EP3376305B1 - Winding device with push-button for watch - Google Patents

Description

Field of the invention

The invention relates to a winding device arranged for its attachment to a structure of a watch comprising a case enclosing at least one barrel, relative to which the case is movable a control rod at least for setting the time, said device winding device comprising a pusher, retractable bayonet, and extendable telescopically, comprising, between a barrel arranged to be fixed to said box and a head that can be actuated by the user and which carries a control member, first elastic return means tending to move said head away from said barrel, said pusher being arranged to indirectly drive at least the drum of a said barrel or a ratchet for winding a said barrel, said control member being movable linearly and arranged for, under a action of a user, the driving of at least one mobile rack against second elastic return means.

The invention also relates to a timepiece movement comprising a said structure on which is fixed at least one such winding device.

The invention also relates to a watch comprising such a winding device.

The invention relates to the field of energy recharging mechanisms for watches.

Background of the invention

The manual winding of watches, especially mechanical watches, is always a concern for manufacturers, because of the constraints placed on the stem and the wear of the components. In particular, small-sized watches are awkward to wind up using the crown, which is often not very accessible and very small.

It is therefore difficult for the user to correctly transmit high torques and forces with crowns and pushers of very small diameter, the accessibility of which is sometimes difficult, especially on ladies' watches, for which this accessibility can be further complicated by the length of the user's fingernails.

Other mechanisms were produced, in particular by Léon Hatot, who produced covers with flaps covering the crown for ladies' watches, the opening of which allowed energy to be recharged.

At the same time, such mechanisms make it difficult to ensure a large power reserve, because of the large number of cycles to be performed for complete winding. For example, it is not uncommon to require more than 20 turns of the stem for the complete winding of a small ladies' watch comprising a single barrel. The gear ratio must often be reduced, so as to reduce the torque to be applied to the crown. And the space available does not always allow an automatic winding mechanism to be accommodated.

The document FR1269569A in the name of GLOBO describes a control member, comprising a body fixed to a housing, and a pusher movable axially in this body, between a rest position and an active position. The pusher can rotate in the body, at least when it occupies a determined axial position with respect to this body. The pusher and the body have locking members naturally engaging to keep the pusher in the active position when it has been rotated relative to the body, from the angular position it occupies in the rest position. The pusher is placed under the action of a return spring which tends to keep it in the rest position, and the locking members form a bayonet coupling device. The body consists of a socket, and the pusher by a rod carrying a hollow control button which has an external wall surrounding the open end of the socket. One of the elements of the bayonet coupling device is formed by an L-shaped cutout of the socket, and the other of these elements by a pin projecting inside the wall of the socket. button, and plunging into this cutout. In a variant, the body has an internal rim with a shaped opening for the passage of the pusher, the latter having a portion of shape corresponding to that of this opening, this part of the pusher being engaged in the opening when the pusher is at rest. , and being located under the rim when this pusher is in the active position, this rim of the body and the corresponding part of the pusher constituting these locking members. In another variant, the locking members are formed by a corresponding thread and internal thread, remote from each other when the pusher is in the rest position, and coming into engagement with one another when the pusher is brought into the active position, the pusher carrying threads permanently engaged in corresponding threads of the body.

The document CH710271A2 in the name of MONTRES BREGUET SA describes a telescopic control member for triggering and / or stopping a function of a watch, comprising a fixed body driven into an opening of a box, and in which a push button slides. The control member comprises resilient return means, an axially movable rod configured to cooperate with a control mechanism, a crown being secured to the rod by means of telescopic means. The telescopic means comprise an intermediate element integral with the crown, the intermediate element being configured to be guided on the rod and arranged to be integral with the rod in at least two axial positions, so that the control member can pass through 'a retracted position, in which the control member is deactivated, towards a deployed position, called the maneuvering position, in which the control member is able to trigger and / or stop the function.

The document WO02 / 077724A2 in the name of GLASHUETTER UHRENBETRIEB GmbH describes a striking device actuated by a mainspring barrel independent of the movement of the watch. The watch includes mechanical control means that can be actuated manually to engage the striking device. The barrel is reassembled by a winding bar, the free end of which ends in a toothed segment, and which is kinematically connected to a winding pusher on the one hand, and to the striking motor spring on the other hand.

