EP2884350B1 - Zero-reset device with independent hammers - Google Patents

Zero-reset device with independent hammers Download PDF

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Publication number
EP2884350B1
EP2884350B1 EP14195738.1A EP14195738A EP2884350B1 EP 2884350 B1 EP2884350 B1 EP 2884350B1 EP 14195738 A EP14195738 A EP 14195738A EP 2884350 B1 EP2884350 B1 EP 2884350B1
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EP
European Patent Office
Prior art keywords
reset
zero
hammers
control means
locking
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.)
Active
Application number
EP14195738.1A
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German (de)
French (fr)
Other versions
EP2884350A2 (en
EP2884350A3 (en
Inventor
Thibaut Philippine
Jacques Gabathuler
Johan Montet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Manufacture dHorlogerie Audemars Piguet SA
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Manufacture dHorlogerie Audemars Piguet SA
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Publication of EP2884350A2 publication Critical patent/EP2884350A2/en
Publication of EP2884350A3 publication Critical patent/EP2884350A3/en
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Publication of EP2884350B1 publication Critical patent/EP2884350B1/en
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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0804—Watches or clocks with stop devices, e.g. chronograph with reset mechanisms
    • G04F7/0809—Watches or clocks with stop devices, e.g. chronograph with reset mechanisms with single hammers, i.e. one hammer acts on each counter
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0804—Watches or clocks with stop devices, e.g. chronograph with reset mechanisms
    • G04F7/0819—Watches or clocks with stop devices, e.g. chronograph with reset mechanisms with triple hammer, i.e. one hammer acts on three counters
    • 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
    • G04F7/06—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator running only during the time interval to be measured, e.g. stop-watch
    • G04F7/062—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator running only during the time interval to be measured, e.g. stop-watch with reset mechanisms
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0804—Watches or clocks with stop devices, e.g. chronograph with reset mechanisms
    • G04F7/0814—Watches or clocks with stop devices, e.g. chronograph with reset mechanisms with double hammer, i.e. one hammer acts on two counters

Definitions

  • the subject of the present invention is a timepiece reset device, particularly for a chronograph watch, the device comprising a first control means, a second control means kinematically connected to said first control means, at least two cams of reset, as well as at least two corresponding reset hammers being pivoted independently of each other and able to be actuated so as to cooperate with a corresponding reset cam.
  • This invention relates more specifically to timepieces, including wristwatches, having a mechanical movement and being equipped with a chronograph mechanism, or even catch-up.
  • the second, minute, and hour hands optionally arranged as jumper needles, are each mounted on an axis equipped with a heart-shaped cam which can cooperate with a corresponding hammer, in order to return the needles in their rest positions, in the case of a reset, or in a position defined by the reference hands, in the case of a split mechanism.
  • the hammers are often arranged on a single piece. This can cause problems because of the high force exerted by such a part, the necessary synchronization at the moment of striking on the individual cores, the resulting manufacturing accuracy, the size of such a part, and other disadvantages.
  • the patent application EP 2 241 945 proposes a chronograph mechanism with hammers of seconds and minutes independently rotated on one another and linked by a connecting member. If the proposed arrangement has springs acting independently on the hammers, it also requires, furthermore because of said connecting member, a coaxial pivoting of the hammers and a minute counter jumper pivoted angularly concentrically to the counter wheel. minutes, which greatly limits the use of this device.
  • Another constellation has been proposed in the document EP 1 890 205 .
  • the corresponding device comprises several hammers that can be actuated by a control member to cooperate with a corresponding core.
  • the hammers are pivotable about respective independent pivots as well as articulated to said control member, so that a translational movement of the latter causes by its kinematic connection with the hammers directly a cooperation between the hammers and corresponding cores.
  • Such a direct kinematic connection is however not optimal.
  • the object of the present invention is therefore to remedy, at least partially, the disadvantages of the known devices and to realize a reset device equipped with independent hammers which is endowed with a high security in its operation, a high accuracy at the level of the simultaneous actuation of the hammers, as well as a well-defined force applying to the cams in the shape of a heart. It is also an object of the present invention to provide this device with a robust construction and as little space as possible as well as simple and reliable in use. The device should be suitable for use both in a chronograph mechanism itself as well as in any other similar application, such as a split-second mechanism.
  • a device for this purpose, proposes a resetting device of the aforementioned type which is distinguished by the features set forth in claim 1.
  • a device comprises at least two hammer springs each of which is capable of exerting a prestressing force tending to rotate a reset hammer towards the corresponding reset cam, and a winding and triggering means and a locking means, said winding means and triggering means being adapted to arm said hammer springs during a first phase of an actuation of the first control means and to cooperate, during a second phase of the actuation of the first control means, with said means of locking so that this locking means passes from a first rest position, wherein the locking means holds the reset hammers da ns their rest positions, at a second trigger position, wherein the locking means releases the reset hammers that come, each under the action of the corresponding hammer spring, in their positions of cooperation with the delivery cam corresponding zero.
  • the reset is carried out only if the manual force applied by the user of the timepiece on the first control means exceeds a predefined threshold value.
  • the applied force by the hammers on the cams is always the same and also a predefined value. This is complete while ensuring maximum independence for hammers that do not have a direct kinematic link between them, at least not when applied to the cams.
  • the device comprises a return means of reset hammers adapted to return said hammers in their rest position following their actuation, the restoring means being arranged to maintain optimally independence between the hammers.
  • the resetting hammers of a device according to the present invention may advantageously all have the same geometry. All these factors contribute to a particularly simple and reliable realization of such a device.
  • the present invention relates to a reset device intended to be integrated in a timepiece, preferably in a wristwatch having a mechanical movement.
  • a timepiece normally comprises a chronograph mechanism or a split-second mechanism which is intended to be equipped with a reset device according to the present invention. Since chronograph and counterclockwise mechanisms, or even other similar mechanisms which are adapted to be combined with the device according to the invention, are known to those skilled in the art, the following description will be limited to the structure and operation of said device.
  • Figures 1a to 1c illustrate schematically and by way of example a first embodiment of such a device by a schematic perspective view, by a view from above, respectively by a longitudinal section of this device along the line II indicated in FIG. figure 1b .
  • the device comprises, as the devices of the prior art, a first control means 1, a second control means 2 kinematically connected to said first control means 1, at least two reset cams 3.1, 3.2 , 3.3, and at least two corresponding reset hammers 4.1, 4.2, 4.3.
  • the hammers 4.1, 4.2, 4.3 are pivoted independently of one another about the pivot axes 4.1.1, 4.2.1, 4.3.1, positioned normally non-concentrically with respect to each other, and are capable of being actuated so as to cooperate with a corresponding reset cam 3.1, 3.2, 3.3.
  • they each have an arm 4.1.3, 4.2.3, 4.3.3 whose free end comprises a surface, preferably flat, forming the actual hammer and capable of being in abutment against the delivery cam to zero corresponding 3.1, 3.2, 3.3.
  • cams 3.1, 3.2, 3.3 are normally heart-shaped, preferably asymmetrically-shaped heart to obtain a better performance of the hammer-core assembly, and are mounted on the axis of rotation of the body of the body. corresponding indication which is often a needle or a disc, or on the axis of a wheel in direct or indirect kinematic connection with the axis of rotation of this member. It may be, for example, the seconds, minutes, and hours hands of a corresponding chronograph mechanism or catch-ante mechanism, so that the three hammers 4.1, 4.2, 4.3, respectively the three hearts 3.1, 3.2, 3.3 illustrated in the figures correspond to hammers, respectively to the hearts of hours, minutes, and seconds.
  • the first control means 1 is movable in translation and the second control means 2 is rotatable about a pivot 2.1, a non-illustrated control return spring the figures tending to apply the end 2.2 of the second control means 2 against one of the hammers, preferably against the first hammer4.1, as illustrated in FIGS. Figures 1a and 1b .
  • the first control means 1 is made by a push button on which the user of the timepiece can apply a manual force to cause, by said kinematic link between the first - 1 and second control means 2, a pivoting of this second control means 2.
  • An armature stop 6.8, visible for example to figures 1b and 3b limits the travel of the second control means 2 in the direction away from the hammers 4.1, 4.2, 4.3, following the application of a manual force on the first control means 1 by the user.
  • the first control means 1 thus makes it possible, by means of the second control means 2, to control a corresponding function, for example the resetting of the hands of a chronograph mechanism or a split-second mechanism.
  • the device comprises at least two hammer springs 5.1, 5.2, 5.3 each of which is capable of exerting a prestressing force tending to pivot one of the reset hammers 4.1, 4.2, 4.3 in the direction of the corresponding reset cam 3.1, 3.2, 3.3, and a means of arming and triggering 6 and a locking means 7.
  • the hammer springs are made by flat springs one end of which is mounted rigidly on the corresponding hammer and the other end of which is free to receive a reinforcing force through the winding means and trigger 6, as will become clear later in the description.
  • the springs could be mounted on said arming and triggering means 6 and their free ends cooperate with the hammers 4.1, 4.2, 4.3, this constellation not being illustrated in the figures.
  • said arming and triggering means 6 is able to arm said hammer springs 5.1, 5.2, 5.3 during a first phase of an actuation of the first control means 1 as well as to cooperate, during a second phase of the actuation of the first control means 1, with said locking means 7 so that the locking means 7 passes from a first rest position, wherein the locking means 7 holds the reset hammers at zero, 4.1, 4.2, 4.3 in their rest positions, at a second trip position.
  • the locking means 7 releases the reset hammers 4.1, 4.2, 4.3 which then come, each under the action of the hammer spring 5.1, 5.2, 5.3 corresponding, in their positions of cooperation with the cam corresponding reset, 3.1, 3.2, 3.3, as will be described in more detail in the following description.
  • the arming and triggering means 6 is formed by a bar kinematically connected to the second control means 2 and comprising at least two, in the example illustrated in the figures three armoring elements 6.1, 6.2, 6.3 each of which is capable of bearing against the free end of the hammer spring 5.1, 5.2, 5.3 corresponding, so as to be capable of arming, when said first phase of the actuation of the first control means 1, said hammer spring 5.1, 5.2, 5.3.
  • the arming elements can be preferably made by arming pins 6.1, 6.2, 6.3 mounted at a suitable distance along the bar 6.
  • the arming and triggering means 6 also comprises a triggering part 6.4 adapted to cooperate with the locking means 7, so that that the latter passes, during said second phase of the actuation of the first control means 1, its first rest position, wherein the locking means 7 maintains the reset hammers 4.1, 4.2, 4.3 in their positions resting, in its second trigger position, wherein the locking means 7 releases the reset hammers 4.1, 4.2, 4.3.
  • This triggering part is preferably formed by an inclined plane or a rounded edge 6.4 located near its end oriented towards said locking means 7 and capable of coming into contact with this locking means 7.
  • the kinematic connection of the arming and tripping means 6 to the second control means 2 may for example be carried out by a pivot pin 6.7 articulated at the other end 2.2 of the second control means 2.
  • the rotational movement preferably has a large radius.
  • said locking means 7 is preferably made by a locking lever pivotally mounted about a pivot 7.1 and prestressed by a locking spring, in the direction of one of the reset hammers. zero 4.1, 4.2, 4.3, against a locking stop 7.3 which defines its rest position.
  • it is prestressed towards the first reset hammers 4.1 which is located closest to the second control means 2, but it is possible that it is prestressed towards a other hammers 4.2, 4.3.
  • That of the hammers against which the locking lever 7 is prestressed, so normally and as illustrated in the figures the first reset hammers 4.1 comprises a notch 4.1.4 in which a locking portion 7.2 of the locking lever 7 can to be engaged, respectively to be disengaged.
  • At least this hammer preferably comprises a guide portion 4.1.5, which may be slightly rounded, for guiding the locking portion 7.2, following a disengagement, during its movement, and then in its movement back to notch 4.1.4.
  • the locking portion may be made by a locking pin 7.2 mounted on the lever 7 or by a portion coming from a workpiece and of a shape adapted to be engaged in said notch 4.1.4 of a hammer of delivery to zero 4.1, 4.2, 4.3.
  • the reset device comprises a return means 8 reset hammers 4.1, 4.2, 4.3 adapted to return the reset hammers 4.1, 4.2, 4.3 in their rest position, continued to their actuation.
  • said return means 8 is formed by a return bar kinematically connected to each of the reset hammers 4.1, 4.2, 4.3.
  • This clearance is preferably of the order of 0.10 mm to 0.35 mm, said openings being moreover arranged so that their edges do not touch the second-8.2 and third pivots 8.3 when the hammers are resting on the respective heart.
  • a return stop 8.4 defines the rest position of the return bar 8, respectively of the reset hammers 4.1, 4.2, 4.3 being placed so that one of the hammers, in the example illustrated the third hammer 4.3, bears against said return stop 8.4 once the user no longer applies manual force to the first control means 1.
  • said control return spring of the second control means 2 returns the latter as well as the reset hammers 4.1, 4.2, 4.3, through the return means 8, in their respective rest positions.
  • This first hammer 4.1 pushes the return bar 8 towards the second - 4.2 and third hammers 4.3, so that the return bar holds the hammers 4.1, 4.2, 4.3 in a position away from the hearts, the return stop 8.4 limiting the distance of the hammers 4.1, 4.2, 4.3 cores 3.1, 3.2, 3.3 corresponding.
  • this rest position there is also a small game in rotation that the second - 4.2 and third 4.3 hammers have, since the second - 8.2 and third pivot 8.3 mounted on these hammers are free in their respective housing on the return bar 8, while the first hammer 4.1 has no play.
  • all the hammers 4.1, 4.2, 4.3 are far from the hearts 3.1, 3.2, 3.3 and held in this position, via the return bar 8, by the control return spring.
  • the figure 2a represents a view from above of the reset device according to the Figures 1a to 1c in its position just after the beginning of the first phase of the actuation of the first control means 1 following the application of a manual force by the user of the corresponding timepiece, and thus shows the step in which the device has just left the rest position.
  • the user rotates the second control means 2 and the arming and triggering means 6.
  • This arming and triggering means 6 is, in this phase of the actuation , used to arm the hammer springs 5.1, 5.2, 5.3 by means of the pins 6.1, 6.2, 6.3 it carries.
  • the figure 2b is a top view of the device in its position during the first phase of said actuation when, when the pressure on the push button 1 by the user continues, the means of arming and trigger 6 comes into contact with the locking means 7, therefore at the moment when the arming and triggering means 6 is not only used to arm the hammer springs 5.1, 5.2, 5.3, but where it also performs a function trigger. Indeed, during this phase, on the one hand, the first hammer 4.1 is forced stronger and stronger by its spring 5.1, which in turn is armed more and more strong by the winding pin 6.1, while remaining limited in rotation by the locking pin 7.2 mounted on the locking means 7.
  • the springs 5.2, 5.3 of the second - 4.2 and third hammers 4.3 arm themselves simultaneously, since these hammers 4.2 4.3 can not fall down no more on their heart 3.2, 3.3 respective because the bar 8, blocked by the first hammer 4.1, remotely.
  • a contact is created between the triggering portion 6.4, that is to say the inclined plane or the rounded edge 6.4, the arming and triggering means 6 and the locking means 7, which The lock pin 7.2 mounted on the latter then slides along the notch 4.1.4 of the hammer 4.1, before disengaging it.
  • FIG. 2c is a top view of the device in its position at the end of the first phase of said actuation just before the moment when the arming and triggering means 6 causes, by means of the locking means 7, the release of the hammer from resetting with which it cooperates.
  • Figure 2c shows the position corresponding to the maximum arming of the hammer springs 5.1, 5.2, 5.3 and just before the release of the hammers 4.1, 4.2, 4.3, namely before the moment when the locking pin 7.2 mounted on the locking means 7 is disengagement of notch 4.1.4 of the first hammer 4.1.
  • the triggering moment corresponds to the moment when the locking pin 7.2 can no longer retain the first hammer 4.1 and then slides along said guide portion 4.1.5 of the first hammer 4.1, no longer opposing restraint to the movement of this hammer 4.1, except for negligible friction created by the action of the return spring of the locking means 7 which plates the locking pin 7.2 against this guide portion 4.1.5 of the first hammer 4.1.
  • the figure 2d is a top view of the device in its position during the second phase of said actuation, when the pressure on the pushbutton 1 by the user continues, once the reset hammers 4.1, 4.2, 4.3 are slaughtered on the corresponding reset cams 3.1, 3.2, 3.3.
  • the first hammer 4.1 being released at the end of the actuation phase illustrated in FIG. Figure 2c
  • the return bar 8 can move the same, because it is linked to the first hammer 4.1.
  • the reminder bar was the only piece that retained the second - 4.2 and third 4.3 hammers, the latter two are also released.
  • the hammers 5.1, 5.2, 5.3 thus fall down with a well defined resetting force, which corresponds to the maximum arming force of the hammer springs 5.1, 5.2, 5.3 reached in the position illustrated in FIG. the Figure 2c , on the hearts 3.1, 3.2, 3.3.
  • the hammer springs 5.1, 5.2, 5.3 were armed by the force of the user. The energy accumulated at this stage is sufficient to perform the reset.
  • the springs 5.1, 5.2, 5.3 still maintain a residual armature, that is to say that the springs 5.1, 5.2, 5.3 are still partially armed after the hammers 4.1, 4.2, 4.3 are supported on their core 3.1, 3.2, 3.3.
  • the hammers 5.1, 5.2, 5.3 apply a holding force, which corresponds to the residual force of the hammer springs 5.1, 5.2, 5.3 in the position illustrated in FIG. figure 2d , on these hearts 3.1, 3.2, 3.3. Then, continuing to press the pusher, the user continues to arm the springs 5.1, 5.2, 5.3, although the hammers 4.1, 4.2, 4.3 are already resting on their core 3.1, 3.2, 3.3, so as to maintain the pressure on the hearts.
  • the figure 2e is a top view of the device in its position once the first control means has been released by the user, so that the reset hammers 4.1, 4.2, 4.3 and the locking means 7 have returned to their resting positions. Indeed, when the user releases the push button 1, the control return spring pushes the second control means 2 and the arming and triggering means 6 in the rest position illustrated in FIG. figure 1b . In this return phase, the free end 2.2 of the second control means 2 abuts against the first hammer 4.1. From this moment, the three hammers 4.1, 4.2, 4.3 are removed from the cores 3.1, 3.2, 3.3, via the second control means 2, respectively of the return bar 8.
  • a second embodiment of a resetting device according to the present invention is illustrated schematically and by way of example to Figure 3a to 3c . If the other elements of this device, apart from having a different shape or location without producing a substantial difference, are identical with respect to the device according to the first embodiment, the return means 8 is realized, in the second embodiment of the device, by an additional arm 4.1.2, 4.2.2, 4.3.2 located on at least one of the reset hammers 4.1, 4.2, 4.3.
  • Figures 3a to 3c also underline that the device according to this second embodiment can advantageously be equipped with reset hammers 4.1, 4.2, 4.3 which all have the same geometry, so that they have a weight and a moment of identical inertia. This further improves the accuracy of the moment at which the hammers strike on their respective heart, since, apart from the manufacturing tolerances, it should in this case all show the same behavior.
  • the hammer springs 5.1, 5.2, 5.3 of the second embodiment of the device are preferably made by flat springs with two elastic arms whose first arm serves to receive a reinforcing force through the means of arming and trigger 6, similarly to the free end of the flat springs of the first embodiment of the device, and the second arm is used to transmit the winding force, once the springs are armed, the hammer to zero corresponding 4.1, 4.2, 4.3.
  • the base of these hammer springs 5.1, 5.2, 5.3, located between the two elastic arms, is mounted on the reset hammers 4.1, 4.2, 4.3, preferably concentrically with respect to the pivot axis 4.1.1, 4.2.1, 4.3.1 corresponding.
  • the operation of the resetting device according to the second embodiment is entirely analog to that which has been explained with respect to FIGS. 2a to 2e illustrating the operation of the resetting device according to the first embodiment, except that it is the additional arms 4.1.2, 4.2.2, 4.3.2 of the reset hammers 4.1, 4.2, 4.3 instead of the return bar 8 provided in the first embodiment which maintains the distance between these three hammers and guarantees an even greater independence between the reset hammers 4.1, 4.2, 4.3 during the phase of their striking. against the corresponding heart 3.1, 3.2, 3.3.
  • the Figures 4a to 4e correspond to FIGS.
  • the reset only takes place if the manual force applied by the user of the timepiece to the first control means 1 exceeds a value predefined threshold which normally corresponds to the sum of the arming forces of the hammer springs 5.1, 5.2, 5.3 and the control return spring.
  • the reset force applied by the hammers on the cams is always identical and corresponds to a predefined value, namely the maximum arming force mentioned above of the hammer springs 5.1, 5.2, 5.3, these factors. to guarantee a high security in the operation of the device.
  • the second embodiment is particularly advantageous in this regard, since it provides no direct kinematic link that could occur between the hammers during their strike phase.
  • identical geometry of all the hammers as also provided in the second embodiment of the device only reinforces these advantages.
  • the construction is robust and as compact as possible as well as simple and reliable during use.
  • the resetting device according to the present invention can be integrated into all kinds of timepieces, preferably in mechanical wristwatches, especially in watches. chronographs or splitters. It is also possible to use it in electronic watches.

