EP3969964A1 - Watch movement with automatic windup - Google Patents

Watch movement with automatic windup

Info

Publication number
EP3969964A1
EP3969964A1 EP20721316.6A EP20721316A EP3969964A1 EP 3969964 A1 EP3969964 A1 EP 3969964A1 EP 20721316 A EP20721316 A EP 20721316A EP 3969964 A1 EP3969964 A1 EP 3969964A1
Authority
EP
European Patent Office
Prior art keywords
barrel
ring
oscillating mass
movement
oscillating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20721316.6A
Other languages
German (de)
French (fr)
Inventor
Sylvain Geiser
Quentin BENOIST
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Patek Philippe SA Geneve
Original Assignee
Patek Philippe SA Geneve
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Patek Philippe SA Geneve filed Critical Patek Philippe SA Geneve
Publication of EP3969964A1 publication Critical patent/EP3969964A1/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B5/00—Automatic winding up
    • G04B5/02—Automatic winding up by self-winding caused by the movement of the watch
    • G04B5/18—Supports, suspensions or guide arrangements, for oscillating weights
    • G04B5/184—Guide arrangement of the moving weight in a circular course
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B5/00—Automatic winding up
    • G04B5/02—Automatic winding up by self-winding caused by the movement of the watch
    • G04B5/10—Automatic winding up by self-winding caused by the movement of the watch by oscillating weights the movement of which is not limited
    • G04B5/14—Automatic winding up by self-winding caused by the movement of the watch by oscillating weights the movement of which is not limited acting in both directions

Definitions

  • the present invention relates to a self-winding watch movement comprising:
  • a barrel comprising a bung and a barrel drum concentric with the bung, and inside which a motor spring is wound, the latter being hooked by its outer coil to the barrel drum and by its internal coil to the bung;
  • a downside to self-winding watches is that they tend not to be as thin as they could be if they were only equipped with a manual winding mechanism. Indeed, the presence of an oscillating weight has the effect of significantly thickening the watch movements which are equipped with an automatic winding mechanism.
  • Patent document CH 458 213 describes a self-winding watch movement which complies with the definition given in the preamble and which is supposed to remedy the aforementioned drawbacks.
  • This known clockwork movement comprises on the one hand an oscillating weight which is housed in a peripheral zone of the movement, entirely in the height of the latter, and on the other hand, a winding and time-setting stem which is arranged perpendicular to the plane of movement so as to emerge in an eccentric position on the bottom side thereof.
  • the oscillating weight is fixed to a rotating ring which is arranged concentrically to the movement, and the latter comprises an internal toothing which is arranged to drive the ratchet wheel of the barrel through a reduction gear train formed by six intermeshing wheels.
  • the reduction gear of the automatic winding mechanism necessarily takes up space.
  • this cog is not confined to a peripheral zone of the movement. Under these conditions, it would be advantageous to have a self-winding watch movement whose design would make it even thinner.
  • the present invention achieves this and other object by providing a self-winding watch movement which is in accordance with the appended claim 1.
  • the barrel and the oscillating mass are arranged concentrically, the barrel being at the center of the movement, and the annular space in which the oscillating mass is intended to move being arranged around the barrel.
  • the barrel drum is mounted on the movement frame so as to be rotatable only in one direction of rotation.
  • the oscillating mass and the barrel drum are arranged so as to be integral with each other when the oscillating mass rotates in said one direction of rotation.
  • said single direction of rotation corresponds to the winding direction of the barrel.
  • the above characteristics allow the oscillating mass to drive the barrel drum with a drive ratio which is equal to 1.
  • the barrel drum also rotates one revolution on itself in the same direction.
  • the automatic winding according to the invention makes it possible to store mechanical energy more quickly in the barrel, provided that the torque generated by the oscillating weight is sufficient.
  • the pivoting device is arranged so that the oscillating mass is free to rotate around the barrel in both directions, the barrel drum being arranged to be disengaged from the oscillating mass when the latter rotates in the opposite direction to said one direction of rotation.
  • the oscillating mass and the barrel drum are linked to each other by a unidirectional coupling, so that the barrel drum can remain stationary when the oscillating mass rotates in the opposite direction to said one direction of rotation.
  • the pivoting device must be double, so that the oscillating mass and the barrel drum can both rotate relative to the platen, and can also rotate relative to each other.
  • the oscillating mass and the barrel drum are arranged so as to be permanently integral with one another, so that the pivoting device prohibits the oscillating mass, as in the case of the oscillating mass. barrel drum, to rotate in the opposite direction to said one direction of rotation.
  • the oscillating mass drives the barrel drum exclusively in said one direction of rotation.
  • the oscillating mass and the barrel drum never have to rotate independently of each other, so that a simple pivoting device is sufficient.
  • Figure 1 is a perspective view of the back side of a self-winding watch movement which corresponds to a first particular embodiment of the invention, this first embodiment being in accordance with the first variant of the invention;
  • FIG. 2 is a perspective view of the back side of a self-winding watch movement which corresponds to a second particular embodiment of the invention, this second embodiment being in accordance with the second variant of the invention;
  • FIG. 3 is a partial cross-sectional view showing the connection between the oscillating mass and the barrel drum of the self-winding watch movement of FIG. 2.
  • FIG. 1 shows in particular a barrel 3 of low height which is placed in the center of the movement and a ball bearing 5 which surrounds the barrel.
  • the barrel 3 contains a mainspring 11 which is wound on itself and which is fixed to the ball bearing by its outer coil and to a central plug 9 by its internal coil.
  • FIG. 1 also shows an oscillating mass 7 in the form of a ring sector, which is arranged to rotate around the barrel 3, concentrically to the latter.
  • the ball bearing 5 fulfills in particular the function of a pivoting device for the oscillating mass.
  • the ball bearing 5 has three coplanar and concentric rings.
  • the inner ring is referenced 13, the intermediate ring 14 and the outer ring 15.
