Timepiece mechanism comprising a rotating regulating system and timepiece comprising such a mechanism

Abstract

In particular, a clockwork mechanism (10T) is described comprising a rotating regulating system (SR) kinematically linked to a finishing train (RF), the rotating regulating system (SR) including a rotating cage (CR) carrying an escapement (EC) and a regulating member (BL), the rotating regulating system (SR) being capable of operating according to a first operating mode where the rotating cage (CR) is driven in rotation and at least according to a second operating mode where the rotating cage (CR) is immobilized while ensuring continuity of operation of the escapement (EC) and the regulating member (BL). The finishing train (RF) is kinematically linked to the rotating regulating system (SR) via a drive device (100) switchable between a first configuration and at least a second configuration.In the first configuration of the drive device (100), the rotating regulating system (SR) is operated according to the first operating mode and the going train (RF) is kinematically linked to the rotating cage (CR) via the drive device (100). In the second configuration of the drive device (100), the rotating regulating system (SR) is operated according to the second operating mode and the going train (RF) is disengaged from the rotating cage (CR), allowing the rotating cage (CR) to be immobilized, the going train (RF) remaining kinematically linked to the escapement (EC).

Description

DOMAINE TECHNIQUE

[0001] The present invention relates generally to the field of watchmaking and more particularly concerns a watch mechanism comprising a rotating regulating system, in particular of the tourbillon or carousel type, which watch mechanism is in particular intended to equip a timepiece, such as a wristwatch. ARRIÈRE-PLAN TECHNOLOGIQUE

[0002] Watch mechanisms comprising one or more rotating regulating systems are well known in the state of the art. In particular, a distinction is made between (i) “tourbillons” which are characterized by the presence of a fixed wheel (usually called a fixed seconds wheel) with which the escapement pinion meshes, which is carried, with the regulating organ, on the rotating cage of the tourbillon which is itself connected to the barrel through a single gear train, and (ii) “carousels” which are characterized in particular by the fact that the seconds wheel (also sometimes called a “false seconds wheel”) is not fixed, but is part of a drive wheel kinematically linked to the escapement which is carried, with the regulating organ, by the rotating cage of the carousel. In the case of a carousel, the regulating system is linked to the barrel through two gear trains.The first train provides the energy needed to operate the escapement, while the second train drives the rotating carousel cage.

[0003] In the case of a classic tourbillon, any forced stoppage of the rotation of the rotating cage leads to the stopping of the escapement, which is no longer able to fulfill its function. In fact, in a tourbillon, the rotating cage itself is an integral part of the train transmitting energy to the regulating organ. In the case of a classic carousel, on the other hand, it is possible to disengage the second train normally driving the rotating cage of the carousel in rotation and to immobilize the rotating cage without causing the escapement to stop, but this necessarily affects the rate of the movement, which is no longer punctuated by the escapement to drive the time-indicating organs at the required frequency. The escapement continues to function, but the time-indicating organs are no longer driven at the required speed.Indeed, for a carousel to duly fulfill its function as a regulating system, one must take into account both the speed of rotation of the rotating cage, but also the speed of rotation of the drive wheel which is kinematically linked to the escapement, the rotating regulating system being able in this case to be assimilated to a differential where the escapement wheel acts as a satellite, so to speak.

[0004] Swiss Patent No. CH 7965 A and its American counterpart No. US 549,287 A, in the name of Bahne Bonniksen, the contents of which are incorporated herein by reference in their entirety, constitute the first documented trace of a rotating regulating system of the carousel type. The particularity of the carousel described in these publications lies in the fact that the rotating cage completes a complete revolution in 52.5 minutes, while the drive wheel kinematically linked to the escapement and driven by the going train completes a complete revolution in 1 minute, this drive wheel can therefore effectively be assimilated to a seconds wheel. In this respect, the balance is modified so that its frequency is reduced by approximately 2% to take into account the differential in rotation speed between the rotating cage and the seconds wheel, leading to the need to use a specific balance.Modified versions of this carousel have been explored in the state of the art (see in particular "Comparative study between the Breguet tourbillon and the carousel of the Danish Bonniksen", P. Augereau, 6th European Congress of Chronometry (CEC), Bienne, October 17-18, 1996, Session J, Historical Watchmaking, Communication 37, pages 179-182).

[0005] European Patent No. EP 1 995 650 B1, the contents of which are incorporated herein by reference in their entirety, describes a watch movement comprising a carousel whose particularity lies in the fact that the rotating cage makes one complete revolution per minute, while the drive wheel set (or "false seconds wheel set") kinematically linked to the escapement is driven by the going train at a different rotational speed. In the exemplary embodiment described in this European patent, the false seconds wheel set is rotated in the same direction as the rotating cage at a rotational speed twice as high, namely at a rate of two revolutions per minute. It can therefore be deduced that, in this example, the rotational speed of the false seconds wheel set relative to the rotating cage is one revolution per minute.A consequence of the above is therefore that the escapement and the regulating organ can operate at the same frequency as in a conventional watch movement. It is thus possible to avoid the need to adapt the frequency of the regulating organ. This watch movement is notably used in the Blancpain Carrousel Volant Une Minute. Assuming that the drive of the rotating cage of the carousel is disengaged and that this rotating cage is immobilized, the escapement can still operate, but then no longer sets the pace of the movement at the frequency required to ensure the driving of the time-indicating organs at the required speed.

[0006] European Patent No. EP 3 193 216 B1, the content of which is incorporated herein by reference in its entirety, describes a clockwork mechanism with a rotating regulating system, the particularity of which lies in the fact that the rotating regulating system is capable of operating in a first operating mode where the rotating cage of the rotating regulating system is driven in rotation and in a second operating mode where the rotating cage is immobilized while ensuring continuity of operation of the escapement and the regulating organ. European Patent No. EP 3 193 216 B1 describes more specifically a solution based on the use of two gear trains driven alternately, in this case a first finishing train kinematically linked to the rotating cage and a second finishing train kinematically linked to a drive wheel set which is arranged to directly or indirectly drive the escapement.Furthermore, a selection device is provided in order to select between at least a first operating mode where the first gear train is driven and the second gear train is stopped (causing the rotation of the rotating cage and the immobilization of the drive wheel set, allowing the rotating regulating system to operate like a conventional tourbillon) and a second operating mode where the second gear train is driven and the first gear train is stopped (causing the immobilization of the rotating cage and the rotation of the drive wheel set, allowing the regulating system to operate like a conventional escapement system). In the embodiment illustrated in European Patent No. EP 3 193 216 B1, the drive wheel set forms an outer ring of a three-ring double bearing, the inner ring of which is integral with the rotating cage and a second pinion kinematically linked to the first going train.The intermediate ring of the bearing is fixed to the movement plate. The outer ring acting as the drive wheel has two external teeth, one of which meshes with the escapement pinion and the other is kinematically linked to the second going train. In the first operating mode, the outer ring of the bearing is immobilized by the stop of the second going train and thus acts as a fixed seconds wheel of the tourbillon, with which the escapement pinion meshes. In the second operating mode, the rotating cage is immobilized by the stop of the first going train and the outer ring of the bearing is rotated by the second going train, thus acting as a seconds wheel driving the escapement pinion, as in a conventional escapement movement.

[0007] In the embodiment illustrated in European Patent No. EP 3 193 216 B1, a stopping device is further provided in order to selectively stop the first or second finishing train, this stopping device comprising a stopping lever pivoted at a point and controlled by means of a column wheel, itself controlled by a push button. The stopping lever can occupy two angular positions. In a first of these angular positions, the end of a blade of the stopping lever is engaged in the teeth of a first star secured to the first finishing train, thus making it possible to immobilize the entire first train, the second finishing train being free to rotate.In the second of the angular positions of the stop lever, a beak of the stop lever is engaged in the teeth of a second star secured to the second finishing gear, thus making it possible to immobilize the entirety of this second gear, the first finishing gear being free to rotate.

[0008] The solution described in European patent No. EP 3 193 216 B1 is particularly complex to implement in that it relies de facto on the use of two separate going trains, which requires opting for the use of a differential connecting the two going trains in order to drive the mobiles carrying the hour and minute hands. Although it is envisaged to potentially use the same barrel as a power source, two barrels are however envisaged in practice, one to provide the energy necessary for the first going train and the other to provide the energy necessary for the second going train. This therefore results in increased bulk which does not provide any advantage, quite the contrary, since two complete going trains are required and each barrel must be sized to ensure the desired power reserve.Furthermore, although mentioned as another possible application, the solution described is not directly transposable to the architecture of a carousel in the sense that, in the case of a carousel, the drive mobile must be driven in rotation in both operating modes and therefore cannot be immobilized.

[0009] The solution described in European patent No. EP 3 193 216 B1 is therefore unrealistic from a practical point of view, which probably explains why it has not, to date, been implemented in any timepiece placed on the market.

[0010] There is therefore a real need to propose a solution that overcomes the limitations and disadvantages of the state of the art. EXPOSÉ DE L'INVENTION

[0011] A general aim of the present invention is to remedy the various problems and limitations of the solutions mentioned in the preamble and of other similar solutions forming part of the state of the art.

[0012] More particularly, an aim of the present invention is to propose a solution making it possible in particular to selectively immobilize the rotating cage of a rotating regulating system while ensuring that the escapement and the regulating organ can still perform their timekeeping function.

[0013] An aim of the present invention is also, by this means, to propose a solution which makes it possible to selectively immobilize the rotating cage of the rotating regulating system so as to place the watch mechanism in a configuration where the regulating system is less exposed to shocks, in particular during periods of intense activity of the wearer of a timepiece incorporating such a watch mechanism, while ensuring that the watch mechanism can continue to function correctly and fulfill its function as a timepiece.

