EP3179318A1 - Split time counter lever - Google Patents

Split time counter lever Download PDF

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Publication number
EP3179318A1
EP3179318A1 EP15198587.6A EP15198587A EP3179318A1 EP 3179318 A1 EP3179318 A1 EP 3179318A1 EP 15198587 A EP15198587 A EP 15198587A EP 3179318 A1 EP3179318 A1 EP 3179318A1
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EP
European Patent Office
Prior art keywords
lever
split
isolation
catch
clamps
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP15198587.6A
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German (de)
French (fr)
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EP3179318B1 (en
Inventor
Marc Lemonnier
Bertrand VALLET
Alexandre BENVEGNIN
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Patek Philippe SA Geneve
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Patek Philippe SA Geneve
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Priority to EP15198587.6A priority Critical patent/EP3179318B1/en
Publication of EP3179318A1 publication Critical patent/EP3179318A1/en
Application granted granted Critical
Publication of EP3179318B1 publication Critical patent/EP3179318B1/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 catch-up lever for equipping a catch-up mechanism.
  • the split-second mechanism is a mechanism complementary to the chronograph mechanism for driving a second hand-second hand called a split-seconds hand or simply a catch-up.
  • the rattrapante or rattrapante needle can move while remaining superimposed on the first chronograph hand, can be stopped without the chronograph hand is, and then returned to a position where it is again superimposed on the chronograph hand in walk and finally can be stopped and reset at the same time as the chronograph hand.
  • the catch-up mechanism thus makes it possible to display several successive times measured from the same origin, the reading time being able to be overtaken without disturbing the measurement.
  • the split-second needle is driven on the axis of the split-second wheel which is pivoted in the chronograph axis of the chronograph wheel.
  • the locking or indexing of the split-seconds hand and the chronograph hand driven on the chronograph axis is effected by means of a split-second lever pivoted on the split-seconds wheel. and a catch-up heart integral with the chronograph axis.
  • Known override mechanisms are generally controlled by a pusher acting on a split-column wheel and comprise a split-second gripper comprising two arms for locking the split-seconds wheel and two spouts cooperating with the split-column wheel.
  • a pusher acting on a split-column wheel and comprise a split-second gripper comprising two arms for locking the split-seconds wheel and two spouts cooperating with the split-column wheel.
  • the split-second lever is constantly in contact with the split-second core and slides or rolls on said split-second core when the split-second wheel is blocked and the split-second core rotates driven by the axis. chronograph.
  • the passage of the tip of the heart of the rattrapante causes a variation of amplitude and consequently a significant energy consumption.
  • isolation mechanisms for isolating the catch-up lever of the jumper heart when the tweezers clamp blocks the mobile rattrapante.
  • These mechanisms generally include an insulating wheel pivoting on the split shaft and provided with a pin for isolating the split lever.
  • This isolation wheel is actuated to the closing of the splitter gripper by means of an isolation arm (or an octopus insulation) controlled by the split-column wheel.
  • an isolation mechanism it is possible to limit the amplitude consumption of the split-second lever when the split-second gripper is closed.
  • the addition of a pivoting isolation wheel on the split axis increases the thickness of the movement.
  • the isolation wheel actuated by its arm or control octopus is subjected to radial forces. These efforts are necessary to overcome the force of the catch-up lever but result in longitudinal deformations on the split-second axis (bending deformations). These deformations are such that, in general, in an insulated splitter mechanism, the split-second wheel must be pivoted in a jumper bridge to limit these deformations. The size of the mechanism is further increased.
  • concentric isolation splitters have been developed.
  • the isolator element for pivoting the split lever in its isolated position is essentially concentric with the split wheel but is not pivoted on the split axis.
  • the forces exerted on said insulator element in order to overcome the force of the catch-up lever during the insulation are not transmitted to the splitter shaft.
  • the concentric isolator element must be arranged and shaped to cooperate with the catch-up lever regardless of the locking position of the split wheel, which can make it complex and cumbersome.
  • the object of the present invention is to provide a catch-up lever for equipping an insulated split-back mechanism.
  • the object of the present invention is to provide a catch-up lever intended to equip a split-off mechanism with concentric insulation and whose arrangement makes it possible to ensure the optimal and safe operation of the split-second mechanism, especially during the insulation, while saving space and volume occupied by the split-second mechanism.
  • the present invention relates to a catch-up lever intended to equip a catch-up mechanism further comprising a split-second wheel and a split-second core characterized in that said split-lever comprises a first lever and a second lever, each intended to be pivoted on the split wheel and articulated to one another so that the pivoting of the second lever causes the pivoting of the first lever, said first lever carrying the active end of the split lever intended to cooperate with the catch-up core of the catch-up mechanism.
  • the present invention also relates to a catch-up mechanism provided with a catch-up lever as above and a chronograph mechanism provided with such a catch-up mechanism.
  • the catch-up lever according to the invention is intended to equip a catch-up mechanism, and in particular an insulated split-back mechanism.
  • the split-second mechanism illustrated in the figures is an insulated split-back mechanism intended to equip a traditional chronograph mechanism.
  • the chronograph mechanism comprises in particular a chronograph wheel and a chronograph heart integral with a chronograph axis. Said chronograph axis still carries a chronograph hand.
  • the catch-up mechanism comprises a catch-1 heart driven on the chronograph axis of the chronograph mechanism and a split-second wheel 3 whose split-axis 2 pivots traditionally in said chronograph axis.
  • the split lever according to the invention composed of a first lever 4 and an isolation lever 25, both pivoted on the split wheel 3.
  • the first lever 4 can be pivotally mounted around a first pin 5 itself driven into the split wheel 3 while the isolation lever 25 can be pivotally mounted around a second post 26 itself driven into the split wheel 3.
  • the first lever 4 replaces a conventional split lever and carries the active end 12 of the split lever according to the invention.
  • the isolation lever 25 is articulated to the first lever 4 and is arranged to ensure the isolation of the split mechanism in critical cases.
  • the split-second axis 2 of the split-second wheel 3 still carries a split-second needle (not shown) which, seen from the dial side of the chronograph mechanism, is placed on the chronograph hand.
  • the first lever 4 comprises a first arm 6 carrying at its end a pin 7 intended to cooperate with the free end 8 of a retractor lever spring 9 fixed in the board of the split wheel 3 by means of a screw 10 for example.
  • the first lever 4 further comprises a second arm 11 whose end constitutes the active end 12 of the split lever according to the invention intended to cooperate with the catch-up core 1.
  • the active end 12 of the split lever has a planar portion perpendicular to the plane of said lever 4.
  • the active end 12 carries an indexing roller 16 pivotally mounted around a first pin 17 itself driven into said active end 12.
  • Said first ankle 17 forms an axis of rotation perpendicular to the plane of the first lever 4 for the indexing roller 16 and is driven into said first lever 4 so that said indexing roller 16 substantially exceeds the plane portion 15 in the longitudinal axis of the first lever and of so that the flat portion 15 extends substantially on either side of said indexing roller 16.
  • the flat portion 15 may consist of a planar face coming from a piece, such as a tile or a ruby palette by example or two planar faces placed on either side of the indexing roller 16.
  • the references 15 to 17 are illustrated on the figure 1 only. Only the reference 12 indicating the active end of the first lever 4 is illustrated in the rest of the figures. It is obvious that the active end 12 of the split lever according to the invention could have any other suitable form.
  • the illustrated split-second mechanism furthermore conventionally comprises locking clamps 18 intended to cooperate with the split-seconds wheel 3 to block and release the latter.
  • the locking clamps 18 comprise two intersecting locking arms pivoting at their point of intersection A on a bridge of the chronograph movement between a first open position in which the split wheel 3 is free ( Figures 1 to 4 ) and a second closed position in which the locking clamps 18 cooperate with the split wheel 3 to immobilize it.
  • the free end of the locking clamps 18 is intended to cooperate with the toothing of the split wheel 3 to immobilize it in the closed position of said clamping clamps 18.
  • said free end of the clamps blocking member 18 may have a notched profile as illustrated in the figures.
  • the clamping clamps 18 are integral with a pair of pivoting beakers 19 also at A and arranged to cooperate with a split-second column wheel 20 to control the pivoting of the clamping clamps 18.
  • the locking clamps 18 When the beakers 19 rest against columns of the split-column wheel 20, the locking clamps 18 are in the open position ( Figures 1 to 4 ) while when the nozzles 19 are between the columns of the wheel 20, the clamping clamps 18 are in the closed position and the split-second wheel 3 is immobilized ( Figures 5 to 12 ).
  • the split-column wheel 20 is pivotally mounted on a bridge or the plate of the chronograph mechanism and is controlled by a control mechanism (not shown) which can be actuated by the user by means of a push-button, for example, when the latter wants to measure an intermediate time or catch up with the measurement of the chronograph hand.
  • a control mechanism (not shown) which can be actuated by the user by means of a push-button, for example, when the latter wants to measure an intermediate time or catch up with the measurement of the chronograph hand.
  • This control mechanism is not illustrated and will not be described in more detail.
  • the split-second mechanism further comprises an insulation mechanism of the concentric type.
  • This isolation mechanism comprises insulating clamps 21 formed of two intersecting arms and pivoted at their intersection on a bridge or the plate of the chronograph mechanism.
  • the isolation clamps 21 are arranged to pivot between a first open position (the two arms of the isolation clamps are spaced apart from each other) and a second closed position (the two arms of the isolation clamps are brought together one of the other). In their closed position, the isolation clamps 21 cooperate with the split lever and in particular the first lever 4 to rotate it into a position in which its active end 12 is no longer in contact with the split core 1 whatever either in the position of the said second catcher core 1. In this closed position of the isolation clamps 21, the catch-up lever is thus isolated from the catcher core 1 which can pivot without coming into contact with the active end 12 of the first lever 4.
  • the isolation clamps 21 are pivoted at A concentrically to the clamping clamps 18 and each of the arms forming the isolation clamps 21 is integral with one of the jaws 19.
