EP2897002A2 - Insulating adjustment mechanism and mechanical timepiece comprising a chronograph mechanism provided with said insulating adjustment mechanism - Google Patents

Insulating adjustment mechanism and mechanical timepiece comprising a chronograph mechanism provided with said insulating adjustment mechanism Download PDF

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Publication number
EP2897002A2
EP2897002A2 EP15151307.4A EP15151307A EP2897002A2 EP 2897002 A2 EP2897002 A2 EP 2897002A2 EP 15151307 A EP15151307 A EP 15151307A EP 2897002 A2 EP2897002 A2 EP 2897002A2
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EP
European Patent Office
Prior art keywords
split
wheel
mechanism according
control ring
lever
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Granted
Application number
EP15151307.4A
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German (de)
French (fr)
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EP2897002B1 (en
EP2897002A3 (en
Inventor
Demetrio Cabiddu
Alain Giradbille
Mathieu Zimmermann
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Montblanc Montre SA
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Richemont International SA
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Publication of EP2897002A3 publication Critical patent/EP2897002A3/en
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Publication of EP2897002B1 publication Critical patent/EP2897002B1/en
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0866—Special arrangements
    • G04F7/0876—Split-time function, e.g. rattrappante

Definitions

  • the present invention relates to a mechanical clockwork movement comprising a chronograph mechanism, this chronograph mechanism being provided with an insulating splitter mechanism.
  • the invention also relates to mechanical timepieces comprising such a movement as well as to an isolation split mechanism taken alone.
  • the object of the present invention is to suppress the energy intake of the mechanism of the split-seconds when it is stopped.
  • the subject of the invention is also a mechanical clockwork movement and a timepiece comprising it equipped with the insulating split-back mechanism according to claim 1.
  • This field wheel 1 meshes permanently with an intermediate wheel 2 pivoted on an intermediate lever 3 pivoted at A on the plate P.
  • This movement also comprises a chronograph wheel 4 integral with a chronograph wheel axle 5 pivoted on a fixed part of the movement and carrying a core 6.
  • the free end of the intermediate rocker 3 cooperates with a first column wheel 7 driven in stepwise rotation by the pawl 8 of a large rocker 9 controlled by a pusher 10 accessible from outside the timepiece.
  • the intermediate wheel 2 meshes with the chronograph wheel 4 or not.
  • This chronograph mechanism comprises a catch-up mechanism comprising a split wheel 11 pivoted concentrically to the chronograph wheel 4.
  • a split lever 12 is pivoted on the split wheel 11 and has an inner end adapted to cooperate with the core 6 under the action of a split lever spring 13. This split lever 12 when it bears on the core 6 drives the split wheel in synchronism with the chronograph wheel 4.
  • This catch-up mechanism further comprises two catch-up grippers 14 and 14 'linked to their spring 19 and actuated by a column wheel of catch-up 15, itself driven step by step by a catch-up plunger 16, accessible from outside the timepiece via a split-seconds rocker 17 and its pawl 18.
  • the split-seconds pliers are open while when the clamp is closed its branches are applied against the serge of the split-seconds wheel 11 which is thus kept stationary and the lever 12 catches on the heart 6.
  • the object of the present invention is to propose a split-second isolation mechanism making it possible to suppress the power consumption of the split-second wheel 11 when it is at a standstill and thus to suppress the variations (lever goes up on the heart - > losses, lever goes down on the heart -> gains) of energy due to the friction of the lever of catching up 12 against the heart 6.
  • This split-second isolation mechanism illustrated in figures 3 and 4 , and more particularly to figures 5 and 6 comprises a control ring 20 mounted on the plate P or a fixed element of the movement so as to be able to move angularly in rotation.
  • This control ring 20 is concentric with the axis of the chronograph wheel 5 and with the split wheel 11.
  • this rotation is preferably 4 to 6 °.
  • This control ring 20 is subjected to the action of a ring spring 21 tending to rotate it, in the counterclockwise direction in the illustrated example, until it bears on a fixed stop 22.
  • This position of the control ring 20 illustrated in FIG. figure 6 corresponds, as will be seen later, to the state 1 of the isolation mechanism for which the split-second needle is synchronous with the second chronograph hand.
  • This control ring 20 comprises a drive finger 23 engaged in a first end of an isolation rocker 24 pivoted by its second end on a fixed part of a movement.
  • This isolation flip-flop 24 comprises in its middle part a feeler 25 cooperating with the split-second column wheel 15.
  • the feeler 25 of the isolating rocker 24 falls between two columns of the split-second column wheel 15, the ring control device 20 is held against the fixed stop 22 by its ring spring 21.
  • the clamps 14 and 14 ' are open releasing the split wheel 11 and the split lever 12 is applied against the core 6 by its spring 13 and the wheel 11 is synchronous with the chronograph wheel ( figure 4 and 6 ).
  • the isolation mechanism comprises connecting rods 26, six in the example illustrated, articulated by a first end on the control ring 20.
  • isolation mechanism still has moving parts, six in the example shown.
  • Each of these moving parts has a first arm 27 secured to a median arc-shaped portion 28 and a second arm 29 extending the middle portion 28, the end of the second arm 29 being pivoted on the plate P or a fixed part of the movement.
  • the first arm 27 is pivoted by its free end on the second end of the rod 26.
  • the median portion 28 of the movable piece 27, 28, 29 has the shape of an arc and the radius of its inner peripheral face is , in this embodiment, substantially equal to the radius of the split wheel 11.
  • This inner peripheral face of the inner ring is then continuous (or almost continuous) and located on a radius less than that on which is placed the outer end of the split lever 12 when in the active position applied by its return spring 13 against the core 6 So, when the isolation mechanism is in the position illustrated in the figure 5 , the split lever 12 encounters the peripheral face of the inner ring and pivots in the clockwise direction so that the inner end of this split lever 12 separates from the core 6 and positions itself outside the scanning radius of the core 6 thus isolating the split wheel 11 of the chronograph wheel 4.
  • connecting rods 26 and moving parts 27, 28, 29 must be at least two according to the embodiments and according to the size of the timepiece and the space available for the split-second insulation mechanism. .
  • this split-second isolation mechanism can be designed on the principle of the diaphragm which consists in angularly displacing a concentric control ring on the split-second wheel in order to move moving parts radially so that they move or not the catch-up lever 12 from a position in contact with the heart 6 to a position for which it is outside the scanning area of the heart 6.
  • An advantage of this isolation mechanism is that it is compact and is directly controlled by the split-second column wheel which also controls the split-second gripper.
  • this diaphragm device makes it possible, by means of connecting rods 26, to move the moving wheel members 27, 28, 29 closer to or away from the axis of the chronograph wheel so that they act or not on the split lever 12. by a rotational movement of a concentric control ring to the chronograph wheel.
  • the force required for the isolation function is provided directly by the user through the pusher.
  • the force required for the insulation is provided by a spring which is armed during the release of the insulation.
  • control ring 20 could have a smaller diameter, for example smaller than the diameter of the split wheel 11, and still control by its rotation moving parts actuating the split lever 12.
  • control ring 20 is kinematically connected to the moving parts 27, 28, 29 of the diaphragm device.
  • the diaphragm device comprises a plurality of arcuate elements 30, four in the illustrated example. These arcuate elements 30 overlap so that the insulation is done as soon as possible in all cases, even in their positions apart the circle is closed.
  • Each movable part 30 carries two pin-like protrusions 31 on their underside. These pins pass through oblique oblong slots 32 of a control ring 33 pivoted on the plate concentric with the split wheel 11, and extend in radial oblong slots 34 formed in the plate or a fixed part of the movement.
  • control ring 33 is subjected to the action of a return spring 21 as in the previously described embodiment and the rotation of this control ring is caused as in the previously described embodiment by an isolation rocker 24.
  • Two of the moving parts 30 comprise on its face opposite to that carrying the pins 31 two pads 35.
  • a split second spring 36 fixed on the plate is moved by the pads 35 when the moving parts 30 are moved inwardly and blocks the split wheel 11 while the moving parts 30 move the split lever 12 out of contact with the heart 6.
  • This split-spring is used as a split-second forceps which can be removed.
  • control ring 33 is kinematically connected to the moving parts 30 of the diaphragm device.