[0014] Another aim of the present invention is to propose such a solution which is applicable not only to the architecture of a tourbillon, but also to the architecture of a carousel, or even which makes it possible to combine these two architectures into a single watch mechanism.

[0015] A complementary aim of the present invention is to propose a solution which allows, if necessary, the direction of rotation of the rotating cage of the rotating regulating system to be reversed, thereby offering a great singularity compared to the rotating regulating systems of the state of the art.

[0016] Yet another aim of the present invention is to propose such a solution which does not unnecessarily increase the complexity of the clock mechanism and which remains relatively easy to implement.

[0017] The present invention meets at least part of these aims by proposing a watch mechanism according to a first aspect of the invention, the characteristics of which are listed in claim 1, namely a watch mechanism comprising a rotating regulating system kinematically linked to a finishing train, the rotating regulating system including a rotating cage carrying an escapement and a regulating member, the rotating regulating system being capable of operating according to a first operating mode where the rotating cage is driven in rotation and at least according to a second operating mode where the rotating cage is immobilized while ensuring continuity of operation of the escapement and the regulating member. According to this first aspect of the invention, the finishing train is kinematically linked to the rotating regulating system via a drive device switchable between a first configuration and at least a second configuration.In the first configuration of the drive device, the rotating regulating system is operated according to the first operating mode and the going train is kinematically linked to the rotating cage via the drive device. In the second configuration, the rotating regulating system is operated according to the second operating mode and the going train is disengaged from the rotating cage, allowing the rotating cage to be immobilized, the going train remaining kinematically linked to the escapement.

[0018] This solution is considerably simpler, more elegant and less cumbersome to implement than the solution described in European patent No. EP 3 193 216 B1 insofar as the same finishing gear train ensures both the driving of the rotating cage and the escapement, in the first mode of operation, and the driving of the escapement, rotating cage immobilized, in the second mode of operation.

[0019] According to a first variant embodiment of this first aspect of the invention (or "tourbillon variant"), the rotating regulating system is a tourbillon whose rotating cage is driven in rotation, in the first operating mode, so that an escapement pinion of the escapement is driven in rotation, with the rotating cage, around a wheel of a drive wheel set which is immobilized, in the first operating mode. Furthermore, the drive wheel set is released in rotation, in the second operating mode, and kinematically linked to the going train via the drive device which occupies the second configuration, while the rotating cage is immobilized.

[0020] Preferably, according to this tourbillon variant, the drive device comprises a lever pivotally mounted about a pivot axis coinciding with the axis of a drive wheel set in kinematic connection with the finishing gear train, which lever carries a first wheel set driven in rotation by the drive wheel set and capable of selectively ensuring the rotational drive of the rotary cage, in the first configuration of the drive device, and of interrupting the rotational drive of the rotary cage, in the second configuration of the drive device. This lever further carries a second wheel set driven in rotation by the drive wheel set and capable of selectively ensuring the rotational drive of the drive wheel set, in the second configuration of the drive device and of interrupting the rotational drive of the drive wheel set in the first configuration of the drive device.The rocker also preferably carries a mobile forming a return interposed between the drive mobile and the second mobile.

[0021] Preferably, in the latter context, the first mobile comprises a first drive wheel arranged to selectively engage, in the first configuration of the drive device, with a toothing of the rotary cage and to be disengaged from the toothing of the rotary cage, in the second configuration of the drive device. In addition, the second mobile comprises a second drive wheel arranged to selectively engage, in the second configuration of the drive device, with a toothing of the drive mobile, and to be disengaged from the toothing of the drive mobile in the first configuration of the drive device.

[0022] According to an advantageous embodiment of this tourbillon variant, the watch mechanism further comprises a stopping device configured so as to immobilize the drive wheel set, in the first operating mode, and so as to immobilize the rotating cage, in the second operating mode. Preferably, the stopping device comprises a first stopping lever capable of cooperating selectively with a first star secured to the rotating cage and a second stopping lever capable of cooperating selectively with a second star secured to the drive wheel set, thus making it possible to directly immobilize the rotating cage or the drive wheel set, depending on the operating mode.

[0023] According to a second variant embodiment of the first aspect of the invention (or "carousel variant"), the rotating regulating system is a carousel whose rotating cage is driven in rotation, in the first operating mode, so that an escapement pinion of the escapement is driven in rotation, with the rotating cage, around a wheel of a drive wheel set itself kinematically linked to the going train so as to be driven in rotation via the drive device at a first rotation speed, in the first operating mode. Furthermore, the drive wheel set is driven in rotation via the drive device at a second rotation speed, different from the first rotation speed, in the second operating mode.

[0024] Preferably, according to this carousel variant, the drive device comprises a rocker mounted to pivot about a pivot axis coinciding with the axis of a drive wheel set in kinematic connection with the finishing gear train, which rocker carries a first wheel set driven in rotation by the drive wheel set and capable of selectively ensuring the rotational drive of the rotary cage, in the first configuration of the drive device, and of interrupting the rotational drive of the rotary cage, in the second configuration of the drive device. This first wheel set also ensures the rotational drive of the drive wheel set at the first rotational speed in the first configuration of the drive device.The rocker further carries a second mobile driven in rotation by the drive mobile and capable of selectively ensuring the rotational drive of the drive mobile at the second rotation speed, in the second configuration of the drive device.

[0025] Preferably, in the latter context, the first mobile comprises a first drive wheel arranged to selectively engage, in the first configuration of the drive device, with a toothing of the rotary cage and to be disengaged from the toothing of the rotary cage, in the second configuration of the drive device. Furthermore, the first mobile further comprises a second drive wheel arranged to selectively engage, in the first configuration of the drive device, with an intermediate mobile ensuring the driving of the drive mobile and to be disengaged from the intermediate mobile, in the second configuration of the drive device.In addition, the second mobile comprises a third drive wheel arranged to selectively engage, in the second configuration of the drive device, with the intermediate mobile and to be disengaged from the intermediate mobile in the first configuration of the drive device.

[0026] The intermediate mobile can in particular be kinematically linked to the drive mobile via an intermediate wheel itself engaged with a pinion of the drive mobile.

[0027] According to an advantageous embodiment of this carousel variant, the watch mechanism further comprises a stopping device configured so as to immobilize the rotating cage, in the second operating mode. Preferably, the stopping device comprises a stopping lever capable of selectively cooperating with a star secured to the rotating cage, thus making it possible to directly immobilize the rotating cage.

[0028] According to a second aspect of the invention, there is also provided a watch mechanism whose characteristics are listed in independent claim 10, namely a watch mechanism comprising a rotating regulating system kinematically linked to a finishing train, the rotating regulating system including a rotating cage carrying an escapement and a regulating member, the rotating regulating system further comprising a drive wheel set capable of driving the escapement. According to this second aspect of the invention, the rotating regulating system is capable of operating according to a first operating mode where the rotating cage is rotated in a first direction of rotation and where the drive wheel set is immobilized.The rotating regulating system is furthermore capable of operating at least according to a second operating mode where the rotating cage is driven in rotation in a second direction of rotation, opposite to the first direction of rotation, and where the drive wheel is driven in rotation in a direction of rotation identical to the second direction of rotation at a rotation speed greater than that of the rotating cage.

[0029] The watch mechanism proposed according to this second aspect of the invention thus makes it possible to selectively reverse the direction of rotation of the rotating cage, the rotating regulating system is thus able to operate in the manner of a tourbillon, in the first operating mode, or of a carousel, in the second operating mode. In other words, this watch mechanism has the particularity and originality of combining the functions of a tourbillon and a carousel in a single watch mechanism, while offering the singularity of allowing a selective reversal of the direction of rotation of the rotating cage of the rotating regulating system, and this while guaranteeing the continuity of operation of the escapement.

[0030] According to an alternative embodiment of this second aspect of the invention (or "hybrid alternative"), the going train is kinematically linked to the rotating regulating system via a drive device switchable between a first configuration and at least one second configuration. In the first configuration of the drive device, the rotating regulating system is operated according to the first operating mode (or "tourbillon mode") and the going train is kinematically linked to the rotating cage via the drive device so that an escapement pinion of the escapement is driven in rotation, with the rotating cage, around a wheel of the drive wheel set which is immobilized.In the second configuration of the drive device, the rotating regulating system is operated according to the second operating mode (or "carousel mode") and the finishing gear is kinematically linked to the rotating cage as well as to the drive wheel via the drive device so that the escapement pinion is driven in rotation, with the rotating cage, as well as by the wheel of the drive wheel which is itself driven in rotation.

[0031] In the latter context, the drive device preferably comprises a first drive wheel arranged to selectively engage, in the first configuration of the drive device, with a toothing of the rotary cage and to be disengaged from the toothing of the rotary cage, in the second configuration of the drive device. The drive device further comprises a second drive wheel arranged to selectively engage, in the second configuration of the drive device, with the toothing of the rotary cage and to be disengaged from the toothing of the rotary cage, in the first configuration of the drive device.The drive device finally comprises a third drive wheel arranged to selectively engage, in the second configuration of the drive device, with a toothing of the drive mobile and to be disengaged from the toothing of the drive mobile, in the first configuration of the drive device.

[0032] With regard to this hybrid variant, the watch mechanism may further comprise a stopping device configured so as to immobilize the drive wheel, in the first operating mode, this stopping device preferably comprising a stopping lever capable of cooperating selectively with a star secured to the drive wheel.

[0033] In view of the various variants mentioned above, the switching of the drive device between the first and second configurations and the actuation of the stopping device are preferably controlled by a manually operable control in order to operate the rotating regulating system according to the first or second operating mode. This control may in particular be a column wheel control.

