EP1333345A1 - Device having clockwork-movement and chronograph module - Google Patents

Device having clockwork-movement and chronograph module Download PDF

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Publication number
EP1333345A1
EP1333345A1 EP02405063A EP02405063A EP1333345A1 EP 1333345 A1 EP1333345 A1 EP 1333345A1 EP 02405063 A EP02405063 A EP 02405063A EP 02405063 A EP02405063 A EP 02405063A EP 1333345 A1 EP1333345 A1 EP 1333345A1
Authority
EP
European Patent Office
Prior art keywords
chronograph
module
movement
balance
mca
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
EP02405063A
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German (de)
French (fr)
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EP1333345B1 (en
Inventor
Jolidon Hugues
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.)
TAG Heuer SA
Original Assignee
TAG Heuer 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
Priority to EP02405063A priority Critical patent/EP1333345B1/en
Application filed by TAG Heuer SA filed Critical TAG Heuer SA
Priority to DE60225779T priority patent/DE60225779T2/en
Priority to AT02405063T priority patent/ATE390654T1/en
Priority to PCT/CH2003/000063 priority patent/WO2003065130A2/en
Priority to DE60302040T priority patent/DE60302040T2/en
Priority to AU2003201592A priority patent/AU2003201592A1/en
Priority to JP2003564658A priority patent/JP4505054B2/en
Priority to EP03700289A priority patent/EP1470452B1/en
Priority to AT03700289T priority patent/ATE308068T1/en
Priority to TW092109144A priority patent/TWI276930B/en
Priority to CH01350/03A priority patent/CH697015A5/en
Priority to CH01351/03A priority patent/CH697016A5/en
Publication of EP1333345A1 publication Critical patent/EP1333345A1/en
Priority to US10/899,713 priority patent/US7905655B2/en
Application granted granted Critical
Publication of EP1333345B1 publication Critical patent/EP1333345B1/en
Priority to US13/047,228 priority patent/US8308345B2/en
Priority to US13/047,157 priority patent/US8113707B2/en
Priority to US13/047,197 priority patent/US8182138B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • G04B37/00—Cases
    • G04B37/06—Forming the passage for the winding stem through the case; Divided winding stems
    • G04B37/066—Divided stem (tige brisee)
    • 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
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/12—Driving mechanisms with mainspring with several mainsprings
    • 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
    • G04F7/0809—Watches or clocks with stop devices, e.g. chronograph with reset mechanisms with single hammers, i.e. one hammer acts on each counter
    • 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
    • G04F7/088—Special arrangements with display of fraction of seconds, e.g. foudroyante
    • 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
    • G04F7/0885—Modular constructions involving interchangeability with one or more chronograph modules on a single base movement
    • 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
    • G04F7/0895—Special arrangements with a separate barrel for the chronograph functions

Definitions

  • the present invention relates to a device comprising a usual time movement and a chronograph module according to the preamble of independent claim 1.
  • Wristwatches whose case houses a chronograph module or movement provided with a quartz oscillator allow the wearer to carry out measurements of a precision which varies according to the type of display, i.e. on the order of a tenth or hundredth of a second, depending on whether this display is analog or digital respectively.
  • CH-667,771 describes a chronograph watch comprising a clockwork movement usual central driving the hour, minute and second hands and a autonomous chronograph movement with a timepiece and at least one indicator driven by an electric motor.
  • Movement organs chronograph are arranged at the periphery of the usual movement or movement of based. Each movement has its own regulator oscillating at the same frequency than the other.
  • the chronograph movement is provided with a cage independent bell-shaped cap on the basic watch movement and girdling the latter. The two movements are connected by means of a plate interposed between them.
  • the measurement accuracy of mechanical chronographs currently offered on the market is, for the most part, of the order of 0.125 seconds, the pendulum correspondent oscillating at 28,800 vibrations per hour, and more rarely, for certain other significantly more expensive mechanical chronographs, including the pendulum oscillates at 36,000 vibrations per hour, of the order of 0.1 seconds.
  • This measurement accuracy cannot be increased with mechanical chronographs having a common time base for the hourly part and the part chronograph, for several reasons.
  • the use for the hourly part of a pendulum oscillating at a higher frequency would modify the speed of unwinding of the barrel spring and would decrease the duration of the power reserve of the movement.
  • a timepiece more particularly a wristwatch housing a device comprising a movement hourly basis and a "fully mechanical" chronograph movement
  • Its price is therefore high, even though the precision of its chronograph movement is mediocre, not reaching even that of a quartz chronograph movement with low-end digital display.
  • the production of a timepiece housing a double movement, time and chronograph, both mechanical confronts the manufacturer with a delicate problem of size or volume of the part, problem which, in the absence of solution, will result in an unsightly likely to jeopardize the commercial success of the watch.
  • the object of the present invention is to provide a device which overcomes the disadvantage lack of precision while ensuring, moreover, a truly reliable reading whatever the characteristic of the regulator chosen, therefore the expected accuracy, and excluding all disturbances (set out above) on the hourly part of the device movements.
  • the device according to the invention advantageously finds its place in a wristwatch chronograph (not specifically referenced), as shown in figure 1.
  • This watch has: at 2 o'clock, a pusher crown 1 allowing remount a barrel of the chronograph module of the device - module below called MCA autonomous chronograph module - and to control the functions start and stop of the MCA autonomous chronograph module, at 3 o'clock, a crown winding 2 of the time movement of the device, movement hereinafter referred to as basic movement MB, and at 4 o'clock a push button 3 activated for the reset and return to the fly of the MCA autonomous chronograph module.
  • the chronograph watch allows the display of the current time using a hand hours 4, a minute hand 5 and a small second hand 6 arranged at three o'clock. It also displays the measurement of an elapsed time using a thirty-minute counter 7, placed at nine o'clock and fitted with a hand 8, a central second hand chronograph 9 and a hundredths of seconds counter 10 located at six o'clock and fitted with a hand 11.
  • a power reserve counter 12 of the MCA autonomous chronograph module fitted with a hand 13 and located at twelve hours is used to check the autonomy of said module until the next reassembly.
  • the graduations of these different counters are carried on a dial 14; in particular hundredths of a second correspond to a hundred marks materialized on a ruler circular, the needle 11 rotating 360 ° per second to ensure comfortable and precise reading of the time interval.
  • Fig. 2 is a perspective view showing the assembly principle of the module MCA standalone chronograph with the basic MB movement, providing centering elements and fasteners.
  • a basic board 76 of the module MCA standalone chronograph has two holes (not visible and not referenced) in which are driven cylindrical feet 16,17 intended to engage in holes in the dial feet 18.19 of a plate 15 of the basic movement MB, aux purposes of correct angular positioning of the MCA module relative to the movement MB.
  • Fixing means connect the basic movement MB and the module MCA autonomous chronograph at their periphery. According to the example, screws 20 A, 21 A pass through holes (not visible and not referenced) made in plate 76 and are screwed into corresponding threaded holes 20, 21 of the plate 15.
  • a 1 A push rod intended to receive the pusher ring 1 (Figure 1) and, emerging from its top face, a shaft 71 of the minute mobile, a shaft 67 of the second mobile, a tree 61 of the mobile hundredths of a second and a tree 88 of the small second, and secondly, on the basic module MB, emerging from its side, a push rod 2 B intended for receive the winding crown 2 (figure 1) and, emerging from its top face, at centered, a wheel 86 of the seconds mobile and a wheel 77 of the minutes mobile.
  • Fig. 3 is a perspective view of the two movements in the assembled state, essentially showing the MCA autonomous chronograph module covering the basic movement MB (mainly visualized by its plate 15 and its rod winder 2 B) and illustrating the remarkable and original arrangement and conformation of the main organs and elements of the MCA autonomous chronograph module on its base board 76.
  • This extremely compact and compact arrangement results optimal use of volumes, which saves costly miniaturization said organs and elements without sacrificing aesthetics, this design and construction making it possible to limit the dimensions of the device in the assembled state to very small values.
  • these values are of the order 7.75 mm (height) and 30 mm (overall diameter), the dimensions of the only MCA chronograph module not exceeding values of the order of 4 mm (height) and 30 mm (diameter). We understand that these dimensions allow dressings of the device of the most varied and of a remarkable and successful aesthetic.
  • the MCA autonomous chronograph module has its own barrel 22 and its own regulating body including in particular a pendulum 23. This feature removes any PTO on the base MB movement and allows the balance 23 to be stopped without disturbing the balance-spring of the movement of MB base.
  • the MCA chronograph is switched on and off by short pressure on the push-button 1 A, that is to say on the crown 1.
  • Each of these pressures produces a movement towards the center of the MCA chronograph of a plate 24 comprising grooves in the form of oblong openings 25, 26, this displacement, guided by screws 27, 28 cooperating with said grooves, simultaneously bringing into action a spout 29.
  • the plate 24 and the spout 29 return to their starting position under the action of a wire spring 40 and a return spring 41.
  • This reset is done by the action of a single hammer 48.
  • the aforementioned pressure on the button 3 rotates a rocker 42 and consequently its beak 44 around a pillar axis 43, which has the effect of driving an inverter 45 with its pin 46, the latter in turn controlling a lever 47 which rotates the hammer 48 whose the three nozzles (not referenced) strike hearts 49, 50, 51 mounted respectively on the minutes, seconds and hour counters hundredths of a second (see also Figure 4) and cause the module to zero MCA chronograph.
  • the hammer 48 is fixed to the gear train 52 by a screw 53 and a washer eccentric 54.
  • the eccentric washer 54 makes it possible to adjust the setting of the hammer 48 so that the three nozzles of said hammer 48 press simultaneously on the three cores 49, 50 and 51, thus resetting the MCA chronograph module to zero just before the spout 44 leaves the reverser 45.
  • the spout 44 When the pressure is released on the rocker 42, the spout 44, held by a return spring 56, can pivot around a pin 55 to avoid the reverser 45 and allow the rocker 42 to return to its rest position under the effect of a spring recall 57.
  • the operating principle described above therefore serves to avoid, when handing over zero of the MCA autonomous chronograph module and the balance 23 being in movement, any stopping of the pendulum due to prolonged friction of the shafts 61, 67 and 71.
  • the same pressure exerted on the press button 3 causes, when the balance 23 is stopped, a reset to the MCA chronograph module and, when the balance 23 is in motion, resetting the chronograph module to zero MCA (operation called back on the fly) followed by an automatic restart of a new measurement (without obligation to press on the push rod 1 A).
  • the balance spring balance of the chronograph regulator is stopped when the latter is not in operation.
  • Fig. 4 is a perspective view illustrating the arrangement of the regulating member, the cog and barrel mounted on the base plate 76 of the chronograph module autonomous MCA.
  • the balance assembly 23 hairspring is dimensioned to oscillate at a frequency of 360,000 vibrations per hour.
  • FIG. 4 shows an anchor 113 and an escape wheel 58, these elements being able to be chosen from existing assortments.
  • a wheel 59, driven onto the shaft of the escape wheel 58 is chosen so that it rotates at a speed of 2.5 revolutions per second, the balance 23 oscillating, according to the example, at 50 Hz (i.e. 360,000 vibrations per hour).
  • a wheel 60 of the hundredths of a second mobile spins clockwise at the speed of one revolution per second.
  • a wheel (not visible in the figure, because hidden by the heart 51), integral with the wheel 60, is mounted on the shaft 61 of the hundredths of a second mobile and meshes with a wheel 62 driven on a pinion 63, the latter meshing with a wheel 64.
  • a wheel 65 of the seconds wheel turns clockwise at the speed of one revolution per minute thanks to an inverter 66 which connects it to the wheel 64.
  • a wheel 84 (shown in FIG. 5) hidden by the heart 50 and secured to the wheel 65 is mounted on the shaft 67 of the seconds mobile. This wheel 84 meshes with a wheel 68 driven on a shaft secured to a wheel 69 which drives a wheel 70 mounted on the shaft 71 of the minutes mobile.
  • the wheel 70 rotates clockwise at the speed of one revolution in thirty minutes, it meshes with a wheel 72 driven on a shaft 73 secured to a wheel 74 which meshes with a ring gear 75 of the barrel 22, the latter taking place under the action of the barrel spring (not shown) clockwise at the speed of one revolution in 29.7 minutes.
  • the barrel spring In a mechanical movement, the barrel spring is generally calculated for perform around 7.5 laps. Depending on the embodiment described, for reasons of space saving, the barrel spring is dimensioned to allow the barrel perform approximately six laps, which equates to a power reserve of 178.2 minutes. But as explained above, the use of a regulatory body including the high-frequency oscillating balance spring assembly (360,000 vibrations per hour) reduces the use of the mainspring torque to the period during which the function ⁇ engine torque / ⁇ time is linear (see diagram above), the useful power reserve of the MCA autonomous chronograph module is around one hundred and twenty minutes.
  • the present invention also gives the possibility of modify the oscillation frequency of the balance spring, the measurement resolution and the power reserve of the MCA autonomous chronograph module.
  • the oscillation frequency provided by the regulator of the autonomous chronograph module MCA is equal to N times the oscillation frequency supplied by the regulating body of the basic movement MB, for example, for a basic movement of a frequency of 28,800 vibrations per hour, N can be chosen at 12.50, so that the MCA autonomous chronograph module beats the hundredth of a second.
  • Fig. 5 illustrates one of the many ways of transferring time information, provided by the basic movement MB through the chronograph module autonomous MCA, with hour hands 4, 5 and 6 arranged on the dial 14 ( Figure 1).
  • the wheel 77 mounted on the ground of the basic movement MB meshes with a reference 78 driven out on a tree 79 integral with the references 80, 81.
  • the reference 80 drives a carriageway 82 carrying the 5 minute hand and freely mounted on a tube 85, while the reference 81 drives a barrel wheel 83 carrying the needle of hours 4.
  • a wheel 86 mounted on the seconds shaft of the basic movement MB meshes with a reference 87 which drives a wheel 89 driven on a small shaft second 88 located at three o'clock.
  • a wire spring (not shown) can press inside a groove 90 of tree 88 of the small second.
  • This arrangement allows to arrange - according to a common practice - the tree 67 of the second hand 9 of the chronograph in the center of the MCA module (see also Figure 4) and offers the user a display of the time interval measured by the chronograph module autonomous MCA.
  • FIG. 8 (comparable with FIG. 2) represents a variant according to which a tree of seconds 67 B, a carriageway 82 B and a cannon wheel 83 B of the basic movement MB have been extended so as to pass through a central opening 115 of the module MCA stand-alone chronograph with central hour, minute and second display of the dial 14.
  • the seconds hand of the movement MCA autonomous chronograph is carried by an 88 A shaft arranged at three o'clock a counter.
  • Fig. 6 is a perspective representation of the module reassembly system MCA standalone chronograph mounted on the base plate 76.
  • Winding manual of the barrel 22 is effected by rotation of the push rod 1 A, in the rest, in the same clockwise direction as that required for manual winding of the basic mechanical movement MB, necessary for a return to service of this last when it has not been worn for a sufficiently long period and the spring of the barrel is fully unwound (automatic movement).
  • the push rod 1 A is guided by a stud 91 and held in place by a spring leaf 92.
  • a pressure exerted from below on the end of a lug 93 releases the rod push-button 1 A and allows the movement to be removed from its case shown in FIG. 1 and not referenced, provided that the same operation is performed on the rod winder 2 B (not shown in this figure).
  • a corner wheel 94 actuated by a drive square 95 of the push rod 1 A drives a reference 96 which meshes with a clutch wheel 97.
  • This wheel 97 is engaged with a reference 98 if it rotates counterclockwise around its shaft 114, or disengaged from this reference 98 if it rotates clockwise, the shaft 114 being truncated into almond shape.
  • the reference 98 driven by the clutch wheel 97 when it turns counterclockwise, meshes with a reference 99 which activates a ratchet 100 mounted on a bung 101 of the barrel 22.
  • the reassembly of the spring of barrel is therefore rotated by the ratchet 100 clockwise (the system for the conservation of the energy stored by the spring barrel during reassembly, known to those skilled in the art, is not shown).
  • Fig. 7 shows in perspective an exemplary embodiment of a device for power reserve of the MCA autonomous chronograph module, information from the power reserve being displayed at midday on the frame 14 by the hand 12 ( Figure 1).
  • a ratchet turn 100 (FIG. 6), during the winding, causes an angular displacement of a power reserve shaft 102 around its axis, equivalent and opposite to that generated by a revolution of the crown 75 of barrel 22 on the same shaft 102 when the module is running MCA autonomous chronograph.
  • the ratchet 100 and the wheel 98 driven on the shaft 106 rotate at the same speed and in the same direction (clockwise), a wheel 103, integral with a shaft 106, meshes with an external toothing of a solar crown 104, the internal toothing of the solar crown 104 causes a planetary wheel 105, the wheel 105 being integral with a planetary wheel 107 which rests on an inner toothing of a solar crown 108 to rotate, in the direction counterclockwise, shaft 102 of the power reserve at an angle of 30.375 degrees per revolution ratchet 100.
  • the crown 75 of the barrel 22 drives a wheel 109, this wheel 109 being integral with a pinion 110 and maintained by a deflection bridge 111.
  • the pinion 111 meshes with an external toothing of the solar crown 108, the internal toothing of the solar crown 108 causes the planetary wheel 107 integral with planetary wheel 105 which rests on the teeth inside of the solar corona 104 to rotate the shaft clockwise 102 of the power reserve at an angle of 30.375 degrees per revolution of the crown 75 barrel 22.
  • the power reserve of the chronograph module autonomous MCA is around one hundred and twenty minutes, the barrel 22 goes around in 29.7 minutes, a barrel revolution 22 corresponding to a rotation of 30.375 degrees from tree 102 of the power reserve.
  • the approximate power reserve of the module MCA autonomous chronograph therefore corresponds to a rotation angle of 127.72 degrees from tree 102 of the market reserve.
  • this device (not shown), which may consist for example to drive out a stopper pin in a hole arranged on a disc planetary 112, this pin cooperating with an oblong opening concentric with the axis of the shaft 102 and arranged on a mechanism cover.
  • the MCA autonomous chronograph module can be implemented in as such, that is to say not necessarily associated with the basic movement MB.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Electromechanical Clocks (AREA)
  • Switches With Compound Operations (AREA)

