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EP2063326A2 - Timepiece movement such as a split-seconds chronograph and timepiece equipped with such a movement - Google Patents

Timepiece movement such as a split-seconds chronograph and timepiece equipped with such a movement Download PDF

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Publication number
EP2063326A2
EP2063326A2 EP08019674A EP08019674A EP2063326A2 EP 2063326 A2 EP2063326 A2 EP 2063326A2 EP 08019674 A EP08019674 A EP 08019674A EP 08019674 A EP08019674 A EP 08019674A EP 2063326 A2 EP2063326 A2 EP 2063326A2
Authority
EP
European Patent Office
Prior art keywords
chronograph
movement
wheel
split
mobile
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08019674A
Other languages
German (de)
French (fr)
Inventor
Jean-Pierre Golay
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Franck Mueller Watchland SA
Original Assignee
Franck Mueller Watchland 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 Franck Mueller Watchland SA filed Critical Franck Mueller Watchland SA
Publication of EP2063326A2 publication Critical patent/EP2063326A2/en
Withdrawn legal-status Critical Current

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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
    • G04F7/0866—Special arrangements
    • G04F7/0876—Split-time function, e.g. rattrappante

Definitions

  • the present invention relates to a watch movement of the split-seconds chronograph type comprising a frame carrying a finishing gear train capable of being kinematically connected to a chronograph wheel.
  • the latter comprises at least one chronograph mobile having a chronograph shaft for carrying a first second display member, the movement also comprising a rattrapante mobile coaxial with the chronograph mobile and having a splitter shaft for to wear a second display member seconds.
  • the invention also relates to a timepiece provided with such a movement.
  • the chronograph wheel is conventional except for the fact that the shaft of the chronograph wheel is hollow to house the shaft of the jumper wheel which passes through it from one side to the other.
  • the catch-up wheel generally comprises a wheel arranged at the bottom of the movement, that is to say on the bridge side, and carrying a catch-up lever intended to cooperate with a core cam integral with the chronograph wheel, under the effect of the action of a split spring also carried by the wheel. This cooperation ensures the superposition of a split-second needle to a first indication hand of a unit of time, in principle the second.
  • a splitter gripper comprising at least one brake is provided for locking the split-seconds wheel by blocking its wheel, in response to an action of a user of the corresponding timepiece, and stop the split-second needle while the first indicator needle continues its course.
  • the split-flyer is pivoted in the center of the movement in a split-second bridge while the hollow shaft of the chronograph-wheel also performs a guiding function for its shaft.
  • the chronograph mobile shaft is also pivoted in a bearing integral with the movement plate.
  • the fact that the splitter shaft is pivoted in the chronograph shaft has the direct consequence of retransmitting all the forces experienced by the split-seconds mobile on the chronograph mobile, in particular the shocks due to the support.
  • the split lever on the cam in the heart of the chronograph mobile and the friction created by any imbalance of the action of the split-seconds forceps on the wheel of the second-hand mobile.
  • An object of the present invention is to overcome the aforementioned problems of the state of the art, by proposing a split-second chronograph movement in which the operation of the mobile of catch-up has the least possible influence on the operation of the chronograph mobile with which it is associated. In other words, it is to propose a construction by which the chronograph mobile is isolated to the maximum of the mobile rattrapante.
  • the split-seconds chronograph movement according to the invention is characterized by the fact that the split-seconds shaft is hollow and traversed by the chronograph shaft, the catch-up wheel being mounted in rotation with reference to the frame by the intermediate of a bearing.
  • the shaft of the chronograph mobile is free to rotate inside the shaft of the split-seconds mobile which has an improved stability with reference to those of the movements of the prior art because it is rotated directly into an element of the frame.
  • the improvement in the stability of the mobile split-seconds allows in particular to use the use of a single brake assembly more simple than in the case of clamps, without disturbing the operation of the chronograph mobile.
  • the first and second seconds display members are arranged to pivot along a first axis of rotation, the movement further comprising at least one display member for the current hours and a display member for the current running minutes. for pivoting along at least a second axis of rotation, the first axis of rotation being located at a distance from the second axis of rotation.
  • first and second seconds display members are conventionally arranged at the center of the movement, being coaxial with the display hands of the current time, makes it possible to further improve the stability of the assembly of the seconds.
  • first and second display members of the seconds are conventionally arranged at the center of the movement, being coaxial with the display hands of the current time.
  • the wheels of the chronograph mobile and the split-seconds mobile are adjacent without the interposition of an element of the frame between them.
  • the split wheel typically comprises a split lever having a contact surface intended to cooperate with the periphery of a core cam integral with the chronograph wheel.
  • the split wheel can be pivotally mounted in a ball bearing housed in a bridge mounted on the platen of the movement, on its dial side.
  • FIG. 1 is a simplified plan view, on the dial side, of a preferred embodiment of a timepiece movement according to the present invention
  • the figure 2 represents a simplified plan view, on the dial side, of a construction detail of the movement of the figure 1 in a first configuration
  • the figure 3 represents a simplified plan view similar to the view of the figure 2 the movement being visible in a second configuration
  • FIG. figure 4 represents a simplified sectional view along line IV-IV of FIG. figure 1 , a construction detail of the movement of Figures 1 to 3 in the first configuration of the figure 2 .
  • the figure 1 is a simplified plan view, on the dial side, of a preferred embodiment of a timepiece movement according to the present invention.
  • This movement comprises a finishing gear, not shown, connecting a source of mechanical energy, illustrated in the form of a barrel 1 housing a spring, a mechanical oscillator not shown.
  • the finishing gear train is adapted to rotate a carriageway 2 and a hour wheel 3 for carrying, respectively, a minute hand and an hour hand.
  • the movement also comprises a conventional winding and setting wheel 4, controlled from a time-setting rod 5.
  • this movement is equipped with a chronograph function.
  • a chronograph mobile 6 intended to carry an indication needle of the measured seconds of time, by means of its shaft 7, and a mobile of minutes 8 intended to carry an indication needle of the measured minutes of time.
  • a clutch rocker 10, carrying a clutch return 11, is provided to establish a kinematic connection between the finishing train and a wheel 12 of the chronograph mobile 6, or to interrupt it.
  • the movement comprises a rocker 13 pivoted on the plate 14 and carrying a finger 15 for driving one step the wheel 16 of the mobile minutes 8 at each complete revolution of the chronograph mobile 6.
  • the clutch and clutch of the chronograph are made by means of a control 18 having a first end 19, positioned at two o'clock and intended to cooperate with a pusher (not shown), and a second end 20, carrying a hook. acting on a column wheel 21 to rotate it one step (clockwise on the figure 1 ) in response to each user's pressure on the pusher.