[0034] In an alternative embodiment, the control comprises a first control device controlling the switching of the drive device and a second control device controlling the actuation of the stopping device.

[0035] Preferably, the drive device is continuously driven by the finishing gear and kinematically linked to the rotating regulating system without interruption of the kinematic connection during switching of the drive device between the first and second configurations.

[0036] The invention is applicable to any timepiece, in particular a wristwatch, comprising a watch mechanism according to the invention.

[0037] Other aspects and advantages of the invention are set out in the remainder of this description. DESCRIPTION SOMMAIRE DES DESSINS

[0038] The characteristics and advantages of the present invention will appear more clearly on reading the following detailed description of embodiments of the invention, which are presented solely as non-limiting examples and are illustrated by the appended drawings where: there Figure 1A is a functional schematic view of a clockwork mechanism according to a first alternative embodiment of the first aspect of the invention, including a regulating system capable of operating as a tourbillon, the mechanism being shown from an upper side and illustrating a first mode of operation where the regulating system operates in the manner of a conventional tourbillon; Figure 1B is a functional schematic view of the clockwork mechanism of the Figure 1A represented from a lower side; the Figure 1C is a schematic perspective view of the clock mechanism of the Figures 1A And 1B ; there Figure 2A is a partial schematic view of the clockwork mechanism illustrating part of a control and a stopping device of the clockwork mechanism of the Figures 1A à 1C ; there Figure 2B is a partial schematic view of a left half of the control and stopping device of the Figure 2A illustrating the stopping device in a position where it controls the immobilization of a drive wheel of the regulating system, engaged with the escape pinion, while the rotating cage of the tourbillon is driven in rotation; Figure 3A is a functional schematic view of the clock mechanism of the Figures 1A-C And 2A-B , shown from an upper side and illustrating a second mode of operation where the regulating system operates in the manner of a conventional escapement; the Figure 3B is a functional schematic view of the clockwork mechanism of the Figure 3A represented from a lower side; the Figure 4 is a partial schematic view of a right half of the control and stopping device of the Figure 2A illustrating the stopping device in a position where it controls the immobilization of the rotating cage of the tourbillon, while the drive wheel of the regulating system, engaged with the escape pinion, is driven in rotation; Figure 5 is a schematic perspective view of a cross-section of the rotating regulating system of the Figures 1A-C à 4 , passing through the rotation axis of the rotating regulating system and the pivot axis of a lever of a switchable drive device of the clockwork mechanism; Figure 6A is a perspective view of the switchable drive device, illustrated in isolation, equipping the clockwork mechanism of the Figures 1A-C à 5 ; there Figure 6B is an exploded perspective view of the switchable drive device of the Figure 6A ; there Figure 7A is a functional schematic view of a clockwork mechanism according to a second alternative embodiment of the first aspect of the invention, including a rotating regulating system capable of operating as a carousel, the mechanism being shown from an upper side and illustrating a first mode of operation where the regulating system operates in the manner of a conventional carousel; Figure 7B is a functional schematic view of the clockwork mechanism of the Figure 7A represented from a lower side; the Figure 7C is a schematic perspective view of the clock mechanism of the Figures 7A And 7B ; there Figure 8A is a functional schematic view of the clock mechanism of the Figures 7A-C , shown from an upper side and illustrating a second mode of operation where the regulating system operates in the manner of a conventional escapement; the Figure 8B is a functional schematic view of the clockwork mechanism of the Figure 8A represented from a lower side; the Figure 9 is a functional schematic view of a watch mechanism according to an alternative embodiment of the second aspect of the invention, including a hybrid rotating regulating system, combining the functions of a tourbillon and a carousel, the mechanism being shown from an upper side and illustrating a first mode of operation where the regulating system operates in the manner of a tourbillon; Figure 10A is a functional schematic view of the clockwork mechanism of the Figure 9 , shown from a top side and illustrating a second mode of operation where the regulating system operates in the manner of a carousel, the rotating cage then being rotated in a direction of rotation opposite to the first mode of operation; and the Figure 10B is a functional schematic view of the clockwork mechanism of the Figure 10A represented from a lower side. MODES DE RÉALISATION DE L'INVENTION

[0039] The present invention will be described with reference to various embodiments and variants as illustrated in particular by the Figures 1A-C à 10A-B .

[0040] THE Figures 1A-C à 6A-B illustrate a first variant embodiment of a watch mechanism according to the first aspect of the invention, designated overall by the reference sign 10T, comprising a rotating regulating system SR capable of operating as a tourbillon, including a rotating cage CR, or tourbillon cage, carrying an escapement EC and a regulating organ, such as a balance spring BL. Note that the balance spring of the balance spring BL has been omitted from the illustrations for the sake of simplification.The EC escapement is of a conventional type comprising an escape wheel including an escape pinion PEC and an escape wheel REC cooperating conventionally with an anchor (not shown) which is actuated by the oscillating movement of the balance shaft BL. The illustrations are essentially schematic and functional in that they illustrate the function of the various components without necessarily being representative of their arrangement in practice which may vary depending on the actual positioning of the various components in a watch movement.

[0041] The rotating regulating system SR is kinematically linked to a finishing train RF conventionally driven by at least one barrel BR, which are represented schematically in the Figures 1A à 1C . According to this first embodiment variant, the rotating regulating system SR is capable of operating according to a first operating mode (or “tourbillon mode”), illustrated by the Figures 1A-C And 2A-B , where the rotating cage CR is driven in rotation and according to a second operating mode (or “classic escapement mode”), illustrated by the Figures 3A-B And 4, where the rotating cage CR is immobilized while ensuring continuity of operation of the escapement EC and the regulating member BL. More precisely, the going train RF is kinematically linked to the rotating regulating system SR via a drive device 100 switchable between a first configuration and at least one second configuration. In the first configuration of the drive device 100, the rotating regulating system SR is operated according to the first operating mode (namely in the manner of a conventional tourbillon) and the going train RF is kinematically linked to the rotating cage CR (and therefore also to the escapement EC) via the drive device 100, thus driving the rotating cage CR in rotation about its axis of rotation AR.In the second configuration of the drive device 100, the rotating regulating system SR is operated according to the second operating mode (in the manner of a conventional escapement) and the going train RF is disengaged from the rotating cage CR, allowing the latter to be immobilized, the going train RF remaining kinematically linked to the escapement EC.

[0042] More specifically, according to this first embodiment, the rotating cage CR is driven in rotation, in the first operating mode, so that the escape pinion PEC is driven in rotation, with the rotating cage CR, around a wheel RE of a drive wheel ME, arranged coaxially with the rotating cage CR, which is immobilized, in the first operating mode. In the second operating mode, this drive wheel ME is released in rotation and kinematically linked to the finishing gear RF via the drive device 100 which occupies the second configuration, while the rotating cage CR is immobilized, the drive wheel ME then being driven in rotation around its axis of rotation AR.

[0043] As illustrated in the Figures 1A-C à 6A-B , the drive device 100 preferably comprises a lever 100B pivotally mounted about a pivot axis AP coinciding with the axis of a drive wheel set 105 (or input wheel set) of the drive device 100. This drive wheel set 105 is in permanent engagement with a wheel set RFe of the finishing gear RF, it being understood that the drive device 100 is thus in permanent kinematic connection with the finishing gear RF via the drive wheel set 105. This lever 100B carries a first wheel set 110 driven in rotation by the drive wheel set 105 and capable of selectively ensuring the rotational drive of the rotary cage CR, in the first configuration of the drive device 100, illustrated in the Figures 1A-C And 2A-B , and to interrupt the rotational drive of the rotating cage CR, in the second configuration of the drive device 100, illustrated in the Figures 3A-B And 4The rocker 100B also carries a second mobile 120 driven in rotation by the drive mobile 105 (here via a mobile forming a return 115 also carried by the rocker 100B) and capable of selectively ensuring the rotational driving of the drive mobile ME, in the second configuration of the drive device 100, illustrated in the Figures 3A-B And 4 , and to interrupt the rotational drive of the drive mobile ME, in the first configuration of the drive device 100, illustrated in the Figures 1A-C And 2A-B .

[0044] In the preferred embodiment illustrated, the first mobile 110 comprises a first drive wheel 110a (here an upper wheel) arranged to selectively engage, in the first configuration of the drive device 100, with a toothing CRa of the rotary cage CR, as illustrated schematically in the Figures 1A , 1C And 2B, and to be disengaged from the teeth CRa of the rotating cage CR, in the second configuration of the drive device 100, as schematically illustrated in the Figures 3A-B . In the illustrated example, the first mobile 110 is permanently rotated by the driving mobile 105 via the cooperation of a lower wheel 110b of the first mobile 110 and a corresponding wheel of the driving mobile 105, as illustrated in the Figures 1C , 6A And 6B .

[0045] In the preferred embodiment illustrated, the second mobile 120 comprises a second drive wheel 120b (here a lower wheel) arranged to selectively engage, in the second configuration of the drive device 100, with a toothing MEa of the drive mobile ME, as illustrated schematically in the Figures 3B And 4, and to be disengaged from the teeth MEa of the drive mobile ME, in the first configuration of the drive device 100, as schematically illustrated in the Figure 1B . In the illustrated example, the second mobile 120 is also permanently driven in rotation by the driving mobile 105 via the cooperation of an upper wheel 120a of the second mobile 120 engaged with the return mobile 115, itself engaged with the driving mobile 105, as illustrated in the Figures 1A , 1C , 3A , 6A And 6B .