The document CH12174 on behalf of STAUFFER describes a mechanism for winding the striking barrel in repeater watches, actuated by the crown which moves on a cylindrical pendant, parallel to its axis.

The document FR2993062A1 in the name of CHEVAL FRERES describes an associated watch winding crown assembly, in axial displacement and in rotation, with a threaded axis passing through a case, via a tube fixed to it, and in connection, to one of its ends opposite the crown, with a stem of a mechanism for driving the different functions of the watch. The crown is housed in a lateral external recess of the case, of substantially corresponding shape, in which it is capable of being retracted or of being extracted therefrom by translation means with telescopic effect actuated automatically by a manual pulse trigger, it - even housed in crown housing.

Summary of the invention

The invention proposes to define a winding mechanism that is easier to use than the usual crown, especially for small-sized watches such as ladies' watches, and making it possible to perform a complete recharging of energy with a reduced number of cycles. reassembly.

To this end, the invention relates to a winding device according to claim 1.

The invention also relates to a timepiece movement comprising a structure to which is fixed at least one such winding device.

The invention also relates to a watch comprising such a winding device, or such a movement.

Brief description of the drawings

• la figure 1 représente, de façon schématisée, et en perspective vue depuis le dessous, un mouvement d'horlogerie comportant un dispositif de remontage selon l'invention, agencé pour le remontage d'un barillet, avec un poussoir représenté dans ses trois positions remarquables : de repos, activé, de butée;
• la figure 2 représente, de façon schématisée, et en perspective vue depuis le dessus, le mouvement de la figure 1 ;
• la figure 3 représente, de façon schématisée, en vue de dessus, une montre comportant une boîte enfermant le mouvement de la figure 1 ;
• la figure 4 représente, de façon schématisée, en vue de dessous, la montre de la figure 3;
• la figure 5 représente, de façon schématisée, la même montre en coupe selon la section A-A de la figure 4 ;
• la figure 6 représente, de façon schématisée, et en perspective vue depuis le dessus, une partie de la montre de la figure 3 avec une structure qui porte le dispositif de remontage selon l'invention;
• la figure 7 représente, de façon schématisée, et en perspective le poussoir du dispositif de remontage selon l'invention, constituant un module indépendant, dont la figure 8 représente, de la même façon, le canon que comporte ce poussoir;
• les figures 9, 10 et 11 représentent, de façon schématisée, et en coupe longitudinale par rapport à l'axe du poussoir, ce module poussoir, respectivement en position activée, de repos, et de butée.

Other characteristics and advantages of the invention will become apparent on reading the detailed description which follows, with reference to the appended drawings, where:

• the figure 1 represents, schematically, and in perspective seen from below, a timepiece movement comprising a winding device according to the invention, arranged for winding a barrel, with a pusher shown in its three remarkable positions: rest , activated, stop;
• the figure 2 represents, schematically, and in perspective seen from above, the movement of the figure 1 ;
• the figure 3 shows, schematically, in top view, a watch comprising a case enclosing the movement of the figure 1 ;
• the figure 4 represents, schematically, in view from below, the watch of the figure 3 ;
• the figure 5 represents, schematically, the same watch in section according to section AA of the figure 4 ;
• the figure 6 represents, schematically, and in perspective seen from above, part of the watch of the figure 3 with a structure which carries the winding device according to the invention;
• the figure 7 represents, schematically, and in perspective the pusher of the winding device according to the invention, constituting an independent module, whose figure 8 represents, in the same way, the barrel that this pusher comprises;
• the figures 9, 10 and 11 represent, schematically, and in longitudinal section with respect to the axis of the pusher, this pusher module, respectively in the activated, rest, and stop position.

Detailed description of the preferred embodiments

The invention relates to a winding device 1 for a watch 100, in particular a mechanical watch. Such a watch 100 conventionally comprises a box 200 enclosing at least one barrel 300, in particular provided with a ratchet 400, relative to which box 200 is movable, a rod 500 for controlling at least the time setting.

