EP3876042A1 - System for resetting a chronograph - Google Patents

System for resetting a chronograph Download PDF

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Publication number
EP3876042A1
EP3876042A1 EP20161120.9A EP20161120A EP3876042A1 EP 3876042 A1 EP3876042 A1 EP 3876042A1 EP 20161120 A EP20161120 A EP 20161120A EP 3876042 A1 EP3876042 A1 EP 3876042A1
Authority
EP
European Patent Office
Prior art keywords
hammer
chronograph
mobile
resetting
flexible element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20161120.9A
Other languages
German (de)
French (fr)
Other versions
EP3876042B1 (en
Inventor
M. Jean-Philippe ROCHAT
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Montres Breguet SA
Original Assignee
Montres Breguet SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Montres Breguet SA filed Critical Montres Breguet SA
Priority to EP20161120.9A priority Critical patent/EP3876042B1/en
Priority to EP21153632.1A priority patent/EP3876043B1/en
Priority to US17/164,170 priority patent/US11687043B2/en
Priority to JP2021025037A priority patent/JP7066889B2/en
Priority to CN202110253208.4A priority patent/CN113359405B/en
Publication of EP3876042A1 publication Critical patent/EP3876042A1/en
Application granted granted Critical
Publication of EP3876042B1 publication Critical patent/EP3876042B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • G04F7/0814—Watches or clocks with stop devices, e.g. chronograph with reset mechanisms with double hammer, i.e. one hammer acts on two counters
    • 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
    • G04F7/0819—Watches or clocks with stop devices, e.g. chronograph with reset mechanisms with triple hammer, i.e. one hammer acts on three counters
    • 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
    • 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
    • G04B27/00—Mechanical devices for setting the time indicating means
    • 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
    • G04B27/00—Mechanical devices for setting the time indicating means
    • G04B27/001—Internal gear therefor, e.g. for setting the second hand or for setting several clockworks

Definitions

  • the invention relates to a system for resetting a chronograph.
  • the system is provided with a chronograph counting train, which comprises at least one minute counter having a minute mobile, and a seconds counter, which includes a chronograph mobile.
  • the system comprises a hammer held blocked by a blocking means and movable from an inactive position, where the hammer is blocked by the blocking means, and an active position, when the hammer is released, for resetting the chronograph in contact. different mobiles.
  • a chronograph mechanism comprises a chronograph counting train, which makes it possible to count time from the second by means of a chronograph mobile or seconds counter, to the minute by means of a minute counter, and possibly to the second. hour by means of an hour counter.
  • Each counter includes an indicator member moving on a corresponding graduated scale.
  • the indicator members are traditionally indexed to an angular position corresponding to the zero of each graduated scale.
  • each indicator member is generally carried by the axis of a corresponding element of the gear train. The connection between the element of the train and its axis is friction to allow these two members, an independent angular displacement, beyond a certain torque.
  • Indicator organs are indexed by means of corresponding heart and hammer mechanisms. The use of Friction links and mechanisms of hearts and hammers mean that the torque to be supplied when resetting the various counters can be large, and a lot of energy is consumed.
  • buckling By way of comparison, in a traditional chronograph timepiece, a so-called “buckling” device is often used. Such a device creates a hard point when a push-button is pressed and once the hard point has passed, by an inertia effect the function for resetting is performed. It should be noted that the spring pressed and which has passed the hard point has a negative friction effect throughout its function for resetting, and a large amount of energy is consumed.
  • the object of the invention is therefore to overcome the drawbacks of the state of the art by providing a system for resetting a chronograph, in particular a timepiece.
  • An objective of the invention is precisely to benefit from an accumulation of energy from a flexible element, such as an on-board spring, linked to a hammer to restore this energy when the hammer is released for resetting the device. chronograph.
  • the invention relates to a system for resetting a chronograph, which comprises the characteristics defined in independent claim 1.
  • An advantage of the system for resetting a chronograph according to the invention lies in the fact that it comprises a flexible element fixed by a first end to an upper end of a hammer, and by a second end to a first portion.
  • a control rocker mounted to rotate on a base or a frame or a plate of the timepiece.
  • an external activation member such as a push-button
  • a chronograph reset operation an external activation member, such as a push-button, is pressed on a second portion of the control lever causing the lever to turn around its axis of rotation, and thus driving the second end of the flexible element, such as an on-board spring, with a certain force so that it stores energy during this operation.
  • Another advantage of the system for resetting a chronograph according to the invention lies in the fact that it comprises a means for locking the hammer, which is preferably a hook member rotatably mounted on a base or frame or plate. the timepiece and blocking the hammer by a fixed pin mounted on the hammer when the hook at one end hooks onto the pin.
  • a means for locking the hammer which is preferably a hook member rotatably mounted on a base or frame or plate. the timepiece and blocking the hammer by a fixed pin mounted on the hammer when the hook at one end hooks onto the pin.
  • this end of the second portion of the control lever is initially distant from and facing the second end of the control lever. hook member.
  • This flexible element still stores energy until the moment when the hook of the first end of the hook member is no longer in contact with the locking pin. After that, the hammer is driven by the first end of the flexible element having stored enough energy that it releases to carry out a resetting of the chronograph.
  • the system allows energy to be stored through the flexible element to perform a function of resetting the chronograph to zero, and also allows frank triggering without friction via the hook member. when releasing the hammer to reset the chronograph.
  • the figures 1a and 1b show a bottom view of the main elements of a system 1 for resetting a chronograph in a position before the resetting operation. It is normally also made up of a chronograph 2 counting train, which is presented in more detail in the figures 4 and 5 described below. It can be envisaged to mount the reset system 1 in a timepiece comprising a basic time movement and a chronograph movement, which can be autonomous with its own movement, and therefore its own barrel. However, provision can also be made for using the basic movement of the timepiece with the chronograph.
  • the zero-reset system 1 comprises a chronograph mobile 3, which is normally the seconds mobile, which is part of the chronograph counting train 2 of the figures 4 and 5 .
  • This chronograph counting train comprises in particular a minute counter, which comprises a minute mobile 4, and a seconds counter, which comprises a chronograph mobile 3.
  • the chronograph counting train may also include an hour counter, which comprises an hour counter.
  • the mobile chrono or seconds 3 comprises a heart 13 mounted on the central axis 23 of the mobile chrono, this heart 13 constitutes a cam shape.
  • the minutes mobile 4 comprises a heart 14 mounted on the central axis 24.
  • the hours module 5 comprises a heart 15 mounted on the central axis 25.
  • a timepiece provided with a chronograph usually comprises chronograph mobiles, which are mounted to pivot in friction on a frame or a plate of the timepiece. This means that when resetting the chronograph, it is possible to turn with sufficient torque the moving parts held only by friction by their axis in an opening provided for this purpose, until the chronograph reset indication.
  • the reset system 1 mainly comprises a flexible element 10, which may be an on-board spring, which is connected between a reset control means 12 and an end part of the hammer 6, which is used for the reset. to zero of the chronograph.
  • the flexible element 10 is configured in such a way as to store energy during a movement of the control means 12 and before the release of the hammer 6 blocked by a locking means 11 to be able at the time of the release of the hammer 6 to restore this stored energy and drive the hammer 6 to reset the chronograph.
  • the flexible element 10 is linked by a first end 10a to the hammer 6, for example to an end part of the hammer 6 used for resetting the chronograph.
  • a pin 19 is inserted at the first end 10a of the flexible element 10 and is accommodated in an elongated opening 9 made at a planar upper end of the hammer 6.
  • the second end 10b of the flexible element 10 is fixed to the control means. 12, which is mounted on the base or the frame or the plate of the timepiece, and is used during the operation of resetting the chronograph.
  • the flexible element 10, such as the on-board spring is of arcuate shape between its first end 10a and its second end 10b. This arcuate shape in the direction of an external activation member B, such as a push-button, which can act on the control means 12, can be adapted to improve the energy stored before resetting the chronograph.
  • the control means 12 is preferably a control lever, for example planar, which is rotatably mounted preferably by a fixing element 22, which is rather a screw 22 passing through a central opening of the control lever and which is fixedly screwed on. in a corresponding thread in the base or the frame or the plate of the part clockwork.
  • This control lever 12, which is rotatably mounted around the axis defined by the screw 22, comprises a first portion of a first side of the axis, to which is fixed by studs 40 or other fixing means, the second end 10b of the flexible element 10.
  • the control lever 12 further comprises a second portion of a second side of the axis of rotation opposite to the first side, and at one end of which a push-button B can act for resetting the chronograph.
  • the hammer 6 in a blocked position, the hammer 6 is kept blocked by a blocking means 11.
  • the push-button B presses the second portion of the lever.
  • rotary control 12 and therefore acts first of all on the flexible element from its second end 10b to effect an accumulation of energy before the effective release of the hammer 6, which occurs by pressing the push-button even further B.
  • the hammer 6 is preferably a metal plate, and is mounted in translation with a first longitudinal opening 7 and a second longitudinal opening 8 in which are placed fixed rods 17, 18, which are for example a first screw 17 and a second screw 18. These two screws 17, 18 can be screwed into the threads provided for this purpose on a base or frame or plate of the timepiece not shown, but leaving the hammer free to move between an inactive locking position and a active reset position.
  • the two longitudinal openings 7, 8 are preferably of the same length and on the same line over the length of the hammer 6. The length of the longitudinal openings is adapted such that the hammer 6 can occupy an inactive locking position and an active position. of resetting the chronograph in contact with the various hearts 13, 14 of the mobiles 3, 4 or also of the heart 15 of the mobile 5 explained below.
  • the locking means 11 of the hammer 6 is preferably a hook member 11 rotatably mounted on the hammer 6.
  • the hook member 11 of planar shape comprises a central opening through which passes the second. screw 18, the tapping of which is in the second longitudinal opening 8 of the hammer 6 defined as the upper side of the hammer 6, where the push-button B acts.
  • the hook member 11 comprises at a first end 11a, a hook for coming hang on a pin 26 fixed vertically on the hammer 6 near the second longitudinal opening 8 and between the two longitudinal openings 7, 8 of the hammer 6.
  • the second end 11b of the hook member 11, which is located d 'an opposite side with respect to the axis of rotation of the second screw 18, comprises a rod 21 by which a first free end of a return spring 31 of the hook member 11 can act to return the member to hook 11 in a locking position of the hammer 6.
  • a second end of the return spring 31 can be fixed by a screw 51 screwed into a corresponding thread made in the base or the frame or the plate of the timepiece.
  • an inner end 12 'of the second portion of the rotary control lever 12 is disposed opposite and distant from the second end 11b of the hook member 11.
  • the flexible element 10 first of all stores energy by the rotation of the control rocker 12 following the pressure on the push-button B.
  • the element hose 10 stores energy already before the inner end 12 'of the second portion of the control lever 12 pushes the second end 11b of the hook member 11, and this until the moment when the hook of the first end 11a of the hook member 11 no longer catches the pin 26 of the hammer 6, which makes it possible to have a clear release without additional friction.
  • the hammer 6 is no longer in a blocked position and can act more easily for resetting the chronograph firstly thanks to the return of the energy stored by the flexible element 10 and subsequently by the press of push button B of a user.
  • the operation of resetting the chronograph is facilitated.
  • the hammer 6 is pushed by the flexible element 10 from its first end 10a and in the direction of the various mobiles 3, 4, 5, in particular the hearts 13, 14, 15 of the mobiles.
  • the hammer 6 comprises three contact portions 16a, 16b, 16c.
  • a first contact portion 16a arranged on the hammer 6 comes into contact with the heart 13 of the chronograph mobile 3.
  • a second contact portion 16b arranged on the hammer 6 comes into contact with the heart 15 of the hours mobile 5.
  • the first contact portion 16a and the second contact portion 16b form an assembly mounted to rotate about an axis 37 on the hammer 6 near the first longitudinal opening 17.
  • An angular stop 36 is provided between the first contact portion 16a and the second portion of contact 16b. This stop 36 passes with a certain clearance in a central opening of the assembly, which makes it possible to compensate for the geometric defects of the components.
  • a third contact portion 16c arranged on the hammer 6 near the first end 10a of the flexible element 10 comes into contact with the heart 14 of the minute mobile 4.
  • This third contact portion 16c is connected by a band.
  • U-shaped metal, and its end opposite the contact portion is fixed by studs 43 or other fastening means to the upper end of the hammer 6.
  • An adjusting eccentric 44 is fixed in a corresponding hole at the end upper hammer 6 to adjust the position of the third contact portion 16c.
  • each dish of hearts 13, 14, 15 are held in a zero position by each respective portion of contact 16a, 16b, 16c.
  • the screws or other rods 17 and 18, which are in each longitudinal opening 7 and 8, are at a high end of the longitudinal openings 7 and 8 when resetting and before being placed in an inactive locking position of the hammer 6 a after pushbutton B is released.
  • the length of each longitudinal opening 7 and 8 is determined such that each screw 17 and 18 can move from an inactive position when locking hammer 6 and an active reset position.
  • a minute hand 34 must be frictionally connected to the axis 24 to indicate the chronograph minutes on a dial, not shown, of the timepiece.
  • An hour hand 35 must be frictionally connected to the axis 25 to indicate the hours of the chronograph on the not shown dial of the timepiece. The same may apply to the chronograph seconds indication, but no hand is shown.
  • the figure 2 which only shows the bottom view of the chronograph reset system, just illustrates in an illustrative manner the energy stored by the flexible element 10 just before the release of the hammer 6 when the hook at the first end 11a of the hook member 11 releases it from the locking.
  • the second end 10b of the flexible element 10 tends to rotate clockwise, straightening the flexible element 10 and thus storing energy to be restored during resetting the chronograph.
  • all the other components of the figure 2 will not be repeated since they have already been explained with reference to the figures 1a and 1b .
  • the figures 4 and 5 following shows a chronograph counting train 2, which comprises on the one hand a minute train at the figure 4 and on the other hand a cog of hours at the figure 5 .
  • the different wheels for the minute wheel and the hour wheel are shown connected by dotted lines.
  • a first toothed wheel 62 disposed on the axis 23 of the chronograph mobile 3 meshes with an intermediate wheel 63, the diameter of which is greater than the diameter of the first toothed wheel 62.
  • a second intermediate wheel 64 of smaller diameter is placed on the intermediate wheel 63 to drive a wheel of the hour train explained below.
  • a third coaxial proximal intermediate wheel 65 and of smaller diameter than the intermediate wheel 63 makes it possible to drive a large wheel 66 mounted on the axis 24 of the minute mobile 4.
  • the size of each wheel is of course determined as a function of time. counted and displayed to go from the second with a first indicator member to the minute with a second indicator member, such as a hand 34 on a dial, not shown.
  • the figure 5 mainly represents the cog of the hours.
  • the first toothed wheel 62 disposed on the axis 23 of the chronograph mobile 3 meshes with the intermediate wheel 63, the diameter of which is greater than the diameter of the first toothed wheel 62.
  • the second intermediate wheel 64 of smaller diameter meshes with a second intermediate wheel 68 of larger diameter which itself comprises another small below intermediate wheel which is intended to drive another large wheel 67, of which a proximal wheel of smaller diameter on the same axis drives an hour wheel 69.
  • the size of each wheel is of course determined as a function of the time counted and to be displayed for go from the second with a first indicator member to the time with a third indicator member, such as a hand 35 on a dial, not shown.