  • the figure 1 represents the movement while the chronograph function is activated.
  • one end 22 of the clutch rocker 10 rests on a column of the column wheel 21, which positions the clutch return 11 in engagement with the wheel 12 of the chronograph mobile 6.
  • the end 22 of the clutch rocker falls between two columns, releasing at the same time the clutch return 11 of the wheel 12.
  • the movement of figure 1 also includes a mechanism for resetting the seconds and minutes of time counters measures.
  • This mechanism includes hammers 24 and 26 seconds and minutes, formed here in one piece for illustrative non-limiting. These hammers are pivotally mounted on the plate 14 by means of a bearing screw 27 and are integral with a spout 28 intended to cooperate with the column wheel 21.
  • the reset mechanism also comprises a reset control 30 having a first end 31 positioned at four o'clock and intended to cooperate with an additional pusher to lower the hammers 24 and 26.
  • This control 30 has a second end 32 having a notch 33 cooperating with a pin 34 secured to the hammers.
  • this notch 33 is to keep the hammers in the up position when the measurement of time is stopped by the user. Pressing the additional pusher then releases the pin 34 and lowering the hammers 24 and 26 under the action of a spring not shown.
  • the hammers then cooperate with cams in the heart (one of which is visible on the Figures 2 to 4 ) to reset the seconds and minutes counters to zero, in a conventional manner.
  • a new pressure on the first pusher has the effect of rotating the column wheel 21, a column then raises the spout 28 secured to the hammers, causing the release of the cams heart, until the pin 34 returns to position at the inside of the screen 33.
  • the movement also comprises a conventional brake 36, controlled from the column wheel 21 by means of a rocker 37, to lock the wheel 12 of the chronograph mobile during the stop phases of the measurement of 'a time.
  • the movement further comprises a split-second mechanism whose operation will be described in detail in relation to the Figures 2 to 4 .
  • This mechanism comprises a catch-up wheel having a split wheel 40 coaxial with the wheel 12 of the mobile chronograph 6 and secured to a split shaft 41 for carrying a catch-up needle (not shown).
  • the split-seconds shaft is hollow, the shaft 7 of the chronograph mobile 6 being disposed inside the hollow.
  • a jumper bridge 42 is assembled on the plate 14 of the movement, this bridge bearing a ball bearing 43 having an outer ring 44 frictionally mounted in the bridge 42 and an inner ring (reference 45 on the figure 4 ) in which the split shaft is mounted frictionally.
  • the corresponding assembly is assembled to the movement by means of a nut 46, by way of nonlimiting illustration.
  • the chronograph and split-seconds mobiles are pivoted along a first axis of rotation situated at a distance from a second axis of rotation along which the roadway and the hour wheel are mounted. swiveling (the various display elements have been shown schematically by dashed lines on the figure 1 ).
  • the mechanism also comprises a catch-up brake 48 pivotally mounted on the plate 14 of the movement and controlled by an additional column wheel 51.
  • the brake 48 comprises a spout 50 arranged at a first end for, in a first configuration, resting on a column of the additional column wheel 51 and, in a second configuration, down into the space separating two adjacent columns.
  • the brake also comprises, at its opposite end, a single contact surface 52 arranged to cooperate with the periphery of the split wheel 40 to lock it when the spout 50 does not rest on a column of the additional column wheel.
  • a single contact surface 52 arranged to cooperate with the periphery of the split wheel 40 to lock it when the spout 50 does not rest on a column of the additional column wheel.
  • a third control 53, catch-up, is provided to cooperate with a third pusher (not shown), here at nine o'clock.
  • This control comprises a hook 54 arranged to act on the additional column wheel 51 to rotate one step (counterclockwise on the figure 1 ) each time the user presses on the third push-button, and rotate the brake in one direction or the other.
  • the figures 2 and 3 represent simplified plan views, on the dial side, of a construction detail of the movement of the figure 1 , respectively in a first and a second configuration, in particular to expose the operation of the split-second mechanism.
  • the configuration of the figure 2 corresponds to that of the figure 1 that is, that the measurement of a time is in progress and that the flywheel is free to turn to superimpose the split-second hand to the chronograph hand.
  • the split wheel 40 carries a catch-up lever 56, pivotally mounted near the periphery of the wheel.
  • the retractor lever carries a cylindrical roller 57 arranged to roll on the periphery of a core cam 58 secured to the chronograph mobile 6, under the effect of the action of a split spring (visible on the figure 4 ), in known manner.
  • a split spring visible on the figure 4
  • the split-second control 53 When the split-second control 53 is actuated, the configuration of the movement becomes that of the figure 3 .
  • the additional column wheel 51 turns one step, the split brake 48 is then lowered on the split wheel 40 to block it while the chronograph mobile continues its rotation.
  • the split-second hand is stopped while the chronograph hand continues to rotate.
  • the additional column wheel 51 turns again one step, resulting in the release of the split-second wheel 40 by the brake 48.
  • the split-spring can intervene to press the roller 57 against the periphery of the core cam 58 so as to place it back in the position of the figure 2 .
  • the hands are then again superimposed.
  • the figure 4 represents a simplified sectional view along line IV-IV of FIG. figure 1 , a construction detail of the movement that has just been described in relation to the Figures 1 to 3 , in the first configuration of the figure 2 .
  • This figure makes more obvious the interactions between the elements mentioned above, in particular between the chronograph mobile 6 and rattrapante.
  • the core cam 58 is secured to the chronograph wheel 12 by means of a pin 60, in a conventional manner.
  • the split spring 61 is riveted in the split wheel 40 according to the arrangements of the prior art.
  • chronograph mobile 6 pivots, on the one hand, in a center mobile 62 of the finishing gear train by its end 63 situated inside the movement and, on the other hand, in the split-seconds shaft 41, the latter pivoting in the ball bearing 43, according to the present invention.
  • the mobile rattrapante has an increased stability compared to known mechanisms of the state of the art.
  • the advantageous construction of the movement according to the present invention proposes to arrange the chronograph wheels 12 and the adjuster wheel 40 in such a way that they are adjacent, without the interposition of a frame element between them.
  • the foregoing description attempts to describe a particular embodiment by way of non-limiting illustration and, the invention is not limited, for example, to the disposition of the chronograph wheel on the bridge side of the movement or to the use of a ball bearing to assemble the split-seconds mobile with the frame of the movement.
  • the above description relates to a catch-up associated with a chronograph mobile, intended to display the measured seconds of time, but the skilled person will not encounter any particular difficulty to implement the principles described here, according to its own needs, as for example to associate a catch-up with the counter of measured minutes of time.

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

Abstract

The fly-back chronograph type watch movement comprises a frame with a finishing gear train connected to a chronograph gear train. The chronograph gear train comprises a chronograph runner (6) having a chronograph spindle (7) to carry hand for indicating seconds of measured time. A fly-back runner mounted rotationally with respect to the frame, has a hollow-shaped fly-back spindle (41) in which the chronograph spindle is arranged to carry hand for indicating seconds of measured time.