Abstract

The timepiece consists of a basic timekeeper (MB) with a wholly mechanical chronograph (MCA) secured on top by locating pins. The chronograph has a separate barrel (22) and regulator with balance wheel (23) and is actuated by a push button rod (1A). The rate of oscillation of the chronograph regulator is N times that of the timekeeper regulator and the value is chosen to suit a particular application.

Description

La présente invention porte sur un dispositif comprenant un mouvement horaire usuel et un module chronographe selon le préambule de la revendication indépendante 1.The present invention relates to a device comprising a usual time movement and a chronograph module according to the preamble of independent claim 1.

Le marché des montres chronographes dotées d'un dispositif de ce genre s'est considérablement développé au cours des dernières années, en particulier dans le segment haut de gamme. Cependant, une très grande partie de telles montres comporte une planche chronographe (appelée indifféremment, ci-après, partie, module ou mouvement chronographe), avec oscillateur à quartz, alors qu'une clientèle éprouve un attrait croissant pour des montres chronographes mécaniques. Mais avec ces dernières, pour des raisons explicitées plus loin, l'homme du métier se heurte notamment à un problème de précision (on parle aussi de résolution) de lecture.The market for chronograph watches with such a device has grown considerably developed in recent years, especially in the high-end segment. However, a very large part of such watches includes a chronograph board (referred to interchangeably, below, part, module or chronograph movement), with quartz oscillator, while a customers are experiencing an increasing attraction for mechanical chronograph watches. But with the latter, for reasons explained below, the skilled person particularly comes up against a problem of precision (we also speak of resolution) of reading.

Les montres-bracelets dont la boíte abrite un module ou mouvement chronographe pourvu d'un oscillateurs à quartz permettent au porteur d'effectuer des mesures d'une précision qui varie selon le type d'affichage, à savoir de l'ordre du dixième ou du centième de seconde, selon que cet affichage est analogique ou digital respectivement.Wristwatches whose case houses a chronograph module or movement provided with a quartz oscillator allow the wearer to carry out measurements of a precision which varies according to the type of display, i.e. on the order of a tenth or hundredth of a second, depending on whether this display is analog or digital respectively.

CH-667,771 décrit une montre chronographe comprenant un mouvement d'horlogerie usuel central entraínant des aiguilles d'heures, de minutes et de secondes et un mouvement autonome chronographe présentant un garde-temps et au moins un indicateur entraíné par un moteur électrique. Les organes du mouvement chronographe sont agencés à la périphérie du mouvement usuel ou mouvement de base. Chaque mouvement comporte son propre régulateur oscillant à la même fréquence que l'autre. Le mouvement chronographe est pourvu d'une cage indépendante en forme de cloche coiffant le mouvement d'horlogerie de base et ceinturant ce dernier. Les deux mouvements sont reliés au moyen d'une plaque interposée entre eux. CH-667,771 describes a chronograph watch comprising a clockwork movement usual central driving the hour, minute and second hands and a autonomous chronograph movement with a timepiece and at least one indicator driven by an electric motor. Movement organs chronograph are arranged at the periphery of the usual movement or movement of based. Each movement has its own regulator oscillating at the same frequency than the other. The chronograph movement is provided with a cage independent bell-shaped cap on the basic watch movement and girdling the latter. The two movements are connected by means of a plate interposed between them.