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

Description

Champs de l'inventionFields of the invention

La présente invention a pour objet un dispositif de remise à zéro pour pièce d'horlogerie, notamment pour montre chronographe, le dispositif comportant un premier moyen de commande, un deuxième moyen de commande lié cinématiquement audit premier moyen de commande, au moins deux cames de remise à zéro, ainsi qu'au moins deux marteaux de remise à zéro correspondants étant pivotés indépendamment l'un de l'autre et aptes à être actionnés de sorte à coopérer avec une came de remise à zéro correspondante.The subject of the present invention is a timepiece reset device, particularly for a chronograph watch, the device comprising a first control means, a second control means kinematically connected to said first control means, at least two cams of reset, as well as at least two corresponding reset hammers being pivoted independently of each other and able to be actuated so as to cooperate with a corresponding reset cam.

Cette invention concerne plus spécifiquement des pièces d'horlogerie, notamment des montres bracelet, ayant un mouvement mécanique et étant équipées d'un mécanisme de chronographe, voire de rattrapante. Dans ce contexte, il est courant que les aiguilles de secondes, de minutes, et des heures, agencées éventuellement en tant qu'aiguilles de rattrapante, sont chacune montées sur un axe équipé d'une came en forme de coeur qui peut coopérer avec un marteau correspondant, ceci afin de faire revenir les aiguilles dans leurs positions de repos, dans le cas d'une remise à zéro, voire dans une position définie par les aiguilles de référence, dans le cas d'un mécanisme de rattrapante. Dans les mécanismes conventionnels, les marteaux sont souvent agencés sur une pièce monobloc. Ceci peut poser des problèmes du fait de la force élevée exercée par une telle pièce, de la synchronisation nécessaire au niveau du moment de frappe sur les coeurs individuels, de la précision de fabrication en découlant, de l'encombrement d'une telle pièce, et encore d'autres désavantages.This invention relates more specifically to timepieces, including wristwatches, having a mechanical movement and being equipped with a chronograph mechanism, or even catch-up. In this context, it is common for the second, minute, and hour hands, optionally arranged as jumper needles, are each mounted on an axis equipped with a heart-shaped cam which can cooperate with a corresponding hammer, in order to return the needles in their rest positions, in the case of a reset, or in a position defined by the reference hands, in the case of a split mechanism. In conventional mechanisms, the hammers are often arranged on a single piece. This can cause problems because of the high force exerted by such a part, the necessary synchronization at the moment of striking on the individual cores, the resulting manufacturing accuracy, the size of such a part, and other disadvantages.