Description

Domaine techniqueTechnical area

La présente invention concerne un mouvement horloger du type chronographe à rattrapante comportant un bâti portant un rouage de finissage susceptible d'être relié cinématiquement à un rouage de chronographe. De manière connue, ce dernier comprend au moins un mobile de chronographe présentant un arbre de chronographe destiné à porter un premier organe d'affichage des secondes, le mouvement comportant également un mobile de rattrapante coaxial au mobile de chronographe et présentant un arbre de rattrapante destiné à porter un second organe d'affichage des secondes.The present invention relates to a watch movement of the split-seconds chronograph type comprising a frame carrying a finishing gear train capable of being kinematically connected to a chronograph wheel. In known manner, the latter comprises at least one chronograph mobile having a chronograph shaft for carrying a first second display member, the movement also comprising a rattrapante mobile coaxial with the chronograph mobile and having a splitter shaft for to wear a second display member seconds.

L'invention concerne également une pièce d'horlogerie munie d'un tel mouvement.The invention also relates to a timepiece provided with such a movement.

Etat de la techniqueState of the art

De tels mouvements horlogers sont connus dans l'état de la technique. A titre d'exemple, on notera que l'ouvrage intitulé " Théorie d'horlogerie", de C.-A. Reymondin et al., édité par la Fédération des Ecoles Techniques (Suisse), ISBN 2-940025-10-X, décrit un mouvement conventionnel de ce type, aux pages 249 à 251 .Such watch movements are known in the state of the art. As an example, note that the book entitled " Theory of Clocks ", by C.-A.Reymondin et al., Published by the Federation of Technical Schools (Switzerland), ISBN 2-940025-10-X, describes a conventional movement of this type, on pages 249 to 251. .

Typiquement, dans un mouvement à rattrapante le rouage de chronographe est conventionnel hormis le fait que l'arbre du mobile de chronographe est creux pour loger l'arbre du mobile de rattrapante qui le traverse de part en part. Le mobile de rattrapante comporte généralement une roue disposée au fond du mouvement, c'est-à-dire du côté ponts, et portant un levier de rattrapante destiné à coopérer avec une came en coeur solidaire du mobile de chronographe, sous l'effet de l'action d'un ressort de rattrapante également porté par la roue. Cette coopération assure la superposition d'une aiguille de rattrapante à une première aiguille d'indication d'une unité de temps, en principe la seconde.Typically, in a split-second movement, the chronograph wheel is conventional except for the fact that the shaft of the chronograph wheel is hollow to house the shaft of the jumper wheel which passes through it from one side to the other. The catch-up wheel generally comprises a wheel arranged at the bottom of the movement, that is to say on the bridge side, and carrying a catch-up lever intended to cooperate with a core cam integral with the chronograph wheel, under the effect of the action of a split spring also carried by the wheel. This cooperation ensures the superposition of a split-second needle to a first indication hand of a unit of time, in principle the second.

Une pince de rattrapante comprenant au moins un frein est prévue pour verrouiller le mobile de rattrapante par blocage de sa roue, en réponse à une action d'un utilisateur de la pièce d'horlogerie correspondante, et stopper l'aiguille de rattrapante tandis que la première aiguille indicatrice poursuit sa course.A splitter gripper comprising at least one brake is provided for locking the split-seconds wheel by blocking its wheel, in response to an action of a user of the corresponding timepiece, and stop the split-second needle while the first indicator needle continues its course.

De manière générale, le mobile de rattrapante est pivoté, au centre du mouvement, dans un pont de rattrapante tandis que l'arbre creux du mobile de chronographe remplit également une fonction de guidage pour son arbre. L'arbre du mobile de chronographe est également pivoté dans un palier solidaire de la platine du mouvement.In general, the split-flyer is pivoted in the center of the movement in a split-second bridge while the hollow shaft of the chronograph-wheel also performs a guiding function for its shaft. The chronograph mobile shaft is also pivoted in a bearing integral with the movement plate.

Ces constructions présentent toutefois un certain nombre d'inconvénients.These constructions, however, have a number of disadvantages.

D'une part, le fait que l'arbre de rattrapante est pivoté dans l'arbre de chronographe a pour conséquence directe de retransmettre toutes les forces subies par le mobile de rattrapante sur le mobile de chronographe, notamment les chocs dus à l'appui du levier de rattrapante sur la came en coeur du mobile de chronographe et les frottements créés par un éventuel déséquilibre de l'action de la ou des pinces de rattrapante sur la roue du mobile de rattrapante.On the one hand, the fact that the splitter shaft is pivoted in the chronograph shaft has the direct consequence of retransmitting all the forces experienced by the split-seconds mobile on the chronograph mobile, in particular the shocks due to the support. the split lever on the cam in the heart of the chronograph mobile and the friction created by any imbalance of the action of the split-seconds forceps on the wheel of the second-hand mobile.

Les mouvements les plus courants mettent en oeuvre une pince formée d'une paire de freins pour verrouiller le mobile de rattrapante afin d'équilibrer autant que possible les contraintes subies par la roue de rattrapante lors des opérations de blocage et de déblocage. Ces mécanismes à pince sont cependant complexes à assembler et à ajuster avec toute la précision requise.The most common movements use a clamp formed of a pair of brakes to lock the split wheel to balance as much as possible the stresses experienced by the split wheel during blocking and unlocking operations. These clamp mechanisms are however complex to assemble and adjust with all the precision required.

D'autre part, les frottements permanents du levier de rattrapante sur la came en coeur perturbent également le mouvement du mobile de chronographe.On the other hand, the permanent friction of the split lever on the core cam also disturb the movement of the chronograph mobile.

Pour répondre à ce dernier problème, des mécanismes d'isolateur ont été proposés, comme par exemple dans le brevet CH 686 545G A3 . Toutefois, ces mécanismes ne proposent pas de solution au premier problème soulevé plus haut.In response to this latter problem, insulator mechanisms have been proposed, such as in the patent CH 686 545G A3 . However, these mechanisms do not offer a solution to the first problem raised above.

Divulgation de l'inventionDisclosure of the invention

Un but de la présente invention est de pallier aux problèmes susmentionnés de l'état de la technique, en proposant un mouvement de chronographe à rattrapante dans lequel le fonctionnement du mobile de rattrapante influence le moins possible le fonctionnement du mobile de chronographe auquel il est associé. En d'autres termes, il s'agit de proposer une construction par laquelle le mobile de chronographe est isolé au maximum du mobile de rattrapante.An object of the present invention is to overcome the aforementioned problems of the state of the art, by proposing a split-second chronograph movement in which the operation of the mobile of catch-up has the least possible influence on the operation of the chronograph mobile with which it is associated. In other words, it is to propose a construction by which the chronograph mobile is isolated to the maximum of the mobile rattrapante.

A cet effet, le mouvement de chronographe à rattrapante selon l'invention est caractérisé par le fait que l'arbre de rattrapante est creux et traversé par l'arbre de chronographe, le mobile de rattrapante étant monté en rotation en référence au bâti par l'intermédiaire d'un palier.For this purpose, the split-seconds chronograph movement according to the invention is characterized by the fact that the split-seconds shaft is hollow and traversed by the chronograph shaft, the catch-up wheel being mounted in rotation with reference to the frame by the intermediate of a bearing.