  • the intermediate ring 14 is fixed on the plate (not shown) of the watch movement, while the inner 13 and outer rings 15 of the ball bearing 5 are free to rotate independently of one another, concentrically with the intermediate ring 14.
  • the ball bearing 5 fulfills an interface function between the barrel 3 on the one hand, and the oscillating weight 7 on the other hand.
  • the inner ring 13 of the ball bearing 5 fulfills the function of drum in the barrel 3.
  • the outer ring 15 constitutes the rotating part of the pivoting device of the oscillating mass 7, this the latter being fixed to the outer ring of the ball bearing (by gluing for example).
  • a first elastic pawl (referenced 19) which is mounted on the movement at 3 o'clock, and we can see on the other hand that the inner ring 13 acting as a barrel drum is taller than the other two rings 14, 15 of the ball bearing.
  • the inner ring 13 in fact comprises a raised part provided with toothing outer saw 17 which protrudes above the level of the upper faces of the other two rings. It can also be seen that the saw teeth of the toothing 17 are arranged to cooperate with the first elastic pawl 19 which is carried by the fixed ring 14 of the ball bearing 5. It will therefore be understood that the inner ring, in other words the drum cylinder, 13 can only turn in one direction.
  • the toothing 17 of the barrel drum acts as a winding ratchet for the barrel 3.
  • the barrel drum which is formed by the inner ring 13 , is retained by the first pawl 19 while the watch is running, so that it remains fixed.
  • the plug 9 of the barrel which is designed to drive the cog of the movement.
  • the plug 9 of the barrel is integral with the shank of the center pinion, or minute pinion, of the movement.
  • the center pinion is itself connected to the exhaust by a cog which may be of the conventional type. This cog is visible in figure 1, but the elements that compose it are not referenced. It will be understood from the above that, because the plug 9 of the barrel 3 of the present example is integral with the center pinion, it rotates at a rate of 1 revolution per hour during the running of the movement.
  • FIG. 1 also shows a second elastic pawl. (referenced 21) which is mounted on the outer ring 15, so that it is arranged to rotate with the oscillating weight 7.
  • the pawl 21 is further arranged to cooperate with the teeth 17 of the winding ratchet.
  • the pawl 21 creates a unidirectional coupling between the oscillating mass 7 and the barrel drum constituted by the inner ring 13, so that, on the one hand, the oscillating mass 7 drives the barrel drum with it when rotates in said one direction of rotation (clockwise in figure 1), and that on the other hand, the oscillating mass is free to rotate in the opposite direction in said one direction of rotation without being accompanied by the barrel drum which is retained by the first elastic pawl 19. It will be understood from the above explanations that the self-winding watch movement illustrated in FIG. 1 conforms to the first variant of the invention.
  • the self-winding watch movement of Figure 1 also includes a time setting stem (referenced 23) which emerges radially out of the movement at 3 o'clock.
  • the time-setting rod may for example be connected to the timer gear (not referenced) of the movement in a manner known to those skilled in the art.
  • the time-setting rod 23 be arranged outside the path of the oscillating weight 7. In order to fulfill this latter condition without increasing the time. thickness of the movement which is the subject of the present example, the movements of the oscillating weight 7 are confined within an angular sector which is bounded on either side.
  • Figure 1 shows two elastic stops (referenced 25a and 25b) which are arranged at the periphery of the movement, on either side of the rod 23, so as to prevent the oscillating weight 7 from entering a small angular sector centered on the time-setting stem. It will be understood that the two resilient stops 25a and 25b also prevent collisions between the two resilient pawls 19 and 21.
  • FIGS. 2 and 3 are respectively perspective and cross-sectional views of a self-winding watch movement which corresponds to a second exemplary embodiment of the invention.
  • the watch movement of Figures 2 and 3 has many characteristics in common with that which has just been described in relation to Figure 1.
  • the elements of the watch movement of Figures 2 and 3 which are identical or similar to elements of the first mode embodiments are designated by the same reference number increased by 50.
  • the few differences between the first and the second embodiment are mainly the consequence of the fact that the second embodiment conforms to the second variant of the invention, while the first embodiment conforms to the first variant.
  • FIGS. 2 and 3 show in particular a barrel 53 of low height which is placed in the center of the movement and a unidirectional ball bearing 55 which surrounds the barrel.
  • the latter comprises a bung 59 and a barrel drum 63, and it can be seen that, conventionally, it also contains a mainspring 61 which is wound on itself and which is fixed to the barrel drum 63 by its coil. external and to the bung 59 by its internal coil.
  • FIGS. 2 and 3 also show an oscillating weight 57 in the form of a ring sector, which is arranged to rotate around the barrel 53, concentrically with the latter, and it will be understood that the unidirectional ball bearing 55 fulfills in particular the function of a control device. pivoting for the oscillating weight.
  • the unidirectional ball bearing 55 has two concentric rings (referenced 64 and 65).
  • the inner ring 64 of the unidirectional ball bearing is fixed to the plate (not shown) of the movement, while the outer ring 65 is arranged to rotate, but only in a single direction of rotation (clockwise in figure 3).
  • unidirectional ball bearings which are said to be "one way”. The description of a ball bearing of this type can be found in particular in patent document CH 694 025. This document is incorporated in the present text by reference. Still referring to FIG.
  • the oscillating mass 57 and the barrel drum 63 are both rigidly fixed to the outer ring 65 (by gluing for example). It will therefore be understood that, in accordance with the second variant of the invention, the oscillating mass 57 and the barrel drum 63 are arranged so as to pivot integrally with one another. In addition, since they are both attached to the outer race 65 of the one-way ball bearing 55, they do not can rotate only in said one direction of rotation. It will also be understood that said single direction of rotation corresponds to the winding direction of barrel 53.
  • the oscillating mass 57 of the watch movement shown in Figures 2 and 3 can only rotate in one direction, it is not possible to confine it within a particular angular sector. Unlike what was the case with the first embodiment, the oscillating weight 57 of the present example must be able to complete full revolutions.