The winding device 1 is arranged for its attachment to a structure 700 of such a watch 100, this structure 700 possibly being a plate or a bridge, or the like, of a movement 600 intended to be integrated into the watch 100, or again the box 200 itself, or an organ that it comprises, such as caseband, back, or the like.

The winding device 1 according to the invention is versatile, since it can constitute a main winding device, or an auxiliary winding device, in particular in the case where the watch also includes an automatic winding device. This winding device 1 can supply energy both to a main barrel intended for driving a movement 600, as well as a secondary barrel for a secondary function, such as a chronograph or even a striking mechanism, an automaton, or the like. . Of course, the winding device 1 can also be arranged for driving a plurality of ratchets each linked to a different barrel.

The invention is illustrated by the figures in the particular and non-limiting case of the drive of a main barrel.

This winding device 1 comprises a pusher 2, which is arranged to indirectly drive at least one ratchet 400 for winding a barrel 300, or to indirectly drive the drum of this barrel 300.

This pusher 2 is retractable with bayonet and telescopically extendable, and comprises, between a barrel 21 arranged to be fixed to a box 200 and a head 7 which can be actuated by the user and which carries a control member 8, first means of elastic return 6 tending to move the head 7 away from the barrel 21.

This head 7 is movable in translation relative to the longitudinal axis of the barrel 21, between two extreme limit switches which are a stop position PB, where the head 7 is as close as possible to the box 200, and in which position of stop PB the head 7 has a degree of freedom in rotation with respect to the longitudinal axis of the barrel 21, and an activated position PA which is a position of maximum elongation, more easily accessible to the user, and where the head 7 is indexed in rotation with respect to the box 200 in an indexed angular position, this head 7 being able to occupy, between these two stop positions PB and activated PA, a rest position PR where the head 7 is able to be immobilized longitudinally with respect to at the barrel 21, in at least one angular locking position which is different from the indexed angular position. More particularly, this barrel 21 comprises a first bore 22 for guiding a shaft 81 which is fixed to the head 7 and which constitutes the control member 8, for driving, in particular but not limited to in translation, by thrust of 'a rack 4 or a mobile timepiece component.

This pusher 2 is linearly movable and arranged to, under an action of a user, drive, in particular in translation as in the particular case illustrated by the figures, at least one rack 4. It is understood that the rack 4 may have a different stroke. that linear, in particular a circular race, for example following the contour of the movement if this one is of round shape, or other. In the non-limiting example of the figures, the rack 4 is guided on two supports 41, this configuration is also suitable for a circular travel of the rack 4.

According to the invention, the pusher 2 is only used for winding, and is independent of the rod 500.

Of course, this in no way prevents the rod 500 from having a conventional function of winding an energy reservoir of the watch, in particular a barrel.

It should be understood that the pusher 2 does not use any cog in relation to the rod 500, and is independent in order to directly control the rotation of a ratchet.

This pusher 2 is telescopically extendable, and comprises, between a barrel 21 arranged to be fixed to the box 200 and a head 7 which can be actuated by the user and which carries the control member 8, first elastic return means 6 which tend to move the head 7 away from the barrel 21.

The head 7 is movable, in a limited manner, in rotation, and in translation, relative to the longitudinal axis of the barrel 21

The head 7 is movable in translation with respect to the longitudinal axis of the barrel 21, between two extreme limit switches: a stop position PB, where this head 7 is as close as possible to the box 200, for example in a recess, in which the stop position PB the head 7 has a degree of freedom in rotation with respect to the longitudinal axis of the barrel, and an activated position PA which is a position of maximum elongation, where it is more easily accessible to the user , and where it is indexed in rotation relative to the box 200 in an indexed angular position. Between these two stop positions PB and activated PA, the head 7 can occupy a rest position where it is immobilized longitudinally with respect to the barrel 21, in at least one angular locking position, which is different from the indexed angular position.

It will be understood that the stop position PB is a transitional position which is only used for a change in the angular position of the head 7 relative to the barrel 21: from the indexed angular position to the angular locking position, or vice versa. It is in this stop position PB that the user imparts to the head 7 the rotation which allows him to change his angular position, by 45 ° in the particular non-limiting example of the figures.