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

Abstract

Le mécanisme d'isolation de rattrapante comprend un levier de rattrapante (12), pivoté sur une roue de rattrapante (11) coaxiale à une roue de chronographe (4), apte à être en contact sous l'action d'un ressort de levier (13) avec un coeur (6) solidaire de la roue de chronographe (4). Il comporte un dispositif de diaphragme présentant plusieurs bielles (26) reliant une bague de commande (20) concentrique à la roue de rattrapante (11) à plusieurs pièces mobiles (27, 28,29) comportant chacune une partie médiane en forme d'arc de cercle de telle manière qu'un déplacement angulaire de la bague de commande provoque un rapprochement ou un éloignement des parties médianes (28) des pièces mobiles (27, 28, 29) de l'axe (5) de la roue de chronographe.The split-second isolation mechanism comprises a split-lever (12), pivoted on a split-second wheel (11) coaxial with a chronograph wheel (4), able to be in contact under the action of a lever spring (13) with a heart (6) integral with the chronograph wheel (4). It comprises a diaphragm device having a plurality of connecting rods (26) connecting a control ring (20) concentric with the split-second wheel (11) with a plurality of moving parts (27, 28, 29), each having a bow-shaped middle portion. in such a way that an angular displacement of the control ring causes the middle parts (28) of the moving parts (27, 28, 29) to move towards or away from the axis (5) of the chronograph wheel.

Description

La présente invention concerne un mouvement d'horlogerie mécanique comportant un mécanisme de chronographe, ce mécanisme de chronographe étant muni d'un mécanisme de rattrapante à isolation. L'invention se rapporte également aux pièces d'horlogerie mécaniques comportant un tel mouvement ainsi qu'à un mécanisme de rattrapante à isolation pris isolément.The present invention relates to a mechanical clockwork movement comprising a chronograph mechanism, this chronograph mechanism being provided with an insulating splitter mechanism. The invention also relates to mechanical timepieces comprising such a movement as well as to an isolation split mechanism taken alone.

Le but de la présente invention est de supprimer la prise d'énergie du mécanisme de la rattrapante lorsque celle-ci est arrêtée.The object of the present invention is to suppress the energy intake of the mechanism of the split-seconds when it is stopped.

Ce but est réalisé par le mécanisme de rattrapante à isolation selon l'invention décrite dans la revendication 1.This object is achieved by the insulating split-back mechanism according to the invention described in claim 1.