  • the watch movement illustrated in Figures 2 and 3 is compatible with this requirement. In particular, it is devoid of pawls liable to collide with one another, and it also does not include a time-setting rod emerging radially out of the movement.
  • the winding and time-setting stem could for example be oriented along an axis perpendicular to the plane of the movement, and accessible from the dial side or back of the watch.
  • a self-winding watch movement according to the first variant of the invention does not necessarily have two pawls.
  • a unidirectional ball bearing could be used to provide one of the two unidirectional couplings. It will be noted that the use of a unidirectional ball bearing in a self-winding watch movement according to the first variant of the invention would make it possible to overcome the constraint of preventing collisions between the pawls, since the movement watch would then have only one pawl.
  • a self-winding watch movement according to the second variant of the invention does not necessarily include a unidirectional ball bearing.
  • the unidirectional ball bearing could be replaced by a bidirectional ball bearing associated with a ratchet cooperating with a pawl.

Abstract

The watch movement with automatic windup comprises an oscillating weight (7) and a barrel (3) which are arranged concentrically. The oscillating weight is arranged so as to wind up the barrel, which is positioned at the centre of the movement. The barrel drum (13) is mounted on the frame of the movement so as to be rotatable in a single direction of rotation, the single direction causing the barrel (3) to be wound up. The oscillating weight and the barrel drum are also arranged so as to be rigidly connected to one another when the oscillating weight (7) rotates in the single direction of rotation.

Description

Mouvement de montre à remontage automatique Self-winding watch movement
La présente invention concerne un mouvement de montre à remontage automatique comportant : The present invention relates to a self-winding watch movement comprising:
— un barillet comprenant une bonde et un tambour de barillet concentrique à la bonde, et à l'intérieur duquel est enroulé un ressort-moteur, ce dernier étant accroché par sa spire extérieure au tambour de barillet et par sa spire intérieure à la bonde ; A barrel comprising a bung and a barrel drum concentric with the bung, and inside which a motor spring is wound, the latter being hooked by its outer coil to the barrel drum and by its internal coil to the bung;
— un dispositif de pivotement et une masse oscillante montée sur le dispositif de pivotement et prévue pour être reliée cinématiquement au barillet de manière à permettre au barillet d’être remonté par les mouvements de la masse oscillante, la masse oscillante et le dispositif de pivotement étant agencés de manière à être contenus dans un espace annulaire entourant le mouvement. - a pivoting device and an oscillating mass mounted on the pivoting device and designed to be kinematically connected to the barrel so as to allow the barrel to be wound up by the movements of the oscillating mass, the oscillating mass and the pivoting device being arranged so as to be contained in an annular space surrounding the movement.
ART ANTERIEUR PRIOR ART
Dans les mouvements de montres dits à remontage automatique, les mouvements du poignet du porteur de la montre font tourner une masse d'inertie (appelée masse oscillante) qui arme le ressort de barillet par l'intermédiaire d'un rouage agissant dans un seul sens de rotation. In so-called self-winding watch movements, the movements of the wrist of the wearer of the watch rotate an inertia mass (called the oscillating mass) which arms the barrel spring by means of a cog acting in one direction. of rotation.
Un inconvénient des montres à remontage automatique est qu’elles ont tendance à ne pas être aussi fines qu’elles pourraient l’être si elles étaient uniquement équipées d’un mécanisme à remontage manuel. En effet, la présence d’une masse oscillante a pour effet d'épaissir sensiblement les mouvements de montre qui sont munis d’un mécanisme de remontage automatique. A downside to self-winding watches is that they tend not to be as thin as they could be if they were only equipped with a manual winding mechanism. Indeed, the presence of an oscillating weight has the effect of significantly thickening the watch movements which are equipped with an automatic winding mechanism.
Dans le but de remédier à cet inconvénient, on a proposé d’utiliser une masse oscillante périphérique. Conformément à cette solution antérieure, la masse oscillante est agencée dans un espace annulaire qui entoure le mouvement proprement dit. Un avantage de cette solution est que la masse oscillante peut être logée entièrement dans la hauteur du mouvement, de sorte qu’elle ne contribue pas à épaissir ce dernier. Une difficulté associée à cette solution est que la tige de remontoir et de mise à l’heure doit impérativement être située en dehors du parcours de la masse oscillante. Pour pallier cette difficulté, on a proposé notamment de décaler axialement la tige par rapport au mouvement. Malheureusement, un tel décalage s’accompagne inévitablement d’une augmentation comparable de la hauteur du mouvement. In order to remedy this drawback, it has been proposed to use a peripheral oscillating weight. In accordance with this prior solution, the oscillating mass is arranged in an annular space which surrounds the movement proper. An advantage of this solution is that the oscillating weight can be housed entirely within the height of the movement, so that it does not contribute to thicken the latter. A difficulty associated with this solution is that the winding and time-setting stem must imperatively be located outside the path of the oscillating weight. To overcome this difficulty, it has been proposed in particular to offset the rod axially with respect to the movement. Unfortunately, such a shift is inevitably accompanied by a comparable increase in the height of the movement.