État de l'art antérieurState of the prior art

Ainsi, il a déjà été proposé dans ce contexte d'utiliser un agencement de marteaux indépendants. Par exemple, la demande de brevet EP 2 241 945 propose un mécanisme de chronographe disposant de marteaux de secondes et - de minutes pivotés indépendamment l'un sur l'autre et liés par un organe de liaison. Si l'agencement proposé dispose de ressorts agissant indépendamment sur les marteaux, il nécessite pourtant, en outre du fait dudit organe de liaison, un pivotement coaxial des marteaux ainsi qu'un sautoir de compteur de minutes pivoté angulairement concentriquement à la roue de compteur de minutes, ce qui limite considérablement l'utilisation de ce dispositif. Une autre constellation a été proposée dans le document EP 1 890 205 . Le dispositif correspondant comporte plusieurs marteaux pouvant être actionnés par un organe de commande pour coopérer avec un coeur correspondant. Les marteaux sont pivotants autour de pivots respectifs indépendants ainsi qu'articulés audit organe de commande, de sorte qu'un mouvement de translation de ce dernier provoque par sa liaison cinématique avec les marteaux directement une coopération entre les marteaux et les coeurs correspondants. Une telle liaison cinématique directe n'est pourtant pas optimale. Par ailleurs, cela implique que le mécanisme n'a pas de ressorts tendant à appliquer les marteaux contre les coeurs et le manque potentiel de précision doit être compensé, en outre, en rendant les bras des marteaux élastique. Il est donc à constater que les solutions de l'art antérieur actuellement connu ne sont pas complètement satisfaisantes et/ou ne sont pas utilisables pour tout type de mécanisme de chronographe.Thus, it has already been proposed in this context to use an arrangement of independent hammers. For example, the patent application EP 2 241 945 proposes a chronograph mechanism with hammers of seconds and minutes independently rotated on one another and linked by a connecting member. If the proposed arrangement has springs acting independently on the hammers, it also requires, furthermore because of said connecting member, a coaxial pivoting of the hammers and a minute counter jumper pivoted angularly concentrically to the counter wheel. minutes, which greatly limits the use of this device. Another constellation has been proposed in the document EP 1 890 205 . The corresponding device comprises several hammers that can be actuated by a control member to cooperate with a corresponding core. The hammers are pivotable about respective independent pivots as well as articulated to said control member, so that a translational movement of the latter causes by its kinematic connection with the hammers directly a cooperation between the hammers and corresponding cores. Such a direct kinematic connection is however not optimal. Moreover, this implies that the mechanism has no springs tending to apply the hammers against the hearts and the potential lack of precision must be compensated, in addition, making the arms of the hammers elastic. It should therefore be noted that the solutions of the prior art currently known are not completely satisfactory and / or can not be used for any type of chronograph mechanism.

Résumé de l'inventionSummary of the invention

Le but de la présente invention est donc de remédier, au moins partiellement, aux inconvénients des dispositifs connus et de réaliser un dispositif de remise à zéro équipé de marteaux indépendants qui est doté d'une sécurité élevée dans son fonctionnement, d'une grande précision au niveau de l'actionnement simultané des marteaux, ainsi que d'une force bien définie s'appliquant aux cames en forme de coeur. Il est aussi un but de la présente invention de réaliser ce dispositif par une construction robuste et aussi peu encombrant que possible ainsi que simple et fiable lors de l'utilisation. Le dispositif devrait être adapté à une utilisation aussi bien dans un mécanisme de chronographe proprement dit ainsi que dans toute autre application similaire, tel qu'un mécanisme de rattrapante.The object of the present invention is therefore to remedy, at least partially, the disadvantages of the known devices and to realize a reset device equipped with independent hammers which is endowed with a high security in its operation, a high accuracy at the level of the simultaneous actuation of the hammers, as well as a well-defined force applying to the cams in the shape of a heart. It is also an object of the present invention to provide this device with a robust construction and as little space as possible as well as simple and reliable in use. The device should be suitable for use both in a chronograph mechanism itself as well as in any other similar application, such as a split-second mechanism.

A cet effet, la présente invention propose un dispositif de remise à zéro du type susmentionné qui se distingue par les caractéristiques énoncées à la revendication 1. En particulier, un dispositif selon la présente invention comporte au moins deux ressorts de marteau dont chacun est susceptible d'exercer une force de précontrainte tendant à faire pivoter un marteau de remise à zéro en direction de la came de remise à zéro correspondante, et un moyen d'armage et de déclenchement ainsi qu'un moyen de verrouillage, ledit moyen d'armage et de déclenchement étant apte à armer lesdits ressorts de marteau lors d'une première phase d'un actionnement du premier moyen de commande ainsi que de coopérer, lors d'une deuxième phase de l'actionnement du premier moyen de commande, avec ledit moyen de verrouillage de sorte à ce que ce moyen de verrouillage passe d'une première position de repos, dans laquelle le moyen de verrouillage maintient les marteaux de remise à zéro dans leurs positions de repos, à une deuxième position de déclenchement, dans laquelle le moyen de verrouillage libère les marteaux de remise à zéro qui viennent, chacun sous l'action du ressort de marteau correspondant, dans leurs positions de coopération avec la came de remise à zéro correspondante.For this purpose, the present invention proposes a resetting device of the aforementioned type which is distinguished by the features set forth in claim 1. In particular, a device according to the present invention comprises at least two hammer springs each of which is capable of exerting a prestressing force tending to rotate a reset hammer towards the corresponding reset cam, and a winding and triggering means and a locking means, said winding means and triggering means being adapted to arm said hammer springs during a first phase of an actuation of the first control means and to cooperate, during a second phase of the actuation of the first control means, with said means of locking so that this locking means passes from a first rest position, wherein the locking means holds the reset hammers da ns their rest positions, at a second trigger position, wherein the locking means releases the reset hammers that come, each under the action of the corresponding hammer spring, in their positions of cooperation with the delivery cam corresponding zero.

Par ces mesures, la remise à zéro s'effectue uniquement si la force manuelle appliquée par l'utilisateur de la pièce d'horlogerie sur le premier moyen de commande dépasse une valeur de seuil prédéfinie. De plus, la force appliquée par les marteaux sur les cames est toujours identique et également d'une valeur prédéfinie. Cela est achevé tout en garantissant une indépendance maximale aux marteaux qui n'ont pas de lien cinématique direct entre eux, tout au moins pas lors de leur application sur les cames.By these measurements, the reset is carried out only if the manual force applied by the user of the timepiece on the first control means exceeds a predefined threshold value. In addition, the applied force by the hammers on the cams is always the same and also a predefined value. This is complete while ensuring maximum independence for hammers that do not have a direct kinematic link between them, at least not when applied to the cams.

Ces avantages peuvent encore être renforcés en agençant le moyen d'armage et de déclenchement ainsi que le moyen de verrouillage d'une manière avantageuse, telle que cela ressort de revendications dépendantes. De même, le dispositif comporte un moyen de rappel des marteaux de remise à zéro apte à faire revenir lesdits marteaux dans leur position de repos suite à leur actionnement, ce moyen de rappel pouvant être agencé de sorte à maintenir de manière optimale l'indépendance entre les marteaux. Par ailleurs, les marteaux de remise à zéro d'un dispositif selon la présente invention peuvent avantageusement tous avoir la même géométrie. Tous ces facteurs contribuent à une réalisation particulièrement simple et fiable d'un tel dispositif.These advantages can be further enhanced by arranging the arming and tripping means and the locking means in an advantageous manner as evidenced by dependent claims. Similarly, the device comprises a return means of reset hammers adapted to return said hammers in their rest position following their actuation, the restoring means being arranged to maintain optimally independence between the hammers. Moreover, the resetting hammers of a device according to the present invention may advantageously all have the same geometry. All these factors contribute to a particularly simple and reliable realization of such a device.

D'autres caractéristiques, ainsi que les avantages correspondants, ressortiront des revendications dépendantes, ainsi que de la description exposant ci-après l'invention plus en détail.Other features, as well as the corresponding advantages, will emerge from the dependent claims, as well as from the description which sets forth the invention in more detail.

Description des dessinsDescription of the drawings

Les dessins annexés représentent schématiquement et à titre d'exemple plusieurs formes d'exécution de l'invention.

  • La figure 1a montre une vue en perspective schématique d'une première forme d'exécution du dispositif de remise à zéro selon la présente invention; les figures 1b et 1c représentent une vue de dessus, respectivement une coupe longitudinale de ce dispositif le long de la ligne I-I indiquée dans la figure 1b.
  • La figure 2a représente une vue de dessus du dispositif de remise à zéro selon les figures 1a à 1c dans sa position juste après le début de la première phase de l'actionnement du premier moyen de commande, la figure 2b est une vue de dessus du dispositif dans sa position lors de la première phase dudit actionnement au moment où le moyen d'armage et de déclenchement entre en contact avec le moyen de verrouillage, la figure 2c est une vue de dessus du dispositif dans sa position à la fin de la première phase dudit actionnement juste avant le moment où le moyen d'armage et de déclenchement provoque la libération des marteaux de remise à zéro, la figure 2d est une vue de dessus du dispositif dans sa position lors de la deuxième phase dudit actionnement une fois que les marteaux de remise à zéro se sont abattus sur les cames de remise à zéro correspondantes, et la figure 2e est une vue de dessus du dispositif dans sa position une fois que le premier moyen de commande a été relâché par l'utilisateur, de sorte que les marteaux de remise à zéro ainsi que le moyen de verrouillage sont revenus à leurs positions de repos.
  • La figure 3a montre une vue en perspective schématique d'une deuxième forme d'exécution du dispositif de remise à zéro selon la présente invention; les figures 3b et 3c représentent une vue de dessus, respectivement une coupe longitudinale de ce dispositif le long de la ligne I-I indiquée dans la figure 3b.
  • La figure 4a représente une vue de dessus du dispositif de remise à zéro selon les figures 3a à 3c dans sa position juste après le début de la première phase de l'actionnement du premier moyen de commande, la figure 4b est une vue de dessus du dispositif dans sa position lors de la première phase dudit actionnement au moment où le moyen d'armage et de déclenchement entre en contact avec le moyen de verrouillage, la figure 4c est une vue de dessus du dispositif dans sa position à la fin de la première phase dudit actionnement juste avant le moment où le moyen d'armage et de déclenchement provoque la libération des marteaux de remise à zéro, la figure 4d est une vue de dessus du dispositif dans sa position lors de la deuxième phase dudit actionnement une fois que les marteaux de remise à zéro se sont abattus sur les cames de remise à zéro correspondantes, et la figure 4e est une vue de dessus du dispositif dans sa position une fois que le premier moyen de commande a été relâché par l'utilisateur, de sorte que les marteaux de remise à zéro ainsi que le moyen de verrouillage sont revenus à leurs positions de repos.
The accompanying drawings show schematically and by way of example several embodiments of the invention.
  • The figure 1a shows a schematic perspective view of a first embodiment of the resetting device according to the present invention; the figures 1b and 1 C represent a view from above, respectively a longitudinal section of this device along the line II indicated in the figure 1b .
  • The figure 2a represents a view from above of the reset device according to the Figures 1a to 1c in its position just after the beginning of the first phase of the actuation of the first control means, the figure 2b is a top view of the device in its position during the first phase of said actuation at the moment when the arming and tripping means comes into contact with the locking means, the Figure 2c is a top view of the device in its position at the end of the first phase of said actuation just before the moment when the arming and tripping means causes the release of the reset hammers, the figure 2d is a top view of the device in its position during the second phase of said actuation once the reset hammers have fallen on the corresponding reset cams, and the figure 2e is a top view of the device in its position once the first control means has been released by the user, so that the reset hammers and the locking means have returned to their rest positions.
  • The figure 3a shows a schematic perspective view of a second embodiment of the resetting device according to the present invention; the figures 3b and 3c represent a view from above, respectively a longitudinal section of this device along the line II indicated in the figure 3b .
  • The figure 4a represents a view from above of the reset device according to the Figures 3a to 3c in its position just after the beginning of the first phase of the actuation of the first control means, the figure 4b is a top view of the device in its position during the first phase of said actuation at the moment when the arming and tripping means comes into contact with the locking means, the figure 4c is a top view of the device in its position at the end of the first phase of said actuation just before the moment when the means of arming and tripping causes the release of the reset hammers, the figure 4d is a top view of the device in its position during the second phase of said actuation once the reset hammers have fallen on the corresponding reset cams, and the figure 4e is a top view of the device in its position once the first control means has been released by the user, so that the reset hammers and the locking means have returned to their rest positions.