Grâce à cette construction, l'arbre du mobile de chronographe est libre de tourner à l'intérieur de l'arbre du mobile de rattrapante qui présente une stabilité améliorée en référence à ceux des mouvements de l'art antérieur du fait qu'il est pivoté directement dans un élément du bâti. L'amélioration de la stabilité du mobile de rattrapante permet notamment de recourir à l'utilisation d'un frein unique, d'assemblage plus simple que dans le cas des pinces, sans pour autant perturber le fonctionnement du mobile de chronographe.With this construction, the shaft of the chronograph mobile is free to rotate inside the shaft of the split-seconds mobile which has an improved stability with reference to those of the movements of the prior art because it is rotated directly into an element of the frame. The improvement in the stability of the mobile split-seconds allows in particular to use the use of a single brake assembly more simple than in the case of clamps, without disturbing the operation of the chronograph mobile.

De manière préférée, les premier et second organes d'affichage des secondes sont agencés pour pivoter suivant un premier axe de rotation, le mouvement comportant en outre au moins un organe d'affichage des heures courantes et un organe d'affichage des minutes courantes agencés pour pivoter suivant au moins un second axe de rotation, le premier axe de rotation étant situé à distance du second axe de rotation.Preferably, the first and second seconds display members are arranged to pivot along a first axis of rotation, the movement further comprising at least one display member for the current hours and a display member for the current running minutes. for pivoting along at least a second axis of rotation, the first axis of rotation being located at a distance from the second axis of rotation.

Une telle construction, originale puisque les premier et second organes d'affichage des secondes sont conventionnellement disposés au centre du mouvement, en étant coaxiaux aux aiguilles d'affichage de l'heure courante, permet d'améliorer encore la stabilité de l'assemblage des premier et second organes d'affichage des secondes.Such an original construction since the first and second seconds display members are conventionally arranged at the center of the movement, being coaxial with the display hands of the current time, makes it possible to further improve the stability of the assembly of the seconds. first and second display members of the seconds.

Suivant un mode de réalisation préféré, les roues du mobile de chronographe et du mobile de rattrapante sont adjacentes sans l'interposition d'un élément du bâti entre elles. La roue de rattrapante comprend typiquement un levier de rattrapante présentant une surface de contact destinée à coopérer avec la périphérie d'une came en coeur solidaire du mobile de chronographe. La caractéristique de l'invention mentionnée ci-dessus permet d'agencer le levier de rattrapante de telle manière qu'il coopère directement avec la came en coeur de remise à zéro du mobile de chronographe, au lieu de prévoir une came en coeur additionnelle comme c'est le cas dans les mouvements de l'art antérieur.According to a preferred embodiment, the wheels of the chronograph mobile and the split-seconds mobile are adjacent without the interposition of an element of the frame between them. The split wheel typically comprises a split lever having a contact surface intended to cooperate with the periphery of a core cam integral with the chronograph wheel. The characteristic of the invention mentioned above makes it possible to arrange the catch-up lever in such a way that it cooperates directly with the cam in the reset heart of the chronograph mobile, instead of providing an additional core cam as is the case in the movements of the prior art.

De manière avantageuse, le mobile de rattrapante peut être monté pivotant dans un roulement à billes logé dans un pont monté sur la platine du mouvement, de son côté cadran.Advantageously, the split wheel can be pivotally mounted in a ball bearing housed in a bridge mounted on the platen of the movement, on its dial side.

Brève description des dessinsBrief description of the drawings

D'autres caractéristiques et avantages de la présente invention apparaîtront plus clairement à la lecture de la description détaillée d'un mode de réalisation préféré qui suit, faite en référence aux dessins annexés donnés à titre d'exemples non limitatifs et dans lesquels:Other features and advantages of the present invention will appear more clearly on reading the detailed description of a preferred embodiment which follows, made with reference to the accompanying drawings given by way of non-limiting examples and in which:

- la figure 1 représente une vue en plan simplifiée, côté cadran, d'un mode de réalisation préféré d'un mouvement pour pièce d'horlogerie selon la présente invention;- the figure 1 is a simplified plan view, on the dial side, of a preferred embodiment of a timepiece movement according to the present invention;

- la figure 2 représente une vue en plan simplifiée, côté cadran, d'un détail de construction du mouvement de la figure 1, dans une première configuration;- the figure 2 represents a simplified plan view, on the dial side, of a construction detail of the movement of the figure 1 in a first configuration;

- la figure 3 représente une vue en plan simplifiée similaire à la vue de la figure 2, le mouvement étant visible dans une seconde configuration, et- the figure 3 represents a simplified plan view similar to the view of the figure 2 the movement being visible in a second configuration, and

- la figure 4 représente une vue en coupe simplifiée, selon la ligne IV-IV de la figure 1, d'un détail de construction du mouvement des figures 1 à 3 dans la première configuration de la figure 2.- the figure 4 represents a simplified sectional view along line IV-IV of FIG. figure 1 , a construction detail of the movement of Figures 1 to 3 in the first configuration of the figure 2 .

Mode(s) de réalisation de l'inventionMode (s) of realization of the invention

La figure 1 représente une vue en plan simplifiée, côté cadran, d'un mode de réalisation préféré d'un mouvement pour pièce d'horlogerie selon la présente invention.The figure 1 is a simplified plan view, on the dial side, of a preferred embodiment of a timepiece movement according to the present invention.

Ce mouvement comporte un rouage de finissage, non représenté, reliant une source d'énergie mécanique, illustrée sous la forme d'un barillet 1 logeant un ressort, à un oscillateur mécanique non représenté. Le rouage de finissage est adapté pour entraîner en rotation une chaussée 2 et une roue des heures 3 destinées à porter, respectivement, une aiguille des minutes et une aiguille des heures.This movement comprises a finishing gear, not shown, connecting a source of mechanical energy, illustrated in the form of a barrel 1 housing a spring, a mechanical oscillator not shown. The finishing gear train is adapted to rotate a carriageway 2 and a hour wheel 3 for carrying, respectively, a minute hand and an hour hand.

Le mouvement comporte également un rouage de remontage et de mise à l'heure 4 conventionnel, commandé à partir d'une tige de mise à l'heure 5.The movement also comprises a conventional winding and setting wheel 4, controlled from a time-setting rod 5.

Par ailleurs, ce mouvement est muni d'une fonction chronographe. A cet effet, il comporte notamment un mobile de chronographe 6 destiné à porter une aiguille d'indication des secondes de temps mesurés, par l'intermédiaire de son arbre 7, et un mobile des minutes 8 destiné à porter une aiguille d'indication des minutes de temps mesurés.In addition, this movement is equipped with a chronograph function. For this purpose, it comprises in particular a chronograph mobile 6 intended to carry an indication needle of the measured seconds of time, by means of its shaft 7, and a mobile of minutes 8 intended to carry an indication needle of the measured minutes of time.