Le document de brevet CH 458 213 décrit un mouvement d’horlogerie à remontage automatique qui est conforme à la définition donnée en préambule et qui est censé remédier aux inconvénients précités. Ce mouvement d’horlogerie connu comprend d’une part une masse oscillante qui est logée dans une zone périphérique du mouvement, entièrement dans la hauteur de ce dernier, et d’autre part, une tige de remontoir et de mise à l'heure qui est agencée perpendiculairement au plan du mouvement de manière à émerger en position excentrée du côté fond de celui-ci. Selon le document antérieur susmentionné, la masse oscillante est fixée sur une bague tournante qui est agencée concentriquement au mouvement, et cette dernière comporte une denture intérieure qui est agencée pour entraîner la roue à rochet du barillet à travers un rouage réducteur formé de six mobiles engrenés. Le rouage réducteur du mécanisme de remontage automatique prend forcément de la place. De plus, contrairement à la masse oscillante, ce rouage n’est pas confiné dans une zone périphérique du mouvement. Dans ces conditions, il serait avantageux de disposer d’un mouvement d’horlogerie à remontage automatique dont la conception permettrait de le rendre encore plus mince. Patent document CH 458 213 describes a self-winding watch movement which complies with the definition given in the preamble and which is supposed to remedy the aforementioned drawbacks. This known clockwork movement comprises on the one hand an oscillating weight which is housed in a peripheral zone of the movement, entirely in the height of the latter, and on the other hand, a winding and time-setting stem which is arranged perpendicular to the plane of movement so as to emerge in an eccentric position on the bottom side thereof. According to the aforementioned prior document, the oscillating weight is fixed to a rotating ring which is arranged concentrically to the movement, and the latter comprises an internal toothing which is arranged to drive the ratchet wheel of the barrel through a reduction gear train formed by six intermeshing wheels. . The reduction gear of the automatic winding mechanism necessarily takes up space. In addition, unlike the oscillating weight, this cog is not confined to a peripheral zone of the movement. Under these conditions, it would be advantageous to have a self-winding watch movement whose design would make it even thinner.
BREF EXPOSE DE L’INVENTION BRIEF PRESENTATION OF THE INVENTION
Un but de la présente invention est de remédier aux inconvénients de l’art antérieur qui viennent d’être expliqués. La présente invention atteint ce but ainsi que d’autres en fournissant un mouvement de montre à remontage automatique qui est conforme à la revendication 1 annexée. Conformément à l’invention, le barillet et la masse oscillante sont agencés concentriquement, le barillet se trouvant au centre du mouvement, et l’espace annulaire dans lequel la masse oscillante est prévue pour se déplacer étant agencé autour du barillet. Un avantage de cette disposition est qu’elle permet de donner au barillet le plus grand diamètre possible compte-tenu du diamètre extérieur du mouvement. An aim of the present invention is to remedy the drawbacks of the prior art which have just been explained. The present invention achieves this and other object by providing a self-winding watch movement which is in accordance with the appended claim 1. According to the invention, the barrel and the oscillating mass are arranged concentrically, the barrel being at the center of the movement, and the annular space in which the oscillating mass is intended to move being arranged around the barrel. An advantage of this arrangement is that it makes it possible to give the barrel the largest possible diameter taking into account the outside diameter of the movement.
Conformément à l’invention, le tambour de barillet est monté sur le bâti du mouvement de manière à être rotatif seulement dans un sens unique de rotation. De plus, la masse oscillante et le tambour de barillet sont agencés de manière à être solidaires l’un de l’autre lorsque la masse oscillante tourne dans ledit sens unique de rotation. Enfin, ledit sens unique de rotation correspond au sens de remontage du barillet. According to the invention, the barrel drum is mounted on the movement frame so as to be rotatable only in one direction of rotation. In addition, the oscillating mass and the barrel drum are arranged so as to be integral with each other when the oscillating mass rotates in said one direction of rotation. Finally, said single direction of rotation corresponds to the winding direction of the barrel.
On comprendra tout d'abord que les caractéristiques ci-dessus permettent à la masse oscillante d’entraîner le tambour de barillet avec un rapport d'entraînement qui est égal à 1. Autrement dit, lorsque la masse oscillante accomplit une révolution complète dans ledit sens unique de rotation, le tambour de barillet tourne également d'un tour sur lui-même dans le même sens. Grâce à cette caractéristique, le remontage automatique selon l’invention donne la possibilité d'emmagasiner plus rapidement de l'énergie mécanique dans le barillet, pour autant que le couple engendré par la masse oscillante soit suffisant. Conformément à une première variante de l'invention, le dispositif de pivotement est agencé de manière que la masse oscillante soit libre de tourner autour du barillet dans les deux sens, le tambour de barillet étant agencé pour être débrayé de la masse oscillante lorsque cette dernière tourne dans le sens opposé au dit sens unique de rotation. Autrement dit, la masse oscillante et le tambour de barillet sont liés l’un à l’autre par un couplage unidirectionnel, de sorte que le tambour de barillet peut rester immobile lorsque la masse oscillante tourne dans le sens opposé au dit sens unique de rotation. On comprendra que, conformément à cette première variante, le dispositif de pivotement doit être double, de manière à ce que la masse oscillante et le tambour de barillet puissent tous deux tourner par rapport à la platine, et puissent également tourner l'un par rapport à l'autre. It will first be understood that the above characteristics allow the oscillating mass to drive the barrel drum with a drive ratio which is equal to 1. In other words, when the oscillating mass completes a complete revolution in said direction single rotation, the barrel drum also rotates one revolution on itself in the same direction. Thanks to this characteristic, the automatic winding according to the invention makes it possible to store mechanical energy more quickly in the barrel, provided that the torque generated by the oscillating weight is sufficient. According to a first variant of the invention, the pivoting device is arranged so that the oscillating mass is free to rotate around the barrel in both directions, the barrel drum being arranged to be disengaged from the oscillating mass when the latter rotates in the opposite direction to said one direction of rotation. In other words, the oscillating mass and the barrel drum are linked to each other by a unidirectional coupling, so that the barrel drum can remain stationary when the oscillating mass rotates in the opposite direction to said one direction of rotation. . It will be understood that, according to this first variant, the pivoting device must be double, so that the oscillating mass and the barrel drum can both rotate relative to the platen, and can also rotate relative to each other.
