EP3822711A1 - Timepiece mechanism comprising a driving moving part working with a driven moving part - Google Patents

Timepiece mechanism comprising a driving moving part working with a driven moving part Download PDF

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Publication number
EP3822711A1
EP3822711A1 EP20207261.7A EP20207261A EP3822711A1 EP 3822711 A1 EP3822711 A1 EP 3822711A1 EP 20207261 A EP20207261 A EP 20207261A EP 3822711 A1 EP3822711 A1 EP 3822711A1
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EP
European Patent Office
Prior art keywords
mobile
driven
driving
inertia
moment
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.)
Pending
Application number
EP20207261.7A
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German (de)
French (fr)
Inventor
Samuel Tanner
Jean-Baptiste LE BRIS
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Patek Philippe SA Geneve
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Patek Philippe SA Geneve
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Publication date
Application filed by Patek Philippe SA Geneve filed Critical Patek Philippe SA Geneve
Publication of EP3822711A1 publication Critical patent/EP3822711A1/en
Pending 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
    • G04B11/00—Click devices; Stop clicks; Clutches
    • G04B11/006—Clutch mechanism between two rotating members with transfer of movement in only one direction (free running devices)
    • G04B11/008—Clutch mechanism between two rotating members with transfer of movement in only one direction (free running devices) with friction members, e.g. click springs or jumper
    • 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
    • G04B13/00—Gearwork
    • 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
    • G04B19/00—Indicating the time by visual means
    • G04B19/02—Back-gearing arrangements between gear train and hands