Description détaillée de l'inventionDetailed description of the invention

L'invention sera maintenant décrite en détail en référence aux dessins annexés illustrant à titre d'exemple une forme d'exécution de l'invention.The invention will now be described in detail with reference to the accompanying drawings illustrating by way of example an embodiment of the invention.

La présente invention se rapporte à un dispositif de remise à zéro destiné à être intégré dans une pièce d'horlogerie, de préférence dans une montre bracelet ayant un mouvement mécanique. Pour des raisons de simplification du langage utilisé, on parlera par la suite indifféremment de « pièce d'horlogerie » et de « montre », sans pour autant vouloir limiter par ailleurs la portée des explications correspondantes qui s'étendent dans tous les cas à tout type de pièces d'horlogerie, ayant soit une source d'énergie mécanique soit électrique. De plus, une telle pièce d'horlogerie comprend normalement un mécanisme de chronographe ou un mécanisme de rattrapante qui est destiné à être équipée d'un dispositif de remise à zéro selon la présente invention. Étant donné que les mécanismes de chronographe et de rattrapante, voire d'autres mécanismes similaires qui sont adaptés à être combinés avec le dispositif selon l'invention, sont connus à l'homme du métier, la description suivante se limitera à la structure et au fonctionnement dudit dispositif.The present invention relates to a reset device intended to be integrated in a timepiece, preferably in a wristwatch having a mechanical movement. For reasons of simplification of the language used, we will speak indifferently later of "timepiece" and "watch", without wanting also to limit the scope of the corresponding explanations which extend in any case to any type of timepieces, having either a source of mechanical or electrical energy. In addition, such a timepiece normally comprises a chronograph mechanism or a split-second mechanism which is intended to be equipped with a reset device according to the present invention. Since chronograph and counterclockwise mechanisms, or even other similar mechanisms which are adapted to be combined with the device according to the invention, are known to those skilled in the art, the following description will be limited to the structure and operation of said device.

Afin de commenter d'abord la structure et les composants d'un dispositif de remise à zéro selon la présente invention, on se réfère aux figures 1a à 1c qui illustrent schématiquement et à titre d'exemple une première forme d'exécution d'un tel dispositif par une vue en perspective schématique, par une vue de dessus, respectivement par une coupe longitudinale de ce dispositif le long de la ligne I-I indiquée dans la figure 1b. Il en ressort que le dispositif comporte, comme les dispositifs de l'art antérieur, un premier moyen de commande 1, un deuxième moyen de commande 2 lié cinématiquement audit premier moyen de commande 1, au moins deux cames de remise à zéro 3.1, 3.2, 3.3, et au moins deux marteaux de remise à zéro 4.1, 4.2, 4.3 correspondants. Les marteaux 4.1, 4.2, 4.3 sont pivotés indépendamment l'un de l'autre autour des axes de pivotement 4.1.1, 4.2.1, 4.3.1, positionnés normalement non-concentriquement l'un par rapport à l'autre, et sont aptes à être actionnés de sorte à coopérer avec une came de remise à zéro 3.1, 3.2, 3.3 correspondante. À cet effet, ils ont chacun un bras 4.1.3, 4.2.3, 4.3.3 dont l'extrémité libre comprend une surface, de préférence, plane formant le marteau proprement dit et susceptible d'être en appui contre la came de remise à zéro 3.1, 3.2, 3.3 correspondante. Ces cames 3.1, 3.2, 3.3 sont normalement en forme de coeur, de préférence en forme de coeur asymétrique afin d'obtenir un meilleur rendement de l'ensemble marteau-coeur, et sont montées sur l'axe de rotation de l'organe d'indication correspondante qui est souvent une aiguille ou un disque, voire sur l'axe d'une roue en liaison cinématique directe ou indirecte avec l'axe de rotation de cette organe. Il peut s'agir par exemple des aiguilles des secondes, des minutes, et des heures d'un mécanisme de chronographe ou d'un mécanisme de rattrap-ante correspondant, de sorte que les trois marteaux 4.1, 4.2, 4.3, respectivement les trois coeurs 3.1, 3.2, 3.3 illustrés aux figures correspondent aux marteaux, respectivement aux coeurs des heures, des minutes, et dessecondes. Le premier moyen de commande 1 est mobile en translation et le deuxième moyen de commande 2 est mobile en rotation autour d'un pivot 2.1, un ressort de rappel de commande non-illustré aux figures tendant à appliquer l'extrémité 2.2 du deuxième moyen de commande 2 contre un des marteaux, de préférence contre le premier marteau4.1, tel qu'illustré aux figures 1a et 1b. Normalement, le premier moyen de commande 1 est réalisé par un bouton poussoir sur lequel l'utilisateur de la pièce d'horlogerie peut appliquer une force manuelle afin de provoquer, par ledit lien cinématique entre les premier - 1 et deuxième moyen de commande 2, un pivotement de ce deuxième moyen de commande 2. Une butée d'armage 6.8, visible par exemple aux figures 1b et 3b, limite la course du deuxième moyen de commande 2 dans la direction l'éloignant des marteaux 4.1, 4.2, 4.3, suite à l'application d'une force manuelle sur le premier moyen de commande 1 par l'utilisateur. Le premier moyen de commande 1 permet ainsi, par l'intermédiaire du deuxième moyen de commande 2, de commander une fonction correspondante, par exemple la remise à zéro des aiguilles d'un mécanisme de chronographe ou un mécanisme de rattrapante.In order to first comment on the structure and components of a resetting device according to the present invention, reference is made to Figures 1a to 1c which illustrate schematically and by way of example a first embodiment of such a device by a schematic perspective view, by a view from above, respectively by a longitudinal section of this device along the line II indicated in FIG. figure 1b . It follows that the device comprises, as the devices of the prior art, a first control means 1, a second control means 2 kinematically connected to said first control means 1, at least two reset cams 3.1, 3.2 , 3.3, and at least two corresponding reset hammers 4.1, 4.2, 4.3. The hammers 4.1, 4.2, 4.3 are pivoted independently of one another about the pivot axes 4.1.1, 4.2.1, 4.3.1, positioned normally non-concentrically with respect to each other, and are capable of being actuated so as to cooperate with a corresponding reset cam 3.1, 3.2, 3.3. For this purpose, they each have an arm 4.1.3, 4.2.3, 4.3.3 whose free end comprises a surface, preferably flat, forming the actual hammer and capable of being in abutment against the delivery cam to zero corresponding 3.1, 3.2, 3.3. These cams 3.1, 3.2, 3.3 are normally heart-shaped, preferably asymmetrically-shaped heart to obtain a better performance of the hammer-core assembly, and are mounted on the axis of rotation of the body of the body. corresponding indication which is often a needle or a disc, or on the axis of a wheel in direct or indirect kinematic connection with the axis of rotation of this member. It may be, for example, the seconds, minutes, and hours hands of a corresponding chronograph mechanism or catch-ante mechanism, so that the three hammers 4.1, 4.2, 4.3, respectively the three hearts 3.1, 3.2, 3.3 illustrated in the figures correspond to hammers, respectively to the hearts of hours, minutes, and seconds. The first control means 1 is movable in translation and the second control means 2 is rotatable about a pivot 2.1, a non-illustrated control return spring the figures tending to apply the end 2.2 of the second control means 2 against one of the hammers, preferably against the first hammer4.1, as illustrated in FIGS. Figures 1a and 1b . Normally, the first control means 1 is made by a push button on which the user of the timepiece can apply a manual force to cause, by said kinematic link between the first - 1 and second control means 2, a pivoting of this second control means 2. An armature stop 6.8, visible for example to figures 1b and 3b limits the travel of the second control means 2 in the direction away from the hammers 4.1, 4.2, 4.3, following the application of a manual force on the first control means 1 by the user. The first control means 1 thus makes it possible, by means of the second control means 2, to control a corresponding function, for example the resetting of the hands of a chronograph mechanism or a split-second mechanism.

Contrairement aux dispositifs de l'art antérieur, le dispositif comporte au moins deux ressorts de marteau 5.1, 5.2, 5.3 dont chacun est susceptible d'exercer une force de précontrainte tendant à faire pivoter un des marteaux de remise à zéro 4.1, 4.2, 4.3 en direction de la came de remise à zéro 3.1, 3.2, 3.3 correspondante, et un moyen d'armage et de déclenchement 6 ainsi qu'un moyen de verrouillage 7. Dans la première forme d'exécution du dispositif illustrée aux figures 1a à 1c, les ressorts de marteau sont réalisés par des ressorts plats dont une extrémité est montée de manière rigide sur le marteau correspondant et dont l'autre extrémité est libre afin de pouvoir recevoir une force d'armage par l'intermédiaire du moyen d'armage et de déclenchement 6, tel que cela deviendra plus claire par la suite de la description. Bien évidemment, les ressorts pourraient être montés sur ledit moyen d'armage et de déclenchement 6 et leurs extrémités libres coopérer avec les marteaux 4.1, 4.2, 4.3, cette constellation n'étant pas illustré aux figures.Unlike the devices of the prior art, the device comprises at least two hammer springs 5.1, 5.2, 5.3 each of which is capable of exerting a prestressing force tending to pivot one of the reset hammers 4.1, 4.2, 4.3 in the direction of the corresponding reset cam 3.1, 3.2, 3.3, and a means of arming and triggering 6 and a locking means 7. In the first embodiment of the device illustrated in FIGS. Figures 1a to 1c , the hammer springs are made by flat springs one end of which is mounted rigidly on the corresponding hammer and the other end of which is free to receive a reinforcing force through the winding means and trigger 6, as will become clear later in the description. Of course, the springs could be mounted on said arming and triggering means 6 and their free ends cooperate with the hammers 4.1, 4.2, 4.3, this constellation not being illustrated in the figures.

En effet, ledit moyen d'armage et de déclenchement 6 est apte à armer lesdits ressorts de marteau 5.1, 5.2, 5.3 lors d'une première phase d'un actionnement du premier moyen de commande 1 ainsi que de coopérer, lors d'une deuxième phase de l'actionnement du premier moyen de commande 1, avec ledit moyen de verrouillage 7 de sorte à ce que ce moyen de verrouillage 7 passe d'une première position de repos, dans laquelle le moyen de verrouillage 7 maintient les marteaux de remise à zéro 4.1, 4.2, 4.3 dans leurs positions de repos, à une deuxième position de déclenchement. Dans cette deuxième position, le moyen de verrouillage 7 libère les marteaux de remise à zéro 4.1, 4.2, 4.3 qui viennent alors, chacun sous l'action du ressort de marteau 5.1, 5.2, 5.3 correspondant, dans leurs positions de coopération avec la came de remise à zéro 3.1, 3.2, 3.3 correspondante, tel que cela sera décrit plus en détail dans la suite de la description.Indeed, said arming and triggering means 6 is able to arm said hammer springs 5.1, 5.2, 5.3 during a first phase of an actuation of the first control means 1 as well as to cooperate, during a second phase of the actuation of the first control means 1, with said locking means 7 so that the locking means 7 passes from a first rest position, wherein the locking means 7 holds the reset hammers at zero, 4.1, 4.2, 4.3 in their rest positions, at a second trip position. In this second position, the locking means 7 releases the reset hammers 4.1, 4.2, 4.3 which then come, each under the action of the hammer spring 5.1, 5.2, 5.3 corresponding, in their positions of cooperation with the cam corresponding reset, 3.1, 3.2, 3.3, as will be described in more detail in the following description.