  • the locking clamps 18 are flexible and are carried by the isolation clamps 21.
  • each arm of the clamping clamps 18 is attached to an arm of the isolation clamps 21 by means of two pins 18b for example.
  • each of the arms of the isolation clamps 21 has an active end 22 of circular shape and the isolation clamps 21 are arranged so that said active ends 22 are concentric with each other. the retractor axis 2 when the isolation clamps 21 are in their second closed position.
  • the first lever 4 of the split lever comprises a protuberance arranged to cooperate with the isolation clamps 21 in their closed position so that a support of the isolation clamps 21 on the protrusion causes the pivoting of the first lever 4 in a position in which the active end 12 of the shifter lever is no longer in contact with the split core 1.
  • the protrusion is a first insulation roller 13 pivotally mounted on the first arm 6 of said first lever 4.
  • the isolation clamps 21 are subjected to the action of a elastic force which tends to move them in their closed position.
  • the elastic force consists of an insulating spring 23 pivoted at A concentrically to the insulating clamps 21 and comprising two elastic arms respectively acting on one arm of the insulating clamps 21.
  • the Figures 1 to 4 illustrate the catch-up mechanism at rest, that is to say when the split-second needle and the chronograph hand are superimposed.
  • the spouts 19 are each resting against a column of the split-second column wheel 20.
  • the locking clamps 18 and the isolation clamps 21 are in their open position.
  • the split lever is resting on the catcher core 1 by means of its first lever 4, the indexing roller 16 of the active end 12 of the split lever being in the recess between the shoulders 1b of the heart 1 while the planar portions 15 of said active end 12 bear on said shoulders 1b, thus ensuring the indexing of the split-second needle with the chronograph hand.
  • the split-column wheel 20 pivots by one step.
  • the slats 19 then each fall into a space between two columns of said split-second column wheel 20 ( figure 5 ).
  • the fall of the nozzles 19 causes the pivoting of the locking clamps 18 and the isolation clamps 21 from their open position in their closed position.
  • the catch-up mechanism illustrated is preferably arranged so that the locking of the split wheel 3 and the insulation of the split-lever takes place in two successive phases, the locking clamps 18 reaching their closed position before the isolation clamps. 21 do not reach theirs.
  • a first phase of blocking illustrated in the figure 5 the locking clamps 18 have already reached their closed position, immediately after the beginning of the fall of the slats 19 between the columns of the split-column wheel 20 and thus immobilize the split-second wheel 3 while the insulation clamps 21 have not yet pivoted the split lever or its first lever 4.
  • the split-second needle is stopped.
  • the nozzles 19 continue their fall between the columns of the split-column wheel 20 and the isolation clamps 21 continue their rotation to reach their closed position in which they bear against the first insulating roller 13 of the first lever 4 and rotate said lever.
  • the first lever 4 and the active end 12 of the split lever therefore start to move away from the split-second core 1.
  • the split-second wheel 3 is always blocked by the clamping clamps 18.
  • the flexibility of said clamping clamps 18 compensates for their additional rotation (since they are carried by the isolation clamps 21) and allows them to remain in abutment against the split wheel 3 without risk of breakage even if the radial force of the clamping clamps 18 on the split wheel 3 increases.
  • the catch-up mechanism reaches its blocking position and complete isolation during a third phase illustrated in FIG. figure 7a .
  • the isolation clamps 21 pivot until they come into abutment against two eccentric 24.
  • This position in abutment against the eccentric 24 corresponds then in the closed position of the isolation clamps 21 and clamping clamps 18.
  • the position of the eccentric 24 can be adjusted so that in this closed position of the isolation clamps 21, the split lever and in particular the first lever 4 is in a position in which it is completely isolated from the split core 1 which can pivot freely without contact with the active end 12 of the split lever and its indexing roller 16 in particular.
  • the split-second mechanism can be reset to zero with respect to the chronograph hand, that is to say that the split-second needle can be returned to its indexed position in which it is superimposed on the chronograph hand.
  • the actuation of the control mechanism by the user causes the rotation of a pitch of the split-second column wheel 20.
  • the spouts 19 come out of their housing between two columns to return each resting on a column of the column wheel 20.
  • the locking clamps 18 and the isolation clamps 21 then pivot and return to their open position.
  • the reindexing of the split-second needle on the chronograph hand is done in two steps. First, the isolation clamps 21 release the split lever and the first lever 4, the active end 12 of which returns to contact with the split-second core 1 under the action of its return spring 9. Then, the clamps of FIG. blocking 18 release the split wheel 3.
  • the catch-up mechanism has returned to its rest position and the split-second needle and the chronograph hand are again superimposed.
  • the isolation clamps 21 and their circular active end 22 do not form a complete circle around the split-second wheel 3 when said isolation clamps 21 are in their closed position.
  • the split lever according to the invention comprises, in addition to the first lever 4, an isolation lever 25 pivoted on the split wheel 3.
  • the isolation lever 25 can be pivotally mounted around a second pin 26 itself driven into the split wheel 3.
  • the isolation lever 25 carries at one end an isolation pin 27 arranged to move in a slot 14 formed in the second arm 11 of the first lever 4.
  • the other end of the isolation lever 25 has a protrusion which in the illustrated embodiment is constituted by a second insulating roller 28 pivoted on said isolation lever 25.
  • the second insulating roller 28 is arranged to cooperate with the grippers. insulation 21 in their closed position.
  • the isolation lever 25, its isolation pin 27 and the light 14 provided on the first lever 4 are arranged so that a support of the isolation clamps 21 on the second insulation roller 28 causes the pivoting of the isolation lever 25 around the second pin 26 and the pivoting of the first lever 4 in a position in which the latter is no longer in contact with the catcher core 1.
  • the isolation lever 25 and the first lever 4, and in particular the first and second insulating rollers 13, 28 are arranged so that there is always at least one of the first and second insulating rolls 13, 28 in contact with the isolation clamps 21 when they are in their closed position.
  • the active end 12 of the catch-up lever according to the invention formed by the first lever 4 and the isolation lever 25 can be isolated from the jumper core 1 when measuring an intermediate time whatever the position of the split wheel 3 when it is blocked by the locking clamps 18.
  • the figure 8 illustrates the case where the trigger of the split-second mechanism (measurement of an intermediate time), the split-seconds wheel 3 and the first lever 4 are in a position in which the first insulation roller 13 is in the dead zone C and is therefore not attainable by the isolation clamps 21 in the closed position.
  • the isolation clamps 21 pivoting in their closed position come into contact with the second insulation roller 28 which pivots the isolation lever 25.
  • the pivoting of said isolation lever 25 causes the displacement of the insulation pin 27 in the slot 14 of the first lever 4 and consequently the pivoting of said first lever 4 in a position in which it is no longer in contact with the catcher core 1.
  • the first lever 4, the isolation lever 25 and the first and second isolation rolls 13, 28 are arranged so that the insulation takes place even when one of said first and second isolation rollers 13 , 28 comes to bear against the limit of an active end 22 of the isolation clamps 21 and therefore to the limit of a dead zone C or D (first insulation roller 13 at the limit of the insulation clamps 21 in the figures 10 and 11 , and second isolation roller 28 limits insulation clamps 21 in the figures 9 and 12 ).
  • an isolation mechanism as described above makes it possible to limit or even eliminate the radial stresses on the split-seconds axis by offering concentric insulation with respect to the split-second wheel. It is thus no longer necessary to rotate the split-seconds axis in a dedicated bridge or between two dedicated bridges.
  • the split-second mechanism allows complete isolation of the lever which is no longer in contact with the split-second core when measuring an intermediate time, which makes it possible to limit the variation in the amplitude of the movement (more need to pass the tip of the heart for the split-seconds lever).
  • the isolation mechanism makes it possible to maintain the dimensions of a conventional non-isolator override mechanism since, by not using an isolation wheel, no additional thickness is added to the mechanism (the isolation clamps working in the thickness of the splitter lever).
  • the isolation clamps are coaxially pivoted to the clamping clamps and are controlled simultaneously, the clamps being carried by the isolation clamps. It goes without saying that, alternatively, the isolation clamps could be pivoted to another point of the movement, independently of the locking clamps. Similarly, said insulation clamps could be controlled by the clamping clamps or directly controlled by the split-column wheel.
  • the locking clamps are well known to those skilled in the art and could have any form appropriate to their function and could be completely independent of the isolation clamps.
  • the shape of the active end of the override lever described above is an example. It is obvious that said active end could have any suitable shape.
  • the articulation between the first lever 4 and the isolation lever 25 forming the split lever according to the invention can take any form appropriate for the pivoting of the second causes the pivoting of the first.
  • the means allowing the split-lever to cooperate with the isolation mechanism of the override mechanism described above may also take any suitable form, the roller being only one example among others.
  • the catch-up lever according to the invention is therefore characterized in that it comprises a first lever (4) and at least one second lever (25) each pivoted on the split-seconds wheel and articulated to each other. so that the pivoting of the second lever causes the pivoting of the first lever.
  • the first lever carries the active end of the split lever intended to cooperate with a split-second core for indexing the split-second needle.
  • the splitter lever is intended to cooperate with a concentric type split-lever lever isolation mechanism.
  • each of the first and second levers comprises at least one member intended to cooperate with an element of the isolation mechanism concentric like the insulation clamps described above.
  • the first and second levers are also arranged on the split wheel and with respect to one another so that, during insulation, the split-lever is pivoted into its isolated position (the active end n ' is more in contact with the catch-up core) regardless of the position of the split-second wheel at the time of the insulation.
  • the split-second isolation mechanism while ensuring complete isolation of the split-lever regardless of the position of the split-second wheel during insulation.
  • the isolation clamps it is not necessary for the isolation clamps to form a closed complete circle concentric with the split-second wheel in their closed isolation position, the split-second lever according to the invention. and its two levers ensure perfect insulation even in the dead zones of the insulation clamps. The size of the isolation mechanism is thus reduced.