Definitions

  • the present invention relates to a timepiece mechanism comprising a driving body and a driven body, said driving body being intended to transmit, during at least one shock, at least one pulse to said driven body capable of causing said driven body to move.
  • Watchmaking mechanisms of this type are known for which the impulse is desired and necessary for the driving mobile to cause the driven mobile to set in motion.
  • a horological mechanism is, for example, a date correction mechanism in which the driving wheel set is a date correction wheel set provided with a driving finger and the driven wheel unit is a date star linked to a date disc, said wheel wheel set. correction being arranged so that its driving finger, subjected to a strong acceleration, delivers a punctual impulse during an impact between said driving finger and the date star, causing said date star and its date disc to advance by one step .
  • the movement of the date star and of its date disc is designed to be a single step per pulse delivered by the correction mobile.
  • the displacement of the date star may accidentally be greater than the theoretical pitch, so that, in this case, the correction of the date will not be correct.
  • Such a mechanism is for example a mechanism for correcting an hour hand preferably arranged to be actuated by a winding stem, and comprising a first hour wheel driven by a timer gear linked to the roadway. which carries the minute hand and a second hour wheel carrying the hour hand and connected to the first hour wheel by an elastic coupling mechanism.
  • Such a mechanism makes it possible to advance the hour hand one hour step by step without driving the minute hand. This allows very easy time setting in the event of a change of time zone for example.
  • the elastic coupling mechanism comprises a star integral with the first hour wheel as well as a jumper and its return spring against the star, carried by the second hour wheel.
  • This elastic coupling mechanism allows the first hour wheel to drive the second hour wheel to display the time while providing a clutch / disengage function and selective indexing of the hour hand in one. of its twelve angular positions in case of correction of the hour hand. More particularly, when correcting the hour hand alone, the second hour wheel is actuated by the winding stem so that, by turning, the jumper carried by the second hour wheel is lifted by a tooth of the he star carried by the first hour wheel which remains fixed, then falls between two teeth of the star.
  • the present invention aims to remedy these drawbacks by proposing a clock mechanism making it possible to control the setting in motion of a driven mobile working with a leading mobile, this control meaning preventing any setting in motion of the driven mobile or authorizing a predetermined displacement of said mobile. conducted, depending on the destination of said watch mechanism.
  • the present invention relates to a horological mechanism comprising a driving mobile and a driven mobile, said driving mobile being intended to transmit, during at least one shock, at least one impulse to said driven mobile capable of causing the setting in motion. of said driven mobile.
  • the driving body and the driven body are configured to have respectively moments of inertia such that the ratio of the moment of inertia of the driven body to the moment of inertia of the driving body is greater than 0.9, so controlling the setting in motion of said mobile driven by the driving mobile.
  • Such control of the setting in motion of the mobile driven by the leading mobile allows, depending on the destination of the watch mechanism of the invention, either to stop a planned but unwanted impulse of the leading mobile on the driven mobile and thus prevent its propagation to said driven mobile as well as to other components of the mechanism linked to said driven mobile, or to give the driven mobile the impulse which is only necessary for its movement as provided for by its function.
  • the present invention also relates to a timepiece comprising a timepiece mechanism as described above.
  • the present invention also relates to a method for controlling the setting in motion of a mobile driven by a driving mobile of a watch mechanism, said driving mobile being intended to transmit, during at least one shock, at least one impulse to said mobile.
  • driven capable of causing the setting in motion of said driven mobile, method in which said driving mobile and said driven mobile are arranged / configured to respectively present moments of inertia such as the ratio of the moment of inertia of the driven mobile to the moment d
  • the inertia of the leading part is greater than 0.9.
  • the expression driving mobile designates the component which, at the moment of impact, is intended to deliver an impulse as well as, if there are any, all the parts which are integral with it in rotation.
  • the expression driven mobile designates the component which, at the moment of impact, is intended to receive said impulse as well as, if there are any, all the parts which are integral with it in rotation.
  • the pulse whether it is voluntary or not, is provided and occurs during the normal operation of the mechanism. This typically excludes the case of an impulse associated with an accidental shock.
  • the present invention relates to a horological mechanism comprising a driving mobile working with a driven mobile. More specifically, the driving mobile is able to cooperate directly with the driven mobile, without a component. intermediary, or indirectly, via an intermediary mobile acting as a referral.
  • the horological mechanism according to the invention is typically such that the driving mobile is arranged to deliver to the driven mobile, during shocks, point pulses, by sudden instantaneous contact, in a desired manner, in order to be able to set said driven mobile in motion.
  • a mechanism is, for example, a date correction mechanism as described above in which the driving mobile is a date correction mobile provided with a driving finger and the driven mobile comprises a date star and a date disc which is therefor. is united.
  • the horological mechanism according to the invention is such that the driving mobile is intended to transmit to the driven mobile, during an impact, by sudden instantaneous contact, and in a planned but involuntary manner, at least one pulse such that it could cause an unwanted setting in motion of said driven mobile.
  • a mechanism is for example a mechanism for correcting an hour hand as described above, said mechanism comprising a first hour wheel driven by a timer gear linked to the roadway which carries the minute hand and secured to it. a star and a second hour wheel carrying the hour hand and connected to the first by an elastic coupling mechanism, said second wheel carrying a jumper cooperating with said star.
  • the driving mobile when setting the time, typically comprises said second hour wheel as well as the hour hand and the jumper that it carries and the driven mobile typically comprises the first hour wheel and the hour hand. star she wears.
  • the definition of the leading / leading roles corresponds to the roles of the two mobiles involved at the time of the shock, independently of their roles when there is no shock.
  • the driving mobile is defined as being the mobile which, during the impact, is intended to deliver an impulse to the driven mobile, even if there is a mode of shock-free operation in which the leading / leading roles can be reversed.
  • the driving mobile and the driven mobile are arranged or configured to respectively present moments of inertia such that the ratio of the moment of inertia of the driven mobile to the moment of inertia of the leading mobile is greater than 0.9 , so as to control the setting in motion of said driven mobile.
  • the driven mobile has a moment of inertia which approaches, and preferably which is greater, or even much greater, than that of the driving mobile, the ratio of the moments of inertia being chosen so that, during a shock from the mobile leading to the driven mobile, a planned but involuntary impulse from the mobile leading to the driven mobile is stopped by the driven mobile, preventing any unwanted setting in motion, its speed remaining zero or so that a voluntary impulse of the driving mobile working with the driven mobile gives said driven mobile an angular acceleration of a determined value which is only necessary for its displacement as provided for by its function.
  • the ratio of the moment of inertia of the driven part to the moment of inertia of the driving part is greater than or equal to 1, preferably greater than or equal to 1.2, preferably greater than or equal to 1.5, preferably greater than or equal to to 2, and more preferably greater than or equal to 3.
  • This may result, for example, by a difference between the moment of inertia of the driven body and the moment of inertia of the driving body greater than or equal to 0 mg * mm 2 preferably greater than or equal to 20 mg * mm 2 , preferably greater than or equal to 50 mg * mm 2 , preferably greater than or equal to 100 mg * mm 2 , and more preferably greater than or equal to 200 mg * mm 2 .
  • the horological mechanism of the present invention is particularly suitable when one of the driving mobile and the driven mobile comprises a jumper and the other of the leading mobile and the driven mobile comprises a star, said jumper being intended to exert on said star, when shock, a torque greater than 10 g.mm, preferably greater than 40 g.mm, preferably greater than 60 g.mm, preferably greater than 100 g.mm, and more preferably greater than 200 g.mm.
  • the watch mechanism of the present invention is also suitable when it has an instantaneous or almost instantaneous function, according to which the driving body suddenly receives an angular acceleration greater than 0.001 rad * ms -2 , and in particular greater than 0.1 rad * ms - 2 , before delivering a pulse to the driven mobile.
  • the speed of the driven mobile just before the impulse transmitted by the leading mobile is considered to be zero.
  • the watch mechanism of the invention constitutes a mechanism for correcting an hour hand 1, preferably arranged to be actuated by a winding stem and not a pusher.
  • this time-setting mechanism used more particularly in the event of a change of time zone, makes it possible to advance the hour hand one hour step by step without driving the minute hand.
  • the mechanism 1 comprises a first hour wheel 2 driven by a timer gear linked to the roadway which carries the minute hand. These elements, known to those skilled in the art, are not represented or described in detail here.
  • the mechanism also comprises a second hour wheel 4 carrying the hour hand (not shown) and arranged so that the first hour wheel 2 and the second hour wheel 4 are superimposed and concentric.
  • the first hand hour wheel 2 can carry said first hand to indicate the home time, the second hour wheel 4 then carrying the hand to indicate local time.
  • the second hour wheel 4 is connected to the first hour wheel 2 by an elastic coupling mechanism.
  • the elastic coupling mechanism comprises a star 6 with twelve teeth integral here with the first hour wheel 2 as well as a jumper 8 biased against the star 6 by its return spring 10, carried here by the second hour wheel 4.
  • the jumper 8 and its return spring 10 are positioned on the plate of the second hour wheel 4.
  • the driving mobile according to the invention comprises the second hour wheel 4 and the driven mobile comprises the first hour wheel 2, driven by the timer gear linked to the roadway, the leading / driven roles being the roles of the moving bodies during the time correction, when the second hour wheel 4 is actuated by the winding stem for the correction and is then capable of generating an impulse on the first hour wheel 2, at the moment of impact when the jumper 8 falls back on the star 6.
  • the second hour wheel 4 is driven by the first hour wheel 2 by the elastic coupling mechanism, which does not generate any shock between the jumper and the star, the leading mobile within the meaning of the invention then again becoming a driven mobile.
  • the jumper 8 and its spring are carried by the second hour wheel 4 and belong to the driving wheel and the star 6 is integral with the first hour wheel 2 and belongs to the driven wheel. But it is quite obvious that the jumper and its spring can be provided on the driven mobile and the star on the leading mobile.
  • the driving and driven moving parts are configured so that the ratio of the moment of inertia of the driven moving part to the moment of inertia of the driving moving part is greater than 0.9, so as to control the setting in motion of said moving part.
  • the plate of the second hour wheel 4 comprises various recesses 12 in the form here of three circular sectors and an oblong opening concentric with the axis of the second hour wheel 4 and distributed around the barrel of said second hour wheel 4. It is obvious that the recesses can have any other suitable shape and arrangement.
  • the second wheel of 4 hours is therefore lightened compared to a standard full board, so that the moment of inertia of the driving mobile is reduced to 288 mg * mm 2 while the driven mobile has a moment of inertia of 273 mg * mm 2 (for example by choosing for the first wheel of hours 2 a suitable material or a suitable embodiment to increase its moment of inertia compared to a standard wheel) so that the ratio of the moment d
  • the inertia of the driven part on the moment of inertia of the driving part is about 0.95.
  • any impulse of the jumper 8 carried by the second hour wheel 4, movable leading, on the star 6 integral with the first hour wheel 2, movable driven has a reduced effect due to the difference in inertia between the two driven and driving moving parts, reducing the risks of an unwanted setting in motion of the star 6, under the dynamic effect, during an impact between said star 6 and the jumper 8.
  • the effect of the jumper 8 carried by the second hour wheel 4 has no influence on the first hour wheel 2 integral with the star 6 and meshing with the timer gear.
  • the impulse delivered by the jumper 8 of the leading mobile, to the star 6 of the driven mobile is therefore not propagated to the rest of the time-setting mechanism, so that the minute hand is not subjected to shift.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)

Abstract

La présente invention propose un mécanisme horloger (1) comprenant un mobile menant (4) et un mobile mené (2), ledit mobile menant (4) étant destiné à transmettre, lors d'au moins un choc, au moins une impulsion audit mobile mené (2) susceptible de provoquer la mise en mouvement dudit mobile mené (2). Le mobile menant (4) et le mobile mené (2) sont configurés pour présenter respectivement des moments d'inertie tels que le rapport du moment d'inertie du mobile mené (2) sur le moment d'inertie du mobile menant (4) est supérieur à 0.9, de manière à contrôler la mise en mouvement dudit mobile mené (2).The present invention provides a watch mechanism (1) comprising a driving wheel (4) and a driven wheel (2), said driving wheel (4) being intended to transmit, during at least one shock, at least one pulse to said wheel. driven (2) capable of causing the setting in motion of said driven mobile (2). The driving body (4) and the driven body (2) are configured to respectively present moments of inertia such as the ratio of the moment of inertia of the driven body (2) to the moment of inertia of the driving body (4) is greater than 0.9, so as to control the setting in motion of said driven mobile (2).