Les figures 1a et 1b montrent de manière claire que, dans la première forme d'exécution du dispositif selon l'invention, le moyen d'armage et de déclenchement 6 est réalisé par une barre liée cinématiquement au deuxième moyen de commande 2 et comportant au moins deux, dans l'exemple illustré aux figures trois éléments d'armage 6.1, 6.2, 6.3 dont chacun est susceptible de venir en appui contre l'extrémité libre du ressort de marteau 5.1, 5.2, 5.3 correspondant, de sorte à être susceptible d'armer, lors de ladite première phase de l'actionnement du premier moyen de commande 1, ledit ressort de marteau 5.1, 5.2, 5.3. Les éléments d'armage peuvent être réalisés, de préférence, par des goupilles d'armage 6.1, 6.2, 6.3 montées à une distance adéquate le long de la barre 6.The Figures 1a and 1b show clearly that, in the first embodiment of the device according to the invention, the arming and triggering means 6 is formed by a bar kinematically connected to the second control means 2 and comprising at least two, in the example illustrated in the figures three armoring elements 6.1, 6.2, 6.3 each of which is capable of bearing against the free end of the hammer spring 5.1, 5.2, 5.3 corresponding, so as to be capable of arming, when said first phase of the actuation of the first control means 1, said hammer spring 5.1, 5.2, 5.3. The arming elements can be preferably made by arming pins 6.1, 6.2, 6.3 mounted at a suitable distance along the bar 6.

Le moyen d'armage et de déclenchement 6 comporte aussi une partie de déclenchement 6.4 apte à coopérer avec le moyen de verrouillage 7, de sorte à ce que ce dernier passe, lors de ladite deuxième phase de l'actionnement du premier moyen de commande 1, de sa première position de repos, dans laquelle le moyen de verrouillage 7 maintient les marteaux de remise à zéro 4.1, 4.2, 4.3 dans leurs positions de repos, à sa deuxième position de déclenchement, dans laquelle le moyen de verrouillage 7 libère les marteaux de remise à zéro 4.1, 4.2, 4.3. Cette partie de déclenchement est réalisée, de préférence, par un plan incliné ou un bord arrondi 6.4 situé proche de son extrémité orientée vers ledit moyen de verrouillage 7 et susceptible d'entrer en contact avec ce moyen de verrouillage 7.The arming and triggering means 6 also comprises a triggering part 6.4 adapted to cooperate with the locking means 7, so that that the latter passes, during said second phase of the actuation of the first control means 1, its first rest position, wherein the locking means 7 maintains the reset hammers 4.1, 4.2, 4.3 in their positions resting, in its second trigger position, wherein the locking means 7 releases the reset hammers 4.1, 4.2, 4.3. This triggering part is preferably formed by an inclined plane or a rounded edge 6.4 located near its end oriented towards said locking means 7 and capable of coming into contact with this locking means 7.

De manière similaire au deuxième moyen de commande 2 qui est normalement articulé à une de ses extrémités au premier moyen de commande 1, la liaison cinématique du moyen d'armage et de déclenchement 6 au deuxième moyen de commande 2 peut par exemple être réalisée par un axe de pivotement 6.7 articulé à l'autre extrémité 2.2 du deuxième moyen de commande 2. Disposant également d'une rainure longitudinale 6.5 dans son extrémité opposée au deuxième moyen de commande 2 dans laquelle un axe de guidage 6.6 monté sur un pont de la pièce d'horlogerie correspondante et visible à titre d'exemple sur la figure 3b est logé, ledit moyen d'armage et de déclenchement 6 est alors déplaçable, suite à un actionnement du premier moyen de commande 1, en rotation autour dudit axe de guidage 6.6. Le mouvement de rotation dispose, de préférence, d'un grand rayon.Similarly to the second control means 2 which is normally articulated at one of its ends to the first control means 1, the kinematic connection of the arming and tripping means 6 to the second control means 2 may for example be carried out by a pivot pin 6.7 articulated at the other end 2.2 of the second control means 2. Also having a longitudinal groove 6.5 in its end opposite to the second control means 2 in which a guide shaft 6.6 mounted on a bridge of the workpiece corresponding timepiece and visible as an example on the figure 3b is housed, said arming and triggering means 6 is then movable, following an actuation of the first control means 1, in rotation about said guide axis 6.6. The rotational movement preferably has a large radius.

En ce qui concerne ledit moyen de verrouillage 7, il est de préférence réalisé par un levier de verrouillage monté de façon pivotante autour d'un pivot 7.1 et précontraint par un ressort de rappel de verrouillage, en direction d'un des marteaux de remise à zéro 4.1, 4.2, 4.3, contre une butée de verrouillage 7.3 qui définit sa position de repos. De préférence, il est précontraint en direction du premier marteaux de remise à zéro 4.1 qui est situé le plus proche du deuxième moyen de commande 2, mais il est possible qu'il soit précontraint en direction d'un des autres marteaux 4.2, 4.3. Celui des marteaux contre lequel le levier de verrouillage 7 est précontraint, donc normalement et tel qu'illustré aux figures le premier marteaux de remise à zéro 4.1, comporte une encoche 4.1.4 dans laquelle une partie de verrouillage 7.2 du levier de verrouillage 7 peut être engagée, respectivement être désengagée. De plus, au moins ce marteaux comprend, de préférence, encore une partie de guidage 4.1.5, qui peut être légèrement arrondie, permettant de guider la partie de verrouillage 7.2, suite à un désengagement, lors de son mouvement, puis ensuite dans son mouvement de retour vers l'encoche 4.1.4. La partie de verrouillage peut être réalisée par une goupille de verrouillage 7.2 montée sur le levier 7 ou par une partie venue d'une pièce et d'une forme adaptée à être engagée dans ladite encoche 4.1.4 d'un des marteaux de remise à zéro 4.1, 4.2, 4.3.As regards said locking means 7, it is preferably made by a locking lever pivotally mounted about a pivot 7.1 and prestressed by a locking spring, in the direction of one of the reset hammers. zero 4.1, 4.2, 4.3, against a locking stop 7.3 which defines its rest position. Preferably, it is prestressed towards the first reset hammers 4.1 which is located closest to the second control means 2, but it is possible that it is prestressed towards a other hammers 4.2, 4.3. That of the hammers against which the locking lever 7 is prestressed, so normally and as illustrated in the figures the first reset hammers 4.1, comprises a notch 4.1.4 in which a locking portion 7.2 of the locking lever 7 can to be engaged, respectively to be disengaged. In addition, at least this hammer preferably comprises a guide portion 4.1.5, which may be slightly rounded, for guiding the locking portion 7.2, following a disengagement, during its movement, and then in its movement back to notch 4.1.4. The locking portion may be made by a locking pin 7.2 mounted on the lever 7 or by a portion coming from a workpiece and of a shape adapted to be engaged in said notch 4.1.4 of a hammer of delivery to zero 4.1, 4.2, 4.3.

Il en ressort également des figures 1a à 1c que le dispositif de remise à zéro selon la présente invention comporte un moyen de rappel 8 des marteaux de remise à zéro 4.1, 4.2, 4.3 apte à faire revenir les marteaux de remise à zéro 4.1, 4.2, 4.3 dans leur position de repos, suite à leur actionnement. Dans la première forme d'exécution illustrée schématiquement aux figures 1a à 1c, ledit moyen de rappel 8 est réalisé par une barre de rappel liée cinématiquement à chacun des marteaux de remise à zéro 4.1, 4.2, 4.3. Afin de garantir que chaque marteau 4.1, 4.2, 4.3 peut frapper de manière indépendante sur le coeur 3.1, 3.2, 3.3 correspondant, ladite liaison entre la barre de rappel 8 et les marteaux est réalisée quasiment sans jeu avec celui des marteaux de remise à zéro 4.1 qui coopère avec le moyen de verrouillage 7, donc dans la forme d'exécution illustrée aux figures avec le premier marteau 4.1, et avec jeu pour les autres marteaux de remise à zéro 4.2, 4.3. Ceci peut être réalisé en plaçant un premier pivot 8.1 quasiment sans jeu entre le premier marteau 4.1 et la barre de rappel 8, tandis que les deuxième - 8.2 et troisième pivots 8.3 montés sur le deuxième - 4.2, respectivement le troisième marteau 4.3 sont logés avec jeu dans des ouvertures correspondantes de la barre de rappel, la taille respective de ces ouvertures étant plus grande que le diamètre des pivots 8.2, 8.3, tel que visible à la figure 1b. Ce jeu est de préférence de l'ordre de 0,10 mm à 0, 35 mm, lesdites ouvertures étant par ailleurs agencées de sorte que leurs bords ne touchent pas les deuxième-8.2 et troisième pivots 8.3 lorsque les marteaux se trouvent en appui sur le coeur respectif. Une butée de retour 8.4 définit la position de repos de la barre de rappel 8, respectivement des marteaux de remise à zéro 4.1, 4.2, 4.3 en étant placée de sorte à ce qu'un des marteaux, dans l'exemple illustré le troisième marteau 4.3, est en appui contre ladite butée de retour 8.4 une fois que l'utilisateur n'applique plus de force manuelle sur le premier moyen de commande 1. En effet, dans ce cas ledit ressort de rappel de commande du deuxième moyen de commande 2 ramène ce dernier ainsi que les marteaux de remise à zéro 4.1, 4.2, 4.3, par l'intermédiaire du moyen de rappel 8, dans leurs positions de repos respectives.It also results from Figures 1a to 1c that the reset device according to the present invention comprises a return means 8 reset hammers 4.1, 4.2, 4.3 adapted to return the reset hammers 4.1, 4.2, 4.3 in their rest position, continued to their actuation. In the first embodiment schematically illustrated in Figures 1a to 1c , said return means 8 is formed by a return bar kinematically connected to each of the reset hammers 4.1, 4.2, 4.3. In order to guarantee that each hammer 4.1, 4.2, 4.3 can strike independently on the corresponding core 3.1, 3.2, 3.3, said connection between the return bar 8 and the hammers is made almost without play with that of the reset hammers. 4.1 which cooperates with the locking means 7, therefore in the embodiment illustrated in the figures with the first hammer 4.1, and with play for the other reset hammers 4.2, 4.3. This can be achieved by placing a first pivot 8.1 with almost no play between the first hammer 4.1 and the return bar 8, while the second - 8.2 and third pivots 8.3 mounted on the second - 4.2, respectively the third hammer 4.3 are housed with play in openings the respective size of these openings being larger than the diameter of the pivots 8.2, 8.3, as figure 1b . This clearance is preferably of the order of 0.10 mm to 0.35 mm, said openings being moreover arranged so that their edges do not touch the second-8.2 and third pivots 8.3 when the hammers are resting on the respective heart. A return stop 8.4 defines the rest position of the return bar 8, respectively of the reset hammers 4.1, 4.2, 4.3 being placed so that one of the hammers, in the example illustrated the third hammer 4.3, bears against said return stop 8.4 once the user no longer applies manual force to the first control means 1. In fact, in this case said control return spring of the second control means 2 returns the latter as well as the reset hammers 4.1, 4.2, 4.3, through the return means 8, in their respective rest positions.