Cette construction a pour but de réaliser une montre-chronographe électrique à bon compte. En revanche, la précision reste très discutable, l'aiguille chronographe battant le 1/5 de seconde ( ce qui correspond à un oscillateur à 18'000 alternances par heure). En outre, ce document ne livre à l'homme du métier aucun enseignement quant à l'agencement des organes du module ou mouvement chronographe, dans l'hypothèse où ce module serait mécanique, ni à la coopération entre un module de ce type et le mouvement de base horaire usuel.The purpose of this construction is to produce an electric chronograph watch with good account. On the other hand, the precision remains very questionable, the chronograph hand beating 1/5 of a second (which corresponds to an oscillator at 18,000 vibrations per hour). In addition, this document does not provide the skilled person with any instruction. as for the arrangement of the organs of the module or chronograph movement, in the hypothesis that this module would be mechanical, nor to the cooperation between a module of this type and the usual hourly basic movement.

Or, cet agencement et cette coopération posent des problèmes complexes de fiabilité et de faisabilité sur les plans aussi bien technique qu'esthétique - que l'utilisation d'un chronographe à quartz ne résout nullement, mais en fait l'économie en les contournant - à tel point que l'homme du métier a toujours été dissuadé d'envisager ledit agencement et ladite coopération et a fortiori de s'assigner la tâche de les réaliser.However, this arrangement and this cooperation pose complex reliability problems. and both technically and aesthetically feasible - that the use of a quartz chronograph does not solve anything, but saves money by bypassing - so much so that a person skilled in the art has always been dissuaded from considering said arrangement and said cooperation and a fortiori to assign the task of them achieve.

De fait, la précision de mesure des chronographes mécaniques offerts actuellement sur le marché est, pour la plupart, de l'ordre de 0.125 seconde, le balancier correspondant oscillant à 28'800 alternances par heure, et plus rarement, pour certains autres chronographes mécaniques, sensiblement plus chers, dont le balancier oscille à 36'000 alternances par heure, de l'ordre de 0.1 seconde. Cette précision de mesure ne peut être augmentée avec les chronographes mécaniques disposant d'une base de temps commune pour la partie horaire et la partie chronographe, cela pour plusieurs raisons. L'utilisation pour la partie horaire d'un balancier oscillant à une fréquence supérieure modifierait la vitesse de déroulement du ressort de barillet et diminuerait la durée de la réserve de marche du mouvement. De plus, un ensemble comprenant roue d'échappement, ancre, ellipse, pivot de balancier, qui serait soumis en continu à une telle condition de fonctionnement, accuserait après quelques mois déjà une usure importante provoquant inévitablement une altération irréversible du bon fonctionnement du mouvement. Il convient de souligner également qu'à haute fréquence, la transmission d'énergie du barillet au balancier-spiral à travers le rouage et l'échappement pose, en utilisation continue, des problèmes dont la solution impliquerait fort probablement la mise en oeuvre de moyens complexes et tout de même non exempts d'aléas. Ainsi, en guise d'illustration, un balancier oscillant à haute fréquence possède une amplitude plus faible que le même balancier oscillant à une fréquence plus basse. De ce fait, il sera plus sensible aux variations du couple moteur du ressort de barillet et n'offrira une stabilité de marche que pendant la période où la courbe de variation dudit couple moteur du ressort est linéaire.In fact, the measurement accuracy of mechanical chronographs currently offered on the market is, for the most part, of the order of 0.125 seconds, the pendulum correspondent oscillating at 28,800 vibrations per hour, and more rarely, for certain other significantly more expensive mechanical chronographs, including the pendulum oscillates at 36,000 vibrations per hour, of the order of 0.1 seconds. This measurement accuracy cannot be increased with mechanical chronographs having a common time base for the hourly part and the part chronograph, for several reasons. The use for the hourly part of a pendulum oscillating at a higher frequency would modify the speed of unwinding of the barrel spring and would decrease the duration of the power reserve of the movement. In addition, a set comprising escape wheel, anchor, ellipse, pivot of pendulum, which would be continuously subject to such an operating condition, after a few months would already show significant wear and tear, inevitably causing an irreversible alteration of the proper functioning of the movement. It is right to also underline that at high frequency, the transmission of energy from the barrel to balance-spring through the gear train and exhaust poses, in continuous use, problems the solution of which would most likely involve the implementation of complex means and all the same not free from hazards. So by way of illustration, a high frequency oscillating balance has a greater amplitude weak than the same pendulum oscillating at a lower frequency. Because of this, it will more sensitive to variations in the mainspring torque and will not provide walking stability only during the period when the variation curve of said torque spring motor is linear.

Dans le prolongement de ces difficultés s'inscrivent celles que soulèvent les questions de coûts et d'esthétique. D'une part, on sait qu'une pièce d'horlogerie, plus particulièrement une montre-bracelet abritant un dispositif comportant un mouvement de base horaire et un mouvement chronographe "tout mécanique", est en principe classée dans le haut de gamme. Son prix est donc élevé, alors même que la précision de son mouvement chronographe est médiocre, n'atteignant pas même celle d'un mouvement chronographe à quartz à affichage digital de bas de gamme. D'autre part, on conçoit que la réalisation d'une pièce d'horlogerie abritant un double-mouvement, horaire et chronographe, tous deux mécaniques, confronte le manufacturier à un délicat problème d'encombrement ou de volume de la pièce, problème qui, à défaut de solution, se traduira par une inesthétique susceptible de compromettre le succès commercial de la montre. Une solution qui vient à l'esprit consisterait à miniaturiser les organes composant le chronographe mécanique. Mais en servant l'esthétique, elle irait en revanche à l'encontre de l'objectif du meilleur coût et soulèverait certainement des difficultés techniques majeures. La choisir et l'appliquer ne serait donc pas sans risques techniques et commercial. Ces risques apparaissant suffisamment dissuasifs pour inviter l'homme du métier à imaginer et investiguer d'autres pistes de solutions aux fins de réaliser le dispositif avec un rapport qualité / prix aussi avantageux que possible.As an extension of these difficulties, there are those raised by cost and aesthetic issues. On the one hand, we know that a timepiece, more particularly a wristwatch housing a device comprising a movement hourly basis and a "fully mechanical" chronograph movement, is in principle classified in the high range. Its price is therefore high, even though the precision of its chronograph movement is mediocre, not reaching even that of a quartz chronograph movement with low-end digital display. On the other hand, it is understandable that the production of a timepiece housing a double movement, time and chronograph, both mechanical, confronts the manufacturer with a delicate problem of size or volume of the part, problem which, in the absence of solution, will result in an unsightly likely to jeopardize the commercial success of the watch. A solution that comes to mind would consist in miniaturizing the organs composing the mechanical chronograph. But by serving the aesthetic, it would however go against the objective of the best cost and would certainly raise major technical difficulties. Choose it and applying it would therefore not be without technical and commercial risks. These risks appearing sufficiently dissuasive to invite the skilled person to imagine and investigate other possible solutions in order to realize the device with a value for money as advantageous as possible.

Le but de la présente invention est de proposer un dispositif qui pallie l'inconvénient du manque de précision tout en assurant, en outre, une lecture véritablement fiable quelle que soit la caractéristique du régulateur choisi, donc de la précision prévue, et excluant toutes perturbations (exposées plus haut) sur la partie horaire des mouvements du dispositif. The object of the present invention is to provide a device which overcomes the disadvantage lack of precision while ensuring, moreover, a truly reliable reading whatever the characteristic of the regulator chosen, therefore the expected accuracy, and excluding all disturbances (set out above) on the hourly part of the device movements.

Ce but est atteint grâce aux moyens définis dans la revendication indépendante 1, les revendications dépendantes portant sur des moyens permettant des réalisations préférées de l'invention et, dans le droit fil du rapport qualité / prix évoqué plus haut, à bon compte.This object is achieved by the means defined in independent claim 1, the dependent claims relating to means allowing realizations preferred of the invention and, in line with the quality / price ratio mentioned above, to good account.

Les tests effectués sur des prototypes selon l'invention équipés d'un chronographe dont le balancier oscillait à 360'000 alternances par heure ont permis d'établir qu'une précision du centième de seconde était assurée même en utilisation continue d'au moins trente minutes. En d'autres termes, le dispositif selon l'invention permet d'offrir une pièce d'horlogerie haut de gamme véritablement "tout mécanique", dont la précision du chronographe n'a rien à envier à un chronographe à quartz de haute qualité.Tests carried out on prototypes according to the invention equipped with a chronograph whose pendulum oscillated at 360,000 vibrations per hour established that a accuracy of a hundredth of a second was ensured even in continuous use of at least minus thirty minutes. In other words, the device according to the invention makes it possible to offer a truly "entirely mechanical" high-end timepiece, including Chronograph precision has nothing to envy to a high quartz chronograph quality.

Une forme d'exécution du dispositif va être décrite en détail ci-après, à titre d'exemple non limitatif, à l'appui des dessins annexés dans lesquels

  • la figure 1 est une vue de dessus d'une pièce d'horlogerie sous forme de montre-bracelet incorporant un dispositif selon l'invention,
  • la figure 2 est une représentation en perspective du dispositif à l'état non assemblé,
  • la figure 3 est une représentation en perspective du seul module chronographe,
  • la figure 4 est une représentation en perspective de l'organe régulateur, du rouage et du barillet du module chronographe,
  • la figure 5 est une représentation en perspective d'un système de renvoi de minuterie et de petite seconde du module chronographe,
  • la figure 6 est une représentation en perspective d'un système de remontage du module chronographe,
  • la figure 7 est une représentation en perspective d'une réserve de marche du module chronographe
    et
  • la figure 8 montre une variante apportée à l'exemple de la forme d'exécution représentée aux figures 1 à 7.
    • An embodiment of the device will be described in detail below, by way of nonlimiting example, in support of the accompanying drawings in which
  • FIG. 1 is a top view of a timepiece in the form of a wristwatch incorporating a device according to the invention,
  • FIG. 2 is a perspective representation of the device in the unassembled state,
  • FIG. 3 is a perspective representation of the only chronograph module,
  • FIG. 4 is a perspective representation of the regulating member, the train and the barrel of the chronograph module,
  • FIG. 5 is a perspective representation of a timer and small second return system of the chronograph module,
  • FIG. 6 is a perspective representation of a winding system of the chronograph module,
  • FIG. 7 is a perspective representation of a power reserve of the chronograph module
    and
  • FIG. 8 shows a variant brought to the example of the embodiment shown in FIGS. 1 to 7.