Conformément à une seconde variante de l'invention, la masse oscillante et le tambour de barillet sont agencés de manière à être solidaires l’un de l’autre en permanence, de sorte que le dispositif de pivotement interdit à la masse oscillante, comme au tambour de barillet, de tourner dans le sens opposé au dit sens unique de rotation. On peut comprendre que, selon cette seconde variante, comme avec la première, la masse oscillante entraîne le tambour de barillet exclusivement dans ledit sens unique de rotation. De plus, la masse oscillante et le tambour de barillet n'ont jamais à tourner indépendamment l'un de l'autre, de sorte qu'un dispositif de pivotement simple suffit. According to a second variant of the invention, the oscillating mass and the barrel drum are arranged so as to be permanently integral with one another, so that the pivoting device prohibits the oscillating mass, as in the case of the oscillating mass. barrel drum, to rotate in the opposite direction to said one direction of rotation. It can be understood that, according to this second variant, as with the first, the oscillating mass drives the barrel drum exclusively in said one direction of rotation. In addition, the oscillating mass and the barrel drum never have to rotate independently of each other, so that a simple pivoting device is sufficient.
BREVE DESCRIPTION DES FIGURES BRIEF DESCRIPTION OF THE FIGURES
D’autres caractéristiques et avantages de la présente invention apparaîtront à la lecture de la description qui va suivre, donnée uniquement à titre d’exemple non limitatif, et faite en référence aux dessins annexés dans lesquels : Other characteristics and advantages of the present invention will become apparent on reading the description which follows, given solely by way of non-limiting example, and made with reference to the accompanying drawings in which:
la figure 1 est une vue en perspective du côté fond d’un mouvement de montre à remontage automatique qui correspond à un premier mode de réalisation particulier de l’invention, ce premier mode de réalisation étant conforme à la première variante de l’invention ; Figure 1 is a perspective view of the back side of a self-winding watch movement which corresponds to a first particular embodiment of the invention, this first embodiment being in accordance with the first variant of the invention;
la figure 2 est une vue en perspective du côté fond d'un mouvement de montre à remontage automatique qui correspond à un deuxième mode de réalisation particulier de l’invention, ce deuxième mode de réalisation étant conforme à la seconde variante de l’invention ; FIG. 2 is a perspective view of the back side of a self-winding watch movement which corresponds to a second particular embodiment of the invention, this second embodiment being in accordance with the second variant of the invention;
la figure 3 est une vue partielle en coupe transversale montrant le raccordement entre la masse oscillante et le tambour de barillet du mouvement de montre à remontage automatique de la figure 2. FIG. 3 is a partial cross-sectional view showing the connection between the oscillating mass and the barrel drum of the self-winding watch movement of FIG. 2.
DESCRIPTION DETAILLEE DE MODES DE REALISATION La figure 1 annexée est une vue en perspective du côté fond d’un mouvement de montre à remontage automatique qui correspond à un premier mode de réalisation exemplaire de l’invention. La figure 1 montre en particulier un barillet 3 de faible hauteur qui est placé au centre du mouvement et un roulement à billes 5 qui entoure le barillet. De manière classique, le barillet 3 contient un ressort- moteur 11 qui est enroulé sur lui-même et qui est fixé au roulement à billes par sa spire extérieure et à une bonde centrale 9 par sa spire intérieure. La figure 1 montre également une masse oscillante 7 en forme de secteur d’anneau, qui est agencée rotative autour du barillet 3, concentriquement à ce dernier. On comprendra que le roulement à billes 5 remplit notamment la fonction de dispositif de pivotement pour la masse oscillante. DETAILED DESCRIPTION OF EMBODIMENTS Figure 1 attached is a perspective view of the back side of a self-winding watch movement which corresponds to a first exemplary embodiment of the invention. FIG. 1 shows in particular a barrel 3 of low height which is placed in the center of the movement and a ball bearing 5 which surrounds the barrel. Conventionally, the barrel 3 contains a mainspring 11 which is wound on itself and which is fixed to the ball bearing by its outer coil and to a central plug 9 by its internal coil. FIG. 1 also shows an oscillating mass 7 in the form of a ring sector, which is arranged to rotate around the barrel 3, concentrically to the latter. It will be understood that the ball bearing 5 fulfills in particular the function of a pivoting device for the oscillating mass.
On peut voir que le roulement à billes 5 comporte trois bagues coplanaires et concentriques. La bague intérieure est référencée 13, la bague intermédiaire 14 et la bague extérieure 15. La bague intermédiaire 14 est fixée sur la platine (non représentée) du mouvement de montre, tandis que les bagues intérieure 13 et extérieure 15 du roulement à billes 5 sont libres de tourner indépendamment l’une de l’autre, concentriquement à la bague intermédiaire 14. On peut comprendre que, dans le présent exemple, le roulement à billes 5 remplit une fonction d’interface entre le barillet 3 d’une part, et la masse oscillante 7 d’autre part. En effet, on peut observer que la bague intérieure 13 du roulement à billes 5 remplit la fonction de tambour dans le barillet 3. On peut observer également que la bague extérieure 15 constitue la partie rotative du dispositif de pivotement de la masse oscillante 7, cette dernière étant fixée sur la bague extérieure du roulement à billes (par collage par exemple). It can be seen that the ball bearing 5 has three coplanar and concentric rings. The inner ring is referenced 13, the intermediate ring 14 and the outer ring 15. The intermediate ring 14 is fixed on the plate (not shown) of the watch movement, while the inner 13 and outer rings 15 of the ball bearing 5 are free to rotate independently of one another, concentrically with the intermediate ring 14. It can be understood that, in the present example, the ball bearing 5 fulfills an interface function between the barrel 3 on the one hand, and the oscillating weight 7 on the other hand. Indeed, it can be observed that the inner ring 13 of the ball bearing 5 fulfills the function of drum in the barrel 3. It can also be observed that the outer ring 15 constitutes the rotating part of the pivoting device of the oscillating mass 7, this the latter being fixed to the outer ring of the ball bearing (by gluing for example).