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

Abstract

La présente invention a pour objet un levier de rattrapante destiné à équiper un mécanisme de rattrapante et en particulier un mécanisme de rattrapante à isolation concentrique et comprenant en outre une roue de rattrapante (3) et un coeur de rattrapante (1). Ledit levier de rattrapante comprend un premier levier (4) et un second levier (25) destinés chacun à être pivotés sur la roue de rattrapante (3) et articulés l'un à l'autre de sorte que le pivotement du second levier (25) entraîne le pivotement du premier levier (4), ledit premier levier (4) portant l'extrémité active (12) du levier de rattrapante destinée à coopérer avec le coeur de rattrapante (1) du mécanisme de rattrapante.The subject of the present invention is a catch-up lever intended to equip a catch-up mechanism and in particular a split-off mechanism with concentric insulation and furthermore comprising a catch-up wheel (3) and a catch-up core (1). Said catch-up lever comprises a first lever (4) and a second lever (25) each intended to be pivoted on the split wheel (3) and articulated to each other so that the pivoting of the second lever (25) ) causes the pivoting of the first lever (4), said first lever (4) carrying the active end (12) of the catch-up lever intended to cooperate with the catch-up core (1) of the split-second mechanism.

Description

La présente invention concerne un levier de rattrapante destiné à équiper un mécanisme de rattrapante.The present invention relates to a catch-up lever for equipping a catch-up mechanism.

Le mécanisme de rattrapante est un mécanisme complémentaire au mécanisme de chronographe permettant d'entraîner une deuxième aiguille trotteuse appelée aiguille de rattrapante ou simplement rattrapante. La rattrapante ou aiguille de rattrapante peut se mouvoir en restant superposée à la première aiguille de chronographe, peut être arrêtée sans que l'aiguille de chronographe le soit, puis ramenée dans une position où elle est à nouveau superposée à l'aiguille de chronographe en marche et enfin peut être arrêtée et remise à zéro en même temps que l'aiguille de chronographe. Le mécanisme de rattrapante permet donc l'affichage de plusieurs temps successifs mesurés à partir de la même origine, le temps de lecture pouvant être rattrapé sans perturber la mesure.The split-second mechanism is a mechanism complementary to the chronograph mechanism for driving a second hand-second hand called a split-seconds hand or simply a catch-up. The rattrapante or rattrapante needle can move while remaining superimposed on the first chronograph hand, can be stopped without the chronograph hand is, and then returned to a position where it is again superimposed on the chronograph hand in walk and finally can be stopped and reset at the same time as the chronograph hand. The catch-up mechanism thus makes it possible to display several successive times measured from the same origin, the reading time being able to be overtaken without disturbing the measurement.

L'aiguille de rattrapante est chassée sur l'axe de la roue de rattrapante qui est pivoté dans l'axe de chronographe de la roue de chronographe. Dans les mécanismes de rattrapante connus, le verrouillage ou indexage de l'aiguille de rattrapante et de l'aiguille de chronographe chassée sur l'axe de chronographe s'effectue par l'intermédiaire d'un levier de rattrapante pivoté sur la roue de rattrapante et d'un coeur de rattrapante solidaire de l'axe de chronographe.The split-second needle is driven on the axis of the split-second wheel which is pivoted in the chronograph axis of the chronograph wheel. In the known catch-up mechanisms, the locking or indexing of the split-seconds hand and the chronograph hand driven on the chronograph axis is effected by means of a split-second lever pivoted on the split-seconds wheel. and a catch-up heart integral with the chronograph axis.

Les mécanismes de rattrapante connus sont en général commandés par un poussoir agissant sur une roue à colonnes de rattrapante et comprennent une pince de rattrapante comportant deux bras permettant de bloquer la roue de rattrapante et deux becs coopérant avec la roue à colonnes de rattrapante. Lorsque les becs de la pince de rattrapante sont en appui contre des colonnes de la roue à colonnes, les deux bras de la pince de rattrapante sont écartés et la roue de rattrapante est libérée. Le mobile de rattrapante est alors solidaire du mobile de chronographe grâce au levier de rattrapante qui coopère avec le coeur de rattrapante et les aiguilles de rattrapante et de chronographe sont superposées. Lorsque les becs de la pince de rattrapante tombent entre deux colonnes de la roue à colonnes, les bras de la pince se ferment et immobilisent la roue de rattrapante ce qui arrête l'aiguille de rattrapante. L'aiguille de chronographe continue sa rotation librement.Known override mechanisms are generally controlled by a pusher acting on a split-column wheel and comprise a split-second gripper comprising two arms for locking the split-seconds wheel and two spouts cooperating with the split-column wheel. When the slats of the tweezers are resting against columns of the column wheel, the two arms of the tweezers are separated and the split wheel is released. The rattrapante mobile is then secured to the chronograph mobile thanks to the split lever that cooperates with the split-seconds heart and the split-seconds and chronograph hands are superimposed. When the jaws of the tweezers fall between two columns of the column wheel, the arms of the clamp are closed and immobilize the split wheel which stops the catwalk needle. The chronograph hand continues its rotation freely.

Dans les mécanismes de rattrapante classiques sans isolation, le levier de rattrapante est constamment en contact avec le coeur de rattrapante et glisse ou roule sur ledit coeur de rattrapante lorsque la roue de rattrapante est bloquée et que le coeur de rattrapante tourne entraîné par l'axe de chronographe. Le passage de la pointe du coeur de rattrapante entraîne une variation d'amplitude et par conséquent une consommation d'énergie importante.In the conventional non-isolation override mechanisms, the split-second lever is constantly in contact with the split-second core and slides or rolls on said split-second core when the split-second wheel is blocked and the split-second core rotates driven by the axis. chronograph. The passage of the tip of the heart of the rattrapante causes a variation of amplitude and consequently a significant energy consumption.

Il a donc été développé des mécanismes d'isolation permettant d'isoler le levier de rattrapante du coeur de rattrapante lorsque la pince de rattrapante bloque le mobile de rattrapante. Ces mécanismes comprennent en général une roue d'isolation pivotant sur l'axe de rattrapante et munie d'une goupille pour isoler le levier de rattrapante. Cette roue d'isolation est actionnée à la fermeture de la pince de rattrapante par le biais d'un bras d'isolation (ou d'une pieuvre d'isolation) commandé par la roue à colonnes de rattrapante. Ainsi, avec un tel mécanisme d'isolation, il est possible de limiter la consommation d'amplitude du levier de rattrapante lorsque la pince de rattrapante est fermée. Cependant, l'ajout d'une roue d'isolation pivotant sur l'axe de rattrapante augmente l'épaisseur du mouvement. De plus, lors de l'isolation, la roue d'isolation actionnée par son bras ou sa pieuvre de commande est soumise à des efforts radiaux. Ces efforts sont nécessaires pour vaincre la force du levier de rattrapante mais se traduisent par des déformations longitudinales sur l'axe de rattrapante (déformations en flexion). Ces déformations sont telles qu'en général, dans un mécanisme de rattrapante à isolation, la roue de rattrapante doit être pivotée dans un pont de rattrapante pour limiter ces déformations. L'encombrement du mécanisme s'en voit encore augmenté.It has therefore been developed isolation mechanisms for isolating the catch-up lever of the jumper heart when the tweezers clamp blocks the mobile rattrapante. These mechanisms generally include an insulating wheel pivoting on the split shaft and provided with a pin for isolating the split lever. This isolation wheel is actuated to the closing of the splitter gripper by means of an isolation arm (or an octopus insulation) controlled by the split-column wheel. Thus, with such an isolation mechanism, it is possible to limit the amplitude consumption of the split-second lever when the split-second gripper is closed. However, the addition of a pivoting isolation wheel on the split axis increases the thickness of the movement. In addition, during insulation, the isolation wheel actuated by its arm or control octopus is subjected to radial forces. These efforts are necessary to overcome the force of the catch-up lever but result in longitudinal deformations on the split-second axis (bending deformations). These deformations are such that, in general, in an insulated splitter mechanism, the split-second wheel must be pivoted in a jumper bridge to limit these deformations. The size of the mechanism is further increased.

Pour éviter ces inconvénients, des mécanismes de rattrapante à isolation concentrique ont été développés. Dans ces mécanismes, l'élément isolateur permettant de faire pivoter le levier de rattrapante dans sa position isolée est essentiellement concentrique à la roue de rattrapante mais n'est pas pivoté sur l'axe de rattrapante. Ainsi, les efforts exercés sur ledit élément isolateur pour vaincre la force du levier de rattrapante lors de l'isolation ne sont pas transmis à l'axe de rattrapante. Néanmoins, l'élément isolateur concentrique doit être agencé et conformé pour coopérer avec le levier de rattrapante quelle que soit la position de blocage de la roue de rattrapante, ce qui peut le rendre complexe et encombrant.To avoid these drawbacks, concentric isolation splitters have been developed. In these mechanisms, the isolator element for pivoting the split lever in its isolated position is essentially concentric with the split wheel but is not pivoted on the split axis. Thus, the forces exerted on said insulator element in order to overcome the force of the catch-up lever during the insulation are not transmitted to the splitter shaft. Nevertheless, the concentric isolator element must be arranged and shaped to cooperate with the catch-up lever regardless of the locking position of the split wheel, which can make it complex and cumbersome.