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

Abstract

Le système (1) de remise à zéro d'un chronographe est muni d'un rouage de comptage chronographe (2), qui comprend au moins un compteur de minutes ayant un mobile des minutes (4), et un compteur de secondes, qui comprend un mobile chrono (3). Le système (1) comprend un marteau (6) maintenu bloqué par un moyen de blocage (11) et déplaçable depuis une position inactive, où le marteau (6) est bloqué par le moyen de blocage (11), et une position active, quand le marteau (6) est débloqué, pour la remise à zéro du chronographe en contact des différents mobiles (3, 4). Le système (1) comprend un élément flexible (10), tel qu'un ressort embarqué, relié entre un moyen de commande (12) de remise à zéro et le marteau (6) utilisé pour la remise à zéro du chronographe, et est configuré de telle manière à emmagasiner de l'énergie lors d'un déplacement du moyen de commande (12) et avant le déblocage du marteau (6) bloqué par le moyen de blocage (11) pour être en mesure au moment du déblocage du marteau (6) de restituer cette énergie emmagasinée et entraîner le marteau (6) pour la remise à zéro du chronographe.The system (1) for resetting a chronograph is provided with a chronograph counting gear train (2), which comprises at least one minute counter having a minute mobile (4), and a seconds counter, which includes a chronograph mobile (3). The system (1) comprises a hammer (6) held blocked by a blocking means (11) and movable from an inactive position, where the hammer (6) is blocked by the blocking means (11), and an active position, when the hammer (6) is released, for resetting the chronograph in contact with the various moving parts (3, 4). The system (1) comprises a flexible element (10), such as an on-board spring, connected between a reset control means (12) and the hammer (6) used for resetting the chronograph, and is configured in such a way as to store energy during a movement of the control means (12) and before the release of the hammer (6) blocked by the locking means (11) to be able at the time of the release of the hammer (6) to restore this stored energy and drive the hammer (6) to reset the chronograph.

Description

Domaine de l'inventionField of the invention

L'invention concerne un système de remise à zéro d'un chronographe. Le système est muni d'un rouage de comptage chronographe, qui comprend au moins un compteur de minutes ayant un mobile des minutes, et un compteur de secondes, qui comprend un mobile chrono. Le système comprend un marteau maintenu bloqué par un moyen de blocage et déplaçable depuis une position inactive, où le marteau est bloqué par le moyen de blocage, et une position active, quand le marteau est débloqué, pour la remise à zéro du chronographe en contact des différents mobiles.The invention relates to a system for resetting a chronograph. The system is provided with a chronograph counting train, which comprises at least one minute counter having a minute mobile, and a seconds counter, which includes a chronograph mobile. The system comprises a hammer held blocked by a blocking means and movable from an inactive position, where the hammer is blocked by the blocking means, and an active position, when the hammer is released, for resetting the chronograph in contact. different mobiles.