    • Le dispositif selon l'invention trouve avantageusement sa place dans une montre-bracelet chronographe (non spécifiquement référencée), comme représenté à la figure 1. Cette montre présente: à 2 heures, une couronne poussoir 1 permettant de remonter un barillet du module chronographe du dispositif - module ci après dénommé module chronographe autonome MCA - et de commander les fonctions départ et arrêt du module chronographe autonome MCA, à 3 heures, une couronne de remontoir 2 du mouvement horaire du dispositif, mouvement ci-après dénommé mouvement de base MB, et à 4 heures un bouton poussoir 3 mis en action pour la remise à zéro et du retour à la volée du module chronographe autonome MCA. La montre-chronographe permet l'affichage de l'heure courante à l'aide d'une aiguille des heures 4, d'une aiguille des minutes 5 et d'une aiguille de petite seconde 6 disposée à trois heures. Elle permet également d'afficher la mesure d'un temps écoulé à l'aide d'un compteur de trente minutes 7, placé à neuf heures et muni d'une aiguille 8, d'une trotteuse centrale de chronographe 9 et d'un compteur des centièmes de secondes 10 situé à six heures et muni d'une aiguille 11. Un compteur de réserve de marche 12 du module chronographe autonome MCA muni d'une aiguille 13 et situé à douze heures sert à vérifier l'autonomie dudit module jusqu'au prochain remontage. Les graduations de ces différents compteurs sont portées sur un cadran 14; en particulier les centièmes de seconde correspondent à cent marques matérialisées sur une règle circulaire, l'aiguille 11 effectuant une rotation de 360° par seconde pour assurer une lecture confortable et précise de l'intervalle de temps.The device according to the invention advantageously finds its place in a wristwatch chronograph (not specifically referenced), as shown in figure 1. This watch has: at 2 o'clock, a pusher crown 1 allowing remount a barrel of the chronograph module of the device - module below called MCA autonomous chronograph module - and to control the functions start and stop of the MCA autonomous chronograph module, at 3 o'clock, a crown winding 2 of the time movement of the device, movement hereinafter referred to as basic movement MB, and at 4 o'clock a push button 3 activated for the reset and return to the fly of the MCA autonomous chronograph module. The chronograph watch allows the display of the current time using a hand hours 4, a minute hand 5 and a small second hand 6 arranged at three o'clock. It also displays the measurement of an elapsed time using a thirty-minute counter 7, placed at nine o'clock and fitted with a hand 8, a central second hand chronograph 9 and a hundredths of seconds counter 10 located at six o'clock and fitted with a hand 11. A power reserve counter 12 of the MCA autonomous chronograph module fitted with a hand 13 and located at twelve hours is used to check the autonomy of said module until the next reassembly. The graduations of these different counters are carried on a dial 14; in particular hundredths of a second correspond to a hundred marks materialized on a ruler circular, the needle 11 rotating 360 ° per second to ensure comfortable and precise reading of the time interval.

    La fig. 2 est une vue en perspective montrant le principe d'assemblage du module chronographe autonome MCA avec le mouvement de base MB, prévoyant des éléments de centrage et des organes de fixation. Un planche de base 76 du module chronographe autonome MCA présente deux trous (non visibles et non référencés) dans lesquels sont chassés des pieds cylindriques 16,17 destinés à s'engager dans des trous de pieds de cadran 18,19 d'une platine 15 du mouvement de base MB, aux fins d'un positionnement angulaire correct du module MCA par rapport au mouvement MB. Des moyens de fixation relient le mouvement de base MB et le module chronographe autonome MCA à leur périphérie. Selon l'exemple, des vis 20 A, 21 A passent par des trous (non visibles et non référencés) pratiqués dans la planche 76 et sont vissées dans des trous correspondants taraudés 20, 21 de la platine 15. Sont encore représentés sur cette figure 2, d'une part, sur le module chronographe autonome MCA, se dégageant de son flanc, une tige poussoir 1 A destinée à recevoir la couronne poussoir 1 (figure 1) et, émergeant de sa face de dessus, un arbre 71 du mobile des minutes, un arbre 67 du mobile des secondes, un arbre 61 du mobile des centièmes de seconde et un arbre 88 de la petite seconde, et d'autre part, sur le module de base MB, se dégageant de son flanc, une tige poussoir 2 B destinée à recevoir la couronne de remontoir 2 (figure 1) et, émergeant de sa face de dessus, au centré, une roue 86 du mobile des secondes et une roue 77 du mobile des minutes.Fig. 2 is a perspective view showing the assembly principle of the module MCA standalone chronograph with the basic MB movement, providing centering elements and fasteners. A basic board 76 of the module MCA standalone chronograph has two holes (not visible and not referenced) in which are driven cylindrical feet 16,17 intended to engage in holes in the dial feet 18.19 of a plate 15 of the basic movement MB, aux purposes of correct angular positioning of the MCA module relative to the movement MB. Fixing means connect the basic movement MB and the module MCA autonomous chronograph at their periphery. According to the example, screws 20 A, 21 A pass through holes (not visible and not referenced) made in plate 76 and are screwed into corresponding threaded holes 20, 21 of the plate 15. Are still shown in this figure 2, on the one hand, on the chronograph module autonomous MCA, emerging from its side, a 1 A push rod intended to receive the pusher ring 1 (Figure 1) and, emerging from its top face, a shaft 71 of the minute mobile, a shaft 67 of the second mobile, a tree 61 of the mobile hundredths of a second and a tree 88 of the small second, and secondly, on the basic module MB, emerging from its side, a push rod 2 B intended for receive the winding crown 2 (figure 1) and, emerging from its top face, at centered, a wheel 86 of the seconds mobile and a wheel 77 of the minutes mobile.

    La fig. 3 est une vue en perspective des deux mouvements à l'état assemblé, montrant essentiellement le module chronographe autonome MCA coiffant le mouvement de base MB (visualisé principalement par sa platine 15 et sa tige de remontoir 2 B) et illustrant la disposition et la conformation remarquables et originales des principaux organes et éléments du module chronographe autonome MCA sur sa planche de base 76. Cette disposition extrêmement ramassée et compacte résulte d'une exploitation optimale des volumes, qui épargne une miniaturisation coûteuse desdits organes et éléments sans sacrifier l'esthétique, cette conception et construction permettant de limiter les dimensions du dispositif à l'état assemblé à des valeurs très réduites. Selon la forme d'exécution décrite, ces valeurs sont de l'ordre de 7.75 mm (hauteur) et de 30 mm (diamètre hors tout), les dimensions du seul module chronographe MCA n'excédant des valeurs de l'ordre de 4 mm (hauteur) et 30 mm (diamètre). On comprend que ces dimensions autorisent des habillages du dispositif des plus variés et d'une esthétique remarquable et réussie. Fig. 3 is a perspective view of the two movements in the assembled state, essentially showing the MCA autonomous chronograph module covering the basic movement MB (mainly visualized by its plate 15 and its rod winder 2 B) and illustrating the remarkable and original arrangement and conformation of the main organs and elements of the MCA autonomous chronograph module on its base board 76. This extremely compact and compact arrangement results optimal use of volumes, which saves costly miniaturization said organs and elements without sacrificing aesthetics, this design and construction making it possible to limit the dimensions of the device in the assembled state to very small values. Depending on the embodiment described, these values are of the order 7.75 mm (height) and 30 mm (overall diameter), the dimensions of the only MCA chronograph module not exceeding values of the order of 4 mm (height) and 30 mm (diameter). We understand that these dimensions allow dressings of the device of the most varied and of a remarkable and successful aesthetic.

    Pour réduire davantage encore la hauteur du mouvement chronographe, on peut envisager de disposer les éléments - sur lesquels on reviendra en détail plus loin (notamment organes régulateurs, barillets, rouages respectifs, réserve de marche, leviers, systèmes de remontage) - sur des ponts agencés de manière adéquate, à partir d'une platine unique, les mouvements de base et chronographes étant alors imbriqués l'un dans l'autre, cela sans entraver le bon fonctionnement du module chronographe selon les processus qui vont être décrits ci-après, mais en renchérissant les coûts de fabrication.To further reduce the height of the chronograph movement, you can consider arranging the elements - which we will come back to in detail later (in particular regulatory bodies, barrels, respective cogs, power reserve, levers, winding systems) - on suitably arranged bridges, from a single stage, the basic movements and chronographs then being nested one inside the other, without hampering the proper functioning of the module chronograph according to the processes which will be described below, but in increasing manufacturing costs.

    Le module chronographe autonome MCA est pourvu de son propre barillet 22 et de son propre organe régulateur comprenant notamment un balancier 23. Cette caractéristique supprime toute prise de force sur le mouvement de base MB et permet d'arrêter le balancier 23 sans perturber le balancier-spiral du mouvement de base MB.The MCA autonomous chronograph module has its own barrel 22 and its own regulating body including in particular a pendulum 23. This feature removes any PTO on the base MB movement and allows the balance 23 to be stopped without disturbing the balance-spring of the movement of MB base.

    Le chronographe MCA est enclenché et déclenché par courte pression sur la tige de poussoir 1 A, c'est-à-dire sur la couronne 1. Chacune de ces pressions produit un déplacement en direction du centre du chronographe MCA d'une plaque 24 comportant des rainures en forme d'ouvertures oblongues 25, 26, ce déplacement, guidé par des vis 27, 28 coopérant avec lesdites rainures, mettant simultanément en action un bec 29. Lorsque la pression est relâchée, la plaque 24 et le bec 29 reprennent leur position de départ sous l'action respectivement d'un ressort-fil 40 et d'un ressort de rappel 41.The MCA chronograph is switched on and off by short pressure on the push-button 1 A, that is to say on the crown 1. Each of these pressures produces a movement towards the center of the MCA chronograph of a plate 24 comprising grooves in the form of oblong openings 25, 26, this displacement, guided by screws 27, 28 cooperating with said grooves, simultaneously bringing into action a spout 29. When the pressure is released, the plate 24 and the spout 29 return to their starting position under the action of a wire spring 40 and a return spring 41.

    En partant d'une position de départ (chronographe arrêté, c'est-à-dire à zéro), l'extrémité du bec 29, pivotant autour d'une goupille 30, entre en contact avec un flanc d'une aile centrale d'une came 31 et fait tourner ladite came 31 autour d'un arbre 32 d'un angle défini par une butée 33. Un ergot 34 entraíne alors un levier 35, un ergot 39 fait pivoter un lanceur 36 autour de son arbre 37, et une lame-ressort 38 se dégage tangentiellement de la face extérieure du balancier 23. Ce faisant, le ressort 38 fournit au balancier 23 une impulsion de départ pour le mettre en mouvement. Une nouvelle pression sur la couronne 1 conduit à l'arrêt du chronographe au terme d'un processus identique mais inverse (position correspondant à celle qui est illustrée à la figure 3 ( balancier en mouvement)), la lame-ressort 38 entrant cette fois-ci tangentiellement en contact avec la face extérieure du balancier 23 et immobilise ce dernier.Starting from a starting position (chronograph stopped, i.e. at zero), the end of the spout 29, pivoting around a pin 30, comes into contact with a side of a central wing of a cam 31 and turns said cam 31 around a shaft 32 at an angle defined by a stop 33. A lug 34 then drives a lever 35, a lug 39 rotates a launcher 36 around its shaft 37, and a leaf spring 38 tangentially emerges from the outer face of the balance 23. In doing so, the spring 38 provides the balance 23 with a starting impulse to set it in movement. Pressing the crown 1 again stops the chronograph at the end of an identical but reverse process (position corresponding to that illustrated in FIG. 3 (pendulum in motion)), the leaf spring 38 entering this time tangentially into contact with the face outside of the pendulum 23 and immobilizes the latter.