Le but de la présente invention est de réaliser un levier de rattrapante destiné à équiper un mécanisme de rattrapante à isolation. En particulier, le but de la présente invention est de réaliser un levier de rattrapante destiné à équiper un mécanisme de rattrapante à isolation concentrique et dont l'agencement permet d'assurer le fonctionnement optimal et sûr du mécanisme de rattrapante, notamment lors de l'isolation, tout en économisant l'espace et le volume occupé par le mécanisme de rattrapante.The object of the present invention is to provide a catch-up lever for equipping an insulated split-back mechanism. In particular, the object of the present invention is to provide a catch-up lever intended to equip a split-off mechanism with concentric insulation and whose arrangement makes it possible to ensure the optimal and safe operation of the split-second mechanism, especially during the insulation, while saving space and volume occupied by the split-second mechanism.

La présente invention a pour objet un levier de rattrapante destiné à équiper un mécanisme de rattrapante comprenant en outre une roue de rattrapante et un coeur de rattrapante caractérisé par le fait que ledit levier de rattrapante comprend un premier levier et un second levier destinés chacun à être pivotés sur la roue de rattrapante et articulés l'un à l'autre de sorte que le pivotement du second levier entraîne le pivotement du premier levier, ledit premier levier portant l'extrémité active du levier de rattrapante destinée à coopérer avec le coeur de rattrapante du mécanisme de rattrapante.The present invention relates to a catch-up lever intended to equip a catch-up mechanism further comprising a split-second wheel and a split-second core characterized in that said split-lever comprises a first lever and a second lever, each intended to be pivoted on the split wheel and articulated to one another so that the pivoting of the second lever causes the pivoting of the first lever, said first lever carrying the active end of the split lever intended to cooperate with the catch-up core of the catch-up mechanism.

La présente invention a également pour objet un mécanisme de rattrapante muni d'un levier de rattrapante tel que ci-dessus et un mécanisme de chronographe muni d'un tel mécanisme de rattrapante.The present invention also relates to a catch-up mechanism provided with a catch-up lever as above and a chronograph mechanism provided with such a catch-up mechanism.

Les figures annexées illustrent schématiquement une forme d'exécution d'un levier de rattrapante selon l'invention intégré dans un mécanisme de rattrapante à isolation.

  • Les figures 1 à 4 illustrent un mécanisme de rattrapante comprenant le levier de rattrapante selon l'invention dans une position de repos, vu de dessus, de dessous, en vue éclatée et en perspective respectivement.
  • La figure 5 illustre le mécanisme de rattrapante des figures 1 à 4 dans une première phase de blocage.
  • La figure 6 illustre le mécanisme de rattrapante dans une deuxième phase marquant le début de l'isolation.
  • La figure 7a illustre le mécanisme de rattrapante dans une troisième phase d'isolation complète.
  • La figure 7b illustre le mécanisme de rattrapante après isolation complète du levier de rattrapante selon l'invention.
  • La figure 8 illustre le mécanisme de rattrapante dans un cas particulier de la troisième phase d'isolation.
  • Les figures 9 à 12 illustrent chacune le mécanisme de rattrapante et le levier de rattrapante selon l'invention dans un cas limite de la troisième phase d'isolation.
The appended figures schematically illustrate an embodiment of a splitter lever according to the invention integrated in an insulating splitter mechanism.
  • The Figures 1 to 4 illustrate a catch-up mechanism comprising the catch-up lever according to the invention in a rest position, seen from above, from below, in exploded view and in perspective respectively.
  • The figure 5 illustrates the catch-up mechanism of Figures 1 to 4 in a first phase of blocking.
  • The figure 6 illustrates the catch-up mechanism in a second phase marking the beginning of the isolation.
  • The figure 7a illustrates the catch-up mechanism in a third phase of complete isolation.
  • The figure 7b illustrates the catch-up mechanism after complete isolation of the split lever according to the invention.
  • The figure 8 illustrates the catch-up mechanism in a particular case of the third isolation phase.
  • The Figures 9 to 12 each illustrate the catch-up mechanism and the catch-up lever according to the invention in a limiting case of the third insulation phase.

Le levier de rattrapante selon l'invention est destiné à équiper un mécanisme de rattrapante, et notamment un mécanisme de rattrapante à isolation. Le mécanisme de rattrapante illustré aux figures est un mécanisme de rattrapante à isolation destiné à équiper un mécanisme de chronographe traditionnel. De manière connue, le mécanisme de chronographe comprend notamment une roue de chronographe et un coeur de chronographe solidaire d'un axe de chronographe. Ledit axe de chronographe porte encore une aiguille de chronographe. Ces éléments (non illustrés) font partie d'un mécanisme de chronographe traditionnel et ne seront pas décrits plus en détail ici.The catch-up lever according to the invention is intended to equip a catch-up mechanism, and in particular an insulated split-back mechanism. The split-second mechanism illustrated in the figures is an insulated split-back mechanism intended to equip a traditional chronograph mechanism. In known manner, the chronograph mechanism comprises in particular a chronograph wheel and a chronograph heart integral with a chronograph axis. Said chronograph axis still carries a chronograph hand. These elements (not shown) are part of a traditional chronograph mechanism and will not be described in more detail here.

En particulier, le mécanisme de rattrapante comprend un coeur de rattrapante 1 chassé sur l'axe de chronographe du mécanisme de chronographe et une roue de rattrapante 3 dont l'axe de rattrapante 2 pivote traditionnellement dans ledit axe de chronographe.In particular, the catch-up mechanism comprises a catch-1 heart driven on the chronograph axis of the chronograph mechanism and a split-second wheel 3 whose split-axis 2 pivots traditionally in said chronograph axis.

Sur la roue de rattrapante 3 est pivoté le levier de rattrapante selon l'invention composé d'un premier levier 4 et d'un levier d'isolation 25, tous deux pivotés sur la roue de rattrapante 3. Par exemple et comme illustré aux figures, le premier levier 4 peut être monté pivotant autour d'un premier tenon 5 lui-même chassé dans la roue de rattrapante 3 tandis que le levier d'isolation 25 peut être monté pivotant autour d'un deuxième tenon 26 lui-même chassé dans la roue de rattrapante 3.On the split wheel 3 is pivoted the split lever according to the invention composed of a first lever 4 and an isolation lever 25, both pivoted on the split wheel 3. For example and as illustrated in FIGS. , the first lever 4 can be pivotally mounted around a first pin 5 itself driven into the split wheel 3 while the isolation lever 25 can be pivotally mounted around a second post 26 itself driven into the split wheel 3.

Comme on le verra plus loin, le premier levier 4 remplace un levier de rattrapante classique et porte l'extrémité active 12 du levier de rattrapante selon l'invention. Le levier d'isolation 25 est articulé au premier levier 4 et est agencé pour garantir l'isolation du mécanisme de rattrapante dans des cas critiques.As will be seen below, the first lever 4 replaces a conventional split lever and carries the active end 12 of the split lever according to the invention. The isolation lever 25 is articulated to the first lever 4 and is arranged to ensure the isolation of the split mechanism in critical cases.

De manière traditionnelle, l'axe de rattrapante 2 de la roue de rattrapante 3 porte encore une aiguille de rattrapante (non illustrée) qui, vue du côté cadran du mécanisme de chronographe, est placée sur l'aiguille de chronographe.Traditionally, the split-second axis 2 of the split-second wheel 3 still carries a split-second needle (not shown) which, seen from the dial side of the chronograph mechanism, is placed on the chronograph hand.

Le premier levier 4 comporte un premier bras 6 portant à son extrémité un tenon 7 destiné à coopérer avec l'extrémité libre 8 d'un ressort de rappel de levier de rattrapante 9 fixé dans la planche de la roue de rattrapante 3 au moyen d'une vis 10 par exemple.The first lever 4 comprises a first arm 6 carrying at its end a pin 7 intended to cooperate with the free end 8 of a retractor lever spring 9 fixed in the board of the split wheel 3 by means of a screw 10 for example.

Le premier levier 4 comporte encore un second bras 11 dont l'extrémité constitue l'extrémité active 12 du levier de rattrapante selon l'invention destinée à coopérer avec le coeur de rattrapante 1. Dans la forme d'exécution illustrée, l'extrémité active 12 du levier de rattrapante présente une portion plane 15 perpendiculaire au plan dudit levier 4. L'extrémité active 12 porte un galet d'indexage 16 monté pivotant autour d'une première cheville 17 elle-même chassée dans ladite extrémité active 12. Ladite première cheville 17 forme un axe de rotation perpendiculaire au plan du premier levier 4 pour le galet d'indexage 16 et est chassée dans ledit premier levier 4 de sorte que ledit galet d'indexage 16 dépasse sensiblement de la portion plane 15 dans l'axe longitudinal du premier levier et de sorte que la portion plane 15 s'étende sensiblement de part et d'autre dudit galet d'indexage 16. La portion plane 15 peut être constituée d'une face plane venue d'une pièce, comme une tuile ou une palette en rubis par exemple ou de deux faces planes placées de part et d'autre du galet d'indexage 16. Les références 15 à 17 sont illustrées sur la figure 1 uniquement. Seule la référence 12 indiquant l'extrémité active du premier levier 4 est illustrée sur le reste des figures. Il est évident que l'extrémité active 12 du levier de rattrapante selon l'invention pourrait avoir toute autre forme appropriée.The first lever 4 further comprises a second arm 11 whose end constitutes the active end 12 of the split lever according to the invention intended to cooperate with the catch-up core 1. In the illustrated embodiment, the active end 12 of the split lever has a planar portion perpendicular to the plane of said lever 4. The active end 12 carries an indexing roller 16 pivotally mounted around a first pin 17 itself driven into said active end 12. Said first ankle 17 forms an axis of rotation perpendicular to the plane of the first lever 4 for the indexing roller 16 and is driven into said first lever 4 so that said indexing roller 16 substantially exceeds the plane portion 15 in the longitudinal axis of the first lever and of so that the flat portion 15 extends substantially on either side of said indexing roller 16. The flat portion 15 may consist of a planar face coming from a piece, such as a tile or a ruby palette by example or two planar faces placed on either side of the indexing roller 16. The references 15 to 17 are illustrated on the figure 1 only. Only the reference 12 indicating the active end of the first lever 4 is illustrated in the rest of the figures. It is obvious that the active end 12 of the split lever according to the invention could have any other suitable form.