Arrière-plan de l'inventionBackground of the invention

Généralement un mécanisme de chronographe comprend un rouage de comptage chronographe, qui permet de compter le temps depuis la seconde au moyen d'un mobile de chronographe ou compteur de secondes, vers la minute au moyen d'un compteur de minutes, et éventuellement vers l'heure au moyen d'un compteur d'heures. Chaque compteur comprend un organe indicateur se déplaçant sur une échelle graduée correspondante. Lors de la remise à zéro du chronographe, les organes indicateurs sont traditionnellement indexés à une position angulaire correspondant au zéro de chaque échelle graduée. Pour cela, chaque organe indicateur est généralement porté par l'axe d'un élément correspondant du rouage. La liaison entre l'élément du rouage et son axe est à friction pour permettre à ces deux organes, un déplacement angulaire indépendant, au-delà d'un certain couple. Les organes indicateurs sont indexés au moyen de mécanismes de cœurs et de marteaux correspondants. L'utilisation de liaisons à friction et de mécanismes de coeurs et de marteaux signifie que le couple à fournir lors de la remise à zéro des différents compteurs peut être important, et une énergie importante est consommée.Generally, a chronograph mechanism comprises a chronograph counting train, which makes it possible to count time from the second by means of a chronograph mobile or seconds counter, to the minute by means of a minute counter, and possibly to the second. hour by means of an hour counter. Each counter includes an indicator member moving on a corresponding graduated scale. When the chronograph is reset to zero, the indicator members are traditionally indexed to an angular position corresponding to the zero of each graduated scale. For this, each indicator member is generally carried by the axis of a corresponding element of the gear train. The connection between the element of the train and its axis is friction to allow these two members, an independent angular displacement, beyond a certain torque. Indicator organs are indexed by means of corresponding heart and hammer mechanisms. The use of Friction links and mechanisms of hearts and hammers mean that the torque to be supplied when resetting the various counters can be large, and a lot of energy is consumed.

A titre comparatif dans une pièce d'horlogerie à chronographe traditionnelle, il est souvent utilisé un dispositif dit « de flambage ». Un tel dispositif crée un point dur lors de la pression sur un bouton-poussoir et une fois que le point dur est passé, par un effet d'inertie la fonction pour la remise à zéro est effectuée. Il est à noter que le ressort pressé et qui a passé le point dur à un effet de frottement négatif tout au long de sa fonction pour la remise à zéro, et une énergie importante est consommée.By way of comparison, in a traditional chronograph timepiece, a so-called “buckling” device is often used. Such a device creates a hard point when a push-button is pressed and once the hard point has passed, by an inertia effect the function for resetting is performed. It should be noted that the spring pressed and which has passed the hard point has a negative friction effect throughout its function for resetting, and a large amount of energy is consumed.

Dans ces conditions, il doit être trouvé un moyen permettant de pallier à cette énergie consommée uniquement pour la remise à zéro des différents compteurs. Un barillet supplémentaire peut être utilisé pour apporter l'énergie nécessaire, mais des problèmes d'encombrement sont constatés par rapport aux autres éléments de base de la pièce d'horlogerie. Il est donc important de disposer d'autres mécanismes pour la remise à zéro du chronographe.Under these conditions, a means must be found to compensate for this energy consumed solely for resetting the various counters to zero. An additional barrel can be used to provide the necessary energy, but space requirements are observed with respect to the other basic elements of the timepiece. It is therefore important to have other mechanisms available for resetting the chronograph.

Résumé de l'inventionSummary of the invention

L'invention a donc pour but de pallier les inconvénients de l'état de la technique en fournissant un système de remise à zéro d'un chronographe, notamment d'une pièce d'horlogerie. Un objectif de l'invention est précisément de bénéficier d'une accumulation d'énergie d'un élément flexible, tel qu'un ressort embarqué, lié à un marteau pour restituer cette énergie au moment du déblocage du marteau pour la remise à zéro du chronographe.The object of the invention is therefore to overcome the drawbacks of the state of the art by providing a system for resetting a chronograph, in particular a timepiece. An objective of the invention is precisely to benefit from an accumulation of energy from a flexible element, such as an on-board spring, linked to a hammer to restore this energy when the hammer is released for resetting the device. chronograph.

A cet effet, l'invention concerne un système de remise à zéro d'un chronographe, qui comprend les caractéristiques définies dans la revendication indépendante 1.To this end, the invention relates to a system for resetting a chronograph, which comprises the characteristics defined in independent claim 1.

Des formes d'exécution particulières du système de remise à zéro sont définies dans les revendications dépendantes 2 à 14.Particular embodiments of the reset system are defined in dependent claims 2 to 14.

Un avantage du système de remise à zéro d'un chronographe selon l'invention réside dans le fait qu'il comprend un élément flexible fixé par une première extrémité à une extrémité supérieure d'un marteau, et par une seconde extrémité à une première portion d'une bascule de commande montée rotative sur une base ou un bâti ou une platine de la pièce d'horlogerie. Lors d'une opération de remise à zéro du chronographe, un organe externe d'activation, tel qu'un bouton-poussoir, est pressé sur une seconde portion de la bascule de commande faisant tourner la bascule autour de son axe de rotation, et ainsi entraîner la seconde extrémité de l'élément flexible, tel qu'un ressort embarqué, avec une certaine force pour qu'il emmagasine de l'énergie lors de cette opération.An advantage of the system for resetting a chronograph according to the invention lies in the fact that it comprises a flexible element fixed by a first end to an upper end of a hammer, and by a second end to a first portion. a control rocker mounted to rotate on a base or a frame or a plate of the timepiece. During a chronograph reset operation, an external activation member, such as a push-button, is pressed on a second portion of the control lever causing the lever to turn around its axis of rotation, and thus driving the second end of the flexible element, such as an on-board spring, with a certain force so that it stores energy during this operation.

Un autre avantage du système de remise à zéro d'un chronographe selon l'invention réside dans le fait qu'il comprend un moyen de blocage du marteau, qui est de préférence un organe à crochet monté rotatif sur une base ou bâti ou platine de la pièce d'horlogerie et bloquant le marteau par une goupille fixe montée sur le marteau lorsque le crochet à une première extrémité vient se crocher sur la goupille. Avant de pousser la seconde extrémité de l'organe à crochet par une extrémité de la seconde portion de la bascule de commande, cette extrémité de la seconde portion de la bascule de commande se trouve initialement distante et en regard de la seconde extrémité de l'organe à crochet. Ainsi lors de l'action sur le bouton-poussoir poussant la seconde portion de la bascule de commande, l'élément flexible est contraint et emmagasine de l'énergie avant même que la seconde extrémité de l'organe à crochet soit poussée. Cet élément flexible emmagasine encore de l'énergie jusqu'au moment où le crochet de la première extrémité de l'organe à crochet n'est plus un contact de la goupille de blocage. Après cela, le marteau est entraîné par la première extrémité de l'élément flexible ayant emmagasiné suffisamment d'énergie qu'il restitue pour opérer une remise à zéro du chronographe.Another advantage of the system for resetting a chronograph according to the invention lies in the fact that it comprises a means for locking the hammer, which is preferably a hook member rotatably mounted on a base or frame or plate. the timepiece and blocking the hammer by a fixed pin mounted on the hammer when the hook at one end hooks onto the pin. Before pushing the second end of the hook member through one end of the second portion of the control lever, this end of the second portion of the control lever is initially distant from and facing the second end of the control lever. hook member. Thus during the action on the push-button pushing the second portion of the control rocker, the flexible element is constrained and stores energy even before the second end of the hook member is pushed. This flexible element still stores energy until the moment when the hook of the first end of the hook member is no longer in contact with the locking pin. After that, the hammer is driven by the first end of the flexible element having stored enough energy that it releases to carry out a resetting of the chronograph.

Ainsi, le système permet d'emmagasiner de l'énergie par l'intermédiaire de l'élément flexible pour réaliser une fonction de remise à zéro du chronographe, et permet également un déclenchement franc sans frottement par l'intermédiaire de l'organe à crochet lors du déblocage du marteau pour la remise à zéro du chronographe.Thus, the system allows energy to be stored through the flexible element to perform a function of resetting the chronograph to zero, and also allows frank triggering without friction via the hook member. when releasing the hammer to reset the chronograph.