Une bascule d'embrayage 10, portant un renvoi d'embrayage 11, est prévue pour établir une liaison cinématique entre le rouage de finissage et une roue 12 du mobile de chronographe 6, ou pour l'interrompre.A clutch rocker 10, carrying a clutch return 11, is provided to establish a kinematic connection between the finishing train and a wheel 12 of the chronograph mobile 6, or to interrupt it.

De manière connue, le mouvement comprend une bascule 13 pivotée sur la platine 14 et portant un doigt 15 pour entraîner d'un pas la roue 16 du mobile des minutes 8 à chaque tour complet du mobile de chronographe 6.In known manner, the movement comprises a rocker 13 pivoted on the plate 14 and carrying a finger 15 for driving one step the wheel 16 of the mobile minutes 8 at each complete revolution of the chronograph mobile 6.

Le débrayage et l'embrayage du chronographe sont réalisés par l'intermédiaire d'une commande 18 présentant une première extrémité 19, positionnée à deux heures et destinée à coopérer avec un poussoir (non représenté), et une seconde extrémité 20, portant un crochet agissant sur une roue à colonnes 21 pour la faire tourner d'un pas (dans le sens horaire sur la figure 1) en réponse à chaque pression d'un utilisateur sur la poussoir.The clutch and clutch of the chronograph are made by means of a control 18 having a first end 19, positioned at two o'clock and intended to cooperate with a pusher (not shown), and a second end 20, carrying a hook. acting on a column wheel 21 to rotate it one step (clockwise on the figure 1 ) in response to each user's pressure on the pusher.

La figure 1 représente le mouvement alors que la fonction chronographe est activée. Dans ce cas, une extrémité 22 de la bascule d'embrayage 10 repose sur une colonne de la roue à colonnes 21, ce qui positionne le renvoi d'embrayage 11 en prise avec la roue 12 du mobile de chronographe 6. Lorsque l'utilisateur presse le poussoir agissant sur la commande 18, faisant ainsi tourner la roue à colonnes 21 d'un pas, l'extrémité 22 de la bascule d'embrayage tombe entre deux colonnes, dégageant dans le même temps le renvoi d'embrayage 11 de la roue 12.The figure 1 represents the movement while the chronograph function is activated. In this case, one end 22 of the clutch rocker 10 rests on a column of the column wheel 21, which positions the clutch return 11 in engagement with the wheel 12 of the chronograph mobile 6. When the user press the pushbutton acting on the control 18, thereby rotating the column wheel 21 by one step, the end 22 of the clutch rocker falls between two columns, releasing at the same time the clutch return 11 of the wheel 12.

Le mouvement de la figure 1 comprend également un mécanisme de remise à zéro des compteurs des secondes et des minutes de temps mesurés. Ce mécanisme comprend notamment des marteaux 24 et 26 des secondes et des minutes, formés ici d'une seule pièce à titre illustratif non limitatif. Ces marteaux sont montés pivotant sur la platine 14 au moyen d'une vis à portée 27 et sont solidaires d'un bec 28 destiné à coopérer avec la roue à colonnes 21.The movement of figure 1 also includes a mechanism for resetting the seconds and minutes of time counters measures. This mechanism includes hammers 24 and 26 seconds and minutes, formed here in one piece for illustrative non-limiting. These hammers are pivotally mounted on the plate 14 by means of a bearing screw 27 and are integral with a spout 28 intended to cooperate with the column wheel 21.

Dans la configuration représentée, le bec 28 repose sur une colonne pour positionner les marteaux 24 et 26 en position haute, dans la mesure où la mesure d'un temps est en cours. Le mécanisme de remise à zéro comporte également une commande de remise à zéro 30 présentant une première extrémité 31 positionnée à quatre heures et destinée à coopérer avec un poussoir supplémentaire pour abaisser les marteaux 24 et 26. Cette commande 30 présente une seconde extrémité 32 présentant un cran 33 coopérant avec une goupille 34 solidaire des marteaux.In the configuration shown, the spout 28 rests on a column to position the hammers 24 and 26 in the up position, to the extent that the measurement of a time is in progress. The reset mechanism also comprises a reset control 30 having a first end 31 positioned at four o'clock and intended to cooperate with an additional pusher to lower the hammers 24 and 26. This control 30 has a second end 32 having a notch 33 cooperating with a pin 34 secured to the hammers.

La fonction de ce cran 33 est de maintenir les marteaux en position haute lorsque la mesure du temps est arrêtée par l'utilisateur. Une pression sur le poussoir supplémentaire a alors pour effet de libérer la goupille 34 et d'abaisser les marteaux 24 et 26 sous l'effet de l'action d'un ressort non représenté.The function of this notch 33 is to keep the hammers in the up position when the measurement of time is stopped by the user. Pressing the additional pusher then releases the pin 34 and lowering the hammers 24 and 26 under the action of a spring not shown.

Les marteaux coopèrent alors avec des cames en coeur (dont une est visible sur les figures 2 à 4) pour remettre les compteurs des secondes et des minutes à zéro, de manière conventionnelle.The hammers then cooperate with cams in the heart (one of which is visible on the Figures 2 to 4 ) to reset the seconds and minutes counters to zero, in a conventional manner.

Une nouvelle pression sur le premier poussoir a pour effet de faire tourner la roue à colonnes 21 dont une colonne soulève alors le bec 28 solidaire des marteaux, entraînant le dégagement des cames en coeur, jusqu'à ce que la goupille 34 revienne se positionner à l'intérieur du cran 33.A new pressure on the first pusher has the effect of rotating the column wheel 21, a column then raises the spout 28 secured to the hammers, causing the release of the cams heart, until the pin 34 returns to position at the inside of the screen 33.

On notera que le mouvement comprend également un frein 36 conventionnel, commandé à partir de la roue à colonnes 21 par l'intermédiaire d'une bascule 37, pour bloquer la roue 12 du mobile de chronographe lors des phases d'arrêt de la mesure d'un temps.Note that the movement also comprises a conventional brake 36, controlled from the column wheel 21 by means of a rocker 37, to lock the wheel 12 of the chronograph mobile during the stop phases of the measurement of 'a time.

Conformément à la présente invention, le mouvement comporte en outre un mécanisme de rattrapante dont le fonctionnement sera décrit en détail en relation avec les figures 2 à 4. Ce mécanisme comprend un mobile de rattrapante présentant une roue de rattrapante 40 coaxiale à la roue 12 du mobile de chronographe 6 et solidaire d'un arbre de rattrapante 41 destiné à porter une aiguille de rattrapante (non représentée). L'arbre de rattrapante est creux, l'arbre 7 du mobile de chronographe 6 étant disposé à l'intérieur du creux.In accordance with the present invention, the movement further comprises a split-second mechanism whose operation will be described in detail in relation to the Figures 2 to 4 . This mechanism comprises a catch-up wheel having a split wheel 40 coaxial with the wheel 12 of the mobile chronograph 6 and secured to a split shaft 41 for carrying a catch-up needle (not shown). The split-seconds shaft is hollow, the shaft 7 of the chronograph mobile 6 being disposed inside the hollow.