Les explications précédentes concernant la structure et les composants d'un dispositif de remise à zéro selon la présente invention permettent également de comprendre facilement son fonctionnement, notamment à l'aide des figures 2a à 2e. En effet, dans la position de repos illustrée à la figure 1b, les ressorts de marteaux 5.1, 5.2, 5.3 ne sont pas armés et le moyen de verrouillage 7 se trouve dans sa position de repos, en appui contre la butée de verrouillage 7.3. De même, le ressort de rappel de commande force l'extrémité 2.2 du deuxième moyen de commande 2 à s'appuyer contre le premier marteau 4.1, dans l'exemple illustré aux figures. Ce premier marteau 4.1 pousse la barre de rappel 8 en direction des deuxième - 4.2 et troisième marteaux 4.3, de sorte à ce que la barre de rappel maintient les marteaux 4.1, 4.2, 4.3 dans une position éloignée des coeurs, la butée de retour 8.4 limitant l'éloignement des marteaux 4.1, 4.2, 4.3 des coeurs 3.1, 3.2, 3.3 correspondants. Dans cette position de repos, on remarque aussi un petit jeu en rotation que possèdent les deuxième - 4.2 et troisième marteaux 4.3, étant donné que les deuxième - 8.2 et troisième pivot 8.3 montés sur ces marteaux sont libres dans leur logement respectif sur la barre de rappel 8, tandis que le premier marteau 4.1 n'a pas de jeu. En somme, dans la position de repos, tous les marteaux 4.1, 4.2, 4.3 sont éloignés des coeurs 3.1, 3.2, 3.3 et maintenus dans cette position, par l'intermédiaire de la barre de rappel 8, par le ressort de rappel de commande.The preceding explanations concerning the structure and the components of a resetting device according to the present invention also make it possible to easily understand its operation, especially with the help of FIGS. 2a to 2e . Indeed, in the rest position illustrated in figure 1b , the hammer springs 5.1, 5.2, 5.3 are not armed and the locking means 7 is in its rest position, bearing against the locking abutment 7.3. Likewise, the control return spring forces the end 2.2 of the second control means 2 to bear against the first hammer 4.1, in the example illustrated in the figures. This first hammer 4.1 pushes the return bar 8 towards the second - 4.2 and third hammers 4.3, so that the return bar holds the hammers 4.1, 4.2, 4.3 in a position away from the hearts, the return stop 8.4 limiting the distance of the hammers 4.1, 4.2, 4.3 cores 3.1, 3.2, 3.3 corresponding. In this rest position, there is also a small game in rotation that the second - 4.2 and third 4.3 hammers have, since the second - 8.2 and third pivot 8.3 mounted on these hammers are free in their respective housing on the return bar 8, while the first hammer 4.1 has no play. In sum, in the rest position, all the hammers 4.1, 4.2, 4.3 are far from the hearts 3.1, 3.2, 3.3 and held in this position, via the return bar 8, by the control return spring.

La figure 2a représente une vue de dessus du dispositif de remise à zéro selon les figures 1a à 1c dans sa position juste après le début de la première phase de l'actionnement du premier moyen de commande 1 suite à l'application d'une force manuelle par l'utilisateur de la pièce d'horlogerie correspondante, et elle montre donc l'étape dans laquelle le dispositif vient de quitter la position de repos. En pressant sur le bouton-poussoir 1, l'utilisateur fait pivoter le deuxième moyen de commande 2 ainsi que le moyen d'armage et de déclenchement 6. Ce moyen d'armage et de déclenchement 6 est, dans cette phase de l'actionnement, utilisé pour armer les ressorts de marteaux 5.1, 5.2, 5.3 par l'intermédiaire des goupilles d'armage 6.1, 6.2, 6.3 qu'il porte. En comparant les figures 1b 2a, on note qu'il y a d'abord un petit jeu, qui est de préférence de l'ordre de 0,10 mm à 0,40 mm, à rattraper avant que l'armage des ressorts commence, c'est-à-dire avant que chacun des goupilles d'armage 6.1, 6.2, 6.3 touche l'extrémité libre du ressort de marteau 5.1, 5.2, 5.3 correspondant. Dans cette position, il n'y a plus de contact entre l'extrémité libre 2.2 du deuxième moyen de commande 2 et le premier marteau 4.1. De même, on note que la goupille de verrouillage 7.2 n'entre en contact avec le premier marteau de remise à zéro 4.1, au niveau de son encoche 4.1.4, que dans la position illustrée à la figure 2a, tandis que ce contact n'est pas encore établi dans la position de repos illustrée à la figure 1b.The figure 2a represents a view from above of the reset device according to the Figures 1a to 1c in its position just after the beginning of the first phase of the actuation of the first control means 1 following the application of a manual force by the user of the corresponding timepiece, and thus shows the step in which the device has just left the rest position. By pressing on the push button 1, the user rotates the second control means 2 and the arming and triggering means 6. This arming and triggering means 6 is, in this phase of the actuation , used to arm the hammer springs 5.1, 5.2, 5.3 by means of the pins 6.1, 6.2, 6.3 it carries. Comparing the figures 1b 2a , we note that there is first a small game, which is preferably of the order of 0.10 mm to 0.40 mm, to catch up before the winding of the springs begins, that is to say ie before each of the winding pins 6.1, 6.2, 6.3 touches the free end of the corresponding hammer spring 5.1, 5.2, 5.3. In this position, there is no longer any contact between the free end 2.2 of the second control means 2 and the first hammer 4.1. Likewise, it is noted that the locking pin 7.2 comes into contact with the first reset hammer 4.1, at its notch 4.1.4, only in the position illustrated in FIG. figure 2a , while this contact is not yet established in the rest position illustrated in figure 1b .

La figure 2b est une vue de dessus du dispositif dans sa position lors de la première phase dudit actionnement au moment où, lorsque la pression sur le bouton-poussoir 1 par l'utilisateur se poursuit, le moyen d'armage et de déclenchement 6 entre en contact avec le moyen de verrouillage 7, donc au moment où le moyen d'armage et de déclenchement 6 n'est plus seulement utilisé pour armer les ressorts de marteaux 5.1, 5.2, 5.3, mais où il remplit également une fonction de déclenchement. En effet, lors de cette phase, d'une part, le premier marteau 4.1 est contraint de plus en plus fort par son ressort 5.1, qui à son tour est armé de plus en plus fort par la goupille d'armage 6.1, tout en restant limité en rotation par la goupille de verrouillage 7.2 monté sur le moyen de verrouillage 7. Les ressorts 5.2, 5.3 des deuxième - 4.2 et troisième marteaux 4.3 s'arment simultanément, étant donné que ces marteaux 4.2 4.3 ne peuvent pas s'abattre non plus sur leur coeur 3.2, 3.3 respectif car la barre de rappel 8, bloquée par l'intermédiaire du premier marteau 4.1, les tient à distance. D'autre part, un contact se crée entre la partie de déclenchement 6.4, c'est-à-dire le plan incliné ou le bord arrondie 6.4, du moyen d'armage et de déclenchement 6 et le moyen de verrouillage 7, ce qui provoque petit-à-petit un pivotement du moyen de verrouillage 7. La goupille de verrouillage 7.2 montée sur ce dernier glisse alors le long de l'encoche 4.1.4 du marteau 4.1, avant de s'en désengager.The figure 2b is a top view of the device in its position during the first phase of said actuation when, when the pressure on the push button 1 by the user continues, the means of arming and trigger 6 comes into contact with the locking means 7, therefore at the moment when the arming and triggering means 6 is not only used to arm the hammer springs 5.1, 5.2, 5.3, but where it also performs a function trigger. Indeed, during this phase, on the one hand, the first hammer 4.1 is forced stronger and stronger by its spring 5.1, which in turn is armed more and more strong by the winding pin 6.1, while remaining limited in rotation by the locking pin 7.2 mounted on the locking means 7. The springs 5.2, 5.3 of the second - 4.2 and third hammers 4.3 arm themselves simultaneously, since these hammers 4.2 4.3 can not fall down no more on their heart 3.2, 3.3 respective because the bar 8, blocked by the first hammer 4.1, remotely. On the other hand, a contact is created between the triggering portion 6.4, that is to say the inclined plane or the rounded edge 6.4, the arming and triggering means 6 and the locking means 7, which The lock pin 7.2 mounted on the latter then slides along the notch 4.1.4 of the hammer 4.1, before disengaging it.

La figure 2c est une vue de dessus du dispositif dans sa position à la fin de la première phase dudit actionnement juste avant le moment où le moyen d'armage et de déclenchement 6 provoque, par l'intermédiaire du moyen de verrouillage 7, la libération du marteau de remise à zéro avec lequel il coopère. En particulier, la figure 2c montre la position correspondant à l'armage maximale des ressorts de marteaux 5.1, 5.2, 5.3 et juste avant le déclenchement des marteaux 4.1, 4.2, 4.3, à savoir avant le moment où la goupille de verrouillage 7.2 montée sur le moyen de verrouillage 7 se désengage de l'encoche 4.1.4 du premier marteau 4.1. Le moment de déclenchement correspond au moment où la goupille de verrouillage 7.2 ne peut plus retenir le premier marteau 4.1 et glisse alors le long de ladite partie de guidage 4.1.5 du premier marteau 4.1, n'opposant plus de retenue au déplacement de ce marteau 4.1, mise à part un frottement négligeable crée par l'action du ressort de rappel du moyen de verrouillage 7 qui plaque la goupille de verrouillage 7.2 contre cette partie de guidage 4.1.5 du premier marteau 4.1.The Figure 2c is a top view of the device in its position at the end of the first phase of said actuation just before the moment when the arming and triggering means 6 causes, by means of the locking means 7, the release of the hammer from resetting with which it cooperates. In particular, Figure 2c shows the position corresponding to the maximum arming of the hammer springs 5.1, 5.2, 5.3 and just before the release of the hammers 4.1, 4.2, 4.3, namely before the moment when the locking pin 7.2 mounted on the locking means 7 is disengagement of notch 4.1.4 of the first hammer 4.1. The triggering moment corresponds to the moment when the locking pin 7.2 can no longer retain the first hammer 4.1 and then slides along said guide portion 4.1.5 of the first hammer 4.1, no longer opposing restraint to the movement of this hammer 4.1, except for negligible friction created by the action of the return spring of the locking means 7 which plates the locking pin 7.2 against this guide portion 4.1.5 of the first hammer 4.1.