Brève description des dessinsBrief description of the drawings

Les buts, avantages et caractéristiques du système de remise à zéro d'un chronographe apparaîtront mieux dans la description suivante notamment en regard des dessins sur lesquels :

  • les figures 1a et 1b représentent une vue de dessous et une vue tridimensionnelle de dessous du système de remise à zéro d'un chronographe avant l'opération d'une remise à zéro du chronographe selon l'invention,
  • la figure 2 représente une vue de dessous du système de remise à zéro d'un chronographe juste avant le déblocage d'un marteau pour l'opération de remise à zéro du chronographe selon l'invention,
  • les figures 3a et 3b représentent une vue de dessous et une vue tridimensionnelle de dessous du système de remise à zéro d'un chronographe lors de l'opération de remise à zéro du chronographe une fois que le marteau est débloqué selon l'invention,
  • la figure 4 représente une vue tridimensionnelle d'un rouage de comptage chronographe en montrant principalement un rouage compteur de minutes du système de remise à zéro selon l'invention, et
  • la figure 5 représente une vue tridimensionnelle d'un rouage de comptage chronographe en montrant principalement un rouage compteur de minutes d'heures du système de remise à zéro selon l'invention.
The aims, advantages and characteristics of the system for resetting a chronograph will appear better in the following description, in particular with regard to the drawings in which:
  • the figures 1a and 1b represent a view from below and a three-dimensional view from below of the system for resetting a chronograph before the operation of resetting the chronograph according to the invention,
  • the figure 2 shows a bottom view of the system for resetting a chronograph just before the release of a hammer for the operation of resetting the chronograph according to the invention,
  • the figures 3a and 3b represent a view from below and a three-dimensional view from below of the system for resetting a chronograph during the operation of resetting the chronograph once the hammer is released according to the invention,
  • the figure 4 represents a three-dimensional view of a chronograph counting train, mainly showing a minute counter train of the reset system according to the invention, and
  • the figure 5 represents a three-dimensional view of a chronograph counting gear train, mainly showing a minute-hour counter gear of the reset system according to the invention.

Description détaillée de l'inventionDetailed description of the invention

Dans la description suivante, des éléments d'un système de remise à zéro d'un chronographe, qui sont bien connus dans ce domaine technique, ne seront décrits que sommairement.In the following description, elements of a system for resetting a chronograph, which are well known in this technical field, will only be briefly described.

Les figures 1a et 1b représentent une vue de dessous des principaux éléments d'un système 1 de remise à zéro d'un chronographe dans une position avant l'opération de remise à zéro. Il est normalement composé aussi d'un rouage de comptage chronographe 2 présenté plus en détails aux figures 4 et 5 décrites ci-après. Il peut être envisagé de monter le système 1 de remise à zéro dans une pièce d'horlogerie comprenant un mouvement de base horaire et un mouvement chronographe, qui peut être autonome avec son propre mouvement, et donc son propre barillet. Cependant, il peut aussi être prévu d'utiliser le mouvement de base de la pièce d'horlogerie avec le chronographe.The figures 1a and 1b show a bottom view of the main elements of a system 1 for resetting a chronograph in a position before the resetting operation. It is normally also made up of a chronograph 2 counting train, which is presented in more detail in the figures 4 and 5 described below. It can be envisaged to mount the reset system 1 in a timepiece comprising a basic time movement and a chronograph movement, which can be autonomous with its own movement, and therefore its own barrel. However, provision can also be made for using the basic movement of the timepiece with the chronograph.

Le système 1 de remise à zéro comprend un mobile chrono 3, qui est normalement le mobile des secondes, qui fait partie du rouage de comptage chronographe 2 des figures 4 et 5. Ce rouage de comptage chronographe comprend notamment un compteur de minutes, qui comprend un mobile des minutes 4, et un compteur de secondes, qui comprend un mobile chrono 3. Le rouage de comptage chronographe peut encore comprendre un compteur d'heures, qui comprend un mobile des heures 5. Le mobile chrono ou des secondes 3 comporte un cœur 13 monté sur l'axe central 23 du mobile chrono, ce cœur 13 constitue une forme de came. Le mobile des minutes 4 comporte un cœur 14 monté sur l'axe central 24. Finalement, le module des heures 5 comporte un cœur 15 monté sur l'axe central 25.The zero-reset system 1 comprises a chronograph mobile 3, which is normally the seconds mobile, which is part of the chronograph counting train 2 of the figures 4 and 5 . This chronograph counting train comprises in particular a minute counter, which comprises a minute mobile 4, and a seconds counter, which comprises a chronograph mobile 3. The chronograph counting train may also include an hour counter, which comprises an hour counter. mobile hours 5. The mobile chrono or seconds 3 comprises a heart 13 mounted on the central axis 23 of the mobile chrono, this heart 13 constitutes a cam shape. The minutes mobile 4 comprises a heart 14 mounted on the central axis 24. Finally, the hours module 5 comprises a heart 15 mounted on the central axis 25.

Il est à noter qu'une pièce d'horlogerie dotée d'un chronographe comprend habituellement des mobiles de chronographe, qui sont montés pivotant à friction sur un bâti ou une platine de la pièce d'horlogerie. Cela signifie que lors de la remise à zéro du chronographe, il est possible de tourner avec un couple suffisant les mobiles maintenus seulement par friction par leur axe dans une ouverture prévue à cet effet, jusqu'à l'indication de remise à zéro du chronographe.It should be noted that a timepiece provided with a chronograph usually comprises chronograph mobiles, which are mounted to pivot in friction on a frame or a plate of the timepiece. This means that when resetting the chronograph, it is possible to turn with sufficient torque the moving parts held only by friction by their axis in an opening provided for this purpose, until the chronograph reset indication.

Le système 1 de remise à zéro comprend principalement un élément flexible 10, qui peut être un ressort embarqué, qui est relié entre un moyen de commande 12 de remise à zéro et une partie d'extrémité du marteau 6, qui est utilisé pour la remise à zéro du chronographe. L'élément flexible 10 est configuré de telle manière à emmagasiner de l'énergie lors d'un déplacement du moyen de commande 12 et avant le déblocage du marteau 6 bloqué par un moyen de blocage 11 pour être en mesure au moment du déblocage du marteau 6 de restituer cette énergie emmagasinée et entraîner le marteau 6 pour la remise à zéro du chronographe.The reset system 1 mainly comprises a flexible element 10, which may be an on-board spring, which is connected between a reset control means 12 and an end part of the hammer 6, which is used for the reset. to zero of the chronograph. The flexible element 10 is configured in such a way as to store energy during a movement of the control means 12 and before the release of the hammer 6 blocked by a locking means 11 to be able at the time of the release of the hammer 6 to restore this stored energy and drive the hammer 6 to reset the chronograph.

Principalement, l'élément flexible 10 est lié par une première extrémité 10a au marteau 6 par exemple à une partie d'extrémité du marteau 6 utilisé pour la remise à zéro du chronographe. Une goupille 19 est insérée à la première extrémité 10a de l'élément flexible 10 et est logée dans une ouverture allongée 9 pratiquée à une extrémité supérieure plane du marteau 6. La seconde extrémité 10b de l'élément flexible 10 est fixée au moyen de commande 12, qui est monté sur la base ou le bâti ou la platine de la pièce d'horlogerie, et est utilisé lors de l'opération de remise à zéro du chronographe. L'élément flexible 10, tel que le ressort embarqué, est de forme arquée entre sa première extrémité 10a et sa seconde extrémité 10b. Cette forme arquée en direction d'un organe externe d'activation B, tel qu'un bouton-poussoir, pouvant agir sur le moyen de commande 12, peut être adaptée pour améliorer l'énergie emmagasinée avant la remise à zéro du chronographe.Mainly, the flexible element 10 is linked by a first end 10a to the hammer 6, for example to an end part of the hammer 6 used for resetting the chronograph. A pin 19 is inserted at the first end 10a of the flexible element 10 and is accommodated in an elongated opening 9 made at a planar upper end of the hammer 6. The second end 10b of the flexible element 10 is fixed to the control means. 12, which is mounted on the base or the frame or the plate of the timepiece, and is used during the operation of resetting the chronograph. The flexible element 10, such as the on-board spring, is of arcuate shape between its first end 10a and its second end 10b. This arcuate shape in the direction of an external activation member B, such as a push-button, which can act on the control means 12, can be adapted to improve the energy stored before resetting the chronograph.