Il apparaît de la figure 1 qu'un pont de rattrapante 42 est assemblé sur la platine 14 du mouvement, ce pont portant un roulement à billes 43 présentant une bague extérieure 44 montée à friction dans le pont 42 et une bague intérieure (référence 45 sur la figure 4) dans laquelle l'arbre de rattrapante est monté à friction. L'ensemble correspondant est assemblé au mouvement au moyen d'un écrou 46, à titre illustratif non limitatif.It appears from the figure 1 that a jumper bridge 42 is assembled on the plate 14 of the movement, this bridge bearing a ball bearing 43 having an outer ring 44 frictionally mounted in the bridge 42 and an inner ring (reference 45 on the figure 4 ) in which the split shaft is mounted frictionally. The corresponding assembly is assembled to the movement by means of a nut 46, by way of nonlimiting illustration.

On notera que, selon le mode de réalisation préféré tel que représenté, les mobiles de chronographe et de rattrapante sont pivotés suivant un premier axe de rotation situé à distance d'un second axe de rotation suivant lequel la chaussée et la roue des heures sont montées pivotantes (les différents organes d'affichage ont été schématisés par des lignes pointillées sur la figure 1).It will be noted that, according to the preferred embodiment as shown, the chronograph and split-seconds mobiles are pivoted along a first axis of rotation situated at a distance from a second axis of rotation along which the roadway and the hour wheel are mounted. swiveling (the various display elements have been shown schematically by dashed lines on the figure 1 ).

Le mécanisme comprend également un frein de rattrapante 48 monté pivotant sur la platine 14 du mouvement et commandé par une roue à colonnes supplémentaire 51. A cet effet, le frein 48 comprend un bec 50 agencé à une première extrémité pour, dans une première configuration, reposer sur une colonne de la roue à colonnes supplémentaire 51 et, dans une seconde configuration, descendre dans l'espace séparant deux colonnes adjacentes.The mechanism also comprises a catch-up brake 48 pivotally mounted on the plate 14 of the movement and controlled by an additional column wheel 51. For this purpose, the brake 48 comprises a spout 50 arranged at a first end for, in a first configuration, resting on a column of the additional column wheel 51 and, in a second configuration, down into the space separating two adjacent columns.

Le frein comprend également, à son extrémité opposée, une unique surface de contact 52 agencée pour coopérer avec la périphérie de la roue de rattrapante 40 afin de la verrouiller lorsque le bec 50 ne repose pas sur une colonne de la roue à colonnes supplémentaires. Lorsque le bec est soulevé et repose sur une colonne, la roue de rattrapante est libre de tourner et se place suivant une position angulaire prédéfinie en référence à la roue 12 du mobile de chronographe 6, tel que cela sera exposé plus loin.The brake also comprises, at its opposite end, a single contact surface 52 arranged to cooperate with the periphery of the split wheel 40 to lock it when the spout 50 does not rest on a column of the additional column wheel. When the spout is raised and rests on a column, the split wheel is free to rotate and is placed in a predefined angular position with reference to the wheel 12 of the chronograph mobile 6, as will be explained below.

Une troisième commande 53, de rattrapante, est prévue pour coopérer avec un troisième poussoir (non représenté), ici à neuf heures. Cette commande comprend un crochet 54 agencée pour agir sur la roue à colonnes supplémentaire 51 pour la faire tourner d'un pas (dans le sens anti-horaire sur la figure 1) à chaque pression de l'utilisateur sur le troisième poussoir, et faire pivoter le frein dans un sens ou dans l'autre.A third control 53, catch-up, is provided to cooperate with a third pusher (not shown), here at nine o'clock. This control comprises a hook 54 arranged to act on the additional column wheel 51 to rotate one step (counterclockwise on the figure 1 ) each time the user presses on the third push-button, and rotate the brake in one direction or the other.

Les figures 2 et 3 représentent des vues en plan simplifiées, côté cadran, d'un détail de construction du mouvement de la figure 1, respectivement dans une première et dans une seconde configurations, permettant en particulier d'exposer le fonctionnement du mécanisme de rattrapante.The figures 2 and 3 represent simplified plan views, on the dial side, of a construction detail of the movement of the figure 1 , respectively in a first and a second configuration, in particular to expose the operation of the split-second mechanism.

La configuration de la figure 2 correspond à celle de la figure 1, à savoir que la mesure d'un temps est en cours et que le mobile de rattrapante est libre de tourner pour superposer l'aiguille de rattrapante à l'aiguille de chronographe.The configuration of the figure 2 corresponds to that of the figure 1 that is, that the measurement of a time is in progress and that the flywheel is free to turn to superimpose the split-second hand to the chronograph hand.

A cet effet, la roue de rattrapante 40 porte un levier de rattrapante 56, monté pivotant à proximité de la périphérie de la roue. Le levier de rattrapante porte un galet 57 cylindrique agencé pour rouler sur la périphérie d'une came en coeur 58 solidaire du mobile de chronographe 6, sous l'effet de l'action d'un ressort de rattrapante (visible sur la figure 4), de manière connue. Ainsi, lorsque la roue de rattrapante 40 est libre de tourner, tel que représenté sur la figure 2, elle se positionne angulairement par rapport à la came en coeur 58 de telle manière que le galet 57 se trouve en appui contre la portion de plus faible rayon. Dans cette position, les aiguilles de chronographe et de rattrapante sont superposées.For this purpose, the split wheel 40 carries a catch-up lever 56, pivotally mounted near the periphery of the wheel. The retractor lever carries a cylindrical roller 57 arranged to roll on the periphery of a core cam 58 secured to the chronograph mobile 6, under the effect of the action of a split spring (visible on the figure 4 ), in known manner. Thus, when the split wheel 40 is free to rotate, as shown in FIG. figure 2 it is positioned angularly with respect to the core cam 58 so that the roller 57 is in abutment against the smaller radius portion. In this position, the chronograph and split seconds hands are superimposed.

Lorsque la commande de rattrapante 53 est actionnée, la configuration du mouvement devient celle de la figure 3. La roue à colonnes supplémentaire 51 tourne d'un pas, le frein de rattrapante 48 est alors abaissé sur la roue de rattrapante 40 pour la bloquer tandis que le mobile de chronographe poursuit sa rotation. L'aiguille de rattrapante est stoppée tandis que l'aiguille de chronographe continue de tourner.When the split-second control 53 is actuated, the configuration of the movement becomes that of the figure 3 . The additional column wheel 51 turns one step, the split brake 48 is then lowered on the split wheel 40 to block it while the chronograph mobile continues its rotation. The split-second hand is stopped while the chronograph hand continues to rotate.

Dans le même temps, le rayon de la came en coeur 58 en regard duquel se trouve le galet 57 augmente ce qui soulève le levier de rattrapante 56 à l'encontre de la force exercée par le ressort de rattrapante.At the same time, the radius of the core cam 58 facing which is the roller 57 increases which raises the split lever 56 against the force exerted by the spring catches.