Le mécanisme de rattrapante illustré comprend en outre de manière traditionnelle des pinces de blocage 18 destinées à coopérer avec la roue de rattrapante 3 pour bloquer et libérer celle-ci. Les pinces de blocage 18 comprennent deux bras de blocage concourants et pivotant en leur point d'intersection A sur un pont du mouvement de chronographe entre une première position ouverte dans laquelle la roue de rattrapante 3 est libre (figures 1 à 4) et une seconde position fermée dans laquelle les pinces de blocage 18 coopèrent avec la roue de rattrapante 3 pour immobiliser celle-ci. De manière connue, l'extrémité libre des pinces de blocage 18 est destinée à coopérer avec la denture de la roue de rattrapante 3 pour immobiliser celle-ci dans la position fermée desdites pinces de blocage 18. Pour ce faire, ladite extrémité libre des pinces de blocage 18 peut présenter un profil cranté comme illustré aux figures.The illustrated split-second mechanism furthermore conventionally comprises locking clamps 18 intended to cooperate with the split-seconds wheel 3 to block and release the latter. The locking clamps 18 comprise two intersecting locking arms pivoting at their point of intersection A on a bridge of the chronograph movement between a first open position in which the split wheel 3 is free ( Figures 1 to 4 ) and a second closed position in which the locking clamps 18 cooperate with the split wheel 3 to immobilize it. In known manner, the free end of the locking clamps 18 is intended to cooperate with the toothing of the split wheel 3 to immobilize it in the closed position of said clamping clamps 18. To do this, said free end of the clamps blocking member 18 may have a notched profile as illustrated in the figures.

Les pinces de blocage 18 sont solidaires d'une paire de becs 19 pivotant également en A et agencés pour coopérer avec une roue à colonnes de rattrapante 20 pour commander le pivotement des pinces de blocage 18. Lorsque les becs 19 sont en appui contre des colonnes de la roue à colonnes de rattrapante 20, les pinces de blocage 18 sont en position ouverte (figures 1 à 4) tandis que lorsque les becs 19 se trouvent entre les colonnes de la roue à colonnes de rattrapante 20, les pinces de blocages 18 sont en position fermée et la roue de rattrapante 3 est immobilisée (figures 5 à 12).The clamping clamps 18 are integral with a pair of pivoting beakers 19 also at A and arranged to cooperate with a split-second column wheel 20 to control the pivoting of the clamping clamps 18. When the beakers 19 rest against columns of the split-column wheel 20, the locking clamps 18 are in the open position ( Figures 1 to 4 ) while when the nozzles 19 are between the columns of the wheel 20, the clamping clamps 18 are in the closed position and the split-second wheel 3 is immobilized ( Figures 5 to 12 ).

La roue à colonnes de rattrapante 20 est montée pivotante sur un pont ou la platine du mécanisme de chronographe et est commandée par un mécanisme de commande (non illustré) qui peut être actionné par l'utilisateur au moyen d'un poussoir par exemple, lorsque ce dernier veut mesurer un temps intermédiaire ou rattraper la mesure de l'aiguille de chronographe. Ce mécanisme de commande n'est pas illustré et ne sera pas décrit plus en détail.The split-column wheel 20 is pivotally mounted on a bridge or the plate of the chronograph mechanism and is controlled by a control mechanism (not shown) which can be actuated by the user by means of a push-button, for example, when the latter wants to measure an intermediate time or catch up with the measurement of the chronograph hand. This control mechanism is not illustrated and will not be described in more detail.

Le mécanisme de rattrapante comprend en outre un mécanisme d'isolation du type concentrique. Ce mécanisme d'isolation comprend des pinces d'isolation 21 formées de deux bras concourants et pivotés en leur intersection sur un pont ou la platine du mécanisme de chronographe.The split-second mechanism further comprises an insulation mechanism of the concentric type. This isolation mechanism comprises insulating clamps 21 formed of two intersecting arms and pivoted at their intersection on a bridge or the plate of the chronograph mechanism.

Les pinces d'isolation 21 sont agencées pour pivoter entre une première position ouverte (les deux bras des pinces d'isolation sont écartés l'un de l'autre) et une seconde position fermée (les deux bras des pinces d'isolation sont rapprochés l'un de l'autre). Dans leur position fermée, les pinces d'isolation 21 coopèrent avec le levier de rattrapante et notamment le premier levier 4 pour le faire pivoter dans une position dans laquelle son extrémité active 12 n'est plus en contact avec le coeur de rattrapante 1 quelle que soit la position dudit coeur de rattrapante 1. Dans cette position fermée des pinces d'isolation 21, le levier de rattrapante est donc isolé du coeur de rattrapante 1 qui peut pivoter sans entrer en contact avec l'extrémité active 12 du premier levier 4.The isolation clamps 21 are arranged to pivot between a first open position (the two arms of the isolation clamps are spaced apart from each other) and a second closed position (the two arms of the isolation clamps are brought together one of the other). In their closed position, the isolation clamps 21 cooperate with the split lever and in particular the first lever 4 to rotate it into a position in which its active end 12 is no longer in contact with the split core 1 whatever either in the position of the said second catcher core 1. In this closed position of the isolation clamps 21, the catch-up lever is thus isolated from the catcher core 1 which can pivot without coming into contact with the active end 12 of the first lever 4.

Dans la forme d'exécution illustrée, les pinces d'isolation 21 sont pivotées en A concentriquement aux pinces de blocage 18 et chacun des bras formant les pinces d'isolation 21 est venu d'une pièce avec un des becs 19. De plus, les pinces de blocage 18 sont flexibles et sont portées par les pinces d'isolation 21. Dans les figures, chacun des bras des pinces de blocage 18 est fixé à un bras des pinces d'isolation 21 au moyen de deux chevilles 18b par exemple.In the illustrated embodiment, the isolation clamps 21 are pivoted at A concentrically to the clamping clamps 18 and each of the arms forming the isolation clamps 21 is integral with one of the jaws 19. In addition, the locking clamps 18 are flexible and are carried by the isolation clamps 21. In the figures, each arm of the clamping clamps 18 is attached to an arm of the isolation clamps 21 by means of two pins 18b for example.

Selon la forme d'exécution illustrée du mécanisme de rattrapante, chacun des bras des pinces d'isolation 21 présente une extrémité active 22 de forme circulaire et les pinces d'isolation 21 sont agencées de manière à ce que lesdites extrémités actives 22 soient concentriques à l'axe de rattrapante 2 lorsque les pinces d'isolation 21 sont dans leur seconde position fermée.According to the illustrated embodiment of the split-second mechanism, each of the arms of the isolation clamps 21 has an active end 22 of circular shape and the isolation clamps 21 are arranged so that said active ends 22 are concentric with each other. the retractor axis 2 when the isolation clamps 21 are in their second closed position.

Le premier levier 4 du levier de rattrapante selon l'invention comprend une protubérance agencée pour coopérer avec les pinces d'isolation 21 dans leur position fermée de sorte qu'un appui des pinces d'isolation 21 sur la protubérance entraîne le pivotement du premier levier 4 dans une position dans laquelle l'extrémité active 12 du levier de rattrapante n'est plus en contact avec le coeur de rattrapante 1. Dans la forme d'exécution illustrée, la protubérance est un premier galet d'isolation 13 monté pivotant sur le premier bras 6 dudit premier levier 4. Ainsi, lorsque les pinces d'isolation 21 pivotent dans leur position fermée, elles viennent en appui contre le premier galet d'isolation 13 et entraînent ainsi le pivotement du premier levier 4 autour du premier tenon 5, l'extrémité active 12 du levier de rattrapante s'éloignant alors du coeur de rattrapante 1.The first lever 4 of the split lever according to the invention comprises a protuberance arranged to cooperate with the isolation clamps 21 in their closed position so that a support of the isolation clamps 21 on the protrusion causes the pivoting of the first lever 4 in a position in which the active end 12 of the shifter lever is no longer in contact with the split core 1. In the embodiment shown, the protrusion is a first insulation roller 13 pivotally mounted on the first arm 6 of said first lever 4. Thus, when the isolation clamps 21 pivot in their closed position, they bear against the first isolation roller 13 and thus cause the first lever 4 to pivot about the first pin 5, the active end 12 of the catch-up lever then moving away from the jumper core 1.