La figure 2d est une vue de dessus du dispositif dans sa position lors de la deuxième phase dudit actionnement, lorsque la pression sur le bouton-poussoir 1 par l'utilisateur se poursuit, une fois que les marteaux de remise à zéro 4.1, 4.2, 4.3 se sont abattus sur les cames de remise à zéro 3.1, 3.2, 3.3 correspondantes. En effet, le premier marteau 4.1 étant libéré à la fin de la phase d'actionnement illustrée à la figure 2c, la barre de rappel 8 peut se déplacer de même, du fait qu'elle est liée au premier marteau 4.1. Comme la barre de rappel était la seule pièce qui retenait les deuxième - 4.2 et troisième marteaux 4.3, ces deux derniers se retrouvent également libérés. Au moment du déclenchement, les marteaux 5.1, 5.2, 5.3 s'abattent donc avec une force de remise à zéro bien définie, qui correspond à la force d'armage maximale des ressorts de marteaux 5.1, 5.2, 5.3 atteint dans la position illustrée à la figure 2c, sur les coeurs 3.1, 3.2, 3.3. Les ressorts de marteaux 5.1, 5.2, 5.3 ont été armés par la force de l'utilisateur. L'énergie accumulée à ce stade est suffisante pour effectuer la remise à zéro. Les ressorts 5.1, 5.2, 5.3 gardent néanmoins un armage résiduel, c'est-à-dire que les ressorts 5.1, 5.2, 5.3 sont encore partiellement armés après que les marteaux 4.1, 4.2, 4.3 se trouvent en appui sur leur coeur 3.1, 3.2, 3.3. En effet, une fois plaqués contre les coeurs, les marteaux 5.1, 5.2, 5.3 appliquent une force de maintien, qui correspond à la force d'armage résiduelle des ressorts de marteaux 5.1, 5.2, 5.3 dans la position illustrée à la figure 2d, sur ces coeurs 3.1, 3.2, 3.3. Puis, en continuant de presser le poussoir, l'utilisateur continue à armer les ressorts 5.1, 5.2, 5.3, malgré que les marteaux 4.1, 4.2, 4.3 soient déjà en appui sur leur coeur 3.1, 3.2, 3.3, de manière à maintenir la pression sur les coeurs. Pour éviter tout endommagement, la course du bouton-poussoir 1, du deuxième moyen de commande 2 ainsi que du moyen d'armage et de déclenchement 6, et donc la force de pression sur les coeurs 3.1, 3.2, 3.3, est néanmoins limitée par la butée d'armage 6.8, contre lequel l'extrémité libre 2.2 prend appui lorsque l'utilisateur a terminé sa pression sur le bouton-poussoir 1. Il est à noter par rapport à la position illustrée à la figure 2d que le mouvement des marteaux de remise à zéro 4.1, 4.2, 4.3 vers les cames de remise à zéro 3.1, 3.2, 3.3 ainsi que leur appui contre le coeur correspondant sont réalisés de manière indépendants et ne sont pas gênés par la barre de rappel 8, notamment au niveau des deuxième - 4.2 et troisième marteaux 4.3, étant donné le jeu des deuxième - 8.2 et troisième pivots 8.3 dans leur ouverture correspondante dans ladite barre de rappel 8.The figure 2d is a top view of the device in its position during the second phase of said actuation, when the pressure on the pushbutton 1 by the user continues, once the reset hammers 4.1, 4.2, 4.3 are slaughtered on the corresponding reset cams 3.1, 3.2, 3.3. Indeed, the first hammer 4.1 being released at the end of the actuation phase illustrated in FIG. Figure 2c , the return bar 8 can move the same, because it is linked to the first hammer 4.1. As the reminder bar was the only piece that retained the second - 4.2 and third 4.3 hammers, the latter two are also released. At the time of tripping, the hammers 5.1, 5.2, 5.3 thus fall down with a well defined resetting force, which corresponds to the maximum arming force of the hammer springs 5.1, 5.2, 5.3 reached in the position illustrated in FIG. the Figure 2c , on the hearts 3.1, 3.2, 3.3. The hammer springs 5.1, 5.2, 5.3 were armed by the force of the user. The energy accumulated at this stage is sufficient to perform the reset. The springs 5.1, 5.2, 5.3 still maintain a residual armature, that is to say that the springs 5.1, 5.2, 5.3 are still partially armed after the hammers 4.1, 4.2, 4.3 are supported on their core 3.1, 3.2, 3.3. Indeed, once pressed against the hearts, the hammers 5.1, 5.2, 5.3 apply a holding force, which corresponds to the residual force of the hammer springs 5.1, 5.2, 5.3 in the position illustrated in FIG. figure 2d , on these hearts 3.1, 3.2, 3.3. Then, continuing to press the pusher, the user continues to arm the springs 5.1, 5.2, 5.3, although the hammers 4.1, 4.2, 4.3 are already resting on their core 3.1, 3.2, 3.3, so as to maintain the pressure on the hearts. To prevent damage, the stroke of the push button 1, the second control means 2 and the means of arming and triggering 6, and therefore the pressure force on the hearts 3.1, 3.2, 3.3 is nevertheless limited by the armature stop 6.8, against which the free end 2.2 is supported when the user has finished pressing the pushbutton 1. It is at note with respect to the position illustrated in the figure 2d that the movement of the reset hammers 4.1, 4.2, 4.3 towards the reset cams 3.1, 3.2, 3.3 as well as their support against the corresponding core are made independently and are not impeded by the return bar 8 , especially at the level of the second - 4.2 and third hammers 4.3, given the clearance of the second - 8.2 and third pivots 8.3 in their corresponding opening in said return bar 8.

La figure 2e est une vue de dessus du dispositif dans sa position une fois que le premier moyen de commande a été relâché par l'utilisateur, de sorte que les marteaux de remise à zéro 4.1, 4.2, 4.3 ainsi que le moyen de verrouillage 7 sont revenus à leurs positions de repos. En effet, lorsque l'utilisateur relâche le bouton-poussoir 1, le ressort de rappel de commande repousse le deuxième moyen de commande 2 ainsi que le moyen d'armage et de déclenchement 6 dans la position de repos illustrée à la figure 1b. Dans cette phase de rappel, l'extrémité libre 2.2 du deuxième moyen de commande 2 vient buter contre le premier marteau 4.1. A partir de ce moment, les trois marteaux 4.1, 4.2, 4.3 sont éloignés des coeurs 3.1, 3.2, 3.3, par l'intermédiaire du deuxième moyen de commande 2, respectivement de la barre de rappel 8. Pendant que le moyen d'armage et de déclenchement 6 ainsi que les marteaux 4.1, 4.2, 4.3 reviennent dans leurs positions de repos, les ressorts des marteaux 5.1, 5.2, 5.3 se désarment. Simultanément, la goupille de verrouillage 7.2 glisse sur la partie de guidage 4.1.5 du premier marteau 4.1, jusqu'à ce qu'elle s'engage dans l'encoche 4.1.4 du premier marteau 4.1, grâce à l'action du ressort de rappel de verrouillage qui appuit le moyen de verrouillage 7 contre la butée de verrouillage 7.3. Dès lors, le dispositif se trouve de nouveau dans sa position de repos et est prêt pour une nouvelle utilisation.The figure 2e is a top view of the device in its position once the first control means has been released by the user, so that the reset hammers 4.1, 4.2, 4.3 and the locking means 7 have returned to their resting positions. Indeed, when the user releases the push button 1, the control return spring pushes the second control means 2 and the arming and triggering means 6 in the rest position illustrated in FIG. figure 1b . In this return phase, the free end 2.2 of the second control means 2 abuts against the first hammer 4.1. From this moment, the three hammers 4.1, 4.2, 4.3 are removed from the cores 3.1, 3.2, 3.3, via the second control means 2, respectively of the return bar 8. While the winding means and release 6 as well as the hammers 4.1, 4.2, 4.3 return to their rest positions, the springs of hammers 5.1, 5.2, 5.3 disarm. Simultaneously, the locking pin 7.2 slides on the guide portion 4.1.5 of the first hammer 4.1, until it engages in the notch 4.1.4 of the first hammer 4.1, thanks to the action of the spring locking reminder that presses the locking means 7 against the locking abutment 7.3. Therefore, the device is again in its rest position and is ready for a new use.

Une deuxième forme d'exécution d'un dispositif de remise à zéro selon la présente invention est illustrée schématiquement et à titre d'exemple aux figure 3a à 3c. Si les autres éléments de ce dispositif, mis à part de disposer d'une forme ou d'un emplacement différent sans que cela produise une différence substantielle, sont identiques par rapport au dispositif selon la première forme d'exécution, le moyen de rappel 8 est réalisé, dans la deuxième forme d'exécution du dispositif, par un bras supplémentaire 4.1.2, 4.2.2, 4.3.2 situé sur au moins un des marteaux de remise à zéro 4.1, 4.2, 4.3. Ces bras supplémentaires 4.1.2, 4.2.2, 4.3.2 remplacent donc la barre de rappel 8 prévue dans la première forme d'exécution et garantissent une indépendance encore améliorée entre les marteaux de remise à zéro 4.1, 4.2, 4.3, étant donné qu'il n'y a dans ce cas plus aucune liaison cinématique direct, même plus au niveau d'un frottement négligeable comme dans la première forme d'exécution, entre les marteaux 4.1, 4.2, 4.3 lors de la phase de fonctionnement du dispositif pendant laquelle ils sont en mouvement vers, respectivement appliqués contre les cames 3.1, 3.2, 3.3.A second embodiment of a resetting device according to the present invention is illustrated schematically and by way of example to Figure 3a to 3c . If the other elements of this device, apart from having a different shape or location without producing a substantial difference, are identical with respect to the device according to the first embodiment, the return means 8 is realized, in the second embodiment of the device, by an additional arm 4.1.2, 4.2.2, 4.3.2 located on at least one of the reset hammers 4.1, 4.2, 4.3. These additional arms 4.1.2, 4.2.2, 4.3.2 therefore replace the return bar 8 provided in the first embodiment and guarantee an even better independence between the reset hammers 4.1, 4.2, 4.3, given that there is in this case no more direct kinematic connection, even more at a negligible friction as in the first embodiment, between the hammers 4.1, 4.2, 4.3 during the operating phase of the device during which they are moving towards, respectively applied against the cams 3.1, 3.2, 3.3.

Par ailleurs, les figures 3a à 3c soulignent également que le dispositif selon cette deuxième forme d'exécution peut, de manière avantageuse, être équipé avec des marteaux de remise à zéro 4.1, 4.2, 4.3 qui ont tous la même géométrie, de sorte à ce qu'il ont un poids et un moment d'inertie identique. Cela permet d'améliorer encore la précision du moment à laquelle les marteaux frappent sur leur coeur respectif, étant donné que, mis à part les tolérances de fabrication, il devraient dans ce cas de figure tous montrer le même comportement.Moreover, Figures 3a to 3c also underline that the device according to this second embodiment can advantageously be equipped with reset hammers 4.1, 4.2, 4.3 which all have the same geometry, so that they have a weight and a moment of identical inertia. This further improves the accuracy of the moment at which the hammers strike on their respective heart, since, apart from the manufacturing tolerances, it should in this case all show the same behavior.

On note également aux figures 3a à 3c que les ressorts de marteau 5.1, 5.2, 5.3 de la deuxième forme d'exécution du dispositif sont réalisés, de préférence, par des ressorts plats à deux bras élastiques dont le premier bras sert pour recevoir une force d'armage par l'intermédiaire du moyen d'armage et de déclenchement 6, de manière similaire à l'extrémité libre des ressorts plats de la première forme d'exécution du dispositif, et dont le deuxième bras sert à transmettre la force d'armage, une fois que les ressorts sont armés, au marteau de remise à zéro 4.1, 4.2, 4.3 correspondant. La base de ces ressorts de marteau 5.1, 5.2, 5.3, située entre les deux bras élastiques, est montée sur les marteaux de remise à zéro 4.1, 4.2, 4.3, de préférence concentriquement par rapport à l'axe de pivotement 4.1.1, 4.2.1, 4.3.1 correspondant.We also note to Figures 3a to 3c that the hammer springs 5.1, 5.2, 5.3 of the second embodiment of the device are preferably made by flat springs with two elastic arms whose first arm serves to receive a reinforcing force through the means of arming and trigger 6, similarly to the free end of the flat springs of the first embodiment of the device, and the second arm is used to transmit the winding force, once the springs are armed, the hammer to zero corresponding 4.1, 4.2, 4.3. The base of these hammer springs 5.1, 5.2, 5.3, located between the two elastic arms, is mounted on the reset hammers 4.1, 4.2, 4.3, preferably concentrically with respect to the pivot axis 4.1.1, 4.2.1, 4.3.1 corresponding.