Dans le cas d'une nouvelle action sur la commande 53, la roue à colonnes supplémentaire 51 tourne à nouveau d'un pas, ce qui entraîne la libération de la roue de rattrapante 40 par le frein 48. A cet instant, le ressort de rattrapante peut intervenir pour presser le galet 57 contre la périphérie de la came en coeur 58 de manière à le replacer dans la position de la figure 2. Les aiguilles sont alors à nouveau superposées.In the case of a new action on the control 53, the additional column wheel 51 turns again one step, resulting in the release of the split-second wheel 40 by the brake 48. At this instant, the split-spring can intervene to press the roller 57 against the periphery of the core cam 58 so as to place it back in the position of the figure 2 . The hands are then again superimposed.

La figure 4 représente une vue en coupe simplifiée, selon la ligne IV-IV de la figure 1, d'un détail de construction du mouvement qui vient d'être décrit en relation avec les figures 1 à 3, dans la première configuration de la figure 2. Cette figure rend plus évidentes les interactions entre les éléments mentionnés précédemment, en particulier entre les mobiles de chronographe 6 et de rattrapante.The figure 4 represents a simplified sectional view along line IV-IV of FIG. figure 1 , a construction detail of the movement that has just been described in relation to the Figures 1 to 3 , in the first configuration of the figure 2 . This figure makes more obvious the interactions between the elements mentioned above, in particular between the chronograph mobile 6 and rattrapante.

Il apparaît notamment de cette figure que la came en coeur 58 est rendue solidaire de la roue de chronographe 12 au moyen d'une goupille 60, de manière conventionnelle. De même, le ressort de rattrapante 61 est riveté dans la roue de rattrapante 40 conformément aux montages de l'art antérieur.It appears in particular from this figure that the core cam 58 is secured to the chronograph wheel 12 by means of a pin 60, in a conventional manner. Similarly, the split spring 61 is riveted in the split wheel 40 according to the arrangements of the prior art.

Il ressort également que le mobile de chronographe 6 pivote, d'une part, dans un mobile de centre 62 du rouage de finissage par son extrémité 63 située à l'intérieur du mouvement et, d'autre part, dans l'arbre de rattrapante 41, ce dernier pivotant dans le roulement à billes 43, conformément à la présente invention.It also appears that the chronograph mobile 6 pivots, on the one hand, in a center mobile 62 of the finishing gear train by its end 63 situated inside the movement and, on the other hand, in the split-seconds shaft 41, the latter pivoting in the ball bearing 43, according to the present invention.

Grâce à cette construction, le mobile de rattrapante présente une stabilité accrue par rapport aux mécanismes connus de l'état de la technique.Thanks to this construction, the mobile rattrapante has an increased stability compared to known mechanisms of the state of the art.

De ce fait, l'utilisation d'un frein de rattrapante 48 unique ne compromet pas la marche du mobile de chronographe tout en permettant une simplification de sa fabrication et de son assemblage par rapport à l'utilisation d'une pince de rattrapante mettant en oeuvre deux freins antagonistes.Therefore, the use of a single split brake 48 does not compromise the operation of the chronograph mobile while allowing a simplification of its manufacture and its assembly compared to the use of a split-seconds pliers implementing work two antagonistic brakes.

Par ailleurs, on notera que la construction avantageuse du mouvement selon la présente invention propose de disposer les roues de chronographe 12 et de rattrapante 40 de telle manière qu'elles sont adjacentes, sans l'interposition d'un élément du bâti entre elles.Furthermore, it will be noted that the advantageous construction of the movement according to the present invention proposes to arrange the chronograph wheels 12 and the adjuster wheel 40 in such a way that they are adjacent, without the interposition of a frame element between them.

Grâce à cette caractéristique particulière, il est possible de ne prévoir qu'une seule came en coeur 58 pour, à la fois, remettre à zéro le compteur de chronographe, par l'intermédiaire du marteau 24, et indexer la position angulaire de l'aiguille de rattrapante sur celle de l'aiguille de chronographe, par l'intermédiaire du levier de rattrapante 56. Pour rappel, on notera que les mouvements de l'état de la technique prévoient une première came en coeur pour assurer la remise à zéro du compteur de chronographe et une seconde came en coeur pour assurer l'indexation de l'aiguille de rattrapante ce qui implique, bien entendu, des complications tant au niveau de la fabrication que de l'assemblage du mouvement.Thanks to this particular characteristic, it is possible to provide only one core cam 58 for both resetting the counter. chronograph, through the hammer 24, and index the angular position of the split-second needle on that of the chronograph hand, through the split lever 56. As a reminder, note that the movements of the state of the art provide for a first cam heart to ensure the reset of the chronograph counter and a second cam in the heart to ensure the indexing of the catwalk needle which implies, of course, complications both at manufacturing level as the assembly of the movement.

La description qui précède s'attache à décrire un mode de réalisation particulier à titre d'illustration non limitative et, l'invention n'est pas limitée, par exemple, à la disposition du rouage de chronographe du côté ponts du mouvement ou à l'utilisation d'un roulement à billes pour assembler le mobile de rattrapante au bâti du mouvement. De même, la description qui précède concerne une rattrapante associée à un mobile de chronographe, destiné à afficher les secondes de temps mesurés, mais l'homme du métier ne rencontrera pas de difficulté particulière pour mettre en oeuvre les principes décrits ici, en fonction de ses propres besoins, comme par exemple pour associer une rattrapante au compteur des minutes de temps mesurés.The foregoing description attempts to describe a particular embodiment by way of non-limiting illustration and, the invention is not limited, for example, to the disposition of the chronograph wheel on the bridge side of the movement or to the use of a ball bearing to assemble the split-seconds mobile with the frame of the movement. Similarly, the above description relates to a catch-up associated with a chronograph mobile, intended to display the measured seconds of time, but the skilled person will not encounter any particular difficulty to implement the principles described here, according to its own needs, as for example to associate a catch-up with the counter of measured minutes of time.

Par ailleurs, l'homme du métier ne rencontrera pas non plus de difficulté particulière pour adapter tout mécanisme d'isolateur de rattrapante connu au mouvement qui vient d'être décrit, comme par exemple celui du brevet CH 686 545G A3 déjà mentionné, sans sortir du cadre de la présente invention.Furthermore, the skilled person will not encounter any particular difficulty to adapt any known split-second isolator mechanism to the movement just described, such as that of the patent. CH 686 545G A3 already mentioned, without departing from the scope of the present invention.