[0046] It will obviously be understood that the configuration of the drive device 100 could be different, as well as the configuration of the first and second mobiles 110 and 120, while ensuring the selective drive functions of the rotary cage CR, on the one hand, and of the drive mobile ME, on the other hand. For example, the mobile forming a return 115 could perfectly well be offset between the second mobile 120 (then arranged in permanent engagement with the drive mobile 105) and the drive mobile ME so as to be in permanent engagement with the toothing MEa of this drive mobile ME, in which case the disengagement would take place between the toothing of the second mobile 120 and the toothing of the mobile forming a return.

[0047] THE Figures 6A And 6Bshow a particularly advantageous embodiment of the switchable drive device 100 where the mobiles 105, 110, 115 and 120 are each provided with a hollow shaft and a double jewel setting PRa / PRb comprising first and second stones PRa, PRb, such as rubies, in order to rotatably mount each mobile 105, 110, 115, 120 on a corresponding axis 105x, 110x, 115x, resp. 120x carried by the lever 100B. Each double jewel setting PRa-PRb is preferably produced by setting the first and second stones PRa, PRb on the two ends of the hollow shaft of each mobile 105, 110, 115 and 120. For this purpose, each of the ends of the hollow shaft can advantageously be provided with a dimensioned seat (see also the sectional view of the Figure 5 which passes through the axis of the driving mobile 105) to accommodate the associated stone PRa, resp. PRb and a peripheral lip LVa, LVb designed to ensure the setting of the associated stone PRa, resp. PRb. During assembly, this lip LVa, LVb is suitably deformed on the associated stone PRa, PRb by means, for example, of a burnisher so as to set it. In this regard, each lip LVa, LVb advantageously has a thin thickness (for example of the order of 0.01 mm at its end) facilitating its deformation and its folding towards and around each stone PRa, PRb. The hollow shaft of each mobile 105, 110, 115, 120 can be made of any material capable of allowing this setting, in particular a metal such as steel. This is a reasonably simple technique to implement and which guarantees optimal guidance of each mobile 105, 110, 115, resp. 120 on each corresponding axis 105x, 110x, 115x, resp. 120x, and allows friction to be drastically reduced.

[0048] There Figure 5 is a schematic perspective view of a cross-section of the rotating regulating system SR of the 10T watch mechanism. The cross-section is made along a vertical cutting plane passing through the rotation axis AR of the rotating cage CR (and the drive wheel set ME) and the pivot axis AP of the lever 100B of the switchable drive device 100. Figure 5 shows for illustration purposes the rotating regulating system SR in an angular position such that the axis of rotation of the escapement wheel of the EC escapement coincides with the section plane concerned for the purposes of the illustration. Figure 5 thus shows the escape wheel REC and the escape pinion PEC which meshes with the teeth of the wheel RE of the drive wheel ME. In the Figure 5 , we can also see that the rotation axis AR of the rotating cage CR coincides with the rotation axis of the balance spring BL.

[0049] In the illustration of the Figure 5 , it can also be seen that the rotating cage CR is mounted on a central pivot carried by a plate PL of the movement and guided radially by a first bearing RL1 whose outer ring is retained in a groove formed in the inner periphery of a central cylindrical support assembly carried by the plate PL. On the periphery of the rotating cage CR is formed the external toothing CRa with which selectively engages, in the first operating mode, the drive wheel 110a of the first mobile 110 of the drive device 100. A first star ETa made integral with the rotating cage CR is also visible in the Figure 5 , here in the immediate vicinity of the CRa toothing. As discussed below, this first ETa star is intended to allow the selective angular immobilization of the rotating cage CR, in the second operating mode.

[0050] The drive wheel ME is itself guided in rotation by means of a second bearing RL2 whose outer ring is retained in a groove formed in the inner periphery of an outer cylindrical support assembly also carried by the plate PL. In fact, the drive wheel ME here consists of an upper part (including the wheel RE which meshes with the escape pinion PEC) and a lower part (including the lower external toothing MEa which meshes with the drive wheel 120b of the aforementioned second wheel 120, not visible in the Figure 5 ). These upper and lower parts are made integral with each other, for example by screwing, so as to grip the inner ring of the second bearing RL2, thus ensuring the radial and axial guidance of the drive mobile ME. The drive mobile ME is thus positioned, in the example illustrated, around the central pivot of the rotating cage CR. A second star ETb made integral with the drive mobile ME is also visible in the Figure 5 , here in the immediate vicinity of the lower external toothing MEa of the drive mobile ME. As discussed below, this second star ETb, is intended to allow the selective angular immobilization of the drive mobile ME, in the first operating mode.

[0051] It should also be noted that, in the illustrated example, the upper end of the axis 105x carrying the drive mobile 105, which axis 105x defines the pivot axis AP of the rocker 100B, projects beyond the drive mobile 105 (as illustrated in the Figure 6A ) in order to form a pivot to ensure the guidance of the pivoting movement of the rocker 100B around the pivot axis AP. In this regard, this upper end of the axis 105x is here received in a stone bearing carried by a bridge, partially visible in the Figure 5 , which is made integral with the PL plate.

[0052] The immobilization of the drive mobile ME, in the first mode of operation, and of the rotating cage CR, in the second mode of operation, is ideally ensured by a stopping device DA as illustrated functionally in the Figures 1A-B And 3A-B and structurally in the Figures 2A-B And 4. Preferably, this stopping device DA comprises a first stopping lever LAa capable of selectively cooperating with the first star ETa secured to the rotating cage CR (as illustrated more specifically in the Figures 2A And 4 ) and a second stop lever LAb capable of cooperating selectively with the second star ETb secured to the drive mobile ME (as illustrated more specifically in the Figures 2A-B ).

[0053] The switching of the drive device 100 between the first and second configurations and the actuation of the stopping device DA are advantageously controlled by a control C (see Figures 1A-B à 4 ) manually operable in order to operate the rotating regulating system SR according to the first or second operating mode. In the example illustrated, it is a control C with two column wheels RCa, RCb which control the pivoting of the rocker 100B, on the one hand, and the actuation of the stop levers LAa and LAb, on the other hand, which are actuated alternately according to the position of the column wheels RCa, RCb. In this respect, two control devices DC1 and DC2 can be functionally identified, sharing the same column wheels RCa, RCb, which respectively control the position of the rocker 100B and the actuation of the stop device DA.

[0054] In the example illustrated in the Figures 2A-B And 4, the control C more particularly comprises a ratchet control lever LC actuated by a push button (not shown) which cooperates with the ratchet of the first column wheel RCa which is conventionally indexed in position by a jumper. This first column wheel RCa is also integral with a first control wheel Ra which meshes with a first intermediate wheel R1. This first intermediate wheel R1 meshes with a second intermediate wheel R2 which itself meshes with a second control wheel Rb integral with the second column wheel RCb, also indexed in position by a jumper. The angular position of the second column wheel RCb is thus linked to the angular position of the first column wheel RCa via the gear train Ra, R1, R2, Rb. More precisely, the column wheels RCa, RCb are arranged and linked so that they control the associated stop levers LAa, LAb alternately. In the illustration of the Figure 2A , the first column wheel RCa is arranged such that a beak of the first stop lever LAa rests on one of the columns of the first column wheel RCa, thereby causing the opposite end of the first stop lever LAa to be withdrawn from the teeth of the first star ETa, thereby allowing rotation of the rotating cage CR. Conversely, as illustrated in the Figures 2A-B , the second column wheel RCb occupies an angular position such that a beak of the second stop lever LAb falls into the space provided between two successive columns of the second column wheel RCb, thus causing an engagement of the opposite end of the second stop lever LAb in mesh with the teeth of the second star ETb. The drive wheel ME is therefore immobilized.

[0055] The control C further comprises a pair of intermediate control levers L1, L2 actuated, for one, by the first column wheel RCa and, for the other, by the second column wheel RCb. This pair of intermediate control levers L1, L2 actuates and controls the angular position of the lever 100B of the switchable drive device 100 via a pair of actuating pins g1, g2 carried by the lever 100B. In the example illustrated, the lever 100B also carries first and second stops b1, b2 intended to cooperate with a pair of stop pins carried by the plate PL of the movement, which are shown in the Figures 2A-B And 4 . These stop pins are thus arranged so as to limit the pivoting of the rocker 100B and define two determined angular positions of the rocker 100B, as illustrated in the Figures 2A-B , on the one hand, and in the Figure 4 , on the other hand. The terminal ends of the intermediate control levers L1, L2 cooperate selectively with the actuating pins g1, g2 so as to place the rocker 100B in one or the other of these two determined angular positions. In the illustration of the Figures 2A-B , it will be understood that the angular position occupied by the rocker 100B is such that the stop b2 is brought into contact with the associated stop pin, thus causing the clutch of the drive device 100, or more precisely of the drive wheel 110a of the first mobile 110, with the toothing CRa of the rotary cage CR, which is therefore driven in rotation. Conversely, in the illustration of the Figure 4 , it will be understood that the angular position occupied by the rocker 100B is such that the stop b1 is brought into contact with the associated stop pin, thus causing the clutch of the drive device 100, or more precisely of the drive wheel 120b of the second mobile 120, with the toothing MEa of the drive mobile ME, thus leading to the rotational driving of the drive mobile ME.

[0056] THE Figures 7A-C And 8A-B schematically and functionally illustrate a second variant embodiment of a timepiece mechanism according to the first aspect of the invention, designated overall by the reference sign 10C, comprising a rotating regulating system SR capable of operating as a carousel, including a rotating cage CR, or carousel cage, likewise carrying an escapement EC (including an escape wheel comprising an escape pinion PEC and an escape wheel REC conventionally cooperating with an anchor not shown) and a regulating member, such as a balance spring BL. Note again that the balance spring of the balance spring BL as well as the anchor of the escapement EC have been omitted from the illustrations for the sake of simplification.As already mentioned, the illustrations are essentially schematic and functional in that they illustrate the function of the various components without necessarily being representative of their arrangement in practice which may vary depending on the actual positioning of the various components in a watch movement.