Certain figures superimpose the visualization of these three positions, the numerical marks are then in certain cases assigned the letter B stop, A activated or R rest to better distinguish them.

According to the invention, the rack 4 is movable against second elastic return means 5, which are arranged to oppose a force resistant to the thrust of the rack 4, and brings it back to the start of the stroke each time the user releases the pusher 2, and, more particularly, this at least one rack 4 is mounted slidably, and is guided linearly by guide means, or by at least two supports 41 in the non-limiting illustrated embodiment, and cooperates with a winding mobile 42 which meshes with a return rake 43. This return rake 43 is actuated by at least one return spring 44 that includes the second elastic return means 5,

More particularly, the winding mobile 42 engages with a sliding gear 45 which, depending on its direction of rotation, engages or not, either directly with the ratchet 400, or else, as illustrated in the figures with a winding ring 46 which itself meshes with the ratchet 400, for winding the barrel 300 associated with the ratchet 400 under the effect of actuation of the pusher 2.

It is understood that the choice of the gear ratios between the winding mobile 42, the wandering gear 45, and the winding ring 46, makes it possible to adjust the number of cycles to be carried out to obtain a complete winding of the barrel, or to increase the torque transmitted during each winding cycle by pressing push-button 2 to the end of travel.

More particularly, the winding mobile 42 meshes with a sliding gear 45 through at least one inverter pinion 47, depending on the position of the pusher 2 in the box 200, and the direction of rotation of the barrel or barrels. Of course, it is possible to interpose, if necessary, a longer gear between the winding mobile 42 and the wandering transmission 45, with as many references and reversers as necessary.

In the non-limiting illustrated case, which concerns a very small ladies' watch caliber, the connection is made only between the winding mobile 42 and the ratchet 400, in fact it is easy to adapt the size of the mobile of winding 42 according to the desired ratio. More particularly, the sliding gear 45, the inverter pinion 47, if any, and the winding ring 46, act as a gear, with a ratio of 1, it is naturally possible to modify this ratio with mobiles with pinions and wheels, but at detriment of clutter.

It will be understood that the presence of the winding ring 46 or / and of the reversing pinion 47 is imposed by the relative positioning between the barrel 300 and the winding device 1 according to the invention, not only in terms of spacing, but also depending on their relative angular positioning with respect to the box of watch, the direction of rotation of the barrel 300 during its unwinding being imposed by the direction of travel of the gear train of the clockwork movement 600 to which this barrel 300 supplies energy.

More particularly the winding device 1 comprises a third elastic return means, or a non-return pawl 48 provided with a spring 480, or a jumper spring or the like, to prevent unwinding of the barrel, and cooperating with the crown d 'winding 46 or with the ratchet 400. The wandering gear 45 can therefore easily drop from the winding ring 46 without receiving adverse tension.

In the illustrated embodiment, this pawl 48 is on the winding ring 46, rather than on the ratchet 400, for space optimization, due to a low thickness movement configuration available, which prevents placing the pawl on. the ratchet, or else a spring-jumper having the same function, as could be the case on a larger caliber.

In the illustrated embodiment, during the outward stroke (pushing the rack 4), the player engages, in the return stroke the player disengages. This configuration is preferred to the reverse configuration, which would require unnecessary oversizing of the return spring of rack 4.

More particularly, and as visible in the embodiment illustrated by the figures, the first linear stroke of the head 7 is parallel to the second linear stroke of the rack 4.

In another variant not shown, the first linear stroke of the head 7 is not parallel to the second linear stroke of the rack 4, and the control member 8 cooperates with a rack 4 by an articulated connection, for example with an intermediate arm comprising a first articulation with the control member 8, and a second articulation with the rack 4, or the like. Such articulations can be conventionally produced by articulation pins, or else this articulated connection is made using a component made of micromachinable material, such as silicon or the like, comprising a plurality of necks forming as many articulations, this component being interposed between the rack 4 and the control member 8, or else integral with the rack 4, with which, it can, again, be made in one piece. In yet another variant, the thrust connection between the control member 8 and the rack 4 is effected by sloping surfaces forming corners.

