20, 22 associated and the direction F 1 , F 12 of the force exerted on the pusher 10, 12 in question during its actuation. In order to size the device shown in the figure 2 so that this resistance is the same for the two pushers 10, 12, it is necessary to take into account not only the distances d 1 and d 2 , but also the distance between the articulation 27 of the arm 26 and the pivot 28 on which pivoting the arm 26 and the second lever 22, as well as the location of said pivot 26 relative to the spring 30 and the spout 24.

Claims (9)

  1. Chronograph control device including:
    - a first, pivotably mounted lever (20), and arranged for being activated by a first push-button (10), and whose movement in the direction of the first push-button is limited (10) by a first stop member,
    - a second, pivotably mounted lever (22), and arranged for being activated by a second push-button (12), and whose movement in the direction of the second push-button (12) is limited by a second stop member, characterized in that a spring (30) is mounted on the second lever (22), and in that the first lever (20) is associated with an arm (26) that cooperates with the spring (30) such that, when one or other of the two levers (20, 22) is activated by one of the push-buttons (10, 12), the arm (26) and the spring (30) move relative to each other in such a way that the arm (26) is subjected to the return force of the spring (30).
  2. Chronograph control device according to claim 1, characterized in that the arm (26) is provided with a beak (24) that cooperates with the spring (30).
  3. Chronograph control device according to claim 1, characterized in that the arm (26) is provided with a pin or peg that cooperates with the spring (30).
  4. Chronograph control device according to any of the preceding claims, characterized in that the arm is attached to the first lever (20) and in that said first lever (20) is arranged for pivoting in an opposite direction of rotation (A) to that (B) of the second lever (22).
  5. Chronograph control device according to claim 4, characterized in that the distance (d1) between a pivoting axis (25) of the first lever (20) and a direction (F1) of the force exerted on the first push-button (10) when said push-button is activated, is equal to the distance (d2) between a pivoting axis (25) of the second lever (22) and a direction (F2) of the force exerted on the second push-button (12), when said push-button is activated.
  6. Chronograph control device according to claim 1, characterized in that the arm (26) is pivotably mounted and articulated on the end of the first lever (20), said first lever (20) pivoting in the same direction of rotation (B) as the second lever and the arm (26) pivoting in the opposite direction of rotation (A) to the two levers (20, 22).
  7. Chronograph control lever according to any of the preceding claims, characterized in that the arm (26) is articulated on the second lever (22) and pivots about the same axis (21) as said second lever (22).
  8. Chronograph control device according to any of the preceding claims, characterized in that the first and/or second stop member is formed by the corresponding push-button (10, 12).
  9. Chronograph control device according to any of the preceding claims, characterized in that the spring (30) is a jumper spring.
EP07122635A 2007-12-07 2007-12-07 Chronograph control device Active EP2068211B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP07122635A EP2068211B1 (en) 2007-12-07 2007-12-07 Chronograph control device
KR1020080121130A KR20090060156A (en) 2007-12-07 2008-12-02 Chronograph control device
SG200808977-3A SG153034A1 (en) 2007-12-07 2008-12-03 Chronograph control device
CN2008101846106A CN101452256B (en) 2007-12-07 2008-12-08 Chronograph control device
US12/330,067 US8235584B2 (en) 2007-12-07 2008-12-08 Chronograph control device
JP2008312082A JP5411487B2 (en) 2007-12-07 2008-12-08 Chronograph control device
HK09110826.0A HK1133095A1 (en) 2007-12-07 2009-11-19 Chronograph control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07122635A EP2068211B1 (en) 2007-12-07 2007-12-07 Chronograph control device

Publications (2)

Publication Number Publication Date
EP2068211A1 EP2068211A1 (en) 2009-06-10
EP2068211B1 true EP2068211B1 (en) 2013-03-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP07122635A Active EP2068211B1 (en) 2007-12-07 2007-12-07 Chronograph control device

Country Status (7)

Country Link
US (1) US8235584B2 (en)
EP (1) EP2068211B1 (en)
JP (1) JP5411487B2 (en)
KR (1) KR20090060156A (en)
CN (1) CN101452256B (en)
HK (1) HK1133095A1 (en)
SG (1) SG153034A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5536623B2 (en) * 2010-02-03 2014-07-02 セイコーインスツル株式会社 Chronograph clock
WO2013033666A1 (en) * 2011-09-01 2013-03-07 Stefan Johansson Timepiece case with integrated pusher and crown
EP2602675B1 (en) * 2011-12-08 2014-08-27 ETA SA Manufacture Horlogère Suisse Timepiece movement comprising a chronograph mechanism with column wheel
EP3396469A1 (en) * 2017-04-28 2018-10-31 Montres Jaquet Droz SA Offset timepiece control mechanism

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GB698763A (en) 1951-05-31 1953-10-21 Junghans Geb Ag Improvements in and relating to chronographs
US2671308A (en) * 1951-07-05 1954-03-09 Lapanouse S A Center seconds chronograph
DE1773023A1 (en) * 1967-06-14 1971-10-28 Valjoux Sa Device for resetting two chronograph counters to zero
DE1933049B2 (en) * 1969-06-30 1971-09-30 Durowe Gmbh, 7530 Pforzheim WORLD TIME CLOCK
JPS4881566A (en) * 1971-12-13 1973-10-31
CH533532A (en) * 1972-01-19 1973-02-15 Rudolf Schweizer Fa Method for signaling the passage of a rail vehicle and device for carrying out the method
JPS5432348B2 (en) * 1972-02-25 1979-10-13
JPS4898375A (en) * 1972-03-28 1973-12-13
JPS5289167U (en) * 1975-12-26 1977-07-04
DE2837939C2 (en) * 1978-08-31 1980-10-23 Iwc International Watch Co. Ag, Schaffhausen Watch case with push buttons
JPS618396Y2 (en) * 1980-06-06 1986-03-14
CH670187GA3 (en) * 1987-05-12 1989-05-31
EP0404468B1 (en) * 1989-06-19 1995-12-06 Seiko Epson Corporation Timepiece
US5214625A (en) * 1989-06-19 1993-05-25 Seiko Epson Corporation Setting mechanism for an analog timepiece
CH678911B5 (en) * 1990-04-12 1992-05-29 Ebauchesfabrik Eta Ag
CN2092116U (en) * 1990-09-07 1992-01-01 地方国营汕头市教学仪器厂 Start, stop and reset mechanism of stop-watch
CH690524A5 (en) 1995-10-31 2000-09-29 Rolex Montres Piece chronograph mechanism watchmaking.
EP1406132B1 (en) * 2002-10-04 2006-04-26 ETA SA Manufacture Horlogère Suisse Coupling mechanism for a chronographe
JP4244643B2 (en) * 2003-01-28 2009-03-25 セイコーエプソン株式会社 Clock with chronograph
EP1818734A1 (en) * 2006-02-08 2007-08-15 Montres Journe S.A. Push-button device for controlling a function from the outside of a watch case

Also Published As

Publication number Publication date
EP2068211A1 (en) 2009-06-10
CN101452256B (en) 2012-05-16
HK1133095A1 (en) 2010-03-12
US8235584B2 (en) 2012-08-07
SG153034A1 (en) 2009-06-29
CN101452256A (en) 2009-06-10
JP2009139384A (en) 2009-06-25
JP5411487B2 (en) 2014-02-12
KR20090060156A (en) 2009-06-11
US20090147629A1 (en) 2009-06-11

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