Claims (11)

Mouvement horloger du type chronographe à rattrapante comportant un bâti (14, 42) portant un rouage de finissage susceptible d'être relié cinématiquement à un rouage de chronographe comprenant au moins un mobile de chronographe (6) présentant un arbre de chronographe (7) destiné à porter un premier organe d'affichage des secondes, le mouvement comportant un mobile de rattrapante (40, 41) coaxial audit mobile de chronographe et présentant un arbre de rattrapante (41) destiné à porter un second organe d'affichage des secondes,
caractérisé en ce que ledit arbre de rattrapante est creux et traversé par ledit arbre de chronographe, ledit mobile de rattrapante étant monté en rotation en référence audit bâti par l'intermédiaire d'un palier (43).A split watch chronograph movement comprising a frame (14, 42) carrying a finishing train capable of being kinematically connected to a chronograph wheel including at least one chronograph wheel (6) having a chronograph shaft (7) for carrying a first seconds display member, the movement comprising a split-seconds mobile (40, 41) coaxial with said chronograph mobile and having a split-seconds shaft (41) intended to carry a second seconds display member,
characterized in that said splitter shaft is hollow and traversed by said chronograph shaft, said splitter mobile being rotatably mounted with reference to said frame via a bearing (43). Mouvement selon la revendication 1, une came en coeur (58) étant solidaire en rotation dudit arbre de chronographe (7) et destinée à coopérer par sa périphérie avec un marteau de remise à zéro (24) pour positionner ledit premier organe d'affichage dans une position de repos prédéfinie,
caractérisé en ce que ledit mobile de rattrapante (40, 41) comporte une roue (40) portant un levier de rattrapante (56) présentant une surface de contact (57) agencée pour être maintenue en contact permanent avec la périphérie de ladite came en coeur (58) sous l'action de moyens élastiques (61) pour assurer une superposition des premier et second organes d'affichage, le mouvement comportant en outre un organe de blocage (48) présentant une surface (52) destinée à coopérer avec ledit mobile de rattrapante, en réponse à une action d'un utilisateur, pour verrouiller ledit second organe d'affichage dans une position donnée.Movement according to claim 1, a core cam (58) being rotatably connected to said chronograph shaft (7) and intended to cooperate by its periphery with a reset hammer (24) for positioning said first display member in a predefined rest position,
characterized in that said catch-up wheel (40, 41) comprises a wheel (40) carrying a catch-up lever (56) having a contact surface (57) arranged to be kept in permanent contact with the periphery of said heart-shaped cam (58) under the action of elastic means (61) to ensure a superposition of the first and second display members, the movement further comprising a locking member (48) having a surface (52) for cooperating with said mobile in response to an action of a user, for latching said second display member in a given position. Mouvement selon la revendication 2, caractérisé en ce que ledit organe de blocage comprend un frein (48) unique présentant une surface (52) ayant sensiblement la forme d'une portion de cylindre et destinée à coopérer avec la roue (40) dudit mobile de rattrapante.Movement according to claim 2, characterized in that said locking member comprises a single brake (48) having a surface (52) having substantially the shape of a cylinder portion and intended to cooperate with the wheel (40) of said mobile split. Mouvement selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit palier (43) est agencé entre ladite roue (40) du mobile de rattrapante et l'extrémité de son arbre (41) destinée à porter ledit second organe d'affichage.Movement according to any one of the preceding claims, characterized in that said bearing (43) is arranged between said wheel (40) of the retractable wheel and the end of its shaft (41) intended to carry said second display member . Mouvement selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit palier comprend un roulement (43) présentant une première bague (44) solidaire dudit bâti (42) et une seconde bague (45) solidaire dudit arbre de rattrapante (41).Movement according to any one of the preceding claims, characterized in that said bearing comprises a bearing (43) having a first ring (44) integral with said frame (42) and a second ring (45) integral with said catch-up shaft (41) . Mouvement selon la revendication 5, caractérisé en ce que ledit roulement (43) est porté par un pont (42) assemblé sur la platine du mouvement, de son côté cadran.Movement according to claim 5, characterized in that said bearing (43) is carried by a bridge (42) assembled on the platen of the movement, on its dial side. Mouvement selon la revendication 5 ou 6, caractérisé en ce que ledit roulement (43) est un roulement à billes.Movement according to claim 5 or 6, characterized in that said bearing (43) is a ball bearing. Mouvement selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit mobile de chronographe (6) est guidé en rotation, d'une part, en ayant une première extrémité (63), située dans le mouvement, logée à l'intérieur d'un arbre d'un mobile (62) dudit rouage de finissage et, d'autre part, par ledit arbre de rattrapante (41).Movement according to any one of the preceding claims, characterized in that said chronograph mobile (6) is guided in rotation, on the one hand, having a first end (63), located in the movement, housed inside a shaft of a mobile (62) of said work train and, secondly, by said splitter shaft (41). Mouvement selon l'une quelconque des revendications précédentes, ledit mobile de chronographe (6) présentant une roue de chronographe (12), caractérisé en ce que ladite roue de chronographe et ladite roue (40) du mobile de rattrapante sont adjacentes sans l'interposition d'un élément dudit bâti entre elles.Movement according to any one of the preceding claims, said chronograph mobile (6) having a chronograph wheel (12), characterized in that said chronograph wheel and said wheel (40) of the split-seconds mobile are adjacent without the interposition an element of said frame between them. Mouvement selon l'une quelconque des revendications précédentes, lesdits premier et second organes d'affichage des secondes étant agencés pour pivoter suivant un premier axe de rotation, le mouvement comportant en outre au moins un organe d'affichage des heures courantes et un organe d'affichage des minutes courantes agencés pour pivoter suivant au moins un second axe de rotation, caractérisé en ce que ledit premier axe de rotation est situé à distance dudit second axe de rotation.Movement according to any one of the preceding claims, said first and second seconds display members being arranged for pivoting along a first axis of rotation, the movement further comprising at least one display member for current hours and a display member displaying the current minutes arranged to rotate along at least a second axis of rotation, characterized in that said first axis of rotation is located at a distance from said second axis of rotation. Pièce d'horlogerie comportant une boîte fermée par une glace au travers de laquelle sont visibles au moins des premier et second organes d'affichage des secondes, caractérisée en ce qu'un mouvement horloger selon l'une quelconque des revendications précédentes est logé dans ladite boîte pour entraîner lesdits premier et second organes d'affichage.Timepiece comprising a box closed by an ice through which are visible at least first and second second display members, characterized in that a watch movement according to any one of the preceding claims is housed in said box for driving said first and second display members.
EP08019674A 2007-11-21 2008-11-11 Timepiece movement such as a split-seconds chronograph and timepiece equipped with such a movement Withdrawn EP2063326A2 (en)

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CH01799/07A CH706021B1 (en) 2007-11-21 2007-11-21 watch movement type and chronograph timepiece provided with such a movement.

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EP2063326A2 true EP2063326A2 (en) 2009-05-27

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US (1) US20090129209A1 (en)
EP (1) EP2063326A2 (en)
JP (1) JP2009128361A (en)
CN (1) CN101441438A (en)
CH (1) CH706021B1 (en)
RU (1) RU2008145897A (en)

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RU2008145897A (en) 2010-05-27
CH706021B1 (en) 2013-07-31
JP2009128361A (en) 2009-06-11
US20090129209A1 (en) 2009-05-21
CN101441438A (en) 2009-05-27

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