Description

La présente invention concerne un mécanisme horloger comprenant un mobile menant et un mobile mené, ledit mobile menant étant destiné à transmettre, lors d'au moins un choc, au moins une impulsion audit mobile mené susceptible de provoquer la mise en mouvement dudit mobile mené.The present invention relates to a timepiece mechanism comprising a driving body and a driven body, said driving body being intended to transmit, during at least one shock, at least one pulse to said driven body capable of causing said driven body to move.

On connait des mécanismes horlogers de ce genre pour lesquels l'impulsion est souhaitée et nécessaire pour que le mobile menant entraine la mise en mouvement du mobile mené. Un tel mécanisme horloger est par exemple un mécanisme de correction de quantième dans lequel le mobile menant est un mobile de correction de quantième pourvu d'un doigt entraineur et le mobile mené est une étoile de quantième liée à un disque de quantième, ledit mobile de correction étant agencé pour que son doigt entraineur, soumis à une forte accélération, délivre une impulsion ponctuelle lors d'un choc entre ledit doigt entraineur et l'étoile de quantième, faisant avancer ladite étoile de quantième et son disque de quantième d'un pas. En théorie, le déplacement de l'étoile de quantième et de son disque de quantième est prévu pour être d'un seul pas par impulsion délivrée par le mobile de correction. Toutefois, le déplacement de l'étoile de quantième peut accidentellement être supérieur au pas théorique, de sorte que, dans ce cas, la correction du quantième ne sera pas juste.Watchmaking mechanisms of this type are known for which the impulse is desired and necessary for the driving mobile to cause the driven mobile to set in motion. Such a horological mechanism is, for example, a date correction mechanism in which the driving wheel set is a date correction wheel set provided with a driving finger and the driven wheel unit is a date star linked to a date disc, said wheel wheel set. correction being arranged so that its driving finger, subjected to a strong acceleration, delivers a punctual impulse during an impact between said driving finger and the date star, causing said date star and its date disc to advance by one step . In theory, the movement of the date star and of its date disc is designed to be a single step per pulse delivered by the correction mobile. However, the displacement of the date star may accidentally be greater than the theoretical pitch, so that, in this case, the correction of the date will not be correct.

On connait également des mécanismes horlogers pour lesquels l'impulsion donnée par un mobile menant à un mobile mené est non souhaitée, mais apparait malgré tout suite au fonctionnement normal du mécanisme, en raison d'un choc qui peut s'avérer négatif sur ledit fonctionnement normal. Un tel mécanisme est par exemple un mécanisme de correction d'une aiguille des heures agencé de préférence pour être actionné par une tige de remontoir, et comprenant une première roue des heures entrainée par un rouage de minuterie lié à la chaussée qui porte l'aiguille des minutes et une seconde roue des heures portant l'aiguille des heures et reliée à la première roue des heures par un mécanisme élastique d'accouplement. Un tel mécanisme permet de faire avancer pas par pas l'aiguille des heures d'une heure sans entrainer l'aiguille des minutes. Cela permet une mise à l'heure très facile en cas de changement de fuseau horaire par exemple.There are also known horological mechanisms for which the impulse given by a moving body leading to a driven moving body is unwanted, but nevertheless appears following the normal operation of the mechanism, due to an impact which may turn out to be negative on said operation. normal. Such a mechanism is for example a mechanism for correcting an hour hand preferably arranged to be actuated by a winding stem, and comprising a first hour wheel driven by a timer gear linked to the roadway. which carries the minute hand and a second hour wheel carrying the hour hand and connected to the first hour wheel by an elastic coupling mechanism. Such a mechanism makes it possible to advance the hour hand one hour step by step without driving the minute hand. This allows very easy time setting in the event of a change of time zone for example.

Le mécanisme élastique d'accouplement comprend une étoile solidaire de la première roue des heures ainsi qu'un sautoir et son ressort de rappel contre l'étoile, portés par la seconde roue des heures. Ce mécanisme élastique d'accouplement permet à la première roue des heures d'entrainer la seconde roue des heures pour afficher l'heure tout en offrant une fonction d'embrayage/débrayage et un indexage sélectif de l'aiguille des heures dans l'une de ses douze postions angulaires en cas de correction de l'aiguille des heures. Plus particulièrement, lors de la correction de l'aiguille des heures seule, on actionne la seconde roue des heures par la tige de remontoir de sorte qu'en tournant, le sautoir porté par la seconde roue des heures est soulevé par une dent de l'étoile portée par la première roue des heures restée fixe, puis retombe entre deux dents de l'étoile.The elastic coupling mechanism comprises a star integral with the first hour wheel as well as a jumper and its return spring against the star, carried by the second hour wheel. This elastic coupling mechanism allows the first hour wheel to drive the second hour wheel to display the time while providing a clutch / disengage function and selective indexing of the hour hand in one. of its twelve angular positions in case of correction of the hour hand. More particularly, when correcting the hour hand alone, the second hour wheel is actuated by the winding stem so that, by turning, the jumper carried by the second hour wheel is lifted by a tooth of the he star carried by the first hour wheel which remains fixed, then falls between two teeth of the star.

Ce mécanisme élastique d'accouplement est connu et donne habituellement satisfaction. Toutefois, lorsque la seconde roue des heures qui porte le sautoir est agencée pour entrainer une complication nécessitant beaucoup d'énergie, ladite seconde roue des heures doit présenter un couple important. Mais de ce fait, lors de la correction de l'aiguille des heures seule, lorsque le sautoir porté par la seconde roue des heures, appartenant au mobile menant, retombe brusquement sur l'étoile, il peut, lors du choc, délivrer inopinément à ladite étoile et à la première roue des heures solidaire de ladite étoile, qui constituent le mobile mené, une impulsion telle qu'elle peut provoquer accidentellement un micro-déplacement de ladite étoile et de la première roue des heures. Les chocs répétés du sautoir sur l'étoile peuvent donc entrainer des micro-déplacements accidentels de la première roue des heures qui peuvent se propager jusqu'à la chaussée via le rouage de minuterie. Cela peut avoir pour conséquence un déplacement inopiné de l'aiguille des minutes, plus particulièrement lorsque la chaussée est de type roue à friction. De ce fait, l'aiguille des minutes se décale progressivement par rapport à son positionnement normal en raison de la mise en mouvement non contrôlée de la première roue des heures.This elastic coupling mechanism is known and is usually satisfactory. However, when the second hour wheel which carries the jumper is designed to cause a complication requiring a lot of energy, said second hour wheel must have a high torque. But because of this, during the correction of the hour hand alone, when the jumper carried by the second hour wheel, belonging to the driving mobile, suddenly falls back on the star, it can, during the shock, unexpectedly deliver to said star and to the first hour wheel integral with said star, which constitute the driven mobile, an impulse such that it can accidentally cause micro-displacement of said star and of the first hour wheel. The repeated shocks of the jumper on the star can therefore lead to accidental micro-movements of the first hour wheel which can occur. propagate to the roadway via the timer cog. This can result in an unexpected displacement of the minute hand, more particularly when the road surface is of the friction wheel type. As a result, the minute hand gradually shifts from its normal position due to the uncontrolled setting in motion of the first hour wheel.