Pour assurer le contact entre les pinces d'isolation 21 et le premier galet d'isolation 13 du premier levier 4 lorsque les pinces d'isolation 21 sont en position fermée, lesdites pinces d'isolation 21 sont soumises à l'action d'une force élastique qui tend à les déplacer dans leur position fermée. Dans la forme d'exécution illustrée, la force élastique est constituée d'un ressort d'isolation 23 pivoté en A concentriquement aux pinces d'isolation 21 et comprenant deux bras élastique agissant respectivement chacun sur un bras des pinces d'isolation 21.To ensure contact between the isolation clamps 21 and the first isolation roller 13 of the first lever 4 when the isolation clamps 21 are in the closed position, said isolation clamps 21 are subjected to the action of a elastic force which tends to move them in their closed position. In the illustrated embodiment, the elastic force consists of an insulating spring 23 pivoted at A concentrically to the insulating clamps 21 and comprising two elastic arms respectively acting on one arm of the insulating clamps 21.

Le fonctionnement du mécanisme de rattrapante et notamment du mécanisme d'isolation est décrit en détail dans la suite en référence aux figures 1 à 12.The operation of the catch-up mechanism and in particular the isolation mechanism is described in detail below with reference to Figures 1 to 12 .

Les figures 1 à 4 illustrent le mécanisme de rattrapante au repos c'est-à-dire lorsque l'aiguille de rattrapante et l'aiguille de chronographe sont superposées.The Figures 1 to 4 illustrate the catch-up mechanism at rest, that is to say when the split-second needle and the chronograph hand are superimposed.

Dans cette position de repos, les becs 19 sont chacun en appui contre une colonne de la roue à colonnes de rattrapante 20. Les pinces de blocage 18 et les pinces d'isolation 21 sont dans leur position ouverte. Le levier de rattrapante est en appui sur le coeur de rattrapante 1 par le biais de son premier levier 4, le galet d'indexage 16 de l'extrémité active 12 du levier de rattrapante se trouvant dans le creux entre les épaulements 1 b du coeur de rattrapante 1 tandis que les portions planes 15 de ladite extrémité active 12 sont en appui sur lesdits épaulements 1 b, garantissant ainsi l'indexation de l'aiguille de rattrapante avec l'aiguille de chronographe.In this rest position, the spouts 19 are each resting against a column of the split-second column wheel 20. The locking clamps 18 and the isolation clamps 21 are in their open position. The split lever is resting on the catcher core 1 by means of its first lever 4, the indexing roller 16 of the active end 12 of the split lever being in the recess between the shoulders 1b of the heart 1 while the planar portions 15 of said active end 12 bear on said shoulders 1b, thus ensuring the indexing of the split-second needle with the chronograph hand.

Dans cette position de repos, l'aiguille de rattrapante est donc superposée à l'aiguille de chronographe et suit les mouvements de celle-ci (mise en marche, arrêt, remise à zéro).In this rest position, the split-second needle is superimposed on the chronograph hand and follows its movements (start, stop, reset).

Sur commande de l'utilisateur qui veut mesurer un temps intermédiaire, la roue à colonnes de rattrapante 20 pivote d'un pas. Les becs 19 tombent alors chacun dans un espace entre deux colonnes de ladite roue à colonnes de rattrapante 20 (figure 5). La chute des becs 19 entraîne le pivotement des pinces de blocage 18 et des pinces d'isolation 21 depuis leur position ouverte dans leur position fermée.On command of the user who wants to measure an intermediate time, the split-column wheel 20 pivots by one step. The slats 19 then each fall into a space between two columns of said split-second column wheel 20 ( figure 5 ). The fall of the nozzles 19 causes the pivoting of the locking clamps 18 and the isolation clamps 21 from their open position in their closed position.

Le mécanisme de rattrapante illustré est de préférence agencé pour que le blocage de la roue de rattrapante 3 et l'isolation du levier de rattrapante se fasse en deux phases successives, les pinces de blocage 18 atteignant leur position fermée avant que les pinces d'isolation 21 n'atteignent la leur. Ainsi, dans une première phase de blocage illustrée à la figure 5, les pinces de blocage 18 ont déjà atteint leur position fermée, immédiatement après le début de la chute des becs 19 entre les colonnes de la roue à colonnes de rattrapante 20 et immobilisent donc la roue de rattrapante 3 alors que les pinces d'isolation 21 n'ont pas encore fait pivoter le levier de rattrapante ou son premier levier 4. Dès cette première phase de blocage, l'aiguille de rattrapante est stoppée.The catch-up mechanism illustrated is preferably arranged so that the locking of the split wheel 3 and the insulation of the split-lever takes place in two successive phases, the locking clamps 18 reaching their closed position before the isolation clamps. 21 do not reach theirs. Thus, in a first phase of blocking illustrated in the figure 5 , the locking clamps 18 have already reached their closed position, immediately after the beginning of the fall of the slats 19 between the columns of the split-column wheel 20 and thus immobilize the split-second wheel 3 while the insulation clamps 21 have not yet pivoted the split lever or its first lever 4. In this first blocking phase, the split-second needle is stopped.

Dans une seconde phase marquant le début de l'isolation et illustrée à la figure 6, les becs 19 poursuivent leur chute entre les colonnes de la roue à colonnes de rattrapante 20 et les pinces d'isolation 21 poursuivent leur rotation pour atteindre leur position fermée dans laquelle elles sont en appui contre le premier galet d'isolation 13 du premier levier 4 et font pivoter ledit levier. Le premier levier 4 et l'extrémité active 12 du levier de rattrapante commencent donc à s'éloigner du coeur de rattrapante 1. La roue de rattrapante 3 est toujours bloquée par les pinces de blocage 18. Dans la forme d'exécution illustrée, la flexibilité desdites pinces de blocage 18 compense leur rotation supplémentaire (puisqu'elles sont portées par les pinces d'isolation 21) et leur permet de rester en appui contre la roue de rattrapante 3 sans risque de casse même si la force radiale des pinces de blocage 18 sur la roue de rattrapante 3 augmente.In a second phase marking the beginning of the isolation and illustrated in the figure 6 , the nozzles 19 continue their fall between the columns of the split-column wheel 20 and the isolation clamps 21 continue their rotation to reach their closed position in which they bear against the first insulating roller 13 of the first lever 4 and rotate said lever. The first lever 4 and the active end 12 of the split lever therefore start to move away from the split-second core 1. The split-second wheel 3 is always blocked by the clamping clamps 18. In the embodiment shown, the flexibility of said clamping clamps 18 compensates for their additional rotation (since they are carried by the isolation clamps 21) and allows them to remain in abutment against the split wheel 3 without risk of breakage even if the radial force of the clamping clamps 18 on the split wheel 3 increases.

Enfin, le mécanisme de rattrapante atteint sa position de blocage et d'isolation complète lors d'une troisième phase illustrée à la figure 7a. Suite à la chute des becs 19 entre les colonnes de la roue à colonnes de rattrapante 20, les pinces d'isolation 21 pivotent jusqu'à ce qu'elles arrivent en butée contre deux excentriques 24. Cette position en butée contre les excentriques 24 correspond alors à la position fermée des pinces d'isolation 21 et des pinces de blocage 18. La position des excentriques 24 peut être réglée pour que dans cette position fermée des pinces d'isolation 21, le levier de rattrapante et en particulier le premier levier 4 se trouve dans une position dans laquelle il est complètement isolé du coeur de rattrapante 1 qui peut pivoter librement sans contact avec l'extrémité active 12 du levier de rattrapante et son galet d'indexage 16 en particulier. Comme il est visible dans la figure 7b, dans cette position d'isolation complète du levier de rattrapante, même la pointe 1a du coeur de rattrapante 1 n'entre pas en contact avec l'extrémité active 12 du levier de rattrapante. Bien entendu, dans cette position d'isolation compète, la roue de rattrapante 3 est toujours bloquée par les pinces de blocage 18.Finally, the catch-up mechanism reaches its blocking position and complete isolation during a third phase illustrated in FIG. figure 7a . Following the fall of the nozzles 19 between the columns of the split-column wheel 20, the isolation clamps 21 pivot until they come into abutment against two eccentric 24. This position in abutment against the eccentric 24 corresponds then in the closed position of the isolation clamps 21 and clamping clamps 18. The position of the eccentric 24 can be adjusted so that in this closed position of the isolation clamps 21, the split lever and in particular the first lever 4 is in a position in which it is completely isolated from the split core 1 which can pivot freely without contact with the active end 12 of the split lever and its indexing roller 16 in particular. As it is visible in the figure 7b in this position of complete isolation of the catch-up lever, even the tip 1a of the catcher core 1 does not come into contact with the active end 12 of the split-second lever. Of course, in this complete isolation position, the split wheel 3 is always blocked by the locking clamps 18.

A nouveau sur commande de l'utilisateur, le mécanisme de rattrapante peut être remis à zéro par rapport à l'aiguille de chronographe, c'est-à-dire que l'aiguille de rattrapante peut être ramenée dans sa position indexée dans laquelle elle est superposée à l'aiguille de chronographe.Again on command of the user, the split-second mechanism can be reset to zero with respect to the chronograph hand, that is to say that the split-second needle can be returned to its indexed position in which it is superimposed on the chronograph hand.