Le fonctionnement du dispositif de remise à zéro selon la deuxième forme d'exécution est entièrement analogique à ce qui a été expliqué par rapport aux figures 2a à 2e illustrant le fonctionnement du dispositif de remise à zéro selon la première forme d'exécution, mis à part le fait que c'est les bras supplémentaires 4.1.2, 4.2.2, 4.3.2 des marteaux de remise à zéro 4.1, 4.2, 4.3 au lieu de la barre de rappel 8 prévue dans la première forme d'exécution qui maintient la distance entre ces trois marteaux et garantit une indépendance encore améliorée entre les marteaux de remise à zéro 4.1, 4.2, 4.3 lors de la phase de leur frappe contre le coeur 3.1, 3.2, 3.3 correspondant. Les figures 4a à 4e correspondent aux figures 2a à 2e et montrent, à la figure 4a, une vue de dessus de la deuxième forme d'exécution du dispositif dans sa position juste après le début de la première phase de l'actionnement du premier moyen de commande 1, à la figure 4b, une vue de dessus de ce dispositif dans sa position lors de la première phase dudit actionnement au moment où le moyen d'armage et de déclenchement 6 entre en contact avec le moyen de verrouillage 7, à la figure 4c, une vue de dessus du dispositif dans sa position à la fin de la première phase dudit actionnement juste avant le moment où le moyen d'armage et de déclenchement 6 provoque la libération des marteaux de remise à zéro en poussant le moyen de verrouillage 7 de sorte que ce dernier libère le marteaux de remise à zéro 4.1 avec lequel il coopère, à la figure 4d, une vue de dessus du dispositif dans sa position lors de la deuxième phase dudit actionnement une fois que les marteaux de remise à zéro 4.1, 4.2, 4.3 se sont abattus sur les cames de remise à zéro 3.1, 3.2, 3.3 correspondantes, et, à la figure 4e, une vue de dessus du dispositif dans sa position une fois que le premier moyen de commande 1 a été relâché par l'utilisateur, de sorte que les marteaux de remise à zéro 4.1, 4.2, 4.3 ainsi que le moyen de verrouillage 7 sont revenus à leurs positions de repos, de sorte que le dispositif est prêt de nouveau pour son utilisation.The operation of the resetting device according to the second embodiment is entirely analog to that which has been explained with respect to FIGS. 2a to 2e illustrating the operation of the resetting device according to the first embodiment, except that it is the additional arms 4.1.2, 4.2.2, 4.3.2 of the reset hammers 4.1, 4.2, 4.3 instead of the return bar 8 provided in the first embodiment which maintains the distance between these three hammers and guarantees an even greater independence between the reset hammers 4.1, 4.2, 4.3 during the phase of their striking. against the corresponding heart 3.1, 3.2, 3.3. The Figures 4a to 4e correspond to FIGS. 2a to 2e and show, at the figure 4a a view from above of the second embodiment of the device in its position just after the beginning of the first phase of the actuation of the first control means 1, to the figure 4b a view from above of this device in its position during the first phase of said actuation at the moment when the arming and triggering means 6 comes into contact with the locking means 7, at the figure 4c a view from above of the device in its position at the end of the first phase of said actuation just before the moment when the arming and triggering means 6 causes the release of the reset hammers by pushing the locking means 7 of so that the latter releases the reset hammers 4.1 with which it cooperates, at the figure 4d a top view of the device in its position during the second phase of said actuation once the reset hammers 4.1, 4.2, 4.3 fell on the corresponding reset cams 3.1, 3.2, 3.3, and, at the figure 4e a view from above of the device in its position once the first control means 1 has been released by the user, so that the reset hammers 4.1, 4.2, 4.3 and the locking means 7 have returned at their rest positions, so that the device is ready for use again.

Vu l'agencement et le fonctionnement du dispositif décrit ci-dessus, on comprend que la remise à zéro s'effectue uniquement si la force manuelle appliquée par l'utilisateur de la pièce d'horlogerie sur le premier moyen de commande 1 dépasse une valeur de seuil prédéfinie qui correspond normalement à la somme des forces d'armage des ressorts de marteau 5.1, 5.2, 5.3 et du ressort de rappel de commande. De plus, la force de remise à zéro appliquée par les marteaux sur les cames est toujours identique et correspond à une valeur prédéfinie, à savoir la force d'armage maximale mentionnée ci-haut des ressorts de marteau 5.1, 5.2, 5.3, ces facteurs permettant de garantir une sécurité élevée dans le fonctionnement du dispositif. Ces avantages sont obtenus tout en garantissant une indépendance maximale aux marteaux qui n'ont pas de lien cinématique direct entre eux, tout au moins pas lors de leur application sur les cames, ce qui améliore la précision au niveau de l'actionnement simultané des marteaux. La deuxième forme d'exécution est particulièrement avantageuse à cet égard, étant donné qu'elle ne prévoit aucun lien cinématique direct qui pourrait se manifester entre les marteaux lors de leur phase de frappe. De plus, une géométrie identique de tous les marteaux telle que prévue également dans la deuxième forme d'exécution du dispositif ne fait que de renforcer ces avantages. Par ailleurs, la construction est robuste et aussi peu encombrant que possible ainsi que simple et fiable lors de l'utilisation. Le dispositif de remise à zéro selon la présente invention peut être intégré dans toute sorte de pièces d'horlogerie, de préférence dans des montres bracelet mécaniques, notamment dans des montre chronographes ou à rattrapante. Il est pourtant aussi possible de l'utiliser dans des montres électroniques.In view of the arrangement and operation of the device described above, it will be understood that the reset only takes place if the manual force applied by the user of the timepiece to the first control means 1 exceeds a value predefined threshold which normally corresponds to the sum of the arming forces of the hammer springs 5.1, 5.2, 5.3 and the control return spring. In addition, the reset force applied by the hammers on the cams is always identical and corresponds to a predefined value, namely the maximum arming force mentioned above of the hammer springs 5.1, 5.2, 5.3, these factors. to guarantee a high security in the operation of the device. These advantages are achieved while ensuring maximum independence for hammers that do not have a direct kinematic link between them, at least not when applied to the cams, which improves the accuracy in the simultaneous actuation of the hammers. . The second embodiment is particularly advantageous in this regard, since it provides no direct kinematic link that could occur between the hammers during their strike phase. In addition, identical geometry of all the hammers as also provided in the second embodiment of the device only reinforces these advantages. Moreover, the construction is robust and as compact as possible as well as simple and reliable during use. The resetting device according to the present invention can be integrated into all kinds of timepieces, preferably in mechanical wristwatches, especially in watches. chronographs or splitters. It is also possible to use it in electronic watches.

Claims (15)

  1. A zero-reset device for a timepiece, in particular for a chronograph watch, 5the device comprising a first control means (1), a second control means (2) connected kinematically to said first control means (1), at least two zero-reset cams (3.1, 3.2, 3.3), at least two corresponding zero-reset hammers (4.1, 4.2, 4.3) being pivoted independently of one another and adapted to be actuated so as to cooperate with a corresponding zero-reset cam (3.1, 3.2, 3.3), the device also comprising at least two hammer springs (5.1, 5.2, 5.3), each of which is adapted to exert a pre-tension force causing a zero-reset hammer (4.1, 4.2, 4.3) to pivot in the direction of the corresponding zero-reset cam (3.1, 3.2, 3.3), characterized in that the device comprises a winding and release means (6) as well as a locking means (7), said winding and release means (6) being adapted to wind said hammer springs (5.1, 5.2, 5.3) during a first phase of an actuation of the first control means (1) as well as to cooperate, during a second phase of the actuation of the first control means (1), with said locking means (7), such that said locking means (7) passes from a first, rest position, in which the locking means (7) holds the zero-reset hammers (4.1, 4.2, 4.3) in the rest positions thereof, to a second, 20release position, in which the locking means (7) releases the zero-reset hammers (4.1, 4.2, 4.3), which come, in each case under the action of the corresponding hammer spring (5.1, 5.2, 5.3), into the positions thereof of cooperation with the corresponding zero-reset cam (3.1, 3.2, 3.3).
  2. The device according to the preceding claim, characterised in that said winding and release means (6) is kinematically connected to the second control means (2) and is formed by a bar comprising at least two winding elements (6.1, 6.2, 6.3), each of which is adapted to bear against a corresponding hammer spring (5.1, 5.2, 5.3), so as to be able to wind said hammer spring (5.1, 5.2, 5.3) during said first phase of the actuation of the first control means (1).
  3. The device according to the preceding claim, characterised in that said 5winding elements are formed by pins (6.1, 6.2, 6.3).
  4. The device according to one of the preceding claims, characterised in that said winding and release means (6) comprises a release part (6.4) adapted to cooperate with the locking means (7), such that said locking means passes, during said second phase of the actuation of the first control means (1), from the first, rest position thereof, in which the locking means (7) holds the zero-reset hammers (4.1, 4.2, 4.3) in the rest positions thereof, to the second, release position thereof, in which the locking means (7) releases the zero-reset hammers (4.1, 4.2, 4.3).
  5. The device according to the preceding claim, characterised in that said release part (6.4) is formed by an inclined plane or a rounded edge able to come into contact with said locking means (7).
  6. The device according to one of preceding claims 2 to 5, characterised in 20that said winding and release means (6) is displaceable, following an actuation of the first control means (1), in rotation of large radius about a guide shaft (6.6) fitted in a longitudinal groove (6.5) in said winding and release means (6), said kinematic connection between the winding and release means (6) and the second control means (2) being formed by a pivot pin (6.7). 25
  7. The device according to one of the preceding claims, characterised in that said locking means (7) is formed by a locking lever mounted pivotably and pretensioned against one of the zero-reset hammers (4.1, 4.2, 4.3), the latter comprising a notch (4.1.4) with/from which a locking part (7.2) of said locking means (7) can be engaged, respectively disengaged.
  8. The device according to the preceding claim, characterised in that said locking part (7.2) is formed by a pin or by a part having a shape adapted for engagement with said notch (4.1.4) in one of the zero-reset hammers (4.1, 4.2, 4.3).
  9. The device according to one of the preceding claims, characterised in that the device comprises a return means (8) of the zero-reset hammers (4.1, 4.2, 4.3) adapted to return the zero-reset hammers (4.1, 4.2, 4.3) into the rest position thereof following actuation thereof.
  10. The device according to the preceding claim, characterised in that said 15return means (8) of the zero-reset hammers is formed by a supplementary arm (4.1.2, 4.2.2, 4.3.2) arranged on at least one of the zero-reset hammers (4.1, 4.2, 4.3).
  11. The device according to preceding claim 9, characterised in that said 20return means (8) of the zero-reset hammers is formed by a return bar connected kinematically to each of the zero-reset hammers (4.1, 4.2, 4.3), said connection being formed without play with the zero-reset hammer (4.1) that cooperates with the locking means (7) and with play for the other zero-reset hammers (4.2, 4.3).
  12. The device according to one of the preceding claims, characterised in that said zero-reset hammers (4.1, 4.2, 4.3) all have the same geometry.
  13. The device according to one of the preceding claims characterised in that said first control means (1) is movable in translation and said second control means (2) is movable in rotation.
  14. The device according to one of the preceding claims, characterised in that said first control means (1) is a push-button.
  15. A timepiece, preferably a mechanical wristwatch, characterised in that it comprises a chronograph mechanism or a fly-back hand mechanism equipped with a zero-reset device according to one of the preceding claims.
EP14195738.1A 2013-12-16 2014-12-01 Zero-reset device with independent hammers Active EP2884350B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH02080/13A CH708999A1 (en) 2013-12-16 2013-12-16 Device reset with independent hammers.

Publications (3)

Publication Number Publication Date
EP2884350A2 EP2884350A2 (en) 2015-06-17
EP2884350A3 EP2884350A3 (en) 2016-05-25
EP2884350B1 true EP2884350B1 (en) 2017-02-15

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EP14195738.1A Active EP2884350B1 (en) 2013-12-16 2014-12-01 Zero-reset device with independent hammers

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US (1) US9164492B2 (en)
EP (1) EP2884350B1 (en)
JP (1) JP6469419B2 (en)
CN (1) CN104714402B (en)
CH (1) CH708999A1 (en)
ES (1) ES2623165T3 (en)

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CH713604A1 (en) * 2017-03-22 2018-09-28 Sa De La Manufacture Dhorlogerie Audemars Piguet & Cie Selection and actuation mechanism as well as a device for adjusting the functions of a timepiece.
DE202017107668U1 (en) * 2017-12-18 2018-01-19 Uwe Heinz Zeroing device for minute hand of a chronograph and chronograph
EP3876042B1 (en) * 2020-03-05 2023-12-06 Montres Breguet S.A. System for resetting a chronograph
CH718458A9 (en) * 2021-03-18 2022-11-30 Mft Dhorlogerie Audemars Piguet Sa Actuation mechanism for a watch movement, in particular a chronograph mechanism comprising such an actuation mechanism.
EP4372489A1 (en) 2022-11-15 2024-05-22 Damasko Präzisionstechnik GmbH & Co. KG Spring loaded zero reset mechanism

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Also Published As

Publication number Publication date
CH708999A1 (en) 2015-06-30
CN104714402A (en) 2015-06-17
JP2015118082A (en) 2015-06-25
EP2884350A2 (en) 2015-06-17
US20150168919A1 (en) 2015-06-18
EP2884350A3 (en) 2016-05-25
CN104714402B (en) 2018-06-08
ES2623165T3 (en) 2017-07-10
US9164492B2 (en) 2015-10-20
JP6469419B2 (en) 2019-02-13

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