More particularly, in an advantageous embodiment illustrated by the figures, the pusher 2 is a retractable bayonet pusher, and comprises a barrel 21 arranged to be screwed or / and glued in an implantation 201 of the box 200. This barrel 21 which comprises a barrel 21. first bore 22, for guiding a shaft 81 which is fixed to the head 7, for example by a thread 29 and an internal thread 79, or the like, and which constitutes the control member 8 for the drive, in particular by translation, of the at least one rack 4. More particularly, at least one seal 92 is interposed between the first bore 22 and the shaft 81, to seal the inside of the box 200.

In the non-limiting embodiment illustrated, the shaft 81 comprises, at its end, a screw 80 which has a smooth front surface, more particularly flat, free of slits, its driving being made by a peripheral profile, so as not to catch the rack 4 during a rotation of the pusher 2 around its longitudinal axis. This screw 80 also serves, advantageously, as a rear stop to prevent the extraction of the shaft 81, as can be seen in particular on the figure 9 where the head of this screw 80 comes to bear on an end stop 91, which can be a mechanical stop such as circiips, split ring, or the like, or even a seal.

More particularly and as visible on the figure 7 , the push-button 2 constitutes an independent module arranged to push a rack 4, and which can be inserted integrally into the implantation 201 of the case 200 of a watch 100. Preferably, but not limited to, the insertion of the barrel 21 is made permanently, by screwing or / and gluing or the like.

More particularly the barrel 21 comprises, connected to a stop bearing flange 23 which is intended to come to bear on one face of the box 200, a cylindrical bearing surface 24 on which slides a bore 72 of the head 7. At least one longitudinal groove 25 parallel to the axis of the barrel 21 is formed at the periphery of this cylindrical bearing surface 24, as visible on the figure 7 . A lug 73 which is integral with a front end 71 of the head 7 slides in this longitudinal groove 25 during a relative translation between the head 7 and the barrel 21, in a particular angular position of the head 7 which is an angular position of freedom.

This at least one longitudinal groove 25 opens, in the vicinity of the collar 23, in a recess 27 forming a bayonet profile suitable for receiving the lug 73 during an appropriate rotation of the head 7 relative to the barrel 21, to form an axial stop of the head 7 relative to the barrel 21, the head 7 is then in an angular locking position. The direction of rotation is irrelevant, and is chosen during the ergonomic definition of the product.

More particularly, the barrel 21 comprises a first chamber 28 aligned with a second chamber 78 that the head 7 comprises for receiving a spring 31 tending to move the head 7 away from the barrel 21, the spring 31 constituting the first elastic return means 6 .

More particularly, the clearance 27 comprises a housing 270 arranged to house the lug 73 in a rest position, and which is separated from the longitudinal groove 25 by a peripheral stop 29 preventing any rotation of the head 7 when the lug 73 is housed in the housing 270 in the absence of axial movement of the head 7. The head 7 is then in the rest position referenced PR for the figures, and in the angular locking position, and, to release it in order to '' carry out a reassembly, it is advisable to exert on the head 7 a pressure tending to bring it closer to the collar 23 of the barrel 21, up to the stop position PB, which is a transitional position and which is sufficiently far to allow the clearance between the lug 73 and the peripheral stop 29, the user can not push the head 7 further. The user can then, then, apply a rotation to the head 7 bringing it into the indexed angular position, which allows longitudinal freedom, spring 31 in. then usse the head 7 to the active position PA, where the spring 31 is in its most relaxed position, and from which the user can maneuver the head 7 and reassemble the barrel by a certain number of successive pressures. This rotation is 45 ° in the non-limiting example of the figures.

Preferably, only a knurled end, or the like, of the head 7, as well as an external bearing surface 77, protrude from the box 200, the mechanism of the pusher 2 thus remains hidden, and protected, in the box 200 at all times.

In the particular case illustrated by the figures, the barrel 21 comprises two identical bayonet grooves, offset by 180 °.