    Une pression exercée sur le bouton poussoir 3 (figure 1) donne lieu à une remise à zéro du module chronographe MCA.Pressing the push button 3 (Figure 1) gives rise to a reset zero of the MCA chronograph module.

    Cette remise à zéro se fait par action d'un marteau unique 48. La pression précitée sur le bouton 3 fait pivoter une bascule 42 et par conséquent son bec 44 autour d'un axe de pilier 43, ce qui a pour effet d'entraíner un inverseur 45 avec sa goupille 46, cette dernière commandant à son tour un levier 47 qui fait pivoter le marteau 48 dont les trois becs (non référencés) viennent heurter des coeurs 49, 50, 51 montés respectivement sur les mobiles des compteurs des minutes, des secondes et des centièmes de seconde (voir aussi figure 4) et provoquent la mise à zéro du module chronographe MCA.This reset is done by the action of a single hammer 48. The aforementioned pressure on the button 3 rotates a rocker 42 and consequently its beak 44 around a pillar axis 43, which has the effect of driving an inverter 45 with its pin 46, the latter in turn controlling a lever 47 which rotates the hammer 48 whose the three nozzles (not referenced) strike hearts 49, 50, 51 mounted respectively on the minutes, seconds and hour counters hundredths of a second (see also Figure 4) and cause the module to zero MCA chronograph.

    Lors de la pression sur la bascule 42, le bec 44 reste en contact avec l'inverseur 45 pendant environ les deux tiers de l'espace angulaire décrit par la bascule 42 autour de l'axe de pilier 43, puis ledit bec 44 se sépare tangentiellement de l'extrémité de l'inverseur 45 et l'inverseur 45 revient à son point de départ sous l'action d'un ressort de rappel enroulé autour de l'axe de pivotement dudit inverseur 45 (sur la figure 3, ni ce ressort de rappel, ni cet axe de pivotement ne sont référencés, l'axe de pivotement étant par ailleurs caché par l'inverseur 45).When the lever 42 is pressed, the spout 44 remains in contact with the reverser 45 for about two-thirds of the angular space described by flip-flop 42 around of the pillar axis 43, then said spout 44 separates tangentially from the end of the inverter 45 and the inverter 45 returns to its starting point under the action of a spring return wrapped around the pivot axis of said inverter 45 (in FIG. 3, nor this return spring, nor this pivot axis are referenced, the pivot axis being also hidden by the inverter 45).

    Le marteau 48 est fixé au pont de rouage 52 par une vis 53 et une rondelle excentrique 54. La rondelle excentrique 54 permet d'ajuster le réglage du marteau 48 de manière que les trois becs dudit marteau 48 appuient simultanément sur les trois coeurs 49, 50 et 51, la remise à zéro du module chronographe MCA s'effectuant ainsi juste avant que le bec 44 ne quitte l'inverseur 45.The hammer 48 is fixed to the gear train 52 by a screw 53 and a washer eccentric 54. The eccentric washer 54 makes it possible to adjust the setting of the hammer 48 so that the three nozzles of said hammer 48 press simultaneously on the three cores 49, 50 and 51, thus resetting the MCA chronograph module to zero just before the spout 44 leaves the reverser 45.

    Les conséquences lors de la remise à zéro du module chronographe MCA diffèrent selon que le balancier 23 est arrêté ou en mouvement. The consequences when resetting the MCA chronograph module differ depending on whether the pendulum 23 is stopped or in motion.

    Si le balancier 23 est arrêté, la lame-ressort 38 est en contact avec le balancier 23 et la friction exercée par les arbres 61, 67, 71 (figures 2 et 4) sur le rouage n'a pas d'influence sur le balancier 23.If the balance 23 is stopped, the leaf spring 38 is in contact with the balance 23 and the friction exerted by the shafts 61, 67, 71 (Figures 2 and 4) on the cog did not influence on the pendulum 23.

    Par contre, si le balancier est en mouvement, la lame-ressort 38 n'est pas en contact avec le balancier 23 et la friction exercée par les arbres 61, 67 et 71 sur le rouage aura tendance à freiner le balancier 23.On the other hand, if the balance is in motion, the leaf spring 38 is not in contact with the balance 23 and the friction exerted by the shafts 61, 67 and 71 on the gear train will tend to brake the pendulum 23.

    Lors du relâchement de la pression sur la bascule 42, le bec 44, maintenu par un ressort de rappel 56, peut pivoter autour d'une goupille 55 pour éviter l'inverseur 45 et permettre à la bascule 42 de reprendre sa position de repos sous l'effet d'un ressort de rappel 57.When the pressure is released on the rocker 42, the spout 44, held by a return spring 56, can pivot around a pin 55 to avoid the reverser 45 and allow the rocker 42 to return to its rest position under the effect of a spring recall 57.

    Le principe de fonctionnement décrit ci-dessus sert donc à éviter, lors de la remise à zéro du module chronographe autonome MCA et le balancier 23 étant en mouvement, tout arrêt dudit balancier dû à une friction prolongée des arbres 61, 67 et 71.The operating principle described above therefore serves to avoid, when handing over zero of the MCA autonomous chronograph module and the balance 23 being in movement, any stopping of the pendulum due to prolonged friction of the shafts 61, 67 and 71.

    Ainsi, une même pression exercée sur le bouton pressoir 3 (figure 1) provoque, quand le balancier 23 est arrêté, une remise à zéro du module chronographe MCA et, quand le balancier 23 est en mouvement, une remise à zéro du module chronographe MCA (opération dénommée retour à la volée) suivi d'un redémarrage automatique d'une nouvelle mesure (sans obligation de presser sur la tige-poussoir 1 A).Thus, the same pressure exerted on the press button 3 (FIG. 1) causes, when the balance 23 is stopped, a reset to the MCA chronograph module and, when the balance 23 is in motion, resetting the chronograph module to zero MCA (operation called back on the fly) followed by an automatic restart of a new measurement (without obligation to press on the push rod 1 A).

    L'ensemble balancier spiral de l'organe régulateur du chronographe est arrêté lorsque ce dernier n'est pas en fonction.The balance spring balance of the chronograph regulator is stopped when the latter is not in operation.

    La fig. 4 est une vue en perspective illustrant la disposition de l'organe régulateur, du rouage et du barillet montés sur la planche de base 76 du module chronographe autonome MCA. Selon l'exemple, dans cette configuration, l'ensemble balancier 23 spiral est dimensionné pour osciller à une fréquence de 360'000 alternances par heure. Fig. 4 is a perspective view illustrating the arrangement of the regulating member, the cog and barrel mounted on the base plate 76 of the chronograph module autonomous MCA. According to the example, in this configuration, the balance assembly 23 hairspring is dimensioned to oscillate at a frequency of 360,000 vibrations per hour.

    Dans la formule : f=12Π M I In the formula: f = 1 2Π M I

    on constate que pour un spiral donné, la fréquence est inversement proportionnelle à la racine carrée du moment d'inertie du balancier dont la formule peut être assimilée à celle d'un cylindre creux : I=12 m(R 2+r 2) Où: m=Πhρ(R 2-r 2) I=12 Πhρ(R 4-r 4) ce qui permet d'écrire : f=12Π M 12 Πhρ(R 4-r 4)

    • f Fréquence [Hz]
    • M Couple élastique du spiral [Nm]
    • I Moment d'inertie du balancier [kg•m2]
    • R rayon extérieur du balancier [m]
    • r rayon intérieur du balancier [m]
    • h épaisseur du balancier [m]
    • p poids spécifique du balancier [kg/m3].
    we note that for a given hairspring, the frequency is inversely proportional to the square root of the moment of inertia of the pendulum whose formula can be assimilated to that of a hollow cylinder: I = 1 2 m ( R 2 + r 2 ) Or: m = Π h ρ ( R 2 - r 2 ) I = 1 2 Π hρ ( R 4 - r 4 ) which allows to write: f = 1 2Π M 1 2 Π h ρ ( R 4 - r 4 )
    • f Frequency [Hz]
    • M Elastic torque of the balance spring [Nm]
    • I Moment of inertia of the balance [kg • m 2 ]
    • R outer radius of the pendulum [m]
    • r inside radius of the pendulum [m]
    • h arm thickness [m]
    • p specific weight of the balance [kg / m 3 ].

    En introduisant des valeurs de f, R et r dans cette fonction on constate que si l'on fait passer la fréquence, par exemple de 28'800 à 360'000 alternances par heure, on pourrait diviser le diamètre du balancier par environ cinq. L'expérience montre qu'un balancier trop petit n'assure plus une bonne stabilité de marche et pose des problèmes de réglage. La solution consiste donc à adopter un compromis entre une réduction du diamètre extérieur du balancier, ce qui facilite son intégration dans le module chronographe autonome MCA, et une augmentation du pouvoir d'accélération du spiral défini par son numéro CGS. By introducing values of f, R and r into this function we see that if we do pass the frequency, for example from 28,800 to 360,000 vibrations per hour, we could divide the diameter of the pendulum by about five. Experience shows that pendulum too small no longer ensures good walking stability and poses adjustment issues. The solution therefore consists in adopting a compromise between a reduction of the outer diameter of the balance wheel, which facilitates its integration into the MCA autonomous chronograph module, and increased acceleration power of the hairspring defined by its CGS number.

    Eu égard à ces considérations, on choisira donc un spiral dont les caractéristiques techniques autorisent le choix d'un balancier d'une dimension telle que le régulateur oscille à la fréquence prédéterminée, que l'organe régulateur offre une bonne qualité de réglage et que le balancier puisse être relancé efficacement par la lame-ressort 38.In view of these considerations, we will therefore choose a hairspring whose characteristics techniques allow the choice of a balance of a size such as the regulator oscillates at the predetermined frequency, that the regulating body offers good quality adjustment and that the balance can be relaunched effectively by the leaf spring 38.