La présente invention vise à remédier à ces inconvénients en proposant un mécanisme horloger permettant de contrôler la mise en mouvement d'un mobile mené travaillant avec un mobile menant, ce contrôle signifiant empêcher toute mise en mouvement du mobile mené ou autoriser un déplacement prédéterminé dudit mobile mené, en fonction de la destination dudit mécanisme horloger.The present invention aims to remedy these drawbacks by proposing a clock mechanism making it possible to control the setting in motion of a driven mobile working with a leading mobile, this control meaning preventing any setting in motion of the driven mobile or authorizing a predetermined displacement of said mobile. conducted, depending on the destination of said watch mechanism.

A cet effet, la présente invention concerne un mécanisme horloger comprenant un mobile menant et un mobile mené, ledit mobile menant étant destiné à transmettre, lors d'au moins un choc, au moins une impulsion audit mobile mené susceptible de provoquer la mise en mouvement dudit mobile mené.To this end, the present invention relates to a horological mechanism comprising a driving mobile and a driven mobile, said driving mobile being intended to transmit, during at least one shock, at least one impulse to said driven mobile capable of causing the setting in motion. of said driven mobile.

Selon l'invention, le mobile menant et le mobile mené sont configurés pour présenter respectivement des moments d'inertie tels que le rapport du moment d'inertie du mobile mené sur le moment d'inertie du mobile menant est supérieur à 0.9, de manière à contrôler la mise en mouvement dudit mobile mené par le mobile menant.According to the invention, the driving body and the driven body are configured to have respectively moments of inertia such that the ratio of the moment of inertia of the driven body to the moment of inertia of the driving body is greater than 0.9, so controlling the setting in motion of said mobile driven by the driving mobile.

Un tel contrôle de la mise en mouvement du mobile mené par le mobile menant permet, en fonction de la destination du mécanisme horloger de l'invention, soit de stopper une impulsion prévue mais non souhaitée du mobile menant sur mobile mené et d'empêcher ainsi sa propagation audit mobile mené ainsi qu'à d'autres composants du mécanisme liés audit mobile mené, soit de donner au mobile mené l'impulsion qui est seulement nécessaire à son déplacement tel que prévu par sa fonction.Such control of the setting in motion of the mobile driven by the leading mobile allows, depending on the destination of the watch mechanism of the invention, either to stop a planned but unwanted impulse of the leading mobile on the driven mobile and thus prevent its propagation to said driven mobile as well as to other components of the mechanism linked to said driven mobile, or to give the driven mobile the impulse which is only necessary for its movement as provided for by its function.

La présente invention concerne également une pièce d'horlogerie comprenant un mécanisme horloger tel que décrit ci-dessus.The present invention also relates to a timepiece comprising a timepiece mechanism as described above.

La présente invention concerne également un procédé pour contrôler la mise en mouvement d'un mobile mené par un mobile menant d'un mécanisme horloger, ledit mobile menant étant destiné à transmettre, lors d'au moins un choc, au moins une impulsion audit mobile mené susceptible de provoquer la mise en mouvement dudit mobile mené, procédé dans lequel ledit mobile menant et ledit mobile mené sont agencés/configurés pour présenter respectivement des moments d'inertie tels que le rapport du moment d'inertie du mobile mené sur le moment d'inertie du mobile menant est supérieur à 0.9.The present invention also relates to a method for controlling the setting in motion of a mobile driven by a driving mobile of a watch mechanism, said driving mobile being intended to transmit, during at least one shock, at least one impulse to said mobile. driven capable of causing the setting in motion of said driven mobile, method in which said driving mobile and said driven mobile are arranged / configured to respectively present moments of inertia such as the ratio of the moment of inertia of the driven mobile to the moment d The inertia of the leading part is greater than 0.9.

Dans le cadre de la présente invention, l'expression mobile menant désigne le composant qui, au moment du choc, est destiné à délivrer une impulsion ainsi que, s'il y en a, toutes les pièces qui lui sont solidaires en rotation. L'expression mobile mené désigne quant à elle le composant qui, au moment du choc, est destiné à recevoir ladite impulsion ainsi que, s'il y en a, toutes les pièces qui lui sont solidaires en rotation.In the context of the present invention, the expression driving mobile designates the component which, at the moment of impact, is intended to deliver an impulse as well as, if there are any, all the parts which are integral with it in rotation. The expression driven mobile designates the component which, at the moment of impact, is intended to receive said impulse as well as, if there are any, all the parts which are integral with it in rotation.

Dans le cadre de la présente invention, l'impulsion, qu'elle soit volontaire ou non, est prévue et se produit lors du fonctionnement normal du mécanisme. Cela exclut typiquement le cas d'une impulsion associée à un choc accidentel.In the context of the present invention, the pulse, whether it is voluntary or not, is provided and occurs during the normal operation of the mechanism. This typically excludes the case of an impulse associated with an accidental shock.

D'autres caractéristiques et avantages de la présente invention apparaîtront à la lecture de la description détaillée suivante d'un mode de réalisation de l'invention, donnés à titre d'exemple non limitatif, et faite en référence aux dessins annexés dans lesquels :

  • la figure 1 est une vue de dessous en perspective d'un mécanisme horloger selon l'invention, dans le cas d'un mécanisme de correction d'une aiguille des heures ; et
  • la figure 2 est une vue de dessus du mécanisme de la figure 1, la première roue des heures n'étant pas représentée.
Other characteristics and advantages of the present invention will become apparent on reading the following detailed description of an embodiment of the invention, given by way of non-limiting example, and made with reference to the appended drawings in which:
  • the figure 1 is a bottom perspective view of a horological mechanism according to the invention, in the case of a correction mechanism for an hour hand; and
  • the figure 2 is a top view of the mechanism of the figure 1 , the first hour wheel not being shown.

La présente invention concerne un mécanisme horloger comprenant un mobile menant travaillant avec un mobile mené. Plus spécifiquement, le mobile menant est apte à coopérer directement avec le mobile mené, sans composant intermédiaire, ou indirectement, via un mobile intermédiaire faisant office de renvoi.The present invention relates to a horological mechanism comprising a driving mobile working with a driven mobile. More specifically, the driving mobile is able to cooperate directly with the driven mobile, without a component. intermediary, or indirectly, via an intermediary mobile acting as a referral.