L'invention a encore pour objet un mouvement d'horlogerie mécanique ainsi qu'une pièce d'horlogerie le comportant équipée du mécanisme de rattrapante à isolation selon la revendication 1.The subject of the invention is also a mechanical clockwork movement and a timepiece comprising it equipped with the insulating split-back mechanism according to claim 1.

Le dessin annexé illustre schématiquement et à titre d'exemple et partiellement un mouvement d'horlogerie mécanique comportant un chronographe muni du mécanisme de rattrapante à isolation selon l'invention.

  • La figure 1 illustre en plan et partiellement un mouvement comportant un mécanisme de chronographe, ce mécanisme étant à l'arrêt.
  • La figure 2 est une vue semblable à la figure 1, le mécanisme de chronographe étant en marche.
  • La figure 3 illustre en plan le mécanisme de rattrapante à isolation en position active, la rattrapante étant isolée et immobile.
  • La figure 4 est une vue semblable à la celle de la figure 3, le mécanisme de rattrapante à isolation étant en position inactive, la rattrapante étant en marche.
  • La figure 5 est une vue en plan du mécanisme d'isolation du mécanisme de rattrapante à isolation en position active, la rattrapante étant isolée.
  • La figure 6 est une vue semblable à la figure 5, le mécanisme d'isolation étant en position inactive, la rattrapante étant entraînée par la roue de chronographe.
  • Les figures 7 à 12 illustrent une variante du système de diaphragme du mécanisme de rattrapante.
The attached drawing illustrates schematically and by way of example and partially a mechanical clockwork movement comprising a chronograph provided with the split-back mechanism with insulation according to the invention.
  • The figure 1 illustrates in plan and partially a movement comprising a chronograph mechanism, this mechanism being at a standstill.
  • The figure 2 is a view similar to the figure 1 with the chronograph mechanism running.
  • The figure 3 illustrates in plan the split-back mechanism with active position isolation, the catch-up being isolated and immobile.
  • The figure 4 is a view similar to that of the figure 3 , the isolation compensating mechanism being in the inactive position, the catch-up being in operation.
  • The figure 5 is a plan view of the isolation mechanism of the active-position insulating split-back mechanism, the jumper being isolated.
  • The figure 6 is a view similar to the figure 5 , the isolation mechanism being in the inactive position, the catching being driven by the chronograph wheel.
  • The Figures 7 to 12 illustrate a variant of the diaphragm system of the split-second mechanism.

Un mouvement d'horlogerie mécanique comportant le mécanisme de rattrapante à isolation comprend un moteur relié par un rouage moteur régulé par un organe réglant à une roue de champ 1 pivotée sur la platine P ou une pièce fixe du mouvement. Cette roue de champ 1 engrène en permanence avec une roue intermédiaire 2 pivotée sur une bascule intermédiaire 3 pivotée en A sur la platine P.A mechanical watchmaking movement comprising the insulating split-back mechanism comprises a motor connected by a motor gear wheel regulated by a regulating member to a field wheel 1 pivoted on the plate P or a fixed part of the movement. This field wheel 1 meshes permanently with an intermediate wheel 2 pivoted on an intermediate lever 3 pivoted at A on the plate P.

Ce mouvement comporte encore une roue de chronographe 4 solidaire d'un axe de roue de chronographe 5 pivoté sur une partie fixe du mouvement et portant un coeur 6.This movement also comprises a chronograph wheel 4 integral with a chronograph wheel axle 5 pivoted on a fixed part of the movement and carrying a core 6.

L'extrémité libre de la bascule intermédiaire 3 coopère avec une première roue à colonne 7 entraînée en rotation pas à pas par le cliquet 8 d'une grande bascule 9 commandée par un poussoir 10 accessible de l'extérieur de la pièce d'horlogerie.The free end of the intermediate rocker 3 cooperates with a first column wheel 7 driven in stepwise rotation by the pawl 8 of a large rocker 9 controlled by a pusher 10 accessible from outside the timepiece.

Suivant la position de la roue à colonne 7, la roue intermédiaire 2 engrène ou non avec la roue de chronographe 4.Depending on the position of the column wheel 7, the intermediate wheel 2 meshes with the chronograph wheel 4 or not.

Ce mécanisme de chronographe comporte un mécanisme de rattrapante comportant une roue de rattrapante 11 pivotée concentriquement à la roue de chronographe 4. Un levier de rattrapante 12 est pivoté sur la roue de rattrapante 11 et comporte une extrémité intérieure apte à coopérer avec le coeur 6 sous l'action d'un ressort de levier de rattrapante 13. Ce levier de rattrapante 12 lorsqu'il est en appui sur le coeur 6 entraîne la roue de rattrapante en synchronisme avec la roue de chronographe 4.This chronograph mechanism comprises a catch-up mechanism comprising a split wheel 11 pivoted concentrically to the chronograph wheel 4. A split lever 12 is pivoted on the split wheel 11 and has an inner end adapted to cooperate with the core 6 under the action of a split lever spring 13. This split lever 12 when it bears on the core 6 drives the split wheel in synchronism with the chronograph wheel 4.