    On aperçoit à la figure 4 une ancre 113 et une roue d'échappement 58, ces éléments pouvant être choisis parmi des assortiments existants. Selon une réalisation du dispositif décrit à titre d'exemple, une roue 59, chassée sur l'arbre de la roue d'échappement 58 est choisie de sorte qu'elle tourne à une vitesse de 2,5 tours par seconde, le balancier 23 oscillant, selon l'exemple, à 50 Hz (soit 360'000 alternances par heure). Une roue 60 du mobile des centièmes de seconde tourne dans le sens horaire à la vitesse d'un tour par seconde. Une roue (non visible sur la figure, car cachée par le coeur 51), solidaire de la roue 60, est montée sur l'arbre 61 du mobile des centièmes de seconde et engrène avec une roue 62 chassée sur un pignon 63, ce dernier engrenant avec une roue 64. Une roue 65 du mobile des secondes tourne dans le sens horaire à la vitesse d'un tour par minutes grâce à un inverseur 66 qui la relie à la roue 64. Une roue 84 (représentée à la figure 5) cachée par le coeur 50 et solidaire de la roue 65 est montée sur l'arbre 67 du mobile des secondes. Cette roue 84 engrène avec une roue 68 chassée sur un arbre solidaire d'une roue 69 qui entraíne une roue 70 montée sur l'arbre 71 du mobile des minutes. La roue 70 tourne dans le sens horaire à la vitesse de un tour en trente minutes, elle engrène avec une roue 72 chassée sur un arbre 73 solidaire d'une roue 74 qui engrène avec une couronne dentée 75 du barillet 22, ce dernier se déroulant sous l'action du ressort de barillet (non représenté) dans le sens horaire à la vitesse de un tour en 29.7 minutes.

    Figure 00110001
    FIG. 4 shows an anchor 113 and an escape wheel 58, these elements being able to be chosen from existing assortments. According to an embodiment of the device described by way of example, a wheel 59, driven onto the shaft of the escape wheel 58 is chosen so that it rotates at a speed of 2.5 revolutions per second, the balance 23 oscillating, according to the example, at 50 Hz (i.e. 360,000 vibrations per hour). A wheel 60 of the hundredths of a second mobile spins clockwise at the speed of one revolution per second. A wheel (not visible in the figure, because hidden by the heart 51), integral with the wheel 60, is mounted on the shaft 61 of the hundredths of a second mobile and meshes with a wheel 62 driven on a pinion 63, the latter meshing with a wheel 64. A wheel 65 of the seconds wheel turns clockwise at the speed of one revolution per minute thanks to an inverter 66 which connects it to the wheel 64. A wheel 84 (shown in FIG. 5) hidden by the heart 50 and secured to the wheel 65 is mounted on the shaft 67 of the seconds mobile. This wheel 84 meshes with a wheel 68 driven on a shaft secured to a wheel 69 which drives a wheel 70 mounted on the shaft 71 of the minutes mobile. The wheel 70 rotates clockwise at the speed of one revolution in thirty minutes, it meshes with a wheel 72 driven on a shaft 73 secured to a wheel 74 which meshes with a ring gear 75 of the barrel 22, the latter taking place under the action of the barrel spring (not shown) clockwise at the speed of one revolution in 29.7 minutes.
    Figure 00110001

    Dans un mouvement mécanique, le ressort de barillet est généralement calculé pour réaliser environ 7,5 tours. Selon la forme d'exécution décrite, pour des raisons de gain de place, le ressort de barillet est dimensionné pour permettre au barillet d'effectuer environ six tours, ce qui équivaut à une réserve de marche de 178,2 minutes. Mais comme expliqué supra, l'utilisation d'un organe régulateur dont l'ensemble balancier spiral oscillant à haute fréquence ( 360'000 alternances par heure) réduit l'utilisation du couple moteur du ressort de barillet à la période durant laquelle la fonction Δ couple moteur / Δ temps est linéaire (voir diagramme ci-dessus), la réserve de marche utile du module chronographe autonome MCA est de l'ordre de cent vingt minutes.In a mechanical movement, the barrel spring is generally calculated for perform around 7.5 laps. Depending on the embodiment described, for reasons of space saving, the barrel spring is dimensioned to allow the barrel perform approximately six laps, which equates to a power reserve of 178.2 minutes. But as explained above, the use of a regulatory body including the high-frequency oscillating balance spring assembly (360,000 vibrations per hour) reduces the use of the mainspring torque to the period during which the function Δ engine torque / Δ time is linear (see diagram above), the useful power reserve of the MCA autonomous chronograph module is around one hundred and twenty minutes.

    Lors d'une mesure à l'aide d'un chronographe mécanique usuel le rouage de la partie chronographe doit être débrayé du rouage de la partie horaire. Pour éviter le flottement des aiguilles de chronographe il est indispensable d'immobiliser les roues des mobiles porteurs desdites aiguilles. Avec le module chronographe mécanique autonome MCA selon la présente invention, cette opération d'immobilisation n'est pas nécessaire, car comme cela se dégage de le description plus haut du rouage du module chronographe autonome MCA, le train d'engrenage reste en permanence contraint par le ressort de barillet du fait qu'il n'y a pas de système de débrayage et que sur tous les mobiles porteurs de plusieurs roues (comme par exemple les roues 84 et 65 du mobile des secondes ou encore la roue d'échappement 58 et la roue 59 montées sur le même arbre), ces dernières sont solidaires. Ces caractéristiques garantissent une reprise permanente du jeu des engrenages.During a measurement using a usual mechanical chronograph the cog of the part The chronograph must be disengaged from the cog in the hourly part. To avoid the floating chronograph hands it is essential to immobilize the wheels mobiles carrying said needles. With the mechanical chronograph module autonomous MCA according to the present invention, this immobilization operation is not necessary, because as it emerges from the above description of the workings of the MCA autonomous chronograph module, the gear train remains permanently constrained by the barrel spring due to the fact that there is no clutch release system and than on all mobiles with more than one wheel (such as wheels 84 and 65 of the seconds mobile or the escape wheel 58 and the wheel 59 mounted on the same shaft), the latter are integral. These characteristics guarantee a permanent resumption of the play of the gears.

    De plus, sur un chronographe usuel, les opérations d'embrayage du rouage de la partie chronographe avec le rouage de la partie horaire (mouvement de base MB ou renvois du mouvement de base situés dans le module chronographe), et/ou de débrayage de ces rouages entre eux, provoque des sauts, en particulier lors de la mise en marche du chronographe, qui peuvent fausser la mesure de plusieurs dixièmes de secondes. Ce défaut est supprimé par la présente invention. Pour effectuer une remise à zéro des aiguilles de compteurs montées sur les arbres 61, 67 et 71 (Figure 4) ces derniers sont montés sur leurs mobiles respectifs avec un système de friction connu (par exemple, par une rondelle élastique, par lanternage, etc.).In addition, on a standard chronograph, the clutch operations of the gear train of the chronograph part with the cog of the time part (basic movement MB or basic movement references located in the chronograph module), and / or declutching these cogs between them, causes jumps, especially when starting the chronograph, which can distort the measurement of several tenths of seconds. This defect is eliminated by the present invention. For reset the meter needles mounted on the shafts 61, 67 and 71 (Figure 4) the latter are mounted on their respective mobiles with a known friction system (for example, by an elastic washer, by lanterning, etc.).

    Comparativement à un chronographe mécanique comportant un module chronographe additionnel usuel dans lequel on peut modifier le rouage et la disposition des compteurs, la présente invention donne en plus la possibilité de modifier la fréquence d'oscillation du balancier spiral, la résolution de mesure et la réserve de marche du module chronographe autonome MCA. De manière générale, la fréquence d'oscillation fournie par le régulateur du module chronographe autonome MCA est égale à N fois la fréquence d'oscillation fournie par l'organe régulateur du mouvement de base MB, à titre d'exemple, pour un mouvement de base d'une fréquence de 28'800 alternances par heure, N peut être choisi à 12,50, de sorte que le module chronographe autonome MCA batte le centième de seconde. Ces caractéristiques permettent de réaliser une gamme de produits pratiquement illimitée couvrant tous les secteurs et créneaux économiques, allant de la montre chronographe grand public à celle de haute horlogerie, jusqu'à des produits réservés à des usages professionnels.Compared to a mechanical chronograph with a module usual additional chronograph in which the gear train and the arrangement of the meters, the present invention also gives the possibility of modify the oscillation frequency of the balance spring, the measurement resolution and the power reserve of the MCA autonomous chronograph module. Generally, the oscillation frequency provided by the regulator of the autonomous chronograph module MCA is equal to N times the oscillation frequency supplied by the regulating body of the basic movement MB, for example, for a basic movement of a frequency of 28,800 vibrations per hour, N can be chosen at 12.50, so that the MCA autonomous chronograph module beats the hundredth of a second. These features allow for a practically unlimited range of products covering all sectors and economic niches, ranging from watches consumer chronograph to that of haute horlogerie, up to reserved products for professional use.

    La fig. 5 illustre une des nombreuses façons de transférer les informations horaires, fournies par le mouvement de base MB au travers du module chronographe autonome MCA, aux aiguilles horaires 4, 5 et 6 disposées sur le cadran 14 (figure 1).Fig. 5 illustrates one of the many ways of transferring time information, provided by the basic movement MB through the chronograph module autonomous MCA, with hour hands 4, 5 and 6 arranged on the dial 14 (Figure 1).

    La roue 77 montée sur la chaussée du mouvement de base MB engrène avec un renvoi 78 chassé sur un arbre 79 solidaire des renvois 80, 81. Le renvoi 80 entraíne une chaussée 82 porteuse de l'aiguille des minutes 5 et montée librement sur un tube 85, alors que le renvoi 81 entraíne une roue à canon 83 porteuse de l'aiguille des heures 4.The wheel 77 mounted on the ground of the basic movement MB meshes with a reference 78 driven out on a tree 79 integral with the references 80, 81. The reference 80 drives a carriageway 82 carrying the 5 minute hand and freely mounted on a tube 85, while the reference 81 drives a barrel wheel 83 carrying the needle of hours 4.

    Une roue 86 montée sur l'arbre des secondes du mouvement de base MB engrène avec un renvoi 87 qui entraíne une roue 89 chassée sur un arbre de la petite seconde 88 situé à trois heures. Pour éviter le flottement de l'aiguille de petite seconde 6, un ressort fil (non représenté) peut appuyer à l'intérieur d'une gorge 90 de l'arbre 88 de la petite seconde. A wheel 86 mounted on the seconds shaft of the basic movement MB meshes with a reference 87 which drives a wheel 89 driven on a small shaft second 88 located at three o'clock. To prevent the small needle from floating second 6, a wire spring (not shown) can press inside a groove 90 of tree 88 of the small second.