Le moyen de commande 12 est de préférence une bascule de commande par exemple plane, qui est montée rotative de préférence par un élément de fixation 22, qui est plutôt une vis 22 passant par une ouverture centrale de la bascule de commande et qui est vissée fixement dans un taraudage correspondant dans la base ou le bâti ou la platine de la pièce d'horlogerie. Cette bascule de commande 12, qui est montée rotative autour de l'axe défini par la vis 22, comprend une première portion d'un premier côté de l'axe, sur laquelle est fixée par des goujons 40 ou autres moyens de fixation, la seconde extrémité 10b de l'élément flexible 10. La bascule de commande 12 comprend encore une seconde portion d'un second côté de l'axe de rotation opposé au premier côté, et à une extrémité de laquelle peut agir un bouton-poussoir B pour la remise à zéro du chronographe. Comme expliqué par la suite selon l'invention, dans une position de blocage, le marteau 6 est maintenu bloqué par un moyen de blocage 11. Juste avant la remise à zéro du chronographe, le bouton-poussoir B presse la seconde portion de la bascule de commande 12 rotative et de ce fait, agit tout d'abord sur l'élément flexible depuis sa seconde extrémité 10b pour effectuer une accumulation d'énergie avant le déblocage effectif du marteau 6, qui intervient en pressant encore plus loin le bouton-poussoir B.The control means 12 is preferably a control lever, for example planar, which is rotatably mounted preferably by a fixing element 22, which is rather a screw 22 passing through a central opening of the control lever and which is fixedly screwed on. in a corresponding thread in the base or the frame or the plate of the part clockwork. This control lever 12, which is rotatably mounted around the axis defined by the screw 22, comprises a first portion of a first side of the axis, to which is fixed by studs 40 or other fixing means, the second end 10b of the flexible element 10. The control lever 12 further comprises a second portion of a second side of the axis of rotation opposite to the first side, and at one end of which a push-button B can act for resetting the chronograph. As explained below according to the invention, in a blocked position, the hammer 6 is kept blocked by a blocking means 11. Just before resetting the chronograph to zero, the push-button B presses the second portion of the lever. rotary control 12 and therefore acts first of all on the flexible element from its second end 10b to effect an accumulation of energy before the effective release of the hammer 6, which occurs by pressing the push-button even further B.

Le marteau 6 est de préférence une plaque métallique, et est monté en translation avec une première ouverture longitudinale 7 et une seconde ouverture longitudinale 8 dans lesquelles sont placées des tiges fixes 17, 18, qui sont par exemple une première vis 17 et une seconde vis 18. Ces deux vis 17, 18 peuvent être vissées dans des taraudages prévus à cet effet sur une base ou bâti ou platine de la pièce d'horlogerie non représenté, mais en laissant le marteau libre de mouvement entre une position inactive de blocage et une position active de remise à zéro. Les deux ouvertures longitudinales 7, 8 sont de préférence de même longueur et sur une même ligne sur la longueur du marteau 6. La longueur des ouvertures longitudinales est adaptée de telle manière que le marteau 6 peut occuper une position inactive de blocage et une position active de remise à zéro du chronographe en contact des différents cœurs 13, 14 des mobiles 3, 4 voire aussi du cœur 15 du mobile 5 expliqués ci-après.The hammer 6 is preferably a metal plate, and is mounted in translation with a first longitudinal opening 7 and a second longitudinal opening 8 in which are placed fixed rods 17, 18, which are for example a first screw 17 and a second screw 18. These two screws 17, 18 can be screwed into the threads provided for this purpose on a base or frame or plate of the timepiece not shown, but leaving the hammer free to move between an inactive locking position and a active reset position. The two longitudinal openings 7, 8 are preferably of the same length and on the same line over the length of the hammer 6. The length of the longitudinal openings is adapted such that the hammer 6 can occupy an inactive locking position and an active position. of resetting the chronograph in contact with the various hearts 13, 14 of the mobiles 3, 4 or also of the heart 15 of the mobile 5 explained below.

Le moyen de blocage 11 du marteau 6 est de préférence un organe à crochet 11 monté rotatif sur le marteau 6. L'organe à crochet 11 de forme plane comprend une ouverture centrale à travers laquelle passe la seconde vis 18, dont le taraudage est dans la seconde ouverture longitudinale 8 du marteau 6 défini comme le côté supérieur du marteau 6, où agit le bouton-poussoir B. L'organe à crochet 11 comprend à une première extrémité 11a, un crochet pour venir s'accrocher sur une goupille 26 fixée verticalement sur le marteau 6 à proximité de la seconde ouverture longitudinale 8 et entre les deux ouvertures longitudinales 7, 8 du marteau 6. La seconde extrémité 11b de l'organe à crochet 11, qui est située d'un côté opposé par rapport à l'axe de rotation de la seconde vis 18, comprend une tige 21 par laquelle une première extrémité libre d'un ressort de rappel 31 de l'organe à crochet 11 peut agir pour ramener l'organe à crochet 11 dans une position de blocage du marteau 6. Une seconde extrémité du ressort de rappel 31 peut être fixée par une vis 51 vissée dans un taraudage correspondant pratiqué dans la base ou le bâti ou la platine de la pièce d'horlogerie.The locking means 11 of the hammer 6 is preferably a hook member 11 rotatably mounted on the hammer 6. The hook member 11 of planar shape comprises a central opening through which passes the second. screw 18, the tapping of which is in the second longitudinal opening 8 of the hammer 6 defined as the upper side of the hammer 6, where the push-button B acts. The hook member 11 comprises at a first end 11a, a hook for coming hang on a pin 26 fixed vertically on the hammer 6 near the second longitudinal opening 8 and between the two longitudinal openings 7, 8 of the hammer 6. The second end 11b of the hook member 11, which is located d 'an opposite side with respect to the axis of rotation of the second screw 18, comprises a rod 21 by which a first free end of a return spring 31 of the hook member 11 can act to return the member to hook 11 in a locking position of the hammer 6. A second end of the return spring 31 can be fixed by a screw 51 screwed into a corresponding thread made in the base or the frame or the plate of the timepiece.

Pour une opération de remise à zéro du chronographe, une extrémité intérieure 12' de la seconde portion de la bascule de commande 12 rotative est disposée en regard et distante de la seconde extrémité 11b de l'organe à crochet 11. Quand le bouton-poussoir B est pressé pour une opération de remise à zéro du chronographe, l'élément flexible 10 emmagasine tout d'abord de l'énergie par la rotation de la bascule de commande 12 suite à la pression sur le bouton-poussoir B. L'élément flexible 10 emmagasine de l'énergie déjà avant que l'extrémité intérieure 12' de la seconde portion de la bascule de commande 12 vienne pousser la seconde extrémité 11b de l'organe à crochet 11, et ceci jusqu'au moment où le crochet de la première extrémité 11a de l'organe à crochet 11 n'accroche plus la goupille 26 du marteau 6, ce qui permet d'avoir un déclenchement franc sans frottement supplémentaire. Dans cet état, le marteau 6 n'est plus dans une position bloquée et peut agir plus facilement pour la remise à zéro du chronographe grâce tout d'abord à la restitution de l'énergie emmagasinée par l'élément flexible 10 et subséquemment par la pression du bouton-poussoir B d'un utilisateur.For a chronograph reset operation, an inner end 12 'of the second portion of the rotary control lever 12 is disposed opposite and distant from the second end 11b of the hook member 11. When the push-button B is pressed for a chronograph reset operation, the flexible element 10 first of all stores energy by the rotation of the control rocker 12 following the pressure on the push-button B. The element hose 10 stores energy already before the inner end 12 'of the second portion of the control lever 12 pushes the second end 11b of the hook member 11, and this until the moment when the hook of the first end 11a of the hook member 11 no longer catches the pin 26 of the hammer 6, which makes it possible to have a clear release without additional friction. In this state, the hammer 6 is no longer in a blocked position and can act more easily for resetting the chronograph firstly thanks to the return of the energy stored by the flexible element 10 and subsequently by the press of push button B of a user.

Grâce à cette énergie accumulée par l'élément flexible 10 juste avant le déblocage du marteau 6, l'opération de remise à zéro du chronographe est facilitée. Le marteau 6 est poussé par l'élément flexible 10 depuis sa première extrémité 10a et en direction des différents mobiles 3, 4, 5 notamment des cœurs 13, 14, 15 de mobiles. Pour ce faire et dans le cas des trois mobiles à disposition, le marteau 6 comprend trois portions de contact 16a, 16b, 16c. Une première portion de contact 16a disposée sur le marteau 6 vient en contact du cœur 13 du mobile chrono 3. Une seconde portion de contact 16b disposée sur le marteau 6 vient en contact du cœur 15 du mobile des heures 5. La première portion de contact 16a et la seconde portion de contact 16b forment un ensemble monté rotatif autour d'un axe 37 sur le marteau 6 à proximité de la première ouverture longitudinale 17. Une butée angulaire 36 est prévue entre la première portion de contact 16a et la seconde portion de contact 16b. Cette butée 36 passe avec un certain jeu dans une ouverture centrale de l'ensemble, ce qui permet de compenser les défauts géométriques des composants. Finalement, une troisième portion de contact 16c disposée sur le marteau 6 à proximité de la première extrémité 10a de l'élément flexible 10, vient en contact du cœur 14 du mobile des minutes 4. Cette troisième portion de contact 16c est reliée par une bande métallique en forme de U, et son extrémité opposée à la portion de contact est fixée par des goujons 43 ou autres moyens de fixation à l'extrémité supérieure du marteau 6. Un excentrique de réglage 44 est fixé dans un trou correspondant à l'extrémité supérieure du marteau 6 pour régler la position de la troisième portion de contact 16c.Thanks to this energy accumulated by the flexible element 10 just before the release of the hammer 6, the operation of resetting the chronograph is facilitated. The hammer 6 is pushed by the flexible element 10 from its first end 10a and in the direction of the various mobiles 3, 4, 5, in particular the hearts 13, 14, 15 of the mobiles. To do this and in the case of the three mobiles available, the hammer 6 comprises three contact portions 16a, 16b, 16c. A first contact portion 16a arranged on the hammer 6 comes into contact with the heart 13 of the chronograph mobile 3. A second contact portion 16b arranged on the hammer 6 comes into contact with the heart 15 of the hours mobile 5. The first contact portion 16a and the second contact portion 16b form an assembly mounted to rotate about an axis 37 on the hammer 6 near the first longitudinal opening 17. An angular stop 36 is provided between the first contact portion 16a and the second portion of contact 16b. This stop 36 passes with a certain clearance in a central opening of the assembly, which makes it possible to compensate for the geometric defects of the components. Finally, a third contact portion 16c arranged on the hammer 6 near the first end 10a of the flexible element 10 comes into contact with the heart 14 of the minute mobile 4. This third contact portion 16c is connected by a band. U-shaped metal, and its end opposite the contact portion is fixed by studs 43 or other fastening means to the upper end of the hammer 6. An adjusting eccentric 44 is fixed in a corresponding hole at the end upper hammer 6 to adjust the position of the third contact portion 16c.