Le mécanisme horloger selon l'invention est typiquement tel que le mobile menant est agencé pour délivrer au mobile mené, lors de chocs, des impulsions ponctuelles, par contact brusque instantané, d'une manière voulue, afin de pouvoir mettre en mouvement ledit mobile mené. Un tel mécanisme est par exemple un mécanisme de correction de quantième tel que décrit précédemment dans lequel le mobile menant est un mobile de correction de quantième pourvu d'un doigt entraîneur et le mobile mené comprend une étoile de quantième et un disque de quantième qui lui est solidaire.The horological mechanism according to the invention is typically such that the driving mobile is arranged to deliver to the driven mobile, during shocks, point pulses, by sudden instantaneous contact, in a desired manner, in order to be able to set said driven mobile in motion. . Such a mechanism is, for example, a date correction mechanism as described above in which the driving mobile is a date correction mobile provided with a driving finger and the driven mobile comprises a date star and a date disc which is therefor. is united.

Alternativement, le mécanisme horloger selon l'invention est tel que le mobile menant est destiné à transmettre au mobile mené, lors d'un choc, par contact brusque instantané, et d'une manière prévue mais involontaire, au moins une impulsion telle qu'elle pourrait provoquer une mise en mouvement non souhaitée dudit mobile mené. Un tel mécanisme est par exemple un mécanisme de correction d'une aiguille des heures tel que décrit précédemment, ledit mécanisme comprenant une première roue des heures entraînée par un rouage de minuterie lié à la chaussée qui porte l'aiguille des minutes et solidaire d'une étoile et une seconde roue des heures portant l'aiguille des heures et reliée à la première par un mécanisme élastique d'accouplement, ladite seconde roue portant un sautoir coopérant avec ladite étoile. Dans cet exemple, lors de la mise à l'heure, le mobile menant comprend typiquement ladite seconde roue des heures ainsi que l'aiguille des heures et le sautoir qu'elle porte et le mobile mené comprend typiquement la première roue des heures et l'étoile qu'elle porte.Alternatively, the horological mechanism according to the invention is such that the driving mobile is intended to transmit to the driven mobile, during an impact, by sudden instantaneous contact, and in a planned but involuntary manner, at least one pulse such that it could cause an unwanted setting in motion of said driven mobile. Such a mechanism is for example a mechanism for correcting an hour hand as described above, said mechanism comprising a first hour wheel driven by a timer gear linked to the roadway which carries the minute hand and secured to it. a star and a second hour wheel carrying the hour hand and connected to the first by an elastic coupling mechanism, said second wheel carrying a jumper cooperating with said star. In this example, when setting the time, the driving mobile typically comprises said second hour wheel as well as the hour hand and the jumper that it carries and the driven mobile typically comprises the first hour wheel and the hour hand. star she wears.

Dans la présente description, la définition des rôles menant/mené correspond aux rôles des deux mobiles en cause au moment du choc, indépendamment de leurs rôles lorsqu'il n'y a pas de choc. En particulier, le mobile menant est défini comme étant le mobile, qui, lors du choc, est destiné à délivrer au mobile mené une impulsion, même s'il existe un mode de fonctionnement ne générant pas de choc dans lequel les rôles menant/mené peuvent être inversés.In the present description, the definition of the leading / leading roles corresponds to the roles of the two mobiles involved at the time of the shock, independently of their roles when there is no shock. In particular, the driving mobile is defined as being the mobile which, during the impact, is intended to deliver an impulse to the driven mobile, even if there is a mode of shock-free operation in which the leading / leading roles can be reversed.

Conformément à la présente invention, le mobile menant et le mobile mené sont agencés ou configurés pour présenter respectivement des moments d'inertie tels que le rapport du moment d'inertie du mobile mené sur le moment d'inertie du mobile menant est supérieur à 0.9, de manière à contrôler la mise en mouvement dudit mobile mené.According to the present invention, the driving mobile and the driven mobile are arranged or configured to respectively present moments of inertia such that the ratio of the moment of inertia of the driven mobile to the moment of inertia of the leading mobile is greater than 0.9 , so as to control the setting in motion of said driven mobile.

De ce fait, le mobile mené a un moment d'inertie qui se rapproche, et de préférence qui est supérieur, voire très supérieur, à celui du mobile menant, le rapport des moments d'inertie étant choisi de sorte que, lors d'un choc du mobile menant sur le mobile mené, une impulsion prévue mais non volontaire du mobile menant sur le mobile mené est stoppée par le mobile mené, empêchant toute mise en mouvement non souhaitée, sa vitesse restant nulle ou de sorte qu'une impulsion volontaire du mobile menant travaillant avec le mobile mené donne audit mobile mené une accélération angulaire d'une valeur déterminée qui est seulement nécessaire à son déplacement tel que prévu par sa fonction.Therefore, the driven mobile has a moment of inertia which approaches, and preferably which is greater, or even much greater, than that of the driving mobile, the ratio of the moments of inertia being chosen so that, during a shock from the mobile leading to the driven mobile, a planned but involuntary impulse from the mobile leading to the driven mobile is stopped by the driven mobile, preventing any unwanted setting in motion, its speed remaining zero or so that a voluntary impulse of the driving mobile working with the driven mobile gives said driven mobile an angular acceleration of a determined value which is only necessary for its displacement as provided for by its function.

D'une manière avantageuse, le rapport du moment d'inertie du mobile mené sur le moment d'inertie du mobile menant est supérieur ou égal à 1, préférentiellement supérieur ou égal à 1.2, préférentiellement supérieur ou égal à 1.5, préférentiellement supérieur ou égal à 2, et plus préférentiellement supérieur ou égal à 3. Cela peut se traduire par exemple par une différence entre le moment d'inertie du mobile mené et le moment d'inertie du mobile menant supérieure ou égale à 0 mg*mm2 de préférence supérieure ou égale à 20 mg*mm2, de préférence supérieure ou égale à 50 mg*mm2, préférentiellement supérieure ou égale à 100 mg*mm2, et plus préférentiellement supérieure ou égale à 200 mg*mm2.Advantageously, the ratio of the moment of inertia of the driven part to the moment of inertia of the driving part is greater than or equal to 1, preferably greater than or equal to 1.2, preferably greater than or equal to 1.5, preferably greater than or equal to to 2, and more preferably greater than or equal to 3. This may result, for example, by a difference between the moment of inertia of the driven body and the moment of inertia of the driving body greater than or equal to 0 mg * mm 2 preferably greater than or equal to 20 mg * mm 2 , preferably greater than or equal to 50 mg * mm 2 , preferably greater than or equal to 100 mg * mm 2 , and more preferably greater than or equal to 200 mg * mm 2 .