Ce mécanisme de rattrapante comporte encore deux pinces de rattrapante 14 et 14' liées à leur ressort 19 et actionnées par une roue à colonne de rattrapante 15, elle-même entraînée pas à pas par un poussoir de rattrapante 16, accessible de l'extérieur de la pièce d'horlogerie par l'intermédiaire d'une bascule de rattrapante 17 et son cliquet 18. Lorsque la roue de rattrapante 11 est entraînée par le coeur 6 et la roue de chronographe 4, la pince de rattrapante est ouverte tandis que lorsque la pince est fermée ses branches sont appliquées contre la serge de la roue de rattrapante 11 qui est ainsi maintenue à l'arrêt et le levier de rattrapante 12 glisse sur le coeur 6.This catch-up mechanism further comprises two catch-up grippers 14 and 14 'linked to their spring 19 and actuated by a column wheel of catch-up 15, itself driven step by step by a catch-up plunger 16, accessible from outside the timepiece via a split-seconds rocker 17 and its pawl 18. When the catch-up wheel 11 is driven by the heart 6 and the chronograph wheel 4, the split-seconds pliers are open while when the clamp is closed its branches are applied against the serge of the split-seconds wheel 11 which is thus kept stationary and the lever 12 catches on the heart 6.

L'objet de la présente invention est de proposer un mécanisme d'isolation de rattrapante permettant de supprimer la prise d'énergie de la roue de rattrapante 11 lorsqu'elle est à l'arrêt et ainsi supprimer les variations (levier monte sur coeur -> pertes, levier descend sur coeur -> gains) d'énergie dues au frottement du levier de rattrapante 12 contre le coeur 6.The object of the present invention is to propose a split-second isolation mechanism making it possible to suppress the power consumption of the split-second wheel 11 when it is at a standstill and thus to suppress the variations (lever goes up on the heart - > losses, lever goes down on the heart -> gains) of energy due to the friction of the lever of catching up 12 against the heart 6.

Comme on le verra dans ce qui suit, le mécanisme d'isolation de rattrapante, objet de l'invention, permet en déplaçant le levier de rattrapante 12 contre l'action de son ressort 13, d'éloigner son extrémité intérieure pour qu'elle ne soit plus en contact avec le coeur 6 quelle que soit la position angulaire de ce coeur 6. Ce mécanisme d'isolation est conçu comme un système de diaphragme et peut prendre deux états :

  1. 1. Lorsque l'aiguille de rattrapante solidaire de la roue de rattrapante est synchrone avec l'aiguille des secondes portée par l'axe 5 de la roue de chronographe 4, le diaphragme est ouvert et le levier de rattapante 12 agit sur le coeur 6 sous l'action de son ressort 13 pour garantir la superposition de deux aiguilles, rattrapante et seconde de chronographe, comme dans une rattrapante classique sans isolation.
  2. 2. Lorsque l'aiguille de rattrapante est asynchrone avec l'aiguille de seconde de chronographe, le diaphragme est fermé et agit sur l'extrémité extérieure du levier de rattrapante 12 faisant pivoter ce levier de rattrapante 12 et le dégage du coeur 6. Ce dégagement est suffisant pour que le coeur 6 puisse faire un tour complet sans entrer en contact avec l'extrémité intérieure du levier de rattrapante.
As will be seen in the following, the split-second isolation mechanism, object of the invention, allows the retractor lever 12 to move against the action of its spring 13, to move its inner end so that it is no longer in contact with the heart 6 regardless of the angular position of the heart 6. This isolation mechanism is designed as a diaphragm system and can take two states:
  1. 1. When the split-second needle attached to the split-second wheel is synchronous with the second hand carried by the axis 5 of the chronograph wheel 4, the diaphragm is open and the engaging lever 12 acts on the heart 6 under the action of its spring 13 to ensure the superposition of two needles, rattrapante and second chronograph, as in a classic jumper without insulation.
  2. 2. When the split-second needle is asynchronous with the chronograph-second hand, the diaphragm is closed and acts on the outer end of the split-second lever 12 pivoting the catch-up lever 12 and the release of the heart 6. This clearance is sufficient for the core 6 to make a complete turn without coming into contact with the inner end of the split lever.

Ce mécanisme d'isolation de rattrapante illustré aux figures 3 et 4, et plus particulièrement aux figures 5 et 6, comporte une bague de commande 20 montée sur la platine P ou un élément fixe du mouvement de manière à pouvoir se déplacer angulairement en rotation. Cette bague de commande 20 est concentrique à l'axe de la roue de chronographe 5 et à la roue de rattrapante 11. Dans la forme d'exécution décrite à titre d'exemple (où le mécanisme d'isolation comprend six bielles 26 tel que décrit ci-dessous), cette rotation se fait sur 4 à 6° de préférence.This split-second isolation mechanism illustrated in figures 3 and 4 , and more particularly to figures 5 and 6 , comprises a control ring 20 mounted on the plate P or a fixed element of the movement so as to be able to move angularly in rotation. This control ring 20 is concentric with the axis of the chronograph wheel 5 and with the split wheel 11. In the embodiment described by way of example (in which the isolation mechanism comprises six connecting rods 26 such that described below), this rotation is preferably 4 to 6 °.

Cette bague de commande 20 est soumise à l'action d'un ressort de bague 21 tendant à la faire pivoter, dans le sens anti-horaire dans l'exemple illustré, jusqu'à ce qu'elle soit en appui sur une butée fixe 22. Cette position de la bague de commande 20 illustrée à la figure 6 correspond, comme on le verra plus loin, à l'état 1 du mécanisme d'isolation pour lequel l'aiguille de rattrapante est synchrone avec l'aiguille de seconde de chronographe.This control ring 20 is subjected to the action of a ring spring 21 tending to rotate it, in the counterclockwise direction in the illustrated example, until it bears on a fixed stop 22. This position of the control ring 20 illustrated in FIG. figure 6 corresponds, as will be seen later, to the state 1 of the isolation mechanism for which the split-second needle is synchronous with the second chronograph hand.