[0057] The rotating regulating system SR is kinematically linked to a finishing train RF conventionally driven by at least one barrel BR, which are represented schematically in the Figures 7A-C And 8A-B . According to this second embodiment variant, the rotating regulating system SR is capable of operating according to a first operating mode (or “carousel mode”), illustrated by the Figures 7A-C , where the rotating cage CR is driven in rotation and according to a second operating mode (or “classic escapement mode”), illustrated by the Figures 8A-B, where the rotating cage CR is immobilized while ensuring continuity of operation of the escapement EC and the regulating member BL. More precisely, the going train RF is kinematically linked to the rotating regulating system SR via a drive device 200 switchable between a first configuration and at least one second configuration. In the first configuration of the drive device 200, the rotating regulating system SR is operated according to the first operating mode (namely in the manner of a conventional carousel) and the going train RF is kinematically linked to the rotating cage CR as well as to the escapement EC via the drive device 200, thus driving the rotating cage CR in rotation about its rotation axis AR.In the second configuration of the drive device 200, the rotating regulating system SR is operated according to the second operating mode (in the manner of a conventional escapement) and the going train RF is disengaged from the rotating cage CR, allowing the latter to be immobilized, the going train RF remaining kinematically linked to the escapement EC.

[0058] More specifically, according to this second embodiment, the rotating cage CR is driven in rotation, in the first operating mode, so that the escape pinion PEC is driven in rotation, with the rotating cage CR, around a wheel RE of a drive wheel set ME, arranged coaxially with the rotating cage CR, itself kinematically linked to the finishing gear RF so as to be driven in rotation via the drive device 200 at a first rotational speed, in this first operating mode. In the second operating mode, the drive wheel set ME is driven in rotation via the drive device 200 at a second rotational speed, different from the first rotational speed.

[0059] As illustrated in the Figures 7A-C And 8A-B, the drive device 200 preferably comprises a lever 200B which is pivotally mounted around a pivot axis AP coinciding here with the axis of a drive wheel set 205 (or input wheel set) of the drive device 200 which is in permanent kinematic connection with the finishing gear RF. This lever 200B carries a first wheel set 210 driven in rotation by the drive wheel set 205 and capable of selectively ensuring the rotational drive of the rotary cage CR, in the first configuration of the drive device 200, illustrated in the Figures 7A-C , and to interrupt the rotational drive of the rotating cage CR, in the second configuration of the drive device 200, illustrated in the Figures 8A-B . In the first configuration of the drive device 200, as illustrated in the Figures 7A-C, the first mobile 210 also ensures the rotational drive of the drive mobile ME at the first rotational speed. The rocker 200B also carries a second mobile 220 driven in rotation by the drive mobile 205 and capable of selectively ensuring the rotational drive of the drive mobile ME at the second rotational speed, in the second configuration of the drive device 200, illustrated in the Figures 8A-B .

[0060] In the preferred embodiment illustrated, the first mobile 210 comprises a first drive wheel 210a (here an upper wheel) arranged to selectively engage, in the first configuration of the drive device 200, with a toothing CRa of the rotary cage CR, as illustrated schematically in the Figures 7A And 7C, and to be disengaged from the teeth CRa of the rotating cage CR, in the second configuration of the drive device 200, as schematically illustrated in the Figure 8A . In the illustrated example, the first mobile 210 is permanently rotated by the driving mobile 205 via the cooperation of a lower wheel 210b of the first mobile 210 and a corresponding lower wheel of the driving mobile 205, as illustrated in the Figures 7B , 7C And 8B . This lower wheel 210b also plays the role of a second drive wheel which is arranged to selectively engage, in the first configuration of the drive device 200, with an intermediate mobile 230 ensuring the driving of the drive mobile ME, as illustrated in the Figure 7B. More specifically, the lower wheel 210b of the first mobile 210 is arranged to engage with a corresponding lower wheel 230b of the intermediate mobile 230. In the second configuration of the drive device 200, the second drive wheel 210b is disengaged from the intermediate mobile 230, as illustrated in the Figure 8B .

[0061] In the preferred embodiment illustrated, the second mobile 220 comprises a third drive wheel 220a (here an upper wheel) arranged to selectively engage, in the second configuration of the drive device 200, with the intermediate mobile 230, as illustrated in the Figures 8A-B , and to be disengaged from the intermediate mobile 230, in the first configuration of the drive device 200, as illustrated in the Figures 7A-C. More specifically, the third drive wheel 220a is arranged to engage with a corresponding upper wheel 230a of the intermediate wheel set 230. In the illustrated example, the second wheel set 220 is also continuously rotated by the drive wheel set 205 via the cooperation of the drive wheel 220a of the second wheel set 220 and a corresponding upper wheel of the drive wheel set 205, as illustrated in the Figures 7A , 7C And 8A .

[0062] In the illustrated example, the intermediate mobile 230 is kinematically linked to the drive mobile ME via an intermediate wheel 250 itself engaged with a pinion PE of the drive mobile ME, as illustrated in the Figures 7B And 8B .

[0063] It will be understood that, depending on the configuration occupied by the rocker 200B, the reduction / multiplication ratio determined by the mutual cooperation of the mobiles 205, 210, 220 and 230 will be modified accordingly, thus making it possible to impact the effective rotation speed of the drive mobile ME depending on the selected operating mode. For example, according to an illustrative, but non-limiting, embodiment, it is possible to ensure, by an appropriate choice of teeth of the mobiles concerned, that the rotary cage CR is driven in rotation, in the first operating mode, at a rate of one complete revolution per minute and that the drive mobile ME is driven in rotation at a rate of two complete revolutions per minute, similar to the operation of the carousel mentioned in European patent No. EP 1 995 650 B1 cited in the preamble.In view of this illustrative mode of implementation, taking into account the immobilization of the rotating cage CR in the second mode of operation, it is then appropriate to reduce the speed of rotation of the drive wheel ME so that it is driven at a rate of one complete revolution per minute, and thus ensure that the escapement continues to set the rhythm of the movement at the desired frequency to drive the time indicator organs at the required speed.

[0064] It will obviously be understood again that the configuration of the drive device 200 could be different, as well as the configuration of the mobiles 205, 210, 220, 230 and 250, while ensuring the functions of selective driving of the rotary cage CR, on the one hand, and the driving of the drive mobile ME at the two different rotation speeds, on the other hand.

[0065] Like the first embodiment variant, the immobilization of the rotating cage CR, in the second operating mode, can ideally be ensured by a stopping device DA as illustrated functionally in the Figures 7A-B And 8A-B . Preferably, this stopping device DA may comprise a stopping lever LA, similar to the stopping lever LAa of the first embodiment variant, capable of cooperating selectively with a star (not shown) integral with the rotating cage CR (like what was previously discussed in relation to the tourbillon variant of the Figures 1A-C to 6A-B ).

[0066] The switching of the drive device 200 between the first and second configurations and the actuation of the stop device DA can also advantageously be controlled by a control C, analogous to the control illustrated in the Figures 2A And 4(the second stop lever LAb can be omitted in this case), manually operable in order to operate the rotating regulating system SR according to the first or second operating mode. This can again be a double column wheel control RCa, RCb which control the pivoting of the rocker 200B, on the one hand, and the actuation of the stop lever LA, on the other hand. In this respect, such a control would always functionally comprise two control devices DC1 and DC2, as illustrated functionally in the Figures 7A-B And 8A-B , which respectively control the position of the rocker 200B and the actuation of the stop device DA.

[0067] THE Figures 9 to 10A-Bschematically and functionally illustrate an alternative embodiment of a timepiece mechanism according to the second aspect of the invention, designated overall by the reference sign 10TC, comprising a rotating regulating system SR including a rotating cage CR likewise carrying an escapement EC (including an escape wheel comprising an escape pinion PEC and an escape wheel REC conventionally cooperating with an anchor not shown) and a regulating member, such as a sprung balance BL. Note again that the balance spring of the sprung balance BL and the anchor of the escapement EC have been omitted from the illustrations for the sake of simplification. The rotating regulating system SR further comprises a drive wheel ME, arranged coaxially with the rotating cage CR, which is structurally analogous to the drive wheel described with reference to the alternative embodiment of the Figures 1A-C to 6A-B. As already mentioned, the illustrations are essentially schematic and functional in that they illustrate the function of the various components without necessarily being representative of their arrangement in practice which may vary depending on the actual positioning of the various components in a watch movement.

[0068] The SR rotating regulating system of the Figures 9 And 10A-B is kinematically linked to a RF finishing train conventionally driven by at least one barrel (not shown) like the embodiment variants described previously. According to this embodiment variant, the rotating regulating system SR is capable of operating according to a first operating mode (or “tourbillon mode”), illustrated by the Figure 9, where the rotating cage CR is driven in rotation around its rotation axis AR in a first direction of rotation S1 (here in a clockwise direction, seen from above) and in a second operating mode (or “carousel mode”), illustrated by the Figure 10A-B , where the rotating cage CR is rotated about its rotation axis AR in a second direction of rotation S2 opposite to the first direction of rotation S1. In the first operating mode, the drive mobile ME is immobilized, whereas in the second operating mode, the drive mobile ME is rotated in a direction of rotation S2' which is identical to the second direction of rotation S2, but at a rotation speed greater than that of the rotating cage CR.

[0069] It will thus be understood that the 10TC watch mechanism has the particularity and originality of combining the functions of a tourbillon and a carousel in a single watch mechanism, while offering the singularity of allowing a selective inversion of the direction of rotation of the rotating cage CR of the rotating regulating system SR when switching from one operating mode to another.