Le rapport des moments d'inertie mobile mené/mobile menant tel que recherché selon l'invention peut être obtenu de différentes manières qui peuvent être utilisées seules ou en combinaison :

  • le mobile menant peut présenter des évidements configurés de manière à diminuer son moment d'inertie pour obtenir le rapport des moments d'inertie mobile mené/mobile menant tel que recherché. Par exemple le mobile menant peut être une roue dans la planche de laquelle sont prévus des évidements, traversants ou non, permettant de l'alléger. Les évidements peuvent être de toute forme et/ou de toute dimension adaptées à la configuration du mobile menant ;
  • le mobile menant peut être réalisé dans un premier matériau présentant une masse volumique inférieure à 5000 kg/m3, le mobile mené étant réalisé dans un matériau présentant une masse volumique supérieure à 7000 kg/m3, ou le mobile menant peut être réalisé dans un premier matériau présentant une masse volumique au moins deux fois inférieure à la masse volumique du mobile mené, de manière à obtenir le rapport des moments d'inertie mobile mené/mobile menant tel que recherché. Par exemple le mobile menant peut être réalisé en titane, en aluminium, ou en silicium tandis que le mobile mené est réalisé en acier, en laiton ou en or.
  • le mobile mené peut, en plus du composant destiné à recevoir l'impulsion, comprendre un composant additionnel réalisé dans un second matériau présentant une masse volumique supérieure à 8000 kg/m3 ou au moins deux fois supérieure à la masse volumique du mobile menant de manière à obtenir le rapport des moments d'inertie mobile mené/mobile menant tel que recherché, ce composant additionnel étant solidaire du composant destiné à recevoir l'impulsion. Par exemple, le composant du mobile mené destiné à recevoir l'impulsion du mobile menant peut être fixé à un composant additionnel réalisé en or ou en platine, et peut se présenter par exemple sous la forme de masselottes. Dans cet exemple, le mobile menant serait par exemple réalisé en laiton, maillechort, acier, aluminium, rubis ou silicium.
The ratio of the driven movable / leading movable moments of inertia as desired according to the invention can be obtained in different ways which can be used alone or in combination:
  • the driving mobile may have recesses configured so as to reduce its moment of inertia to obtain the ratio of the moments of inertia driven mobile / leading mobile as desired. For example, the driving mobile can be a wheel in the board of which are provided recesses, traversing or not, making it possible to lighten it. The recesses can be of any shape and / or of any dimension adapted to the configuration of the driving mobile;
  • the driving body can be made of a first material having a density of less than 5000 kg / m 3 , the driven piece of equipment being made of a material having a density of more than 7000 kg / m 3 , or the driving body can be made in a first material having a density at least twice lower than the density of the driven mobile, so as to obtain the ratio of the moments of inertia driven mobile / leading mobile as desired. For example, the driving mobile can be made of titanium, aluminum, or silicon, while the driven mobile is made of steel, brass or gold.
  • the driven mobile may, in addition to the component intended to receive the pulse, include an additional component made of a second material having a density greater than 8000 kg / m 3 or at least twice the density of the driving mobile of so as to obtain the ratio of the driven movable / leading movable moments of inertia as desired, this additional component being integral with the component intended to receive the impulse. For example, the component of the driven body intended to receive the impulse from the driving body can be attached to an additional component made of gold or platinum, and can be in the form of weights, for example. In this example, the driving wheel would for example be made of brass, nickel silver, steel, aluminum, ruby or silicon.

Le mécanisme horloger de la présente invention est particulièrement approprié lorsque l'un du mobile menant et du mobile mené comprend un sautoir et l'autre du mobile menant et du mobile mené comprend une étoile, ledit sautoir étant destiné à exercer sur ladite étoile, lors du choc, un couple supérieur à 10 g.mm, de préférence supérieur à 40 g.mm, de préférence supérieur à 60 g.mm, préférentiellement supérieur à 100 g.mm, et plus préférentiellement supérieur à 200 g.mm. Le mécanisme horloger de la présente invention est également approprié lorsqu'il a une fonction instantanée ou quasi-instantanée, selon laquelle le mobile menant reçoit subitement une accélération angulaire supérieure à 0.001 rad*ms-2, et notamment supérieure à 0.1 rad*ms-2, avant de délivrer une impulsion au mobile mené.The horological mechanism of the present invention is particularly suitable when one of the driving mobile and the driven mobile comprises a jumper and the other of the leading mobile and the driven mobile comprises a star, said jumper being intended to exert on said star, when shock, a torque greater than 10 g.mm, preferably greater than 40 g.mm, preferably greater than 60 g.mm, preferably greater than 100 g.mm, and more preferably greater than 200 g.mm. The watch mechanism of the present invention is also suitable when it has an instantaneous or almost instantaneous function, according to which the driving body suddenly receives an angular acceleration greater than 0.001 rad * ms -2 , and in particular greater than 0.1 rad * ms - 2 , before delivering a pulse to the driven mobile.

La vitesse du mobile mené juste avant l'impulsion transmise par le mobile menant est considérée comme étant nulle.The speed of the driven mobile just before the impulse transmitted by the leading mobile is considered to be zero.

Selon un exemple de réalisation de l'invention en référence aux figures 1 et 2, le mécanisme horloger de l'invention constitue un mécanisme de correction d'une aiguille des heures 1, agencé de préférence pour être actionné par une tige de remontoir et non un poussoir.According to an exemplary embodiment of the invention with reference to figures 1 and 2 , the watch mechanism of the invention constitutes a mechanism for correcting an hour hand 1, preferably arranged to be actuated by a winding stem and not a pusher.

Comme décrit en préambule, ce mécanisme de mise à l'heure, utilisé plus particulièrement en cas de changement de fuseau horaire, permet de faire avancer pas par pas l'aiguille des heures d'une heure sans entrainer l'aiguille des minutes.As described in the preamble, this time-setting mechanism, used more particularly in the event of a change of time zone, makes it possible to advance the hour hand one hour step by step without driving the minute hand.

Le mécanisme 1 comprend une première roue des heures 2 entrainée par un rouage de minuterie lié à la chaussée qui porte l'aiguille des minutes. Ces éléments, connus de l'homme du métier, ne sont pas représentés ni décrits en détails ici. Le mécanisme comprend également une seconde roue des heures 4 portant l'aiguille des heures (non représentée) et agencée de sorte que la première roue des heures 2 et la seconde roue des heures 4 sont superposées et concentriques.The mechanism 1 comprises a first hour wheel 2 driven by a timer gear linked to the roadway which carries the minute hand. These elements, known to those skilled in the art, are not represented or described in detail here. The mechanism also comprises a second hour wheel 4 carrying the hour hand (not shown) and arranged so that the first hour wheel 2 and the second hour wheel 4 are superimposed and concentric.

Dans une autre variante destinée à réaliser une pièce d'horlogerie comprenant deux aiguilles des heures, à savoir une première aiguille pour afficher traditionnellement l'heure du domicile, et une seconde aiguille pour afficher l'heure locale variable selon les fuseaux horaires, la première roue des heures 2 peut porter ladite première aiguille pour indiquer l'heure du domicile, la seconde roue des heures 4 portant alors l'aiguille pour indiquer l'heure locale.In another variant intended to produce a timepiece comprising two hour hands, namely a first hand for traditionally displaying the home time, and a second hand for displaying the local time which varies according to the time zones, the first hand hour wheel 2 can carry said first hand to indicate the home time, the second hour wheel 4 then carrying the hand to indicate local time.