La position de ces trois mobiles 3, 4, 5 et des portions de contact 16a, 16b, 16c au terme de la remise à zéro du chronographe, sont montrées explicitement aux figures 3a et 3b, qui ne seront pas plus en détails décrites comme elles comprennent de mêmes éléments décrits ci-dessus aux figures 1a et 1b. Chaque plat des cœurs 13, 14, 15 sont maintenus dans une position à zéro par chaque portion respective de contact 16a, 16b, 16c. Les vis ou autres tiges 17 et 18, qui sont dans chaque ouverture longitudinale 7 et 8, sont à une extrémité haute des ouvertures longitudinales 7 et 8 lors de la remise à zéro et avant un placement dans une position inactive de blocage du marteau 6 une fois que le bouton-poussoir B est relâché. La longueur de chaque ouverture longitudinale 7 et 8 est déterminée de telle manière que chaque vis 17 et 18 puisse se déplacer d'une position inactive lors du blocage du marteau 6 et une position active de remise à zéro.The position of these three mobiles 3, 4, 5 and of the contact portions 16a, 16b, 16c at the end of the resetting of the chronograph, are shown explicitly to the figures 3a and 3b , which will not be described in more detail as they include the same elements described above in figures 1a and 1b . Each dish of hearts 13, 14, 15 are held in a zero position by each respective portion of contact 16a, 16b, 16c. The screws or other rods 17 and 18, which are in each longitudinal opening 7 and 8, are at a high end of the longitudinal openings 7 and 8 when resetting and before being placed in an inactive locking position of the hammer 6 a after pushbutton B is released. The length of each longitudinal opening 7 and 8 is determined such that each screw 17 and 18 can move from an inactive position when locking hammer 6 and an active reset position.

A titre purement illustratif, une aiguille des minutes 34 doit être connectée à friction sur l'axe 24 pour indiquer les minutes du chronographe sur un cadran non représenté de la pièce d'horlogerie. Une aiguille des heures 35 doit être connectée à friction sur l'axe 25 pour indiquer les heures du chronographe sur le cadran non représenté de la pièce d'horlogerie. Il peut en être de même pour l'indication des secondes du chronographe, mais aucune aiguille n'est représentée.For purely illustrative purposes, a minute hand 34 must be frictionally connected to the axis 24 to indicate the chronograph minutes on a dial, not shown, of the timepiece. An hour hand 35 must be frictionally connected to the axis 25 to indicate the hours of the chronograph on the not shown dial of the timepiece. The same may apply to the chronograph seconds indication, but no hand is shown.

De manière à remettre l'élément flexible 10 dans sa position initiale une fois que le bouton-poussoir B est relâché, il peut être prévu d'avoir un autre ressort de rappel 32 dont une extrémité libre 32a vient en contact dans un logement 41 réalisé dans la première portion de la bascule de commande 12 rotative sous la seconde extrémité 10b de l'élément flexible 10. L'autre extrémité 32b du ressort de rappel 32 est fixée au moyen d'une vis 42, qui est vissée dans un taraudage correspondant réalisé dans la base ou le bâti ou la platine de la pièce d'horlogerie. Une fois que l'élément flexible 10 et le bouton-poussoir B sont dans une position initiale, le ressort de rappel 31 pousse l'organe à crochet 11 dans sa position de blocage du marteau de manière conventionnelle avant une prochaine opération de remise à zéro du chronographe.In order to return the flexible element 10 to its initial position once the push-button B is released, it can be provided to have another return spring 32, a free end 32a of which comes into contact in a housing 41 made. in the first portion of the rotary control lever 12 under the second end 10b of the flexible element 10. The other end 32b of the return spring 32 is fixed by means of a screw 42, which is screwed into a corresponding thread produced in the base or the frame or the mainplate of the timepiece. Once the flexible element 10 and the push button B are in an initial position, the return spring 31 pushes the hook member 11 into its hammer locking position in a conventional manner before a next reset operation. of the chronograph.

La figure 2, qui ne montre que la vue de dessous du système de remise à zéro du chronographe, permet juste de se rendre compte de manière illustrative de l'énergie emmagasinée par l'élément flexible 10 juste avant le déblocage du marteau 6 quand le crochet à la première extrémité 11a de l'organe à crochet 11 le libère du blocage. Par la rotation de la bascule de commande 12, la seconde extrémité 10b de l'élément flexible 10 a tendance à tourner dans le sens des aiguilles d'une montre redressant l'élément flexible 10 et ainsi emmagasinant de l'énergie à restituer lors de la remise à zéro du chronographe. Bien entendu tous les autres composants de la figure 2 ne seront pas répétés étant donné qu'ils ont déjà été expliqués en référence aux figures 1a et 1b.The figure 2 , which only shows the bottom view of the chronograph reset system, just illustrates in an illustrative manner the energy stored by the flexible element 10 just before the release of the hammer 6 when the hook at the first end 11a of the hook member 11 releases it from the locking. By the rotation of the control rocker 12, the second end 10b of the flexible element 10 tends to rotate clockwise, straightening the flexible element 10 and thus storing energy to be restored during resetting the chronograph. Of course all the other components of the figure 2 will not be repeated since they have already been explained with reference to the figures 1a and 1b .

Les figures 4 et 5 suivantes représentent un rouage de comptage chronographe 2, qui comprend d'une part un rouage des minutes à la figure 4 et d'autre part un rouage des heures à la figure 5. Les différentes roues pour le rouage des minutes et le rouage des heures sont montrées reliées par des traits interrompus. Dans le cas principalement du rouage des minutes, qui est montré à la figure 4, une première roue dentée 62 disposée sur l'axe 23 du mobile chrono 3 engrène avec une roue intermédiaire 63, dont le diamètre est plus grand que le diamètre de la première roue dentée 62. Une seconde roue intermédiaire 64 de plus petit diamètre est placée sur la roue intermédiaire 63 pour entraîner une roue du rouage des heures expliquées ci-après. Une troisième roue intermédiaire proximale 65 coaxiale et de plus petit diamètre que la roue intermédiaire 63 permet d'entraîner une grande roue 66 montée sur l'axe 24 du mobile des minutes 4. La dimension de chaque roue est bien entendu déterminée en fonction du temps compté et à afficher pour passer de la seconde avec un premier organe indicateur à la minute avec un second organe indicateur, tel qu'une aiguille 34 sur un cadran non représenté.The figures 4 and 5 following shows a chronograph counting train 2, which comprises on the one hand a minute train at the figure 4 and on the other hand a cog of hours at the figure 5 . The different wheels for the minute wheel and the hour wheel are shown connected by dotted lines. In the case mainly of the minute wheel, which is shown in figure 4 , a first toothed wheel 62 disposed on the axis 23 of the chronograph mobile 3 meshes with an intermediate wheel 63, the diameter of which is greater than the diameter of the first toothed wheel 62. A second intermediate wheel 64 of smaller diameter is placed on the intermediate wheel 63 to drive a wheel of the hour train explained below. A third coaxial proximal intermediate wheel 65 and of smaller diameter than the intermediate wheel 63 makes it possible to drive a large wheel 66 mounted on the axis 24 of the minute mobile 4. The size of each wheel is of course determined as a function of time. counted and displayed to go from the second with a first indicator member to the minute with a second indicator member, such as a hand 34 on a dial, not shown.