En se penchant encore sur la figure 1 , on peut voir d’une part un premier cliquet élastique (référencé 19) qui est monté sur le mouvement à 3 heures, et on peut voir d’autre part que la bague intérieure 13 faisant office de tambour de barillet est plus haute que les deux autres bagues 14, 15 du roulement à billes. La bague intérieure 13 comporte en effet une partie surélevée munie d’une denture extérieure 17 en scie qui dépasse au-dessus du niveau des faces supérieures des deux autres bagues. On peut voir en outre que les dents de scie de la denture 17 sont agencées pour coopérer avec le premier cliquet élastique 19 qui est porté par la bague fixe 14 du roulement à billes 5. On comprendra donc que la bague intérieure, autrement dit le tambour de barillet, 13 ne peut tourner que dans un sens. Comme on le verra plus en détail plus loin, la denture 17 du tambour de barillet joue le rôle de rochet de remontoir du barillet 3. En effet, contrairement à la disposition usuelle, le tambour de barillet, qui est constitué par la bague intérieure 13, est retenu par le premier cliquet 19 pendant la marche de la montre, de sorte qu'il reste fixe. Dans ces conditions, c'est la bonde 9 du barillet qui est agencée pour entraîner le rouage du mouvement. Conformément au présent mode de réalisation, la bonde 9 du barillet vient de matière avec le tigeron du pignon de centre, ou pignon des minutes, du mouvement. Le pignon de centre est lui-même relié à l'échappement par un rouage qui peut être de type classique. Ce rouage est visible dans la figure 1 , mais les éléments qui le composent ne sont pas référencés. On comprendra de ce qui précède que, du fait que la bonde 9 du barillet 3 du présent exemple est solidaire du pignon de centre, elle tourne à raison de 1 tour par heure lors de la marche du mouvement. Looking again at Figure 1, we can see on the one hand a first elastic pawl (referenced 19) which is mounted on the movement at 3 o'clock, and we can see on the other hand that the inner ring 13 acting as a barrel drum is taller than the other two rings 14, 15 of the ball bearing. The inner ring 13 in fact comprises a raised part provided with toothing outer saw 17 which protrudes above the level of the upper faces of the other two rings. It can also be seen that the saw teeth of the toothing 17 are arranged to cooperate with the first elastic pawl 19 which is carried by the fixed ring 14 of the ball bearing 5. It will therefore be understood that the inner ring, in other words the drum cylinder, 13 can only turn in one direction. As will be seen in more detail below, the toothing 17 of the barrel drum acts as a winding ratchet for the barrel 3. In fact, unlike the usual arrangement, the barrel drum, which is formed by the inner ring 13 , is retained by the first pawl 19 while the watch is running, so that it remains fixed. Under these conditions, it is the plug 9 of the barrel which is designed to drive the cog of the movement. In accordance with this embodiment, the plug 9 of the barrel is integral with the shank of the center pinion, or minute pinion, of the movement. The center pinion is itself connected to the exhaust by a cog which may be of the conventional type. This cog is visible in figure 1, but the elements that compose it are not referenced. It will be understood from the above that, because the plug 9 of the barrel 3 of the present example is integral with the center pinion, it rotates at a rate of 1 revolution per hour during the running of the movement.
On comprendra en outre que le sens unique de rotation dans lequel le cliquet 19 autorise le tambour de barillet 13 à tourner (le sens horaire dans la figure 1 ) correspond au sens de remontage du barillet 3. La figure 1 montre également un deuxième cliquet élastique (référencé 21 ) qui est monté sur la bague extérieure 15, de sorte qu’il est agencé pour tourner avec la masse oscillante 7. Le cliquet 21 est en outre agencé pour coopérer avec la denture 17 du rochet de remontoir. On comprendra que le cliquet 21 crée un couplage unidirectionnel entre la masse oscillante 7 et le tambour de barillet constitué par la bague intérieure 13, de sorte que, d’une part, la masse oscillante 7 entraîne le tambour de barillet avec elle lorsqu’elle tourne dans ledit sens unique de rotation (le sens horaire dans la figure 1 ), et que d’autre part, la masse oscillante est libre de tourner dans le sens inverse au dit sens unique de rotation sans être accompagnée par le tambour de barillet qui est retenu par le premier cliquet élastique 19. On comprendra des explications ci- dessus que le mouvement de montre à remontage automatique illustré dans la figure 1 est conforme à la première variante de l’invention. It will also be understood that the single direction of rotation in which the pawl 19 allows the barrel drum 13 to rotate (clockwise in FIG. 1) corresponds to the winding direction of the barrel 3. FIG. 1 also shows a second elastic pawl. (referenced 21) which is mounted on the outer ring 15, so that it is arranged to rotate with the oscillating weight 7. The pawl 21 is further arranged to cooperate with the teeth 17 of the winding ratchet. It will be understood that the pawl 21 creates a unidirectional coupling between the oscillating mass 7 and the barrel drum constituted by the inner ring 13, so that, on the one hand, the oscillating mass 7 drives the barrel drum with it when rotates in said one direction of rotation (clockwise in figure 1), and that on the other hand, the oscillating mass is free to rotate in the opposite direction in said one direction of rotation without being accompanied by the barrel drum which is retained by the first elastic pawl 19. It will be understood from the above explanations that the self-winding watch movement illustrated in FIG. 1 conforms to the first variant of the invention.
Le mouvement de montre à remontage automatique de la figure 1 comporte encore une tige de mise à l’heure (référencée 23) qui émerge radialement hors du mouvement à 3 heures. La tige de mise à l’heure peut par exemple être reliée au rouage de minuterie (non référencé) du mouvement d’une manière connue de l’homme du métier. Comme déjà mentionné en relation avec l’art antérieur, il est bien évidemment impératif que la tige de mise à l’heure 23 soit agencée en dehors du parcours de la masse oscillante 7. Dans le but de remplir cette dernière condition sans augmenter l’épaisseur du mouvement qui fait l’objet du présent exemple, les déplacements de la masse oscillante 7 sont confinés à l’intérieur d’un secteur angulaire qui est borné de part et d’autre. Ainsi, la figure 1 montre deux butées élastiques (référencées 25a et 25b) qui sont disposées à la périphérie du mouvement, de part et d’autre de la tige 23, de manière à empêcher la masse oscillante 7 de pénétrer dans un petit secteur angulaire centré sur la tige de mise à l’heure. On comprendra que les deux butées élastiques 25a et 25b empêchent aussi les collisions entre les deux cliquets élastiques 19 et 21. The self-winding watch movement of Figure 1 also includes a time setting stem (referenced 23) which emerges radially out of the movement at 3 o'clock. The time-setting rod may for example be connected to the timer gear (not referenced) of the movement in a manner known to those skilled in the art. As already mentioned in relation to the prior art, it is obviously imperative that the time-setting rod 23 be arranged outside the path of the oscillating weight 7. In order to fulfill this latter condition without increasing the time. thickness of the movement which is the subject of the present example, the movements of the oscillating weight 7 are confined within an angular sector which is bounded on either side. Thus, Figure 1 shows two elastic stops (referenced 25a and 25b) which are arranged at the periphery of the movement, on either side of the rod 23, so as to prevent the oscillating weight 7 from entering a small angular sector centered on the time-setting stem. It will be understood that the two resilient stops 25a and 25b also prevent collisions between the two resilient pawls 19 and 21.