    Cette disposition permet d'agencer - selon une pratique courante - l'arbre 67 de la trotteuse 9 du chronographe au centre du module MCA (voir aussi figure 4) et offre à l'utilisateur un affichage de l'intervalle de temps mesuré par le module chronographe autonome MCA.This arrangement allows to arrange - according to a common practice - the tree 67 of the second hand 9 of the chronograph in the center of the MCA module (see also Figure 4) and offers the user a display of the time interval measured by the chronograph module autonomous MCA.

    Il va de soi que d'autres dispositions peuvent aisément être imaginées. Ainsi, la figure 8 (comparable avec la figure 2) représente une variante selon laquelle un arbre des secondes 67 B, une chaussée 82 B et une roue à canon 83 B du mouvement de base MB ont été rallongés de manière à traverser une ouverture centrale 115 du module chronographe autonome MCA et à afficher l'heure, la minute et la seconde au centre du cadran 14. Selon cette variante, l'aiguille des secondes du mouvement chronographe autonome MCA est portée par un arbre 88 A agencé à trois heures sur un compteur.It goes without saying that other arrangements can easily be imagined. So the figure 8 (comparable with FIG. 2) represents a variant according to which a tree of seconds 67 B, a carriageway 82 B and a cannon wheel 83 B of the basic movement MB have been extended so as to pass through a central opening 115 of the module MCA stand-alone chronograph with central hour, minute and second display of the dial 14. According to this variant, the seconds hand of the movement MCA autonomous chronograph is carried by an 88 A shaft arranged at three o'clock a counter.

    La fig. 6 est une représentation en perspective du système de remontage du module chronographe autonome MCA monté sur la planche de base 76. Le remontage manuel du barillet 22 s'effectue par rotation de la tige poussoir 1 A, en position de repos, dans le même sens horaire que celui nécessaire au remontage manuel du mouvement mécanique de base MB, nécessaire à une remise en service de ce dernier lorsqu'il n'a pas été porté pendant une période suffisamment longue et que le ressort du barillet est totalement déroulé (mouvement automatique). La tige poussoir 1 A est guidée par un plot 91 et maintenue en place par une lame ressort 92. Une pression exercée depuis le dessous sur l'extrémité d'un ergot 93 libère la tige poussoir 1 A et permet de retirer le mouvement de son boítier représenté à la figure 1 et non référencé, pour autant que la même opération soit effectuée sur la tige de remontoir 2 B (non représenté sur cette figure).Fig. 6 is a perspective representation of the module reassembly system MCA standalone chronograph mounted on the base plate 76. Winding manual of the barrel 22 is effected by rotation of the push rod 1 A, in the rest, in the same clockwise direction as that required for manual winding of the basic mechanical movement MB, necessary for a return to service of this last when it has not been worn for a sufficiently long period and the spring of the barrel is fully unwound (automatic movement). The push rod 1 A is guided by a stud 91 and held in place by a spring leaf 92. A pressure exerted from below on the end of a lug 93 releases the rod push-button 1 A and allows the movement to be removed from its case shown in FIG. 1 and not referenced, provided that the same operation is performed on the rod winder 2 B (not shown in this figure).

    Une roue d'angle 94 actionnée par un carré d'entraínement 95 de la tige poussoir 1 A entraíne un renvoi 96 qui engrène avec une roue d'embrayage 97. Cette roue 97 est en prise avec un renvoi 98 si elle tourne dans le sens antihoraire autour de son arbre 114, ou bien débrayée de ce renvoi 98 si elle tourne dans le sens horaire, l'arbre 114 étant tronqué en forme d'amande. Le renvoi 98 entraíné par la roue d'embrayage 97 lorsqu'elle tourne dans le sens antihoraire, engrène avec un renvoi 99 qui actionne un rochet 100 monté sur une bonde 101 du barillet 22. Le remontage du ressort de barillet se fait donc par rotation du rochet 100 dans le sens horaire (le système d'encliquetage nécessaire à la conservation de l'énergie emmagasinée par le ressort de barillet lors du remontage, connue de l'homme de métier, n'est pas représenté).A corner wheel 94 actuated by a drive square 95 of the push rod 1 A drives a reference 96 which meshes with a clutch wheel 97. This wheel 97 is engaged with a reference 98 if it rotates counterclockwise around its shaft 114, or disengaged from this reference 98 if it rotates clockwise, the shaft 114 being truncated into almond shape. The reference 98 driven by the clutch wheel 97 when it turns counterclockwise, meshes with a reference 99 which activates a ratchet 100 mounted on a bung 101 of the barrel 22. The reassembly of the spring of barrel is therefore rotated by the ratchet 100 clockwise (the system for the conservation of the energy stored by the spring barrel during reassembly, known to those skilled in the art, is not shown).

    La fig. 7 représente en perspective un exemple de réalisation d'un dispositif de réserve de marche du module chronographe autonome MCA, l'information de la réserve de marche étant affichée à midi sur le cadre 14 par l'aiguille 12 (figure 1). Selon la forme d'exécution, il faut qu'un tour de rochet 100 (figure 6), lors du remontage, provoque un déplacement angulaire d'un arbre 102 de réserve de marche autour de son axe, équivalent et de sens inverse à celui engendré par un tour de la couronne 75 du barillet 22 sur le même arbre 102 lors de la marche du module chronographe autonome MCA. Lors du remontage, le rochet 100 et la roue 98 chassée sur l'arbre 106 tournent à la même vitesse et dans le même sens (horaire), une roue 103, solidaire d'un arbre 106, engrène avec une denture extérieure d'une couronne solaire 104, la denture intérieure de la couronne solaire 104 entraíne une roue planétaire 105, la roue 105 étant solidaire d'une roue planétaire 107 qui s'appuie sur une denture intérieure d'une couronne solaire 108 pour faire tourner, dans le sens antihoraire, l'arbre 102 de la réserve de marche d'un angle de 30,375 degrés par tour de rochet 100.Fig. 7 shows in perspective an exemplary embodiment of a device for power reserve of the MCA autonomous chronograph module, information from the power reserve being displayed at midday on the frame 14 by the hand 12 (Figure 1). According to the embodiment, it is necessary that a ratchet turn 100 (FIG. 6), during the winding, causes an angular displacement of a power reserve shaft 102 around its axis, equivalent and opposite to that generated by a revolution of the crown 75 of barrel 22 on the same shaft 102 when the module is running MCA autonomous chronograph. During reassembly, the ratchet 100 and the wheel 98 driven on the shaft 106 rotate at the same speed and in the same direction (clockwise), a wheel 103, integral with a shaft 106, meshes with an external toothing of a solar crown 104, the internal toothing of the solar crown 104 causes a planetary wheel 105, the wheel 105 being integral with a planetary wheel 107 which rests on an inner toothing of a solar crown 108 to rotate, in the direction counterclockwise, shaft 102 of the power reserve at an angle of 30.375 degrees per revolution ratchet 100.

    Lors de la marche du chronographe autonome MCA, la couronne 75 du barillet 22 entraíne une roue 109, cette roue 109 étant solidaire d'un pignon 110 et maintenue par un pont de renvoi 111. Le pignon 111 engrène avec une denture extérieure de la couronne solaire 108, la denture intérieure de la couronne solaire 108 entraíne la roue planétaire 107 solidaire de la roue planétaire 105 qui s'appuie sur la denture intérieure de la couronne solaire 104 pour faire tourner, dans le sens horaire, l'arbre 102 de la réserve de marche d'un angle de 30,375 degrés par tour de couronne 75 du barillet 22.When the MCA autonomous chronograph is running, the crown 75 of the barrel 22 drives a wheel 109, this wheel 109 being integral with a pinion 110 and maintained by a deflection bridge 111. The pinion 111 meshes with an external toothing of the solar crown 108, the internal toothing of the solar crown 108 causes the planetary wheel 107 integral with planetary wheel 105 which rests on the teeth inside of the solar corona 104 to rotate the shaft clockwise 102 of the power reserve at an angle of 30.375 degrees per revolution of the crown 75 barrel 22.

    Selon cette forme de réalisation, la réserve de marche du module chronographe autonome MCA est d'environ cent vingt minutes, le barillet 22 fait un tour en 29,7 minutes, un tour de barillet 22 correspondant à une rotation de 30,375 degrés de l'arbre 102 de la réserve de marche. La réserve de marche approximative du module chronographe autonome MCA correspond donc à un angle de rotation de 127.72 degrés de l'arbre 102 de la réserve de marché.According to this embodiment, the power reserve of the chronograph module autonomous MCA is around one hundred and twenty minutes, the barrel 22 goes around in 29.7 minutes, a barrel revolution 22 corresponding to a rotation of 30.375 degrees from tree 102 of the power reserve. The approximate power reserve of the module MCA autonomous chronograph therefore corresponds to a rotation angle of 127.72 degrees from tree 102 of the market reserve.

    Pour garantir que le remontage ou que la marche du module chronographe autonome MCA ne donnent pas lieu à un déroulement du ressort de barillet au delà des limites définies ci-dessus, on peut prévoir un dispositif de sécurité limitant la rotation de l'arbre 102 de réserve de marche, ce dispositif (non représenté), pouvant consister par exemple à chasser une goupille-butée dans un trou aménagé sur un disque planétaire 112, cette goupille coopérant avec une ouverture oblongue concentrique à l'axe de l'arbre 102 et aménagée sur un couvre-mécanisme.To ensure that the reassembly or the running of the autonomous chronograph module MCA do not give rise to a barrel spring unwinding beyond the limits defined above, it is possible to provide a safety device limiting the rotation of the power reserve shaft 102, this device (not shown), which may consist for example to drive out a stopper pin in a hole arranged on a disc planetary 112, this pin cooperating with an oblong opening concentric with the axis of the shaft 102 and arranged on a mechanism cover.

    Il va de soi que le module chronographe autonome MCA peut être mis en oeuvre en tant que tel, c'est-à-dire non nécessairement associé au mouvement de base MB.It goes without saying that the MCA autonomous chronograph module can be implemented in as such, that is to say not necessarily associated with the basic movement MB.