La figure 5 représente principalement le rouage des heures. La première roue dentée 62 disposée sur l'axe 23 du mobile chrono 3 engrène avec la roue intermédiaire 63, dont le diamètre est plus grand que le diamètre de la première roue dentée 62. La seconde roue intermédiaire 64 de plus petit diamètre engrène avec une seconde roue intermédiaire 68 de plus grand diamètre qui elle-même comprend en dessous une autre petite roue intermédiaire qui est destinée à entraîner une autre grande roue 67, dont une roue proximale de plus petit diamètre sur le même axe entraîne une roue des heures 69. La dimension de chaque roue est bien entendu déterminée en fonction du temps compté et à afficher pour passer de la seconde avec un premier organe indicateur à l'heure avec un troisième organe indicateur, tel qu'une aiguille 35 sur un cadran non représenté.The figure 5 mainly represents the cog of the hours. The first toothed wheel 62 disposed on the axis 23 of the chronograph mobile 3 meshes with the intermediate wheel 63, the diameter of which is greater than the diameter of the first toothed wheel 62. The second intermediate wheel 64 of smaller diameter meshes with a second intermediate wheel 68 of larger diameter which itself comprises another small below intermediate wheel which is intended to drive another large wheel 67, of which a proximal wheel of smaller diameter on the same axis drives an hour wheel 69. The size of each wheel is of course determined as a function of the time counted and to be displayed for go from the second with a first indicator member to the time with a third indicator member, such as a hand 35 on a dial, not shown.

On peut encore remarquer sur les figures 4 et 5, les aiguilles d'indication des minutes 34 et des heures 35 non directement connectées à leur axe respectif des mobiles 4 et 5. Les cœurs 14 et 15 des mobiles des minutes et les heures 4 et 5 sont disposés chacun sous les roues 66 et 69. Aussi bien le rouage des minutes que le rouage des heures est bien connu dans ce domaine technique d'une pièce d'horlogerie à chronographe. Aucun autre détail ne sera expliqué plus précisément.We can still notice on the figures 4 and 5 , the minute 34 and hour 35 indicator hands not directly connected to their respective axes of the mobiles 4 and 5. The cores 14 and 15 of the minute mobiles and the hours 4 and 5 are each arranged under the wheels 66 and 69 Both the minute train and the hour train are well known in this technical field of a chronograph timepiece. No other details will be explained more precisely.

A partir de la description qui vient d'être faite, de multiples variantes de réalisation du système de remise à zéro pour la remise à zéro dans chronographe être conçues par l'homme du métier sans sortir du cadre de l'invention définie par les revendications. Il peut être prévu un ou plusieurs éléments flexibles de forme identique ou différente, et disposés entre une extrémité du marteau et la bascule de commande. De plus, il peut être envisagé d'avoir un ou plusieurs marteaux rotatifs et non à mouvement linéaire pour la remise à zéro du chronographe.From the description which has just been given, multiple variant embodiments of the reset system for resetting to zero in a chronograph can be designed by those skilled in the art without departing from the scope of the invention defined by the claims. . One or more flexible elements of identical or different shape may be provided, and arranged between one end of the hammer and the control lever. In addition, it can be envisaged to have one or more rotary hammers and not with linear movement for resetting the chronograph.

Claims (14)