La seconde roue des heures 4 est reliée à la première roue des heures 2 par un mécanisme élastique d'accouplement. D'une manière connue, le mécanisme élastique d'accouplement comprend une étoile 6 à douze dents solidaire ici de la première roue des heures 2 ainsi qu'un sautoir 8 rappelé contre l'étoile 6 par son ressort de rappel 10, portés ici par la seconde roue des heures 4. Le sautoir 8 et son ressort de rappel 10 sont positionnés sur la planche de la seconde roue des heures 4.The second hour wheel 4 is connected to the first hour wheel 2 by an elastic coupling mechanism. In a known manner, the elastic coupling mechanism comprises a star 6 with twelve teeth integral here with the first hour wheel 2 as well as a jumper 8 biased against the star 6 by its return spring 10, carried here by the second hour wheel 4. The jumper 8 and its return spring 10 are positioned on the plate of the second hour wheel 4.

Le mobile menant selon l'invention comprend la seconde roue des heures 4 et le mobile mené comprend la première roue des heures 2, entrainée par le rouage de minuterie lié à la chaussée, les rôles menant/mené étant les rôles des mobiles lors de la correction de l'heure, quand la seconde roue des heures 4 est actionnée par la tige de remontoir pour la correction et est alors susceptible de générer une impulsion sur la première roue des heures 2, au moment du choc lorsque le sautoir 8 retombe sur l'étoile 6. Hors du mode de correction et en mode de fonctionnement normal la seconde roue des heures 4 est entrainée par la première roue des heures 2 par le mécanisme élastique d'accouplement, ce qui ne génère aucun choc entre le sautoir et l'étoile, le mobile menant au sens de l'invention redevenant alors un mobile mené.The driving mobile according to the invention comprises the second hour wheel 4 and the driven mobile comprises the first hour wheel 2, driven by the timer gear linked to the roadway, the leading / driven roles being the roles of the moving bodies during the time correction, when the second hour wheel 4 is actuated by the winding stem for the correction and is then capable of generating an impulse on the first hour wheel 2, at the moment of impact when the jumper 8 falls back on the star 6. Out of the correction mode and in normal operating mode the second hour wheel 4 is driven by the first hour wheel 2 by the elastic coupling mechanism, which does not generate any shock between the jumper and the star, the leading mobile within the meaning of the invention then again becoming a driven mobile.

Dans l'exemple représenté, le sautoir 8 et son ressort sont portés par la seconde roue des heures 4 et appartiennent au mobile menant et l'étoile 6 est solidaire de la première roue des heures 2 et appartient au mobile mené. Mais il est bien évident que le sautoir et son ressort peuvent être prévus sur le mobile mené et l'étoile sur le mobile menant.In the example shown, the jumper 8 and its spring are carried by the second hour wheel 4 and belong to the driving wheel and the star 6 is integral with the first hour wheel 2 and belongs to the driven wheel. But it is quite obvious that the jumper and its spring can be provided on the driven mobile and the star on the leading mobile.

Conformément à l'invention, les mobiles menant et mené sont configurés de sorte que le rapport du moment d'inertie du mobile mené sur le moment d'inertie du mobile menant est supérieur à 0.9, de manière à contrôler la mise en mouvement dudit mobile mené. A cet effet, dans l'exemple représenté, la planche de la seconde roue des heures 4 comporte différents évidements 12 sous la forme ici de trois secteurs circulaires et d'une ouverture oblongue concentriques à l'axe de la seconde roue des heures 4 et répartis autour du canon de ladite seconde roue des heures 4. Il est bien évident que les évidements peuvent avoir toute autre forme et disposition appropriées.According to the invention, the driving and driven moving parts are configured so that the ratio of the moment of inertia of the driven moving part to the moment of inertia of the driving moving part is greater than 0.9, so as to control the setting in motion of said moving part. led. To this end, in the example shown, the plate of the second hour wheel 4 comprises various recesses 12 in the form here of three circular sectors and an oblong opening concentric with the axis of the second hour wheel 4 and distributed around the barrel of said second hour wheel 4. It is obvious that the recesses can have any other suitable shape and arrangement.

Dans cette configuration, la seconde roue des heures 4 est donc allégée par rapport à une planche pleine standard, de sorte que le moment d'inertie du mobile menant est ramené à 288 mg*mm2 tandis que le mobile mené a un moment d'inertie de 273 mg*mm2 (par exemple en choisissant pour la première roue des heures 2 un matériau approprié ou une forme de réalisation adéquate pour augmenter son moment d'inertie par rapport à une roue standard) de sorte que le rapport du moment d'inertie du mobile mené sur le moment d'inertie du mobile menant est d'environ 0.95.
Grâce au mécanisme de l'invention, toute impulsion du sautoir 8 porté par la seconde roue des heures 4, mobile menant, sur l'étoile 6 solidaire de la première roue des heures 2, mobile mené, a un effet atténué du fait de la différence d'inertie entre les deux mobiles mené et menant, réduisant les risques d'une mise en mouvement non souhaitée de l'étoile 6, sous l'effet dynamique, lors d'un choc entre ladite étoile 6 et le sautoir 8. Ainsi l'effet du sautoir 8 porté par la seconde roue des heures 4 n'a pas d'influence sur la première roue des heures 2 solidaire de l'étoile 6 et engrenant avec le rouage de minuterie. L'impulsion délivrée par le sautoir 8 du mobile menant, à l'étoile 6 du mobile mené, n'est donc pas propagée au reste du mécanisme de mise à l'heure, de sorte que l'aiguille des minutes ne subit pas de décalage.In this configuration, the second wheel of 4 hours is therefore lightened compared to a standard full board, so that the moment of inertia of the driving mobile is reduced to 288 mg * mm 2 while the driven mobile has a moment of inertia of 273 mg * mm 2 (for example by choosing for the first wheel of hours 2 a suitable material or a suitable embodiment to increase its moment of inertia compared to a standard wheel) so that the ratio of the moment d The inertia of the driven part on the moment of inertia of the driving part is about 0.95.
Thanks to the mechanism of the invention, any impulse of the jumper 8 carried by the second hour wheel 4, movable leading, on the star 6 integral with the first hour wheel 2, movable driven, has a reduced effect due to the difference in inertia between the two driven and driving moving parts, reducing the risks of an unwanted setting in motion of the star 6, under the dynamic effect, during an impact between said star 6 and the jumper 8. Thus the effect of the jumper 8 carried by the second hour wheel 4 has no influence on the first hour wheel 2 integral with the star 6 and meshing with the timer gear. The impulse delivered by the jumper 8 of the leading mobile, to the star 6 of the driven mobile, is therefore not propagated to the rest of the time-setting mechanism, so that the minute hand is not subjected to shift.