    Claims (15)

    Dispositif comportant un mouvement horaire usuel ou mouvement de base pourvu d'au moins un indicateur horaire entraíné par un premier barillet relié à un premier rouage et un premier organe régulateur, et un module chronographe pourvu d'au moins un indicateur correspondant entraíné par un second barillet relié à un second rouage et un second organe régulateur, le module chronographe étant autonome du mouvement de base, caractérisé en ce que le module chronographe est exclusivement composé d'éléments mécaniques, que la fréquence d'oscillation fournie par le second régulateur est égale à N fois la fréquence d'oscillation fournie par le premier organe régulateur, le coefficient N pouvant être défini en fonction d'une application spécifique du chronographe, de sorte que tout module chronographe ainsi préalablement défini peut coopérer avec le même mouvement horaire, et en ce que le second régulateur reste constamment en prise avec le second rouage.Device comprising a usual time movement or basic movement provided with at least one time indicator driven by a first barrel connected to a first train and a first regulating member, and a chronograph module provided with at least one corresponding indicator driven by a second barrel connected to a second gear train and a second regulating member, the chronograph module being autonomous from the basic movement, characterized in that the chronograph module is exclusively composed of mechanical elements, that the oscillation frequency provided by the second regulator is equal at N times the oscillation frequency supplied by the first regulating member, the coefficient N being able to be defined as a function of a specific application of the chronograph, so that any chronograph module thus previously defined can cooperate with the same time movement, and in that the second regulator remains constantly engaged with the second gear. Dispositif selon la revendication 1, caractérisée en ce que le coefficient N est défini de sorte que le module chronographe permet une résolution au centième de seconde au moins.Device according to claim 1, characterized in that the coefficient N is defined so that the chronograph module allows a resolution to the hundredth of a second at least. Dispositif selon la revendication 2, caractérisée en ce qu'avantageusement, le coefficient N est au moins égal à 12.50, la fréquence du mouvement de base est de 28'800 alternances par heure et la fréquence du module chronographe est d'au moins 360'000 alternances par heure.Device according to claim 2, characterized in that advantageously, the coefficient N is at least equal to 12.50, the frequency of the basic movement is 28,800 vibrations per hour and the frequency of the chronograph module is at least 360 ' 000 vibrations per hour. Dispositif selon la revendication 2 ou 3, caractérisé en ce qu'un organe indicateur du module chronographe est monté sur un arbre de compteur de centièmes de seconde effectuant une rotation de 360° par seconde, et en ce que ledit organe indicateur est constitué de préférence d'une aiguille permettant la lecture d'intervalles de temps d'un centième de seconde, par coïncidence de ladite aiguille avec une graduation comportant cent repères disposée sur un cadran. Device according to claim 2 or 3, characterized in that an indicator member of the chronograph module is mounted on a hundredths of a second counter shaft rotating 360 ° per second, and in that said indicator member preferably consists of a hand allowing the reading of time intervals of one hundredth of a second, by coincidence of said hand with a graduation comprising one hundred marks arranged on a dial. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que le balancier de l'organe régulateur du chronographe est mis en mouvement ou arrêté par l'intermédiaire d'une lame ressort montée sur un lanceur.Device according to one of claims 1 to 4, characterized in that the balance of the regulating member of the chronograph is set in motion or stopped by means of a spring blade mounted on a launcher. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que l'ensemble balancier spiral de l'organe régulateur du chronographe est arrêté lorsque ce dernier n'est pas en fonction.Device according to one of claims 1 to 5, characterized in that the balance-spring assembly of the regulating member of the chronograph is stopped when the latter is not in operation. Dispositif selon l'une des revendication 1 à 6, caractérisé en ce qu'une pression sur la bascule provoque une remise à zéro du chronographe lorsque le balancier de l'organe régulateur de la partie chronographe est arrêté, et en ce qu'une pression sur la même bascule provoque une remise à zéro ou un retour à la volée du chronographe lorsque le balancier de l'organe régulateur de la partie chronographe est en mouvement.Device according to one of Claims 1 to 6, characterized in that a pressure on the lever causes the chronograph to be reset to zero when the balance of the regulating member of the chronograph part is stopped, and in that a pressure on the same lever causes a reset to zero or a return to the fly of the chronograph when the balance of the regulating organ of the chronograph part is in motion. Dispositif selon la revendication 7, caractérisé en ce que le retour à la volée est suivi d'un redémarrage automatique d'une nouvelle mesure d'un intervalle de temps.Device according to claim 7, characterized in that the return to the fly is followed by an automatic restart of a new measurement of a time interval. Dispositif selon l'une des revendications 1 à 8, caractérisé en ce que la partie chronographe se remonte manuellement et comporte une réserve de marche et un organe indicateur permettant de lire sur le cadran la durée de mesure disponible.Device according to one of claims 1 to 8, characterized in that the chronograph part is wound manually and includes a power reserve and an indicator member making it possible to read the available measurement time on the dial. Dispositif selon l'une des revendications 1 à 9, caractérisé en ce que la partie du chronographe surmonte la partie horaire du mouvement de manière amovible.Device according to one of claims 1 to 9, characterized in that the part of the chronograph surmounts the time part of the movement in a removable manner. Dispositif selon l'une des revendications 1 à 9, caractérisé en ce que les organes de la partie chronographe et de la partie horaire sont disposés sur une seule platine porteuse de l'ensemble des ponts.Device according to one of claims 1 to 9, characterized in that the organs of the chronograph part and of the time part are arranged on a single plate carrying all the bridges. Dispositif selon l'une des revendications 1 à 11, caractérisée en ce les organes du mouvement de base et du module chronographe sont agencés de telle sorte qu'à l'état assemblé, sa hauteur et son diamètre hors tout sont respectivement de l'ordre de 7.75 mm et 30 mm, et de préférence n'excédent pas ces valeurs. Device according to one of claims 1 to 11, characterized in that the organs of the basic movement and of the chronograph module are arranged so that in the assembled state, its overall height and diameter are respectively of the order of 7.75 mm and 30 mm, and preferably does not exceed these values. Montre-bracelet dont la boíte abrite un dispositif selon l'une des revendications 1 à 12.Wrist watch whose box houses a device according to one of claims 1 at 12. Module chronographe du dispositif selon l'une des revendications 1 à 12, caractérisé en ce que ses organes sont agencés de telle sorte que sa hauteur et son diamètre extérieur sont de l'ordre respectivement de 4 mm et 30 mm, et de préférence n'excèdent pas ces valeurs.Chronograph module of the device according to one of claims 1 to 12, characterized in that its organs are arranged such that its height and its outside diameter are of the order of 4 mm and 30 mm respectively, and preferably n ' not exceed these values. Module chronographe du dispositif selon l'axe des revendications 1 à 14.Chronograph module of the device according to the axis of claims 1 to 14.
    EP02405063A 2002-02-01 2002-02-01 Device having clockwork-movement and chronograph module Expired - Lifetime EP1333345B1 (en)

    Priority Applications (16)

    Application Number Priority Date Filing Date Title
    DE60225779T DE60225779T2 (en) 2002-02-01 2002-02-01 Device with movement and chronograph module
    AT02405063T ATE390654T1 (en) 2002-02-01 2002-02-01 DEVICE WITH CLOCK MOVEMENT AND CHRONOGRAPH MODULE
    EP02405063A EP1333345B1 (en) 2002-02-01 2002-02-01 Device having clockwork-movement and chronograph module
    AT03700289T ATE308068T1 (en) 2002-02-01 2003-01-27 DEVICE WITH CLOCK MOVEMENT AND CHRONOGRAPH MODULE
    DE60302040T DE60302040T2 (en) 2002-02-01 2003-01-27 DEVICE WITH MOVEMENT AND CHRONOGRAPH MODULE
    AU2003201592A AU2003201592A1 (en) 2002-02-01 2003-01-27 Device comprising a movement for a timepiece and a chronograhic module
    JP2003564658A JP4505054B2 (en) 2002-02-01 2003-01-27 Device comprising a watch movement and a chronograph module
    EP03700289A EP1470452B1 (en) 2002-02-01 2003-01-27 Device comprising a movement for a timepiece and a chronograhic module
    PCT/CH2003/000063 WO2003065130A2 (en) 2002-02-01 2003-01-27 Device comprising a movement for a timepiece and a chronograhic module
    TW092109144A TWI276930B (en) 2002-02-01 2003-04-18 Device comprising a clock movement and a chronograph module
    CH01351/03A CH697016A5 (en) 2002-02-01 2003-08-04 Watch device having a base movement, an auxiliary module and a correction mechanism indications of the auxiliary module.
    CH01350/03A CH697015A5 (en) 2002-02-01 2003-08-04 watchmaker device comprising a base movement and an auxiliary module.
    US10/899,713 US7905655B2 (en) 2002-02-01 2004-07-27 Device comprising a clock movement and a chronograph module
    US13/047,228 US8308345B2 (en) 2002-02-01 2011-03-14 Device comprising a clock movement and a chronograph module
    US13/047,157 US8113707B2 (en) 2002-02-01 2011-03-14 Device comprising a clock movement and a chronograph module
    US13/047,197 US8182138B2 (en) 2002-02-01 2011-03-14 Device comprising a clock movement and a chronograph module

    Applications Claiming Priority (1)

    Application Number Priority Date Filing Date Title
    EP02405063A EP1333345B1 (en) 2002-02-01 2002-02-01 Device having clockwork-movement and chronograph module

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    EP1333345A1 true EP1333345A1 (en) 2003-08-06
    EP1333345B1 EP1333345B1 (en) 2008-03-26

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    EP02405063A Expired - Lifetime EP1333345B1 (en) 2002-02-01 2002-02-01 Device having clockwork-movement and chronograph module
    EP03700289A Expired - Lifetime EP1470452B1 (en) 2002-02-01 2003-01-27 Device comprising a movement for a timepiece and a chronograhic module

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    EP03700289A Expired - Lifetime EP1470452B1 (en) 2002-02-01 2003-01-27 Device comprising a movement for a timepiece and a chronograhic module

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    US (4) US7905655B2 (en)
    EP (2) EP1333345B1 (en)
    JP (1) JP4505054B2 (en)
    AT (2) ATE390654T1 (en)
    AU (1) AU2003201592A1 (en)
    CH (2) CH697016A5 (en)
    DE (2) DE60225779T2 (en)
    TW (1) TWI276930B (en)
    WO (1) WO2003065130A2 (en)

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    TW200422800A (en) 2004-11-01
    EP1470452B1 (en) 2005-10-26
    DE60302040T2 (en) 2006-07-27
    EP1333345B1 (en) 2008-03-26
    US8308345B2 (en) 2012-11-13
    AU2003201592A1 (en) 2003-09-02
    ATE308068T1 (en) 2005-11-15
    ATE390654T1 (en) 2008-04-15
    US8113707B2 (en) 2012-02-14
    TWI276930B (en) 2007-03-21
    EP1470452A2 (en) 2004-10-27
    WO2003065130A2 (en) 2003-08-07
    JP4505054B2 (en) 2010-07-14
    US7905655B2 (en) 2011-03-15
    DE60225779T2 (en) 2009-06-18
    US20110164477A1 (en) 2011-07-07
    DE60302040D1 (en) 2005-12-01
    US20110164476A1 (en) 2011-07-07
    CH697015A5 (en) 2008-03-14
    WO2003065130A3 (en) 2004-06-24
    JP2005526958A (en) 2005-09-08
    US20110164474A1 (en) 2011-07-07
    CH697016A5 (en) 2008-03-14
    US20050007888A1 (en) 2005-01-13
    DE60225779D1 (en) 2008-05-08
    US8182138B2 (en) 2012-05-22

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