[0070] In the example embodiment illustrated in the Figures 9 And 10A-B , the finishing gear RF is kinematically connected to the rotating regulating system SR via a drive device 300 (shown schematically) which is switchable between a first configuration and at least one second configuration. In the first configuration of the drive device 300, illustrated in the Figure 9, the rotating regulating system SR is operated according to the first operating mode (namely in the manner of a tourbillon) and the finishing gear RF is kinematically linked to the rotating cage CR (and therefore also to the escapement EC) via the drive device 300, driving the rotating cage CR in rotation around its rotation axis AR in the first direction of rotation S1. In the second configuration of the drive device 300, illustrated in the Figure 10A-B , the rotating regulating system SR is operated according to the second operating mode (in the manner of a carousel) and the finishing gear RF is kinematically linked to the rotating cage CR as well as to the drive wheel set ME via the drive device 300, this time driving the rotating cage CR and the drive wheel set ME in rotation around their axis of rotation AR in the direction of rotation S2, resp. S2', opposite to the first direction of rotation S1.

[0071] More specifically, according to this embodiment variant, the rotating cage CR is driven in rotation, in the first operating mode, so that the escape pinion PEC is driven in rotation in the first direction of rotation S1, with the rotating cage CR, around the wheel RE of the drive wheel set ME which is immobilized in this case. In the second operating mode, the drive wheel set ME is released in rotation and kinematically linked to the finishing gear RF via the drive device 300 which occupies the second configuration, so as to be driven in rotation (as is the rotating cage CR) in a direction of rotation S2' opposite to the first direction of rotation S1 and identical to the direction of rotation S2 of the rotating cage CR.

[0072] In order to ensure the continuity of operation of the EC escapement, it is necessary to ensure that the drive wheel set ME is rotated at a rotational speed greater than that of the rotating cage CR, otherwise the EC escapement could not fulfill its function. Due to the differential in rotational speeds between the drive wheel set ME and the rotating cage CR, the escapement wheel set is always driven in the desired direction, but accompanies the movement of the rotating cage CR which is reversed compared to the first operating mode, namely in a counterclockwise movement in the example illustrated (seen from above). In fact, the drive device 300 is configured so that the EC escapement can set the rhythm of the movement at the desired frequency independently of the selected operating mode.

[0073] The drive device 300 can take any appropriate architecture and comprise, for example, at least one manually actuable rocker, carrying several mobiles kinematically linked to the finishing gear RF and arranged so as to selectively engage with the teeth CRa of the rotary cage CR and the teeth MEa of the drive mobile ME, like the variant embodiments described previously.

[0074] More specifically, in the first operating mode (“whirlwind mode”), the rotating cage CR can be driven in the first direction of rotation S1 by means of a drive wheel of the drive device 300 comprising a first drive wheel 310a capable of being selectively brought into engagement with the teeth CRa of the rotating cage CR, by switching the drive device 300 into the first configuration, as schematically illustrated in the Figure 9. In the second operating mode, this first drive wheel 310a is disengaged from the teeth CRa of the rotating cage CR, by switching the drive device 300 into the second configuration.

[0075] In the second operating mode (“carousel mode”), the rotating cage CR can be driven in the second direction of rotation S2 by means of a drive wheel of the drive device 300 comprising a second drive wheel 320a capable of being selectively brought into engagement with the teeth CRa of the rotating cage CR, by switching the drive device 300 into the second configuration, as schematically illustrated in the Figure 10A. At the same time, the drive wheel ME can be driven in the direction of rotation S2', identical to the second direction of rotation S2, by means of a drive wheel of the drive device 300 comprising a third drive wheel 330a capable of being selectively brought into engagement with the toothing MEa of the drive wheel ME, as schematically illustrated in the Figure 10B . In the first operating mode, the second and third drive wheels 320a, 330a are disengaged from the teeth CRa, resp. MEa, of the rotary cage CR, resp. of the drive mobile ME, by switching the drive device 300 into the first configuration.

[0076] The operation of the drive device 300 is essentially analogous to that of the drive device 100 or 200 previously described, except that the rotating cage CR is no longer immobilized in the second mode of operation.

[0077] By way of example, according to an illustrative, but non-limiting, embodiment, it is possible to ensure, by an appropriate choice of teeth of the mobiles concerned, that the rotating cage CR is driven in rotation, in each operating mode, at a rate of one complete revolution per minute (clockwise or counterclockwise, depending on the operating mode) and that the driving mobile ME is driven in rotation, in the second operating mode, at a rate of two complete revolutions per minute. With regard to this illustrative embodiment, it will thus be understood that the relative rotation speed of the driving mobile ME with respect to the rotating cage CR, in the second operating mode, is one revolution per minute, allowing the escapement EC to operate in the same way as in the first operating mode, although the direction of rotation of the rotating cage CR is reversed.

[0078] The immobilization of the drive mobile ME, in the first mode of operation, can ideally be ensured by a stopping device DA TC as illustrated functionally in the Figures 9 And 10A-B . Preferably, this stopping device DA TC may comprise a stopping lever LA TC , similar to the stopping lever LAb of the first embodiment variant, capable of cooperating selectively with a star (not shown) secured to the drive wheel ME (like what was previously discussed in relation to the tourbillon variant of the Figures 1A-C to 6A-B ).

[0079] The switching of the drive device 300 between the first and second configurations and the actuation of the stopping device DA TC can also advantageously be controlled by a control C, analogous to the control illustrated in the Figures 2A And 2B(the first stop lever LAa can be omitted in this case), manually operable in order to operate the rotating regulating system SR according to the first or second operating mode. It can again be a double column wheel control RCa, RCb which control the switching of the drive device 300 between its two configurations, on the one hand, and the actuation of the stop lever LA TC, on the other hand. In this respect, such a control would always functionally comprise two control devices DC1 and DC2, as illustrated functionally in the Figures 9 And 10A-B , which respectively control the switching of the drive device 300 and the actuation of the stopping device DA TC.

[0080] Particularly preferably, it will be ensured that the drive device 100, 200 respectively 300 is permanently driven by the going train RF and kinematically connected to the rotating regulating system SR without interruption of the kinematic connection during the switching of the drive device 100, 200 respectively 300 between the first and second configurations, in order to avoid any interruption of the kinematic chain between the barrel BR and the escapement EC. This can be ensured by an appropriate geometry of the mobiles concerned and their toothing so that, when switching the drive device 100, 200, respectively 300, the kinematic connection between the going train RF is always at least partially established with the rotating cage CR and / or the drive mobile ME.

[0081] Any suitable tooth geometry will also be adopted with regard to the CRa, MEa teeth, as well as the teeth of the various mobiles designed to selectively engage with these CRa, MEa teeth so as to ensure optimal engagement of the teeth concerned when switching the rotating regulating system SR from one operating mode to another.

[0082] Beyond the variants described with reference to the Figures 1A-C to 10A-B, it is perfectly possible to imagine the implementation of additional variants of the invention where the rotating regulating system SR would be able to operate according to more than two distinct operating modes. Thus, for example, one could envisage a variant combining the first and second aspects of the invention, i.e. a timepiece mechanism where the rotating regulating system SR would be able to operate according to three distinct operating modes, namely (i) a first operating mode where the rotating cage CR is driven in rotation in a first direction of rotation and where the drive wheel set ME is immobilized (the regulating system operating in the manner of a tourbillon), (ii) a second operating mode where the rotating cage CR is immobilized and where the drive wheel set ME is driven in rotation in a second direction of rotation opposite to the first direction of rotation (the regulating system then operating in the manner of a conventional escapement),and (iii) a third mode of operation where the rotating cage CR and the drive wheel set ME are both rotated in the second direction of rotation, while ensuring that the drive wheel set ME is driven at a rotational speed greater than that of the rotating cage CR (the regulating system then operating in the manner of a carousel). In such a case, first and second controls, operable by means of first and second pushers, could be provided in order to selectively control the immobilization or the rotational driving of the rotating cage CR, on the one hand, and, respectively, the direction of rotation of the rotating cage CR, on the other hand, as well as, jointly, the immobilization or the rotational driving of the driving wheel set ME.,

[0083] For the implementation of this three-mode embodiment, it would be possible to adopt a drive device kinematically linked to the finishing gear RF and to the rotating regulating system SR and capable of adopting three distinct configurations. Such a switchable drive device could be based in particular on the use of two secondary rockers mounted on a main rocker and carrying the required mobiles in order to ensure the selective driving of the rotating cage CR and the drive mobile ME, depending on the selected operating mode.

[0084] More specifically, with regard to this three-mode variant, a suitable, but not limiting, implementation mode could for example consist of (i) rotating the rotating cage CR, in the first mode of operation, in a clockwise direction at a rate of one complete revolution per minute, (ii) rotating the drive wheel set ME, in the second mode of operation, in a counterclockwise direction at a rate of one complete revolution per minute, and (iii) rotating the rotating cage CR and the drive wheel set ME, in the third mode of operation, in a counterclockwise direction at a rate of one complete revolution per minute and two complete revolutions per minute, respectively.

[0085] It will be generally understood that various modifications and / or improvements obvious to those skilled in the art may be made to the embodiments described in the present description without departing from the scope of the invention defined by the appended claims.

[0086] For example, although the use of a drive device comprising a lever carrying the required drive mobiles is preferred, other solutions could perfectly well be envisaged ensuring the same functions of selective engagement and disengagement of the rotating cage CR and the drive mobile ME. Thus, for example, the use of a drive mobile kinematically linked to the finishing gear train could be envisaged, which could be moved into a first position in order to ensure the driving of the rotating cage CR, via a first intermediate gear train, or into a second position in order to ensure the driving of the drive mobile ME, via a second intermediate gear train. In this case, at least part of the first intermediate gear train would be immobilized, in the second operating mode, when the rotating cage CR is immobilized.