Cette bague de commande 20 comporte un doigt d'entraînement 23 engagé dans une première extrémité d'une bascule d'isolation 24 pivotée par sa deuxième extrémité sur une partie fixe d'un mouvement. Cette bascule d'isolation 24 comporte dans sa partie médiane un palpeur 25 coopérant avec la roue à colonne de rattrapante 15. Lorsque le palpeur 25 de la bascule d'isolation 24 tombe entre deux colonnes de la roue à colonne de rattrapante 15, la bague de commande 20 est maintenue contre la butée fixe 22 par son ressort de bague 21. Les pinces 14 et 14' sont ouvertes libérant la roue de rattrapante 11 et le levier de rattrapante 12 est appliqué contre le coeur 6 par son ressort 13 et la roue de rattrapante 11 est synchrone avec la roue de chronographe (figure 4 et 6).This control ring 20 comprises a drive finger 23 engaged in a first end of an isolation rocker 24 pivoted by its second end on a fixed part of a movement. This isolation flip-flop 24 comprises in its middle part a feeler 25 cooperating with the split-second column wheel 15. When the feeler 25 of the isolating rocker 24 falls between two columns of the split-second column wheel 15, the ring control device 20 is held against the fixed stop 22 by its ring spring 21. The clamps 14 and 14 'are open releasing the split wheel 11 and the split lever 12 is applied against the core 6 by its spring 13 and the wheel 11 is synchronous with the chronograph wheel ( figure 4 and 6 ).

Le mécanisme d'isolation comporte des bielles 26, six dans l'exemple illustré, articulées par une première extrémité sur la bague de commande 20. Ce mécanisme d'isolation comporte encore des pièces mobiles, six dans l'exemple illustré. Chacune de ces pièces mobiles présente un premier bras 27 solidaire d'une partie médiane en forme d'arc de cercle 28 et un second bras 29 prolongeant la partie médiane 28, l'extrémité de ce second bras 29 étant pivotée sur la platine P ou une partie fixe du mouvement. Le premier bras 27 est pivoté par son extrémité libre sur la seconde extrémité de la bielle 26. La partie médiane 28 de la pièce mobile 27, 28, 29 présente la forme d'un arc de cercle et le rayon de sa face périphérique interne est, dans cette forme d'exécution, sensiblement égal au rayon de la roue de rattrapante 11.The isolation mechanism comprises connecting rods 26, six in the example illustrated, articulated by a first end on the control ring 20. isolation mechanism still has moving parts, six in the example shown. Each of these moving parts has a first arm 27 secured to a median arc-shaped portion 28 and a second arm 29 extending the middle portion 28, the end of the second arm 29 being pivoted on the plate P or a fixed part of the movement. The first arm 27 is pivoted by its free end on the second end of the rod 26. The median portion 28 of the movable piece 27, 28, 29 has the shape of an arc and the radius of its inner peripheral face is , in this embodiment, substantially equal to the radius of the split wheel 11.

Lorsque la bague de commande 20 est déplacée de sa position illustrée à la figure 6 jusque dans sa position illustrée à la figure 5 par l'action de la bascule d'isolement 24, les bielles 26 poussent dans le sens horaire les premiers bras 27 des pièces mobiles 27, 28, 29 et les parties médianes 28 de ces pièces mobiles viennent buter les unes contre les autres formant ainsi une bague intérieure dont la face périphérique interne est coaxiale à l'axe 5 de la roue de seconde et dont le rayon est, dans cette forme d'exécution, très légèrement supérieur à celui de la roue de rattrapante 11. Cette face périphérique interne de la bague intérieure est alors continue (ou quasiment continue) et située sur un rayon inférieur à celui sur lequel est placée l'extrémité extérieure du levier de rattrapante 12 lorsqu'il est en position active appliqué par son ressort de rappel 13 contre le coeur 6. Ainsi, lorsque le mécanisme d'isolation est dans la position illustrée à la figure 5, le levier de rattrapante 12 rencontre la face périphérique de la bague intérieure et pivote dans le sens horaire de sorte que l'extrémité intérieure de ce levier de rattrapante 12 se sépare du coeur 6 et se positionne en dehors du rayon de balayage du coeur 6, isolant ainsi la roue de rattrapante 11 de la roue de chronographe 4.When the control ring 20 is moved from its illustrated position to the figure 6 in its position illustrated in figure 5 by the action of the isolating rocker 24, the connecting rods 26 push in the clockwise direction the first arms 27 of the moving parts 27, 28, 29 and the middle parts 28 of these moving parts abut against each other thus forming an inner ring whose inner peripheral face is coaxial with the axis 5 of the second wheel and whose radius is, in this embodiment, slightly greater than that of the split wheel 11. This inner peripheral face of the inner ring is then continuous (or almost continuous) and located on a radius less than that on which is placed the outer end of the split lever 12 when in the active position applied by its return spring 13 against the core 6 So, when the isolation mechanism is in the position illustrated in the figure 5 , the split lever 12 encounters the peripheral face of the inner ring and pivots in the clockwise direction so that the inner end of this split lever 12 separates from the core 6 and positions itself outside the scanning radius of the core 6 thus isolating the split wheel 11 of the chronograph wheel 4.