Système (1) de remise à zéro d'un chronographe, qui est muni d'un rouage de comptage chronographe (2), qui comprend au moins un compteur de minutes ayant un mobile des minutes (4), et un compteur de secondes, qui comprend un mobile chrono (3), le mobile des minutes (4) comportant un cœur (14), constituant une forme de came, monté sur un axe central (24) du mobile des minutes et le mobile chrono (3) comportant un cœur (13) monté sur un axe central (23) du mobile chrono, le système (1) comprenant un marteau (6) maintenu bloqué par un moyen de blocage (11) et déplaçable depuis une position inactive, où le marteau (6) est bloqué par le moyen de blocage (11), et une position active, quand le marteau (6) est débloqué, pour la remise à zéro du chronographe en contact des différents cœurs des mobiles (3, 4),
caractérisé en ce que le système (1) comprend un élément flexible (10) relié entre un moyen de commande (12) de remise à zéro et le marteau (6) utilisé pour la remise à zéro du chronographe, et est configuré de telle manière à emmagasiner de l'énergie lors d'un déplacement du moyen de commande (12) avant le déblocage du marteau (6) par le moyen de blocage (11) pour être en mesure au moment du déblocage du marteau (6) de restituer cette énergie emmagasinée et entraîner le marteau (6) pour la remise à zéro du chronographe.System (1) for resetting a chronograph, which is provided with a chronograph counting gear train (2), which comprises at least one minute counter having a minute mobile (4), and a seconds counter, which comprises a chronograph mobile (3), the minutes mobile (4) comprising a heart (14), constituting a cam shape, mounted on a central axis (24) of the minute mobile and the chronograph mobile (3) comprising a heart (13) mounted on a central axis (23) of the chronograph mobile, the system (1) comprising a hammer (6) held blocked by a blocking means (11) and movable from an inactive position, where the hammer (6) is blocked by the blocking means (11), and an active position, when the hammer (6) is released, for resetting the chronograph in contact with the various hearts of the mobiles (3, 4),
characterized in that the system (1) comprises a flexible element (10) connected between a reset control means (12) and the hammer (6) used for resetting the chronograph, and is configured in such a way to store energy during a movement of the control means (12) before the release of the hammer (6) by the locking means (11) to be able at the time of release of the hammer (6) to restore this stored energy and drive the hammer (6) to reset the chronograph. Système (1) selon la revendication 1, caractérisé en ce que l'élément flexible (10) est lié par une première extrémité (10a) au marteau (6), qui est utilisé pour la remise à zéro du chronographe, et en ce qu'une seconde extrémité (10b) de l'élément flexible (10) est fixée au moyen de commande (12) qui est monté sur une base ou un bâti ou une platine d'une pièce d'horlogerie.System (1) according to claim 1, characterized in that the flexible element (10) is connected by a first end (10a) to the hammer (6), which is used for resetting the chronograph, and in that a second end (10b) of the flexible element (10) is fixed to the control means (12) which is mounted on a base or a frame or a plate of a timepiece. Système (1) selon la revendication 2, caractérisé en ce que la première extrémité (10a) de l'élément flexible (10) est reliée au moyen d'une tige ou d'une goupille (19) insérée dans une ouverture allongée (9) pratiquée à une extrémité supérieure plane du marteau (6).System (1) according to claim 2, characterized in that the first end (10a) of the flexible element (10) is connected to the means a rod or a pin (19) inserted in an elongated opening (9) made at a flat upper end of the hammer (6). Système (1) selon la revendication 2, caractérisé en ce que l'élément flexible est de forme arquée entre sa première extrémité (10a) et sa seconde extrémité (10b), cette forme arquée étant en direction d'un organe externe d'activation (B) du moyen de commande (12).System (1) according to Claim 2, characterized in that the flexible element is of arcuate shape between its first end (10a) and its second end (10b), this arcuate shape being in the direction of an external activation member (B) of the control means (12). Système (1) selon l'une des revendications 1 à 4, caractérisé en ce que le moyen de commande (12) est une bascule de commande (12), qui est montée rotative par un élément de fixation (22) passant par une ouverture centrale de la bascule de commande (12) et qui est fixé dans la base ou le bâti ou la platine de la pièce d'horlogerie.System (1) according to one of claims 1 to 4, characterized in that the control means (12) is a control rocker (12) which is rotatably mounted by a fixing element (22) passing through an opening central control lever (12) and which is fixed in the base or the frame or the plate of the timepiece. Système (1) selon la revendication 5, caractérisé en ce que la bascule de commande (12) de forme plane est montée rotative par une vis (22) passant par l'ouverture centrale de la bascule de commande (12) et qui est vissée fixement dans un taraudage correspondant dans la base ou le bâti ou la platine de la pièce d'horlogerie.System (1) according to claim 5, characterized in that the planar control lever (12) is rotatably mounted by a screw (22) passing through the central opening of the control lever (12) and which is screwed on. fixed in a corresponding thread in the base or the frame or the plate of the timepiece. Système (1) selon la revendication 6, caractérisé en ce que la bascule de commande (12) comprend une première portion d'un premier côté de l'axe (22) sur laquelle est fixée par des moyens de fixation (40), tels que des goujons (40), la seconde extrémité (10b) de l'élément flexible (10), et en ce que la bascule de commande (12) comprend une seconde portion d'un second côté de l'axe opposé au premier côté, et à une extrémité de laquelle peut agir l'organe externe d'activation, qui est un bouton-poussoir (B).System (1) according to Claim 6, characterized in that the control rocker (12) comprises a first portion of a first side of the axis (22) on which is fixed by fixing means (40), such as studs (40), the second end (10b) of the flexible element (10), and in that the control lever (12) comprises a second portion of a second side of the axis opposite to the first side , and at one end of which the external activation member, which is a push-button (B), can act. Système (1) selon la revendication 1, caractérisé en ce que le marteau (6) est monté en translation avec une première ouverture longitudinale (7) et une seconde ouverture longitudinale (8) dans lesquelles sont placées des tiges fixes, qui sont par exemple une première vis (17) dans la première ouverture longitudinale (7) du marteau (6) et une seconde vis (18) dans la seconde ouverture longitudinale (8) du marteau (6), le marteau se déplaçant d'une manière rectiligne de la position inactive à la position active de remise à zéro, les deux vis (17, 18) étant vissées dans des taraudages prévus à cet effet sur une base ou un bâti ou une platine de la pièce d'horlogerie.System (1) according to Claim 1, characterized in that the hammer (6) is mounted in translation with a first longitudinal opening (7) and a second longitudinal opening (8) in which are placed fixed rods, which are for example a first screw (17) in the first longitudinal opening (7) of the hammer (6) and a second screw (18) in the second longitudinal opening (8) of the hammer (6), the hammer moving in a rectilinear manner from the inactive position to the active reset position, the two screws (17, 18) being screwed in in threads provided for this purpose on a base or a frame or a plate of the timepiece. Système (1) selon la revendication 8, caractérisé en ce que le moyen de blocage (11) comprend un organe à crochet (11) monté rotatif sur le marteau (6), la seconde vis (18) de guidage du marteau (6) passant à travers une ouverture centrale de l'organe à crochet (11) et du côté supérieur du marteau (6) en direction du moyen de commande (12), en ce que l'organe à crochet (11) comprend une première extrémité (11a) avec un crochet pour venir s'accrocher sur une goupille (26) fixée verticalement sur le marteau (6) à proximité de la seconde ouverture longitudinale (8) et entre les deux ouvertures longitudinales (7, 8), et en ce que l'organe à crochet (11) comprend une seconde extrémité (11b) d'un côté opposé à la première extrémité par rapport à l'axe de rotation (18), une tige (21) étant montée traversante à la seconde extrémité (11b) et étant disposée pour être poussée par une partie du moyen de commande (12) dans une opération de remise à zéro.System (1) according to Claim 8, characterized in that the locking means (11) comprises a hook member (11) rotatably mounted on the hammer (6), the second screw (18) for guiding the hammer (6) passing through a central opening of the hook member (11) and the upper side of the hammer (6) towards the control means (12), in that the hook member (11) has a first end ( 11a) with a hook to hook onto a pin (26) fixed vertically on the hammer (6) near the second longitudinal opening (8) and between the two longitudinal openings (7, 8), and in that the hook member (11) comprises a second end (11b) on a side opposite the first end with respect to the axis of rotation (18), a rod (21) being mounted through the second end (11b) ) and being arranged to be pushed by part of the control means (12) in a reset operation. Système (1) selon la revendication 9, caractérisé en ce que le moyen de commande (12) est une bascule de commande (12) montée rotative par une vis (22) passant par l'ouverture centrale de la bascule de commande (12) et qui est vissée fixement dans un taraudage correspondant dans la base ou le bâti ou la platine de la pièce d'horlogerie, en ce que la bascule de commande comprend une première portion d'un premier côté de l'axe (22) de fixation de la seconde extrémité (10b) de l'élément flexible (10), en ce que la bascule de commande (12) comprend une seconde portion d'un second côté de l'axe opposé au premier côté, et à une extrémité de laquelle peut agir un bouton-poussoir (B) et en ce qu'une extrémité intérieure (12') de la seconde portion de la bascule de commande (12) est disposée en regard et distante de la seconde extrémité de l'organe à crochet (11) de telle manière à permettre que l'élément flexible emmagasine de l'énergie lorsque le bouton-poussoir est pressé avant que la tige (21) de la seconde extrémité (11b) de l'organe à crochet (11) soit poussée par l'extrémité intérieure (12') de la seconde portion de la bascule et jusqu'au moment où le crochet de la première extrémité (11a) n'est plus accrochée à la goupille (26) du marteau (6) pour restituer l'énergie emmagasinée pour entraîner le marteau (6) dans la remise à zéro du chronographe.System (1) according to Claim 9, characterized in that the control means (12) is a control rocker (12) rotatably mounted by a screw (22) passing through the central opening of the control rocker (12) and which is screwed fixedly into a corresponding thread in the base or the frame or the plate of the timepiece, in that the control lever comprises a first portion of a first side of the fixing pin (22) of the second end (10b) of the flexible element (10), in that the control rocker (12) comprises a second portion of a second side of the axis opposite to the first side, and at one end of which can act as a push-button (B) and in that an inner end (12 ') of the second portion of the control rocker (12) is disposed opposite and distant from the second end of the member hook (11) so as to allow the flexible member to store energy when the push button is pressed before the rod (21) of the second end (11b) of the hook member (11) is pushed by the inner end (12 ') of the second portion of the lever and until the hook of the first end (11a) is no longer hooked to the pin (26) of the hammer (6) to restore the energy stored to drive the hammer (6) in resetting the chronograph. Système (1) selon la revendication 10, le chronographe comprenant encore un compteur des heures muni d'un mobile des heures (5), un cœur du mobile des heures étant monté sur un axe central du mobile des heures, caractérisé en ce que le marteau (6) débloqué est poussé par l'élément flexible (10) depuis sa première extrémité (10a) et en direction des différents cœurs (13, 14, 15) des mobiles (3, 4, 5), en ce que le marteau (6) comprend trois portions de contact (16a, 16b, 16c), une première portion de contact (16a) disposée sur le marteau (6) venant en contact du cœur (13) du mobile chrono (3), une seconde portion de contact (16b) disposée sur le marteau (6) venant en contact du cœur (15) du mobile des heures (5), et une troisième portion de contact (16c) disposée sur le marteau (6) à proximité de la première extrémité (10a) de l'élément flexible (10) venant en contact du cœur (14) du mobile des minutes (4).System (1) according to claim 10, the chronograph further comprising an hour counter provided with an hour mobile (5), a core of the hour mobile being mounted on a central axis of the hour mobile, characterized in that the hammer (6) released is pushed by the flexible element (10) from its first end (10a) and in the direction of the different hearts (13, 14, 15) of the moving parts (3, 4, 5), in that the hammer (6) comprises three contact portions (16a, 16b, 16c), a first contact portion (16a) disposed on the hammer (6) coming into contact with the heart (13) of the chronograph mobile (3), a second portion of contact (16b) disposed on the hammer (6) coming into contact with the heart (15) of the hours mobile (5), and a third contact portion (16c) disposed on the hammer (6) near the first end ( 10a) of the flexible element (10) coming into contact with the heart (14) of the minute mobile (4). Système (1) selon la revendication 11, caractérisé en ce que la première portion de contact (16a) et la seconde portion de contact (16b) forment un ensemble monté rotatif autour d'un axe (37) sur le marteau (6) à proximité de la première ouverture longitudinale (17), et en ce qu'une butée angulaire (36) est disposée entre la première portion de contact (16a) et la seconde portion de contact (16b) en passant par une ouverture centrale de l'ensemble avec un certain jeu.System (1) according to claim 11, characterized in that the first contact portion (16a) and the second contact portion (16b) form an assembly mounted to rotate about an axis (37) on the hammer (6) to proximity to the first longitudinal opening (17), and in that an angular stop (36) is disposed between the first contact portion (16a) and the second contact portion (16b) passing through a central opening of the together with some play. Système (1) selon la revendication 11, caractérisé en ce que la troisième portion de contact (16c) est reliée par une bande métallique en forme de U et son extrémité opposée à la portion de contact (16c) est fixée par des goujons (43) à l'extrémité supérieure du marteau (6).System (1) according to Claim 11, characterized in that the third contact portion (16c) is connected by a metal strip in U-shaped and its end opposite the contact portion (16c) is fixed by studs (43) to the upper end of the hammer (6). Système (1) selon la revendication 13, caractérisé en ce qu'un excentrique de réglage (44) est fixé dans un trou correspondant à l'extrémité supérieure du marteau (6) pour régler la position de la troisième portion de contact (16c).System (1) according to claim 13, characterized in that an adjusting eccentric (44) is fixed in a hole corresponding to the upper end of the hammer (6) to adjust the position of the third contact portion (16c) .
EP20161120.9A 2020-03-05 2020-03-05 System for resetting a chronograph Active EP3876042B1 (en)

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EP20161120.9A EP3876042B1 (en) 2020-03-05 2020-03-05 System for resetting a chronograph
EP21153632.1A EP3876043B1 (en) 2020-03-05 2021-01-27 System for zero resetting of a chronograph
US17/164,170 US11687043B2 (en) 2020-03-05 2021-02-01 Chronograph reset system
JP2021025037A JP7066889B2 (en) 2020-03-05 2021-02-19 Chronograph reset system
CN202110253208.4A CN113359405B (en) 2020-03-05 2021-03-04 Timer reset system

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WO2023237697A1 (en) 2022-06-09 2023-12-14 Manufacture D'horlogerie Audemars Piguet Sa Control device for clockwork movement, and corresponding clockwork movement and timepiece
WO2023248177A1 (en) 2022-06-23 2023-12-28 Lvmh Swiss Manufactures Sa Bistable timepiece control mechanism
WO2023248178A1 (en) * 2022-06-23 2023-12-28 Lvmh Swiss Manufactures Sa Bistable timepiece control mechanism

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CN113359405A (en) 2021-09-07
EP3876043B1 (en) 2023-11-29
EP3876043A1 (en) 2021-09-08
US20210278808A1 (en) 2021-09-09
CN113359405B (en) 2022-05-31
EP3876042B1 (en) 2023-12-06
US11687043B2 (en) 2023-06-27
JP7066889B2 (en) 2022-05-13
JP2021139889A (en) 2021-09-16

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