L'actionnement du mécanisme de commande par l'utilisateur entraîne la rotation d'un pas de la roue à colonnes de rattrapante 20. Les becs 19 sortent de leur logement entre deux colonnes pour revenir chacun en appui sur une colonne de la roue à colonnes de rattrapante 20. Les pinces de blocage 18 et les pinces d'isolation 21 pivotent alors et retrouvent leur position ouverte. Comme lors de la mesure d'un temps intermédiaire décrit ci-dessus, le réindexage de l'aiguille de rattrapante sur l'aiguille de chronographe se fait en deux étapes. D'abord, les pinces d'isolation 21 libèrent le levier de rattrapante et le premier levier 4 dont l'extrémité active 12 revient au contact du coeur de rattrapante 1 sous l'action de son ressort de rappel 9. Ensuite, les pinces de blocage 18 libèrent la roue de rattrapante 3. L'extrémité active 12 du levier de rattrapante qui est en contact avec le coeur de rattrapante 1, roule (ou glisse) sur celui-ci jusqu'à ce que le galet d'indexage 16 tombe dans le creux entre les épaulements 1b dudit coeur de rattrapante 1 et que la portion plane 15 coopère avec lesdits épaulements 1 b. Le mécanisme de rattrapante a retrouvé sa position de repos et l'aiguille de rattrapante et l'aiguille de chronographe sont à nouveau superposées.The actuation of the control mechanism by the user causes the rotation of a pitch of the split-second column wheel 20. The spouts 19 come out of their housing between two columns to return each resting on a column of the column wheel 20. The locking clamps 18 and the isolation clamps 21 then pivot and return to their open position. As during the measurement of an intermediate time described above, the reindexing of the split-second needle on the chronograph hand is done in two steps. First, the isolation clamps 21 release the split lever and the first lever 4, the active end 12 of which returns to contact with the split-second core 1 under the action of its return spring 9. Then, the clamps of FIG. blocking 18 release the split wheel 3. The active end 12 of the split lever that is in contact with the split core 1, rolls (or slides) on it until the indexing roller 16 falls in the hollow between the shoulders 1b of said catcher core 1 and that the flat portion 15 cooperates with said shoulders 1b. The catch-up mechanism has returned to its rest position and the split-second needle and the chronograph hand are again superimposed.

Dans la forme d'exécution illustrée, les pinces d'isolation 21 et leur extrémité active circulaire 22 ne forment pas un cercle complet autour de la roue de rattrapante 3 lorsque lesdites pinces d'isolation 21 sont dans leur position fermée. Il existe deux zones critiques, appelées zones mortes C, D entre les extrémités actives 22 des pinces d'isolation 21. Si, au moment de l'arrêt de la rattrapante (mesure d'un temps intermédiaire), la roue de rattrapante 3 se trouve dans une position telle que le premier galet d'isolation 13 du premier levier 4 se situe dans une des zones mortes C, D, alors les pinces d'isolation 21 n'entreront pas en contact avec ledit premier galet d'isolation 13 et le premier levier 4 ne pivotera pas dans sa position d'isolation éloignée du coeur de rattrapante 1 même dans la position fermée des pinces d'isolation 21.In the illustrated embodiment, the isolation clamps 21 and their circular active end 22 do not form a complete circle around the split-second wheel 3 when said isolation clamps 21 are in their closed position. There are two critical zones, called dead zones C, D between the active ends 22 of the isolation clamps 21. If, at the moment of stopping of the split-second (measurement of an intermediate time), the split-second wheel 3 becomes is in a position such that the first insulating roller 13 of the first lever 4 is in one of the dead zones C, D, then the isolation clamps 21 will not come into contact with said first insulating roller 13 and the first lever 4 does not it will not pivot in its isolation position remote from the split core 1 even in the closed position of the isolation clamps 21.

Pour garantir une isolation complète, même dans ce cas critique, le levier de rattrapante selon l'invention comprend, en plus du premier levier 4, un levier d'isolation 25 pivoté sur la roue de rattrapante 3. Par exemple et comme illustré aux figures, le levier d'isolation 25 peut être monté pivotant autour d'un deuxième tenon 26 lui-même chassé dans la roue de rattrapante 3.To ensure complete insulation, even in this critical case, the split lever according to the invention comprises, in addition to the first lever 4, an isolation lever 25 pivoted on the split wheel 3. For example and as illustrated in FIGS. , the isolation lever 25 can be pivotally mounted around a second pin 26 itself driven into the split wheel 3.

Le levier d'isolation 25 porte à une première extrémité une goupille d'isolation 27 agencée pour se déplacer dans une lumière 14 pratiquée dans le second bras 11 du premier levier 4. L'autre extrémité du levier d'isolation 25 présente une protubérance qui dans la forme d'exécution illustrée est constituée par un second galet d'isolation 28 pivoté sur ledit levier d'isolation 25. Comme le premier galet d'isolation 13, le second galet d'isolation 28 est agencé pour coopérer avec les pinces d'isolation 21 dans leur position fermée. En outre, le levier d'isolation 25, sa goupille d'isolation 27 et la lumière 14 prévue sur le premier levier 4 sont agencés de sorte qu'un appui des pinces d'isolation 21 sur le second galet d'isolation 28 entraîne le pivotement du levier d'isolation 25 autour du second tenon 26 et le pivotement du premier levier 4 dans une position dans laquelle ce dernier n'est plus en contact avec le coeur de rattrapante 1.The isolation lever 25 carries at one end an isolation pin 27 arranged to move in a slot 14 formed in the second arm 11 of the first lever 4. The other end of the isolation lever 25 has a protrusion which in the illustrated embodiment is constituted by a second insulating roller 28 pivoted on said isolation lever 25. Like the first insulating roller 13, the second insulating roller 28 is arranged to cooperate with the grippers. insulation 21 in their closed position. In addition, the isolation lever 25, its isolation pin 27 and the light 14 provided on the first lever 4 are arranged so that a support of the isolation clamps 21 on the second insulation roller 28 causes the pivoting of the isolation lever 25 around the second pin 26 and the pivoting of the first lever 4 in a position in which the latter is no longer in contact with the catcher core 1.

Le levier d'isolation 25 et le premier levier 4, et en particulier les premier et second galets d'isolation 13, 28 sont agencés de sorte qu'il y ait toujours au moins un des premier et second galets d'isolation 13, 28 en contact avec les pinces d'isolation 21 lorsque celles-ci sont dans leur position fermée. Ainsi, l'extrémité active 12 du levier de rattrapante selon l'invention formé du premier levier 4 et du levier d'isolation 25 peut être isolée du coeur de rattrapante 1 lors de la mesure d'un temps intermédiaire quelle que soit la position de la roue de rattrapante 3 lorsque celle-ci est bloquée par les pinces de blocage 18.The isolation lever 25 and the first lever 4, and in particular the first and second insulating rollers 13, 28 are arranged so that there is always at least one of the first and second insulating rolls 13, 28 in contact with the isolation clamps 21 when they are in their closed position. Thus, the active end 12 of the catch-up lever according to the invention formed by the first lever 4 and the isolation lever 25 can be isolated from the jumper core 1 when measuring an intermediate time whatever the position of the split wheel 3 when it is blocked by the locking clamps 18.

La figure 8 illustre le cas où au déclenchement du mécanisme de rattrapante (mesure d'un temps intermédiaire), la roue de rattrapante 3 et le premier levier 4 sont dans une position dans laquelle le premier galet d'isolation 13 se trouve dans la zone morte C et n'est donc pas atteignable par les pinces d'isolation 21 en position fermée. Dans ce cas, les pinces d'isolation 21 en pivotant dans leur position fermée viennent en contact avec le second galet d'isolation 28 ce qui fait pivoter le levier d'isolation 25. Le pivotement dudit levier d'isolation 25 entraîne le déplacement de la goupille d'isolation 27 dans la lumière 14 du premier levier 4 et par conséquent le pivotement dudit premier levier 4 dans une position dans laquelle il n'est plus en contact avec le coeur de rattrapante 1.The figure 8 illustrates the case where the trigger of the split-second mechanism (measurement of an intermediate time), the split-seconds wheel 3 and the first lever 4 are in a position in which the first insulation roller 13 is in the dead zone C and is therefore not attainable by the isolation clamps 21 in the closed position. In this case, the isolation clamps 21 pivoting in their closed position come into contact with the second insulation roller 28 which pivots the isolation lever 25. The pivoting of said isolation lever 25 causes the displacement of the insulation pin 27 in the slot 14 of the first lever 4 and consequently the pivoting of said first lever 4 in a position in which it is no longer in contact with the catcher core 1.

Comme illustré aux figures 9 à 12, de préférence, le premier levier 4, le levier d'isolation 25 et les premier et second galets d'isolation 13, 28 sont agencés pour que l'isolation ait lieu même lorsque l'un desdits premier et second galets d'isolation 13, 28 vient en appui à la limite d'une extrémité active 22 des pinces d'isolation 21 et donc à la limite d'une zone morte C ou D (premier galet d'isolation 13 en limite des pinces d'isolation 21 dans les figures 10 et 11, et second galet d'isolation 28 en limite des pinces d'isolation 21 dans les figures 9 et 12).As illustrated in Figures 9 to 12 preferably, the first lever 4, the isolation lever 25 and the first and second isolation rolls 13, 28 are arranged so that the insulation takes place even when one of said first and second isolation rollers 13 , 28 comes to bear against the limit of an active end 22 of the isolation clamps 21 and therefore to the limit of a dead zone C or D (first insulation roller 13 at the limit of the insulation clamps 21 in the figures 10 and 11 , and second isolation roller 28 limits insulation clamps 21 in the figures 9 and 12 ).