Bien entendu, le nombre de bielles 26 et de pièces mobiles 27, 28, 29 doit être au moins de deux suivant les réalisations et selon la dimension de la pièce d'horlogerie et de l'encombrement disponible pour le mécanisme d'isolation de rattrapante.Of course, the number of connecting rods 26 and moving parts 27, 28, 29 must be at least two according to the embodiments and according to the size of the timepiece and the space available for the split-second insulation mechanism. .

Bien entendu, d'autres réalisation de ce mécanisme d'isolation de rattrapante peuvent être conçus sur ce principe du diaphragme qui consiste à déplacer angulairement une bague de commande concentrique à la roue de rattrapante pour déplacer des pièces mobiles radialement de manière à ce qu'elles déplacent ou non le levier de rattrapante 12 le faisant passer d'une position en contact avec le coeur 6 à une position pour laquelle il est hors de l'aire de balayage du coeur 6.Of course, other embodiments of this split-second isolation mechanism can be designed on the principle of the diaphragm which consists in angularly displacing a concentric control ring on the split-second wheel in order to move moving parts radially so that they move or not the catch-up lever 12 from a position in contact with the heart 6 to a position for which it is outside the scanning area of the heart 6.

Un avantage de ce mécanisme d'isolation est qu'il est peu encombrant et qu'il est directement commandé par la roue à colonne de rattrapante qui commande également la pince de rattrapante.An advantage of this isolation mechanism is that it is compact and is directly controlled by the split-second column wheel which also controls the split-second gripper.

Ainsi, ce dispositif de diaphragme permet à l'aide de bielles 26 de rapprocher ou d'éloigner de l'axe de la roue de chronographe des pièces mobiles 27, 28, 29 pour qu'elles agissent ou non sur le levier de rattrapante 12 par un mouvement de rotation d'une bague de commande concentrique à la roue de chronographe.Thus, this diaphragm device makes it possible, by means of connecting rods 26, to move the moving wheel members 27, 28, 29 closer to or away from the axis of the chronograph wheel so that they act or not on the split lever 12. by a rotational movement of a concentric control ring to the chronograph wheel.

Dans la forme d'exécution décrite du mécanisme de rattrapante à isolation la force nécessaire à la fonction d'isolation est fournie directement par l'utilisateur par le biais du poussoir. Dans une variante on peut prévoir que la force nécessaire à l'isolation soit fournie par un ressort qui est armé lors de la libération de l'isolation.In the described embodiment of the isolation compensating mechanism, the force required for the isolation function is provided directly by the user through the pusher. In a variant it can be provided that the force required for the insulation is provided by a spring which is armed during the release of the insulation.

Dans une variante, la bague de commande 20 pourrait présenter un plus faible diamètre, par exemple inférieur au diamètre de la roue de rattrapante 11, et néanmoins commander par sa rotation des pièces mobiles actionnant le levier de rattrapante 12.In a variant, the control ring 20 could have a smaller diameter, for example smaller than the diameter of the split wheel 11, and still control by its rotation moving parts actuating the split lever 12.

Dans tous les cas la bague de commande 20 est reliée cinématiquement aux pièces mobiles 27, 28, 29 du dispositif de diaphragme.In all cases the control ring 20 is kinematically connected to the moving parts 27, 28, 29 of the diaphragm device.

Dans une variante illustrée aux figures 7 à 12 le dispositif de diaphragme comporte plusieurs éléments en forme d'arc de cercle 30, quatre dans l'exemple illustré. Ces éléments en forme d'arc de cercle 30 se chevauchent pour que l'isolation se fasse le plus tôt possible dans tous les cas, même dans leurs positions écartées le cercle est fermé.In a variant illustrated in Figures 7 to 12 the diaphragm device comprises a plurality of arcuate elements 30, four in the illustrated example. These arcuate elements 30 overlap so that the insulation is done as soon as possible in all cases, even in their positions apart the circle is closed.

Ces éléments en forme d'arc de cercle 30 ou pièces mobiles coulissent radialement et viennent soulever le levier de rattrapante 12 pour réaliser l'isolation de la rattrapante.These elements in the form of a circular arc 30 or moving parts slide radially and come to lift the catch-up lever 12 to achieve the insulation of the split-seconds.

Chaque pièce mobile 30 portent deux excroissances de type goupille 31 sur leurs face inférieure. Ces goupilles traversent des fentes oblongues obliques 32 d'une bague de commande 33 pivotée sur la platine concentrique à la roue de rattrapante 11, et s'étendent dans des fentes oblongues radiales 34 pratiquées dans la platine ou une pièce fixe du mouvement.Each movable part 30 carries two pin-like protrusions 31 on their underside. These pins pass through oblique oblong slots 32 of a control ring 33 pivoted on the plate concentric with the split wheel 11, and extend in radial oblong slots 34 formed in the plate or a fixed part of the movement.

La bague de commande 33 est soumise à l'action d'un ressort de rappel 21 comme dans l'exécution précédemment décrite et la rotation de cette bague de commande est provoquée comme dans l'exécution précédemment décrite par une bascule d'isolation 24.The control ring 33 is subjected to the action of a return spring 21 as in the previously described embodiment and the rotation of this control ring is caused as in the previously described embodiment by an isolation rocker 24.