The invention is illustrated here with a pusher 2 with a single stage. It is naturally possible to manufacture a similar mechanism, with a greater linear stroke, in the form of a multi-stage pusher, these stages being internal and coaxial with each other, and each comprising return means tending to its elongation. maximum.

More particularly, the winding device 1 constitutes a module independent of the rod 300 and which is arranged to be fixed to the box 200.

The invention also relates to a timepiece movement 600 comprising such a structure 700, on which is fixed at least one winding device 1 according to the invention.

Pusher 2 is designed to be housed anywhere in the watch. For example, the figures illustrate a pusher 2 which is located substantially at 8 o'clock, which explains the need for an inverter pinion 47 to drive the ratchet in the correct direction. This inverter pinion would not be necessary in another configuration, for example with pusher 2 substantially at 4 o'clock. Thus the invention allows the placement of the pusher 2 in any location comprising an available volume, which is advantageous.

In a particular embodiment, with a movement of a width of 13.2 mm, the stroke of the rack is 2.7mm. The pusher 2 must be adapted to this long stroke of the rack. Preferably, the strokes of the pusher and of the rack are similar, or even identical. The locking position must be made with the pusher and not in the mechanism, because, unlike a usual pusher, it is necessary to perform the stop in the pusher, to have access to the release of the bayonet. in fact to make the most of the available space. If the movement width was 20mm and not 13.2mm, we could get much larger strokes. The invention takes good advantage of a rectangular movement, which offers a lot of space available as soon as the stem is offset, and this over the entire width of the movement. In this particular case, the stroke of the head 7 of the pusher 2 is 2.7mm, the empty stroke of the screw 80 before touching the rack 4 at the start of stroke stop is 0.1mm, the stroke available between the stops of the rack on the supports 41 is 2.7mm, and the useful stroke of the rack to cock the barrel is 2.6mm, due to 0.1mm of stroke of the pusher which is dedicated to the safety of the end-stroke and stop position rack rack.

The invention advantageously uses only three return means: the first elastic return means 6 (spring 31) which tend to move the head 7 away from the barrel 21, the second elastic return means 5 which return the rack, and the third elastic return means cooperating with the winding ring 46 or with the ratchet 400, which can be constituted by the spring 480 of the pawl 48 in the non-limiting variant illustrated by the figures. The product is generally ergonomic, with a retractable pusher, the advantage of which is to have a long stroke, but invisible. The user is not embarrassed when the pusher is hidden. The rack's return force must be as low as possible, sized to overcome passive friction.
The same principle applies to the pusher. The return forces of these first and second return means are similar and of the same order, without any special importance for the operation of the product, the main thing being that each one manages to overcome the possible jamming of the components of the mechanism that it drives.

The invention also relates to a watch 100, in particular a mechanical watch, comprising a box 200 enclosing at least one barrel 300 provided with a ratchet 400, relative to which box 200 is movable a rod 500 for controlling at least the setting. time, the watch 100 comprising such a structure 700 to which is attached a winding device 1 according to the invention, or comprising such a movement 600, and this case 200 comprises at least one implantation 201 for housing a pusher 2 , which is distant from the rod 500.

Claims (14)