[0087] It will also be understood that the invention is not limited to the specific use of a stopping device comprising one or more stopping levers each cooperating with an associated star secured to the rotary cage CR or the drive mobile ME. The rotary cage CR and the drive mobile ME could be selectively immobilized by other means. LIST OF REFERENCE SIGNS USED IN THIS DESCRIPTION AND IN THE DRAWINGS

[0088] 10Ttourbillon watch mechanism (first embodiment, or "tourbillon variant") 10Ccarousel watch mechanism (second embodiment, or "carousel variant") 10TCwatch mechanism combining the functions of a tourbillon and a carousel (third embodiment, or "hybrid variant") PLplate of the 10T, 10C resp. 10TC watch mechanism BRbarrel RFinding train of the 10T, 10C resp. 10TC watch mechanism RFemovable of the RF ending train in permanent kinematic connection with the switchable drive device 100 SRrotating regulating system of the 10T, 10C resp. 10TC, in particular tourbillon, carousel, or hybrid tourbillon-carousel CRrotating cage (for example, tourbillon or carousel cage) of the rotating regulating system SR carrying the escapement EC and the regulating organ BL CRadenture (in particular external teeth) of the rotating cage CR ECescapement (in particular anchor escapement) carried by the cagerotating CR REEscape wheel of the EC escapement PECEscape wheel pinion REC BLregulating organ (in particular sprung balance) carried by the rotating cage CR MEdrive wheel kinematically linked to the EC escapement (or seconds wheel or false seconds wheel) MEteeth (in particular external teeth) of the drive wheel ME REWheel of the drive wheel ME meshing with the escape pinion PE PEdrive wheel pinion ME (carousel variant) 100drive device switchable between two configurations (tourbillon variant) 100Brocker of the drive device 100 pivotally mounted around the pivot axis AP b1(first) stop of the rocker 100B g1(first) actuating pin of the rocker 100B actuated by the (first) intermediate control lever L1 b2(second) stop of the rocker 100B g2(second) actuating pin of the rocker 100B actuated by the (second) intermediate control lever L2 105mobiledriver (input wheel) of the switchable drive device 100 105xaxis of the rocker 100B carrying the drive wheel 105 110first wheel carried by the rocker 100B, engaged with the drive wheel 105, ensuring the rotational drive of the rotary cage CR in the first operating mode 110a(first) drive wheel (upper wheel) of the first wheel 110 selectively brought into engagement with the teeth CRa of the rotary cage CR in the first configuration of the drive device 100 110wheel (lower wheel) of the first wheel 110 engaged with the drive wheel 105 110xaxis of the rocker 100B carrying the first wheel 110 115return wheel carried by the rocker 100B, in permanent engagement with the drive wheel 105 115xaxis of the rocker 100B carrying the return wheel 115 120 second mobile carried by the rocker 100B, engaged with the mobile forming a return 115, ensuring the rotational drive of the drive mobile ME in thesecond operating mode 120wheel (upper wheel) of the second mobile 120 engaged with the mobile forming a return 115 120b(second) drive wheel (lower wheel) of the second mobile 120 brought selectively into engagement with the teeth MEa of the drive mobile ME in the second configuration of the drive device 100 120xaxis of the lever 100B carrying the second mobile 120 PRa(first) stone (ruby) mounted by setting on the first end of the hollow shaft of each mobile 105, 110, 115, 120 PRb(second) stone (ruby) mounted by setting on the second end of the hollow shaft of each mobile 105, 110, 115, 120 LVa(first) peripheral lip for setting the stone PRa at the first end of the hollow shaft of each mobile 105, 110, 115, 120 LVb (second) peripheral lip for setting the stone PRb at the second end of the hollow shaft of each mobile 105, 110, 115, 120 200 drive device switchable between two configurations(carousel variant) 200B rocker of the drive device 200 pivotally mounted about the pivot axis AP 205driver mobile (input mobile) of the switchable drive device 200 210first mobile carried by the rocker 200B, engaged with the drive mobile 205, ensuring the rotational drive of the rotary cage CR and the drive mobile ME (at the first rotational speed) in the first operating mode 210a(first) drive wheel (upper wheel) of the first mobile 210 selectively brought into engagement with the toothing CRa of the rotary cage CR in the first configuration of the drive device 200 210b(second) drive wheel (lower wheel) of the first mobile 210 selectively brought into engagement with the intermediate mobile 230 in the first configuration of the drive device 200 220second mobile carried by the rocker 200B, in taken with the drive mobile 205, ensuring the rotational drive of the mobiledrive ME (at the second rotational speed) in the second operating mode 220a(third) drive wheel (upper wheel) of the second wheel set 220 selectively brought into engagement with the intermediate wheel set 230 in the second configuration of the drive device 200 230intermediate wheel set of the drive device 200 ensuring the driving of the drive wheel set ME at the first or second rotational speed depending on the operating mode 230a(first) wheel (upper wheel) of the intermediate wheel set 230 in selective engagement with the drive wheel 220a of the second wheel set 220 (in the second configuration of the drive device 200) and in permanent engagement with the intermediate wheel 250 230b(second) wheel (lower wheel) of the intermediate wheel set 230 in selective engagement with the drive wheel 210b of the first drive wheel set 210 (in the first configuration of the drive device 200) 250 permanent drive intermediate wheelwith the wheel 230a of the intermediate wheel set 230, on the one hand, and the pinion PE of the drive wheel set ME, on the other hand 300 drive device switchable between two configurations (hybrid variant) 310a(first) drive wheel of a wheel set of the switchable drive device 300 selectively brought into engagement with the teeth CRa of the rotating cage CR in the first configuration of the drive device 300 320a(second) drive wheel of a wheel set of the switchable drive device 300 selectively brought into engagement with the teeth CRa of the rotating cage CR in the second configuration of the drive device 300 330a(third) drive wheel of a wheel set of the switchable drive device 300 selectively brought into engagement with the teeth MEa of the drive wheel set ME in the second configuration of the drive device 300 APixel of rotation of the drive wheel set 105, resp. 205 / pivot axis of the rocker 100B, resp. 200B ofswitchable drive device 100, resp. 200 AR Axis of rotation of the rotating cage CR and the drive wheel set ME DA Stop device for selectively immobilizing the rotating cage CR in the second operating mode (and for selectively immobilizing the drive wheel set ME in the first operating mode - tourbillon variant only) DA TC Stop device for selectively immobilizing the drive wheel set ME in the first operating mode (hybrid variant) LAa (first) Stop lever of the stop device DA capable of selectively cooperating with star ETa secured to the rotating cage (tourbillon variant) LAb (second) Stop lever of the stop device DA capable of selectively cooperating with star ETb secured to the drive wheel set ME (tourbillon variant) LA Stop lever of the stop device DA capable of selectively cooperating with star secured to the rotating cage CR (carousel variant) LA TC Stop lever of the devicestop DA TC capable of selectively cooperating with star secured to the drive mobile ME (hybrid variant) ETa (first) star secured to the rotating cage CR for immobilizing the latter in the second operating mode (tourbillon variant) ETb (second) star secured to the drive mobile ME for immobilizing the latter in the first operating mode (tourbillon variant) Ccommand for manually actuating the switching of the drive device 100, 200 resp. 300 and the stop device DA, resp. DA TC in order to operate the rotating regulating system SR according to the first or second operating mode DC1 (first) control device controlling the switching of the drive device 100, 200 resp. 300 between its first and second configurations DC2 (second) control device controlling the actuation of the stop device DA, resp. DA TC RCa(first) column wheel RCb(second) column wheel L Lever ofratchet control actuating the column wheel RCa Ra(first) control wheel integral with the column wheel RCa R1(first) intermediate control wheel driven by the control wheel Ra R2(second) intermediate control wheel driven by the intermediate control wheel R1 Rb(second) control wheel integral with the column wheel RCb, driven by the intermediate control wheel R2 L1(first) intermediate control lever actuated by the column wheel RCa L2(second) intermediate control lever actuated by the column wheel RCb S1(first) direction of rotation of the rotating cage CR of the rotating regulating system SR of the 10TC watch mechanism in the first operating mode (e.g. clockwise) S2(second) direction of rotation (opposite to the first direction of rotation S1) of the rotating cage CR of the rotating regulating system SR of the 10TC watch mechanism in the second operating mode (e.g. counterclockwise) S2' direction of rotation (identical to the directionrotation S2) of the drive wheel ME of the rotating regulating system SR of the 10TC clockwork mechanism in the second operating mode (e.g. counterclockwise)

Claims

1. A clockwork mechanism (10T; 10C) comprising a rotating regulating system (SR) kinematically linked to a finishing train (RF), the rotating regulating system (SR) including a rotating cage (CR) carrying an escapement (EC) and a regulating member (BL), the rotating regulating system (SR) being capable of operating according to a first operating mode where the rotating cage (CR) is driven in rotation and at least according to a second operating mode where the rotating cage (CR) is immobilized while ensuring continuity of operation of the escapement (EC) and of the regulating member (BL), characterized in that the finishing gear (RF) is kinematically linked to the rotating regulating system (SR) via a drive device (100; 200) switchable between a first configuration and at least one second configuration, in that, in the first configuration of the drive device (100; 200), the rotating regulating system (SR) is operated according to the first operating mode and the finishing gear (RF) is kinematically linked to the rotating cage (CR) via the drive device (100; 200), and in that , in the second configuration of the drive device (100; 200), the rotating regulating system (SR) is operated according to the second operating mode and the finishing train (RF) is disengaged from the rotating cage (CR), allowing the rotating cage (CR) to be immobilized, the finishing train (RF) remaining kinematically linked to the escapement (EC).