Ainsi, lorsque la bascule d'isolation 24 déplace angulairement la bague de commande 33 contre l'action de son ressort de rappel 21, les pièces mobiles 30 se déplacent radialement vers le centre de la rattrapante et soulèvent le levier de rattrapante 12 réalisant ainsi l'isolation de la rattrapante.Thus, when the isolator rocker 24 angularly displaces the control ring 33 against the action of its return spring 21, the moving parts 30 move radially towards the center of the split-second and lift the split lever 12 thus making insulation of the jumper.

Deux des pièces mobiles 30 comportent sur sa face opposée à celle portant les goupilles 31 deux plots 35.Two of the moving parts 30 comprise on its face opposite to that carrying the pins 31 two pads 35.

Un ressort double de rattrapante 36 fixé sur la platine est déplacé par les plots 35 lorsque les pièces mobiles 30 sont déplacées vers l'intérieur et vient bloquer la roue de rattrapante 11 alors que les pièces mobiles 30 déplacent le levier de rattrapante 12 hors de contact avec le coeur 6. Ce ressort double de rattrapante fait office de pince de rattrapante qui elle peut être supprimée.A split second spring 36 fixed on the plate is moved by the pads 35 when the moving parts 30 are moved inwardly and blocks the split wheel 11 while the moving parts 30 move the split lever 12 out of contact with the heart 6. This split-spring is used as a split-second forceps which can be removed.

Dans cette variante également la bague de commande 33 est reliée cinématiquement aux pièces mobiles 30 du dispositif de diaphragme.In this variant also the control ring 33 is kinematically connected to the moving parts 30 of the diaphragm device.

Claims (13)

Mécanisme d'isolation de rattrapante comprenant un levier de rattrapante (12), pivoté sur une roue de rattrapante (11) coaxiale à une roue de chronographe (4), apte à être en contact sous l'action d'un ressort de levier (13) avec un coeur (6) solidaire de la roue de chronographe (4), caractérisé par le fait qu'il comporte un dispositif de diaphragme présentant plusieurs pièces mobiles reliées à une bague de commande (20) concentrique à la roue de rattrapante (11) ; ces pièces mobiles (27, 28,29) comportant chacune une partie médiane (28) en forme d'arc de cercle de telle manière qu'un déplacement angulaire de la bague de commande (20) provoque un rapprochement ou un éloignement des parties médianes (28) des pièces mobiles (27, 28, 29) de l'axe (5) de la roue de chronographe.A split-second isolation mechanism comprising a split-lever (12), pivoted on a split-second wheel (11) coaxial with a chronograph wheel (4), able to be in contact under the action of a lever spring ( 13) with a core (6) integral with the chronograph wheel (4), characterized in that it comprises a diaphragm device having a plurality of moving parts connected to a control ring (20) concentric with the split wheel ( 11); these movable parts (27, 28, 29) each having a central portion (28) in the form of an arc of a circle so that an angular displacement of the control ring (20) causes an approximation or a removal of the median parts (28) moving parts (27, 28, 29) of the axis (5) of the chronograph wheel. Mécanisme d'isolation selon la revendication 1, caractérisé par le fait que lorsque les parties médianes (28) des pièces mobiles sont en position éloignée de l'axe (5) de la roue de chronographe, leurs faces périphériques internes sont en dehors de l'aire de balayage de l'extrémité extérieure du levier de rattrapante (12).Insulating mechanism according to claim 1, characterized in that when the median parts (28) of the moving parts are at a position away from the axis (5) of the chronograph wheel, their inner peripheral faces are outside the scanning area of the outer end of the split lever (12). Mécanisme d'isolation selon la revendication 2, caractérisé par le fait que lorsque les parties médianes (28) des pièces mobiles (27, 28, 29) sont en position rapprochée de l'axe (5) de la roue de chronographe (4), les faces périphériques internes des pièces mobiles forment une surface au moins quasiment continue entrant en contact avec l'extrémité extérieure du levier d'isolation (12) faisant pivoter celui-ci, de sorte que son extrémité intérieure soit située hors de l'aire de balayage du coeur (6).Insulating mechanism according to claim 2, characterized in that when the median parts (28) of the moving parts (27, 28, 29) are in a position close to the axis (5) of the chronograph wheel (4) the inner peripheral faces of the moving parts form an at least substantially continuous surface contacting the outer end of the isolation lever (12) rotating the latter, so that its inner end is located outside the scanning area of the heart (6). Mécanisme d'isolation selon l'une des revendications 1 à 3, caractérisé par le fait que la bague de commande est soumise à un ressort de rappel et que ses déplacements angulaires sont provoqués par une bascule de rattrapante.Insulating mechanism according to one of claims 1 to 3, characterized in that the control ring is subjected to a return spring and that its angular displacements are caused by a catch-up lever. Mécanisme selon l'une des revendications précédentes, caractérisé par le fait qu'il comporte une bascule d'isolation (24) commandant les déplacements angulaires de la bague de commande (20) à partir de la position d'une roue à colonne de rattrapante (15).Mechanism according to one of the preceding claims, characterized in that it comprises an isolation rocker (24) controlling the angular displacements of the control ring (20) from the position of a split-second column wheel. (15). Mécanisme d'isolation selon l'une des revendications précédentes, caractérisé par le fait qu'il comporte au moins deux bielles (26) reliant la bague de commande à au moins deux pièces mobiles (27, 28, 29).Insulation mechanism according to one of the preceding claims, characterized in that it comprises at least two connecting rods (26) connecting the control ring to at least two moving parts (27, 28, 29). Mécanisme selon l'une des revendications précédentes, caractérisé par le fait que chaque pièce mobile (27, 28, 29) comporte un premier bras (27) solidaire de sa partie médiane (28) et un second bras (29) s'étendant à partir d'une extrémité de la partie médiane (28), ce second bras étant pivoté par son extrémité libre sur une partie fixe.Mechanism according to one of the preceding claims, characterized in that each movable piece (27, 28, 29) comprises a first arm (27) integral with its middle part (28) and a second arm (29) extending to from one end of the middle part (28), this second arm being pivoted by its free end on a fixed part. Mécanisme selon la revendication 6, caractérisé par le fait que l'extrémité libre du premier bras (27) de la partie mobile (27, 28, 29) est pivotée sur l'extrémité d'une bielle (26), l'autre extrémité de cette bielle (26) étant pivotée sur la bague de commande (20).Mechanism according to claim 6, characterized in that the free end of the first arm (27) of the movable part (27, 28, 29) is pivoted on the end of a connecting rod (26), the other end of this connecting rod (26) being pivoted on the control ring (20). Mécanisme selon l'une des revendications 1 à 4, caractérisé par le fait que les pièces mobiles (30) comportent sur l'une de leurs faces chacune deux goupilles (31) traversant des fentes oblongues obliques (32) pratiquées dans la bague de commande (33) et engagées dans des fentes oblongues radiales (34) d'une partie fixe du mouvement.Mechanism according to one of claims 1 to 4, characterized in that the movable parts (30) have on one of their faces each two pins (31) through oblique oblong slots (32) formed in the control ring (33) and engaged in radial oblong slots (34) of a fixed part of the movement. Mécanisme selon la revendication 9, caractérisé par le fait que les pièces mobiles (30) en forme d'arc de cercle se chevauchent quelle que soit la position active ou non des mécanismes.Mechanism according to claim 9, characterized in that the movable parts (30) in the form of a circular arc overlap regardless of the active position or not the mechanisms. Mécanisme selon l'une des revendications 9 ou 10, caractérisé par le fait que deux pièces mobiles (30) comportent, sur leur face opposée à celle portant les goupilles (31), un plot (35) coopérant avec une branche d'un ressort double de rattrapante (36) pour forcer les extrémités libres de ce ressort double contre la périphérie de la roue de rattrapante (11) en position d'isolation du mécanisme.Mechanism according to one of claims 9 or 10, characterized in that two moving parts (30) comprise, on their face opposite to that carrying the pins (31), a stud (35) cooperating with a branch of a spring catenary doublet (36) for forcing the free ends of this double spring against the periphery of the split wheel (11) in the isolation position of the mechanism. Mouvement d'horlogerie mécanique comportant un mécanisme de chronographe et un mécanisme de rattrapante, caractérisé par le fait qu'il comporte un mécanisme d'isolation de rattrapante selon l'une des revendications précédentes.Mechanical clockwork comprising a chronograph mechanism and a split-second mechanism, characterized in that it comprises a split-second isolation mechanism according to one of the preceding claims. Pièce d'horlogerie comportant un mécanisme d'horlogerie selon la revendication 12.Timepiece comprising a timepiece mechanism according to claim 12.
EP15151307.4A 2014-01-16 2015-01-15 Insulating adjustment mechanism and mechanical timepiece comprising a chronograph mechanism provided with said insulating adjustment mechanism Active EP2897002B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH00053/14A CH709153A1 (en) 2014-01-16 2014-01-16 Mechanism to split insulation and mechanical timepiece having a chronograph mechanism provided with this mechanism to split insulation.