Un mécanisme d'isolation tel que décrit ci-dessus permet de limiter voire supprimer les contraintes radiales sur l'axe de rattrapante en offrant une isolation concentrique par rapport à la roue de rattrapante. Il n'est ainsi plus nécessaire de faire pivoter l'axe de rattrapante dans un pont dédié ou entre deux ponts dédiés. De plus, le mécanisme de rattrapante permet une isolation complète du levier qui n'est plus du tout en contact avec le coeur de rattrapante lors de la mesure d'un temps intermédiaire ce qui permet de limiter la variation d'amplitude du mouvement (plus besoin de passer la pointe du coeur pour le levier de rattrapante). En outre, le mécanisme d'isolation permet de conserver les dimensions d'un mécanisme de rattrapante classique sans isolateur puisqu'en ne recourant pas à une roue d'isolation, aucune épaisseur supplémentaire n'est ajoutée au mécanisme (les pinces d'isolation travaillant dans l'épaisseur du levier de rattrapante).An isolation mechanism as described above makes it possible to limit or even eliminate the radial stresses on the split-seconds axis by offering concentric insulation with respect to the split-second wheel. It is thus no longer necessary to rotate the split-seconds axis in a dedicated bridge or between two dedicated bridges. In addition, the split-second mechanism allows complete isolation of the lever which is no longer in contact with the split-second core when measuring an intermediate time, which makes it possible to limit the variation in the amplitude of the movement (more need to pass the tip of the heart for the split-seconds lever). In addition, the isolation mechanism makes it possible to maintain the dimensions of a conventional non-isolator override mechanism since, by not using an isolation wheel, no additional thickness is added to the mechanism (the isolation clamps working in the thickness of the splitter lever).

Dans la forme d'exécution décrite ci-dessus, les pinces d'isolation sont pivotées coaxialement aux pinces de blocage et sont commandées simultanément, les pinces de blocage étant portées par les pinces d'isolation. Il va de soi qu'en variante, les pinces d'isolation pourraient être pivotées en un autre point du mouvement, indépendamment des pinces de blocage. De même, lesdites pinces d'isolation pourraient être commandées par les pinces de blocage ou encore directement commandées par la roue à colonnes de rattrapante.In the embodiment described above, the isolation clamps are coaxially pivoted to the clamping clamps and are controlled simultaneously, the clamps being carried by the isolation clamps. It goes without saying that, alternatively, the isolation clamps could be pivoted to another point of the movement, independently of the locking clamps. Similarly, said insulation clamps could be controlled by the clamping clamps or directly controlled by the split-column wheel.

D'autre part, les pinces de blocage sont bien connues de l'homme du métier et pourraient avoir toute forme appropriée à leur fonction et pourraient être totalement indépendantes des pinces d'isolation.On the other hand, the locking clamps are well known to those skilled in the art and could have any form appropriate to their function and could be completely independent of the isolation clamps.

De même, la forme de l'extrémité active du levier de rattrapante décrite ci-dessus est un exemple. Il est évident que ladite extrémité active pourrait avoir toute forme appropriée.Likewise, the shape of the active end of the override lever described above is an example. It is obvious that said active end could have any suitable shape.

De la même manière, l'articulation entre le premier levier 4 et le levier d'isolation 25 formant le levier de rattrapante selon l'invention peut prendre toute forme appropriée pour que le pivotement du second entraîne le pivotement du premier. Les moyens permettant au levier de rattrapante de coopérer avec le mécanisme d'isolation du mécanisme de rattrapante décrit ci-dessus peuvent également prendre toute forme appropriée, le galet n'étant qu'un exemple parmi d'autres.In the same way, the articulation between the first lever 4 and the isolation lever 25 forming the split lever according to the invention can take any form appropriate for the pivoting of the second causes the pivoting of the first. The means allowing the split-lever to cooperate with the isolation mechanism of the override mechanism described above may also take any suitable form, the roller being only one example among others.

Le levier de rattrapante selon l'invention est donc caractérisé par le fait qu'il comprend un premier levier (4) et au moins un second levier (25) pivotés chacun sur la roue de rattrapante et articulés l'un à l'autre de sorte que le pivotement du second levier entraîne le pivotement du premier levier. Le premier levier porte l'extrémité active du levier de rattrapante destinée à coopérer avec un coeur de rattrapante pour l'indexage de l'aiguille de rattrapante. Le levier de rattrapante est destiné à coopérer avec un mécanisme d'isolation de levier de rattrapante de type concentrique. Pour ce faire, chacun des premier et second leviers comprend au moins un organe destiné à coopérer avec un élément du mécanisme d'isolation concentrique comme les pinces d'isolation décrite ci-dessus. Les premier et second leviers sont également agencés sur la roue de rattrapante et l'un par rapport à l'autre de sorte que, lors de l'isolation, le levier de rattrapante est pivoté dans sa position isolée (l'extrémité active n'est plus en contact avec le coeur de rattrapante) quelle que soit la position de la roue de rattrapante au moment de l'isolation.The catch-up lever according to the invention is therefore characterized in that it comprises a first lever (4) and at least one second lever (25) each pivoted on the split-seconds wheel and articulated to each other. so that the pivoting of the second lever causes the pivoting of the first lever. The first lever carries the active end of the split lever intended to cooperate with a split-second core for indexing the split-second needle. The splitter lever is intended to cooperate with a concentric type split-lever lever isolation mechanism. To do this, each of the first and second levers comprises at least one member intended to cooperate with an element of the isolation mechanism concentric like the insulation clamps described above. The first and second levers are also arranged on the split wheel and with respect to one another so that, during insulation, the split-lever is pivoted into its isolated position (the active end n ' is more in contact with the catch-up core) regardless of the position of the split-second wheel at the time of the insulation.

Ainsi, il est possible de réduire l'encombrement du mécanisme d'isolation de rattrapante tout en assurant une isolation complète du levier de rattrapante quelle que soit la position de la roue de rattrapante lors de l'isolation. Par exemple, dans la forme d'exécution illustrée, il n'est pas nécessaire que les pinces d'isolation forment un cercle complet fermé concentrique à la roue de rattrapante dans leur position fermée d'isolation, le levier de rattrapante selon l'invention et ses deux leviers assurant une isolation parfaite même dans les zones mortes des pinces d'isolation. L'encombrement du mécanisme d'isolation est ainsi diminué.Thus, it is possible to reduce the size of the split-second isolation mechanism while ensuring complete isolation of the split-lever regardless of the position of the split-second wheel during insulation. For example, in the illustrated embodiment, it is not necessary for the isolation clamps to form a closed complete circle concentric with the split-second wheel in their closed isolation position, the split-second lever according to the invention. and its two levers ensure perfect insulation even in the dead zones of the insulation clamps. The size of the isolation mechanism is thus reduced.

Claims (6)

Levier de rattrapante destiné à équiper un mécanisme de rattrapante comprenant en outre une roue de rattrapante (3) et un coeur de rattrapante (1) caractérisé par le fait que ledit levier de rattrapante comprend un premier levier (4) et un second levier (25) destinés chacun à être pivotés sur la roue de rattrapante (3) et articulés l'un à l'autre de sorte que le pivotement du second levier (25) entraîne le pivotement du premier levier (4), ledit premier levier (4) portant l'extrémité active (12) du levier de rattrapante destinée à coopérer avec le coeur de rattrapante (1) du mécanisme de rattrapante.A split-lever for equipping a split-over mechanism further comprising a split-second wheel (3) and a split-second core (1) characterized in that said split-up lever comprises a first lever (4) and a second lever (25). ) each intended to be pivoted on the catching wheel (3) and articulated to one another so that the pivoting of the second lever (25) causes the first lever (4) to pivot, said first lever (4) carrying the active end (12) of the catch-up lever intended to cooperate with the catch-up core (1) of the catch-up mechanism. Levier de rattrapante selon la revendication 1, caractérisé par le fait que le second levier (25) comprend une goupille (29) agencée pour se déplacer dans une lumière (14) pratiquée dans le premier levier (4).A split lever according to claim 1, characterized in that the second lever (25) comprises a pin (29) arranged to move in a slot (14) formed in the first lever (4). Levier de rattrapante selon l'une des revendications précédentes, caractérisé par le fait que les premier et second leviers (4, 25) comprennent chacun un organe d'isolation (13, 28) destiné à coopérer avec un mécanisme d'isolation du mécanisme de rattrapante pour faire pivoter les premier et second leviers (4, 25) dans une position dans laquelle l'extrémité active (12) du levier de rattrapante n'est plus en contact avec le coeur de rattrapante (1) dudit mécanisme de rattrapante.A split lever according to one of the preceding claims, characterized in that the first and second levers (4, 25) each comprise an isolating member (13, 28) for cooperating with an isolation mechanism of the catching to pivot the first and second levers (4, 25) in a position in which the active end (12) of the catch-up lever is no longer in contact with the catch-up core (1) of said catch-up mechanism. Levier de rattrapante selon la revendication précédente 3, caractérisé par le fait que les organes d'isolation sont des premier et second galets d'isolation montés pivotant respectivement sur les premier et second leviers (4, 25).Retractable lever according to the preceding claim 3, characterized in that the insulating members are first and second insulating rollers pivoted respectively on the first and second levers (4, 25). Mécanisme de rattrapante comprenant un levier de rattrapante selon l'une des revendications 1 à 4.A split-second mechanism comprising a split-second lever according to one of claims 1 to 4. Mécanisme de chronographe comprenant un mécanisme de rattrapante selon la revendication 5.Chronograph mechanism comprising a split mechanism according to claim 5.
EP15198587.6A 2015-12-09 2015-12-09 Split time counter lever Active EP3179318B1 (en)

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Publication number Priority date Publication date Assignee Title
US474100A (en) * 1892-05-03 beymond
CH705614A2 (en) * 2011-10-06 2013-04-15 Patek Philippe Sa Geneve Fly-back lever and fly-back heart assembly for use in fly-back mechanism in stop watch, has fly-back heart whose peripheral surface is located opposite to point that comprises recess in which pin is fixed without touching fly-back heart
EP2897002A2 (en) * 2014-01-16 2015-07-22 Richemont International S.A. Insulating adjustment mechanism and mechanical timepiece comprising a chronograph mechanism provided with said insulating adjustment mechanism

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