1. Winding device (1) arranged for the fastening thereof to a structure (700) of a watch (100) including a case (200) containing at least one barrel (300), a stem (500), movable with respect to said case (200), for controlling at least the hand-setting function, said winding device (1) including a retractable and telescopically extendable bayonet push-piece (2), including, between a pipe (21) arranged to be fastened to said case (200) and a user-actuatable head (7) which carries a control member (8), first elastic return means (6) tending to move said head (7) away from said pipe (21), said head (7) being movable in translation with respect to the longitudinal axis of said pipe (21), between two extreme end positions, which are a stop position (PB), wherein said head (7) is as close as possible to said case (200), and in which stop position (PB) said head (7) has one rotational degree of freedom with respect to the longitudinal axis of said pipe (21), and an activated position (PA) which is a position of maximum elongation, more easily accessible to the user, and wherein said head (7) is indexed in rotation with respect to said case (200) in an indexed angular position, said head (7) being capable of occupying, between said two stop (PB) and activated (PA) positions, a rest position (PR) wherein said head (7) is capable of being immobilised longitudinally with respect to said pipe (21), in at least one angular locking position which is different from said indexed angular position, said push-piece (2), which is independent of said stem (500), being dedicated exclusively to the winding function and being arranged to indirectly drive at least the drum of a said barrel (300) or a ratchet-wheel (400) in order to wind a said barrel (300), said control member (8) being movable linearly and arranged, upon a user action, for driving at least one movable rack (4) against second elastic return means (5), said at least one rack (4) being slidably mounted and guided by guide means or by at least two supports (41), and cooperating with a winding wheel set (42) which meshes with an intermediate rack (43) actuated by at least one return spring (44) included in said second elastic return means (5).
2. Winding device (1) according to claim 1, characterised in that said winding wheel set (42) meshes with a sliding intermediate wheel (45) which, depending upon its direction of rotation, meshes or does not mesh with a said ratchet-wheel (400), or with a transmission crown-wheel (46) meshing with said ratchet-wheel (400), or with the drum of said barrel (300), for winding said barrel (300) as a result of actuation of said push-piece (2).
3. Winding device (1) according to claim 2, characterised in that said winding wheel set (42) meshes with a sliding intermediate wheel (45) via at least one reverser pinion (47).
4. Winding device (1) according to claim 2 or 3, characterised in that said winding device (1) includes a third elastic return means, or a click (48), cooperating with said transmission crown-wheel (46) or with said ratchet-wheel (400).
5. Winding device (1) according to one of claims 1 to 4, characterised in that said rack (4) is linearly movable, and in that said head (7) is movable on a first linear travel, which is parallel to a second linear travel on which said rack (4) is movable.
6. Winding device (1) according to one of claims 1 to 5, characterised in that said winding device (1) forms a module independent of said stem (500) and which is arranged to be fastened to said case (200).
7. Winding device (1) according to one of claims 1 to 6, characterised in that said pipe (21) includes a first bore (22) for guiding an arbor (81) which is fastened to said head (7) and which forms said control device (8) for pushing a rack (4) or a moving timepiece component.
8. Winding device (1) according to one of claims 1 to 7, characterised in that said push-piece (2) forms an independent module.
9. Winding device (1) according to one of claims 1 to 8, characterised in that said pipe (21) includes, adjacent to a thrust collar (23), a cylindrical shoulder (24) on which slides a bore (72) of said head (7) and inside which is provided at least one longitudinal slot (25) parallel to its axis and inside which slides a lug (73) integral with a front end (71) of said head (7), said at least one longitudinal slot (25) leading, in proximity to said collar (23), into a recess (27) forming a bayonet profile capable of receiving said lug (73) upon suitable rotation of said head (7) with respect to said pipe (21), to form an axial stop for said head (7) with respect to said pipe (21).
10. Winding device (1) according to one of claims 1 to 9, characterised in that said pipe (21) includes a first chamber (28) aligned with a second chamber (78) included in said head (7) for reception of a spring (31) tending to move said head (7) away from said pipe (21), said spring (31) forming said first elastic return means (6).
11. Winding device (1) according to claims 9 and 10, characterised in that said recess (27) includes a housing (270) arranged to house said lug (73) in a rest position, and which is separated from said longitudinal slot (25) by a peripheral stop (29) preventing any rotation of said head (7), when said lug (73) is housed inside said housing (270) in the absence of axial movement by said head (7).
12. Timepiece movement (600) including a structure (700) on which is fastened at least one winding device (1) according to one of claims 1 to 11.
13. Watch (100) including a case (200) containing at least one barrel (300), and a stem (500), movable with respect to said case (200), for controlling at least the hand-setting function, said watch (100) including a structure (700) to which is fastened a winding device (1) according to one of claims 1 to 11, or including a movement (600) according to claim 12, and said case (200) including at least one chamber (201) for housing a said push-piece (2), which is remote from said stem (500).
14. Watch (100) according to claim 13, characterised in that said watch (100) is a mechanical watch.

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