Les figures 2 et 3 annexées sont respectivement des vues en perspective et en coupe transversale d’un mouvement de montre à remontage automatique qui correspond à un deuxième mode de réalisation exemplaire de l’invention. Le mouvement horloger des figures 2 et 3 comporte beaucoup de caractéristiques en commun avec celui qui vient d’être décrit en relation avec la figure 1. Les éléments du mouvement horloger des figures 2 et 3 qui sont identiques ou analogues à des éléments du premier mode de réalisation sont désignés par le même numéro de référence augmenté de 50. Comme on va le voir plus en détail, les différences peu nombreuses entre le premier et le deuxième mode de réalisation sont principalement la conséquence du fait que le deuxième mode de réalisation est conforme à la seconde variante de l’invention, alors que le premier mode de réalisation est conforme à la première variante. The attached FIGS. 2 and 3 are respectively perspective and cross-sectional views of a self-winding watch movement which corresponds to a second exemplary embodiment of the invention. The watch movement of Figures 2 and 3 has many characteristics in common with that which has just been described in relation to Figure 1. The elements of the watch movement of Figures 2 and 3 which are identical or similar to elements of the first mode embodiments are designated by the same reference number increased by 50. As will be seen in more detail, the few differences between the first and the second embodiment are mainly the consequence of the fact that the second embodiment conforms to the second variant of the invention, while the first embodiment conforms to the first variant.
Les figures 2 et 3 montrent en particulier un barillet 53 de faible hauteur qui est placé au centre du mouvement et un roulement à billes unidirectionnel 55 qui entoure le barillet. Ce dernier comporte une bonde 59 et un tambour de barillet 63, et on peut voir que, de manière classique, il contient également un ressort-moteur 61 qui est enroulé sur lui-même et qui est fixé au tambour de barillet 63 par sa spire extérieure et à la bonde 59 par sa spire intérieure. Les figures 2 et 3 montrent également une masse oscillante 57 en forme de secteur d’anneau, qui est agencée rotative autour du barillet 53, concentriquement à ce dernier, et on comprendra que le roulement à billes unidirectionnel 55 remplit notamment la fonction de dispositif de pivotement pour la masse oscillante. Figures 2 and 3 show in particular a barrel 53 of low height which is placed in the center of the movement and a unidirectional ball bearing 55 which surrounds the barrel. The latter comprises a bung 59 and a barrel drum 63, and it can be seen that, conventionally, it also contains a mainspring 61 which is wound on itself and which is fixed to the barrel drum 63 by its coil. external and to the bung 59 by its internal coil. FIGS. 2 and 3 also show an oscillating weight 57 in the form of a ring sector, which is arranged to rotate around the barrel 53, concentrically with the latter, and it will be understood that the unidirectional ball bearing 55 fulfills in particular the function of a control device. pivoting for the oscillating weight.
En se référant plus particulièrement à la coupe transversale de la figure 3, on peut voir que le roulement à billes unidirectionnel 55 comporte deux bagues concentriques (référencées 64 et 65). De manière connue en soi, la bague intérieure 64 du roulement à billes unidirectionnel est fixée sur la platine (non représentée) du mouvement, tandis que la bague extérieure 65 est agencée rotative, mais seulement dans un sens unique de rotation (le sens horaire dans la figure 3). Précisons que l’homme du métier connaît des roulements à billes unidirectionnels qui sont dits "one way". On peut trouver la description d'un roulement à billes de ce type notamment dans le document de brevet CH 694 025. Ce document est incorporé dans le présent texte par référence. En se référant toujours à la figure 3, on peut voir que la masse oscillante 57 et le tambour de barillet 63 sont tous les deux fixés rigidement à la bague extérieure 65 (par collage par exemple). On comprendra donc que, conformément à la seconde variante de l'invention, la masse oscillante 57 et le tambour de barillet 63 sont agencés de manière à pivoter solidairement l’un de l’autre. De plus, comme ils sont fixés tous les deux à la bague extérieure 65 du roulement à billes unidirectionnel 55, ils ne peuvent tourner que dans ledit sens unique de rotation. On comprendra en outre que ledit sens unique de rotation correspond au sens de remontage du barillet 53. Referring more particularly to the cross section of FIG. 3, it can be seen that the unidirectional ball bearing 55 has two concentric rings (referenced 64 and 65). In a manner known per se, the inner ring 64 of the unidirectional ball bearing is fixed to the plate (not shown) of the movement, while the outer ring 65 is arranged to rotate, but only in a single direction of rotation (clockwise in figure 3). It should be noted that a person skilled in the art knows unidirectional ball bearings which are said to be "one way". The description of a ball bearing of this type can be found in particular in patent document CH 694 025. This document is incorporated in the present text by reference. Still referring to FIG. 3, it can be seen that the oscillating mass 57 and the barrel drum 63 are both rigidly fixed to the outer ring 65 (by gluing for example). It will therefore be understood that, in accordance with the second variant of the invention, the oscillating mass 57 and the barrel drum 63 are arranged so as to pivot integrally with one another. In addition, since they are both attached to the outer race 65 of the one-way ball bearing 55, they do not can rotate only in said one direction of rotation. It will also be understood that said single direction of rotation corresponds to the winding direction of barrel 53.