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EP2897002A2 true EP2897002A2 (en) 2015-07-22
EP2897002A3 EP2897002A3 (en) 2016-05-25
EP2897002B1 EP2897002B1 (en) 2017-05-31

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3179318A1 (en) * 2015-12-09 2017-06-14 Patek Philippe SA Genève Split time counter lever
WO2017098394A1 (en) * 2015-12-09 2017-06-15 Patek Philippe Sa Geneve Flyback mechanism
EP3182229A1 (en) * 2015-12-17 2017-06-21 Breitling AG Chronograph mechanism with fly-back hand with insulator
EP4163732A1 (en) * 2021-10-11 2023-04-12 LVMH Swiss Manufactures SA Clock clutch mechanism

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US474100A (en) * 1892-05-03 beymond
CH4333A (en) * 1891-12-28 1892-04-15 Adrien Reymond Split-second insulator
JPS5041917Y1 (en) * 1970-03-28 1975-11-28
EP2085832B1 (en) * 2008-02-04 2013-04-10 Blancpain SA. Chronograph device with friction coupling

Non-Patent Citations (1)

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Title
None

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3179318A1 (en) * 2015-12-09 2017-06-14 Patek Philippe SA Genève Split time counter lever
WO2017098394A1 (en) * 2015-12-09 2017-06-15 Patek Philippe Sa Geneve Flyback mechanism
EP3182229A1 (en) * 2015-12-17 2017-06-21 Breitling AG Chronograph mechanism with fly-back hand with insulator
EP4163732A1 (en) * 2021-10-11 2023-04-12 LVMH Swiss Manufactures SA Clock clutch mechanism

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EP2897002B1 (en) 2017-05-31
CH709153A1 (en) 2015-07-31
EP2897002A3 (en) 2016-05-25

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