2. The clockwork mechanism (10T) according to claim 1, characterized in thatthe rotating regulating system (SR) is a tourbillon whose rotating cage (CR) is driven in rotation, in the first operating mode, so that an escapement pinion (PEC) of the escapement (EC) is driven in rotation, with the rotating cage (CR), around a wheel (RE) of a drive wheel (ME) which is immobilized, in the first operating mode, and in that the drive mobile (ME) is released in rotation, in the second operating mode, and kinematically linked to the finishing gear (RF) via the drive device (100) which occupies the second configuration, while the rotating cage (CR) is immobilized.

3. The clockwork mechanism (10T) according to claim 2, characterized in thatthe drive device (100) comprises a rocker (100B) pivotally mounted around a pivot axis (AP) coinciding with the axis of a drive wheel set (105) in kinematic connection with the finishing gear (RF), which rocker (100B) carries a first wheel set (110) driven in rotation by the drive wheel set (105) and capable of selectively ensuring the rotational drive of the rotary cage (CR), in the first configuration of the drive device (100), and of interrupting the rotational drive of the rotary cage (CR), in the second configuration of the drive device (100), in thatthe rocker (100B) further carries a second mobile (120) driven in rotation by the drive mobile (105) and capable of selectively ensuring the rotational drive of the drive mobile (ME), in the second configuration of the drive device (100), and of interrupting the rotational drive of the drive mobile (ME), in the first configuration of the drive device (100), and in that the rocker (100B) also preferably carries a mobile forming a return (115) interposed between the drive mobile (105) and the second mobile (120).

4. The clockwork mechanism (10T) according to claim 3, characterized in thatthe first mobile (110) comprises a first drive wheel (110a) arranged to selectively engage, in the first configuration of the drive device (100), with a toothing (CRa) of the rotary cage (CR) and to be disengaged from the toothing (CRa) of the rotary cage (CR), in the second configuration of the drive device (100), and in that the second mobile (120) comprises a second drive wheel (120b) arranged to selectively engage, in the second configuration of the drive device (100), with a toothing (MEa) of the drive mobile (ME), and to be disengaged from the toothing (MEa) of the drive mobile (ME), in the first configuration of the drive device (100).

5. The clockwork mechanism (10T) according to any one of claims 2 to 4, characterized in thatit further comprises a stopping device (DA) configured so as to immobilize the drive mobile (ME), in the first operating mode, and so as to immobilize the rotating cage (CR), in the second operating mode, and in that the stopping device (DA) preferably comprises a first stopping lever (LAa) capable of cooperating selectively with a first star (ETa) secured to the rotating cage (CR) and a second stopping lever (LAb) capable of cooperating selectively with a second star (ETb) secured to the drive mobile (ME).

6. The clockwork mechanism (10C) according to claim 1, characterized in thatthe rotating regulating system (SR) is a carousel whose rotating cage (CR) is driven in rotation, in the first operating mode, so that an escape pinion (PEC) of the escapement (EC) is driven in rotation, with the rotating cage (CR), around a wheel (RE) of a drive wheel (ME) itself kinematically linked to the finishing gear (RF) so as to be driven in rotation via the drive device (200) at a first rotation speed, in the first operating mode, and in that the drive mobile (ME) is rotated via the drive device (200) at a second rotational speed, different from the first rotational speed, in the second operating mode.

7. The clockwork mechanism (10C) according to claim 6, characterized in thatthe drive device (200) comprises a rocker (200B) pivotally mounted around a pivot axis (AP) coinciding with the axis of a drive wheel set (205) in kinematic connection with the finishing gear (RF), which rocker (200B) carries a first wheel set (210) driven in rotation by the drive wheel set (205) and capable of selectively ensuring the rotational drive of the rotary cage (CR), in the first configuration of the drive device (200), and of interrupting the rotational drive of the rotary cage (CR), in the second configuration of the drive device (200), in that the first mobile (210) also ensures the rotational drive of the drive mobile (ME) at the first rotational speed, in the first configuration of the drive device (200), and in thatthe rocker (200B) further carries a second mobile (220) driven in rotation by the drive mobile (205) and capable of selectively ensuring the rotational drive of the drive mobile (ME) at the second rotation speed, in the second configuration of the drive device (200).

8. The clockwork mechanism (10C) according to claim 7, characterized in that the first mobile (210) comprises a first drive wheel (210a) arranged to selectively engage, in the first configuration of the drive device (200), with a toothing (CRa) of the rotary cage (CR) and to be disengaged from the toothing (CRa) of the rotary cage (CR), in the second configuration of the drive device (200), in thatthe first mobile (210) further comprises a second drive wheel (210b) arranged to selectively engage, in the first configuration of the drive device (200), with an intermediate mobile (230) ensuring the driving of the drive mobile (ME) and to be disengaged from the intermediate mobile (230), in the second configuration of the drive device (200), in that the second mobile (220) comprises a third drive wheel (220a) arranged to selectively engage, in the second configuration of the drive device (200), with the intermediate mobile (230) and to be disengaged from the intermediate mobile (230), in the first configuration of the drive device (200), and in that the intermediate mobile (230) is preferably kinematically linked to the drive mobile (ME) via an intermediate wheel (250) itself engaged with a pinion (PE) of the drive mobile (ME).

9. The clockwork mechanism (10C) according to any one of claims 6 to 8, characterized in that it further comprises a stopping device (DA) configured so as to immobilize the rotating cage (CR), in the second operating mode, and in that the stopping device (DA) preferably comprises a stopping lever (LA) capable of cooperating selectively with a star secured to the rotating cage (CR).

10. A clockwork mechanism (10TC) comprising a rotating regulating system (SR) kinematically linked to a finishing train (RF), the rotating regulating system (SR) including a rotating cage (CR) carrying an escapement (EC) and a regulating organ (BL), the rotating regulating system (SR) further comprising a drive wheel set (ME) capable of driving the escapement (EC), characterized in thatthe rotating regulating system (SR) is capable of operating according to a first operating mode where the rotating cage (CR) is driven in rotation according to a first direction of rotation (S1) and where the drive mobile (ME) is immobilized, and in that the rotating regulating system (SR) is capable of operating at least according to a second operating mode where the rotating cage (CR) is driven in rotation in a second direction of rotation (S2), opposite to the first direction of rotation (S1), and where the drive wheel (ME) is driven in rotation in a direction of rotation (S2') identical to the second direction of rotation (S2) at a rotation speed greater than that of the rotating cage (CR).

11. The clockwork mechanism (10TC) according to claim 10, characterized in that the finishing gear (RF) is kinematically linked to the rotating regulating system (SR) via a drive device (300) switchable between a first configuration and at least one second configuration, in that, in the first configuration of the drive device (300), the rotating regulating system (SR) is operated according to the first operating mode and the finishing gear (RF) is kinematically linked to the rotating cage (CR) via the drive device (300) so that an escapement pinion (PEC) of the escapement (EC) is rotated, with the rotating cage (CR), around a wheel (RE) of the drive wheel set (ME) which is immobilized, and in that , in the second configuration of the drive device (300), the rotating regulating system (SR) is operated according to the second operating mode and the finishing gear (RF) is kinematically linked to the rotating cage (CR) as well as to the drive wheel set (ME) via the drive device (300) so that the escapement pinion (PEC) is driven in rotation, with the rotating cage (CR), as well as by the wheel (RE) of the drive wheel set (ME) which is itself driven in rotation.

12. The clockwork mechanism (10TC) according to claim 11, characterized in that the drive device (300) comprises a first drive wheel (310a) arranged to selectively engage, in the first configuration of the drive device (300), with a toothing (CRa) of the rotary cage (CR) and to be disengaged from the toothing (CRa) of the rotary cage (CR), in the second configuration of the drive device (300), in that the drive device (300) comprises a second drive wheel (320a) arranged to selectively engage, in the second configuration of the drive device (300), with the teeth (CRa) of the rotary cage (CR) and to be disengaged from the teeth (CRa) of the rotary cage (CR), in the first configuration of the drive device (300), and in thatthe drive device (300) comprises a third drive wheel (330a) arranged to selectively engage, in the second configuration of the drive device (300), with a toothing (MEa) of the drive mobile (ME) and to be disengaged from the toothing (MEa) of the drive mobile (ME), in the first configuration of the drive device (300).

13. The clockwork mechanism (10TC) according to any one of claims 10 to 12, characterized in that it also includes a stopping device (DA TC ) configured so as to immobilize the drive mobile (ME), in the first operating mode, and in that the stopping device (DA TC ) preferably includes a stop lever (LA TC ) capable of cooperating selectively with a star secured to the drive mobile (ME).

14. The clockwork mechanism (10T; 10C; 10TC) according to claim 5, 9 or 13, dependent on claim 11 or 12, characterized in that switching the drive device (100; 200; 300) between the first and second configurations and actuating the stop device (DA; DA TC ) are controlled by a manually operable control (C) in order to operate the rotating regulating system (SR) according to the first or second operating mode, in that the control (C) is in particular a column wheel control (RCa, RCb), and in that the control (C) preferably comprises a first control device (DC1) controlling the switching of the drive device (100; 200; 300) and a second control device (DC2) controlling the actuation of the stop device (DA; DA TC ).

15. The clockwork mechanism (10T; 10C; 10TC) according to any one of claims 1 to 9, 11, 12 and 14, characterized in thatthe drive device (100; 200; 300) is continuously driven by the finishing gear (RF) and kinematically connected to the rotating regulating system (SR) without interruption of the kinematic connection during switching of the drive device (100; 200; 300) between the first and second configurations.

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