Claims (11)

Mécanisme horloger comprenant un mobile menant et un mobile mené, ledit mobile menant étant destiné à transmettre, lors d'au moins un choc, au moins une impulsion audit mobile mené susceptible de provoquer la mise en mouvement dudit mobile mené, caractérisé en ce que le mobile menant et le mobile mené sont configurés pour présenter respectivement des moments d'inertie tels que le rapport du moment d'inertie du mobile mené sur le moment d'inertie du mobile menant est supérieur à 0.9, de manière à contrôler la mise en mouvement dudit mobile mené.Watchmaking mechanism comprising a driving body and a driven body, said driving body being intended to transmit, during at least one shock, at least one pulse to said driven body capable of causing said driven body to move, characterized in that the moving part and the driven part are configured to present respectively moments of inertia such that the ratio of the moment of inertia of the driven part to the moment of inertia of the leading part is greater than 0.9, so as to control the setting in motion of said driven mobile. Mécanisme horloger selon la revendication 1, caractérisé en ce que le rapport du moment d'inertie du mobile mené sur le moment d'inertie du mobile menant est supérieur ou égal à 1, de préférence supérieur ou égal à 1.2, de préférence supérieur ou égal à 1.5, de préférence encore supérieur ou égal à 3.Watch mechanism according to claim 1, characterized in that the ratio of the moment of inertia of the driven mobile to the moment of inertia of the driving mobile is greater than or equal to 1, preferably greater than or equal to 1.2, preferably greater than or equal to 1.5, more preferably greater than or equal to 3. Mécanisme horloger selon l'une des revendications précédentes, caractérisé en ce que le mobile menant présente des évidements (12) configurés de manière à obtenir ledit rapport du moment d'inertie du mobile mené sur le moment d'inertie du mobile menant.Watchmaking mechanism according to one of the preceding claims, characterized in that the driving mobile has recesses (12) configured so as to obtain said ratio of the moment of inertia of the driven mobile to the moment of inertia of the driving mobile. Mécanisme horloger selon l'une des revendications précédentes, caractérisé en ce que le mobile menant est réalisé dans un premier matériau présentant une masse volumique au moins deux fois inférieure à la masse volumique du mobile mené, de manière à obtenir ledit rapport du moment d'inertie du mobile mené sur le moment d'inertie du mobile menant.Watch mechanism according to one of the preceding claims, characterized in that the driving wheel is made of a first material having a density at least two times lower than the density of the driven wheel, so as to obtain said ratio of the moment of inertia of the driven part on the moment of inertia of the driving part. Mécanisme horloger selon l'une des revendications précédentes, caractérisé en ce que le mobile mené comprend un composant additionnel réalisé dans un second matériau présentant une masse volumique au moins deux fois supérieure à la masse volumique du mobile menant de manière à obtenir ledit rapport du moment d'inertie du mobile mené sur le moment d'inertie du mobile menant.Watch mechanism according to one of the preceding claims, characterized in that the driven mobile comprises an additional component produced in a second material having a density at least twice greater than the density of the driving body so as to obtain said ratio of the moment of inertia of the driven body to the moment of inertia of the driving body. Mécanisme horloger selon l'une des revendications précédentes, caractérisé en ce que la vitesse du mobile mené juste avant l'impulsion transmise par le mobile menant est considérée comme nulle.Watch mechanism according to one of the preceding claims, characterized in that the speed of the driven mobile just before the impulse transmitted by the driving mobile is considered to be zero. Mécanisme horloger selon l'une des revendications précédentes, caractérisé en ce que l'un du mobile menant et du mobile mené comprend un sautoir (8) et l'autre du mobile menant et du mobile mené comprend une étoile (6), ledit sautoir (8) étant susceptible d'exercer sur ladite étoile (6), lors dudit choc, un couple supérieur à 10 g.mm, de préférence supérieur à 40 g.mm, de préférence supérieur à 60 g.mm et plus préférentiellement supérieur à 100 g.mm.Watchmaking mechanism according to one of the preceding claims, characterized in that one of the driving mobile and the driven mobile comprises a jumper (8) and the other of the driving mobile and the driven mobile comprises a star (6), said jumper (8) being capable of exerting on said star (6), during said impact, a torque greater than 10 g.mm, preferably greater than 40 g.mm, preferably greater than 60 g.mm and more preferably greater than 100 g.mm. Mécanisme horloger selon l'une des revendications précédentes, caractérisé en ce qu'il constitue un mécanisme de correction (1) d'une aiguille des heures, le mobile mené comprenant une première roue des heures (2) entrainée par un rouage de minuterie et le mobile menant comprenant une seconde roue des heures (4) portant ladite aiguille des heures et reliée à la première roue des heures (2) par un mécanisme élastique d'accouplement.Watchmaking mechanism according to one of the preceding claims, characterized in that it constitutes a correction mechanism (1) for an hour hand, the driven mobile unit comprising a first hour wheel (2) driven by a timer gear and the driving wheel comprising a second hour wheel (4) carrying said hour hand and connected to the first hour wheel (2) by an elastic coupling mechanism. Mécanisme horloger selon la revendication 8, caractérisé en ce que la première roue des heures (2) et la seconde roue des heures (4) sont agencées de manière à être superposées concentriques.Watch mechanism according to Claim 8, characterized in that the first hour wheel (2) and the second hour wheel (4) are arranged so as to be concentrically superimposed. Pièce d'horlogerie comprenant un mécanisme horloger selon l'une des revendications 1 à 9.Timepiece comprising a watch mechanism according to one of claims 1 to 9. Procédé pour contrôler la mise en mouvement d'un mobile mené par un mobile menant d'un mécanisme horloger, ledit mobile menant étant destiné à transmettre, lors d'au moins un choc, au moins une impulsion audit mobile mené susceptible de provoquer la mise en mouvement dudit mobile mené, caractérisé en ce que ledit mobile menant et ledit mobile mené sont configurés pour présenter respectivement des moments d'inertie tels que le rapport du moment d'inertie du mobile mené sur le moment d'inertie du mobile menant est supérieur à 0.9.Method for controlling the setting in motion of a mobile driven by a mobile driving a watch mechanism, said driving mobile being intended to transmit, during at least one shock, at least one pulse to said driven mobile capable of causing the setting. in motion of said driven mobile, characterized in that said leading mobile and said driven mobile are configured to respectively present moments of inertia such that the ratio of the moment of inertia of the driven mobile to the moment of inertia of the leading mobile is greater to 0.9.
EP20207261.7A 2019-11-12 2020-11-12 Timepiece mechanism comprising a driving moving part working with a driven moving part Pending EP3822711A1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2307301A1 (en) * 1975-04-10 1976-11-05 Ebauches Sa WATCH-MAKING PART INCLUDING A MANUALLY ACTIONABLE HOURS INDICATOR BODY INDEPENDENT OF THE MINUTES INDICATOR
EP3336613A1 (en) * 2016-12-16 2018-06-20 Association Suisse pour la Recherche Horlogère Timepiece resonator with two balances arranged to oscillate in a single plane

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2307301A1 (en) * 1975-04-10 1976-11-05 Ebauches Sa WATCH-MAKING PART INCLUDING A MANUALLY ACTIONABLE HOURS INDICATOR BODY INDEPENDENT OF THE MINUTES INDICATOR
EP3336613A1 (en) * 2016-12-16 2018-06-20 Association Suisse pour la Recherche Horlogère Timepiece resonator with two balances arranged to oscillate in a single plane

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