On comprendra en outre que, comme la masse oscillante 57 du mouvement horloger représenté dans les figures 2 et 3 ne peut tourner que dans un seul sens, il n’est pas possible de la confiner à l’intérieur d’un secteur angulaire particulier. Contrairement à ce qui était le cas avec le premier mode de réalisation la masse oscillante 57 du présent exemple doit pouvoir accomplir des tours complets. Le mouvement horloger illustré dans les figures 2 et 3 est compatible avec cette exigence. En effet, il est notamment dépourvu de cliquets susceptibles d’entrer en collision l’un avec l’autre, et il ne comporte pas non plus de tige de mise à l’heure émergeant radialement hors du mouvement. Conformément à ce deuxième mode de réalisation, la tige de remontoir et de mise à l’heure (non représentée) pourrait par exemple être orientée selon un axe perpendiculaire au plan du mouvement, et accessible depuis le côté cadran ou fond de la montre. It will also be understood that, as the oscillating mass 57 of the watch movement shown in Figures 2 and 3 can only rotate in one direction, it is not possible to confine it within a particular angular sector. Unlike what was the case with the first embodiment, the oscillating weight 57 of the present example must be able to complete full revolutions. The watch movement illustrated in Figures 2 and 3 is compatible with this requirement. In particular, it is devoid of pawls liable to collide with one another, and it also does not include a time-setting rod emerging radially out of the movement. In accordance with this second embodiment, the winding and time-setting stem (not shown) could for example be oriented along an axis perpendicular to the plane of the movement, and accessible from the dial side or back of the watch.
On comprendra en outre que diverses modifications et/ou améliorations évidentes pour un homme du métier peuvent être apportées aux modes de réalisation qui font l’objet de la présente description sans sortir du cadre de la présente invention définie par les revendications annexées. En particulier, un mouvement de montre à remontage automatique conforme à la première variante de l’invention ne comporte pas nécessairement deux cliquets. L’homme du métier comprendra en effet que, conformément à d’autres modes de réalisation, un roulement à billes unidirectionnel pourrait être utilisé pour assurer un des deux couplages unidirectionnels. On notera que l'utilisation d'un roulement à billes unidirectionnel dans un mouvement de montre à remontage automatique conforme à la première variante de l'invention permettrait de s'affranchir de la contrainte d'empêcher les collisions entre les cliquets, puisque le mouvement de montre ne comporterait alors qu’un seul cliquet. Inversement, un mouvement de montre à remontage automatique conforme à la deuxième variante de l’invention ne comporte pas nécessairement un roulement à billes unidirectionnel. On comprendra en effet que le roulement à billes unidirectionnel pourrait être remplacé par un roulement à billes bidirectionnel associé à un rochet coopérant avec un cliquet. It will also be understood that various modifications and / or improvements obvious to a person skilled in the art can be made to the embodiments which are the subject of the present description without departing from the scope of the present invention defined by the appended claims. In particular, a self-winding watch movement according to the first variant of the invention does not necessarily have two pawls. Those skilled in the art will in fact understand that, according to other embodiments, a unidirectional ball bearing could be used to provide one of the two unidirectional couplings. It will be noted that the use of a unidirectional ball bearing in a self-winding watch movement according to the first variant of the invention would make it possible to overcome the constraint of preventing collisions between the pawls, since the movement watch would then have only one pawl. Conversely, a self-winding watch movement according to the second variant of the invention does not necessarily include a unidirectional ball bearing. We will understand in fact, the unidirectional ball bearing could be replaced by a bidirectional ball bearing associated with a ratchet cooperating with a pawl.

Claims

REVEN D ICATIO NS REVEN D ICATIO NS
1. Mouvement de montre à remontage automatique comportant : 1. Self-winding watch movement comprising:
— un barillet (3 ; 53) comprenant une bonde (9 ; 59) et un tambour de barillet (13 ; 63) concentrique à la bonde, et à l'intérieur duquel est enroulé un ressort-moteur (11 ; 61 ), ce dernier étant accroché par sa spire extérieure au tambour de barillet et par sa spire intérieure à la bonde ; - a barrel (3; 53) comprising a bung (9; 59) and a barrel drum (13; 63) concentric with the bung, and inside which is wound a motor spring (11; 61), this the latter being hooked by its outer coil to the barrel drum and by its internal coil to the bung;
— un dispositif de pivotement (5 ; 55) et une masse oscillante (7 ; 57) montée sur le dispositif de pivotement et prévue pour être reliée cinématiquement au barillet (3 ; 53) de manière à permettre au barillet d’être remonté par les mouvements de la masse oscillante, la masse oscillante (7 ; 57) et le dispositif de pivotement (5 ; 55) étant agencés de manière à être contenus dans un espace annulaire entourant le mouvement ; - a pivoting device (5; 55) and an oscillating mass (7; 57) mounted on the pivoting device and designed to be kinematically connected to the barrel (3; 53) so as to allow the barrel to be wound up by the movements of the oscillating mass, the oscillating mass (7; 57) and the pivoting device (5; 55) being arranged so as to be contained in an annular space surrounding the movement;
caractérisé en ce que le barillet (3 ; 53) et la masse oscillante (7 ; 57) sont agencés concentriquement, le barillet se trouvant au centre du mouvement ; characterized in that the barrel (3; 53) and the oscillating mass (7; 57) are arranged concentrically, the barrel being at the center of the movement;
en ce que le tambour de barillet (13 ; 63) est monté sur le bâti du mouvement de manière à être rotatif dans un sens unique de rotation, ledit sens unique entraînant un remontage du barillet (3 ; 53); et en ce que la masse oscillante (7 ; 57) et le tambour de barillet (13 ; 63) sont agencés de manière à être solidaires l’un de l’autre lorsque la masse oscillante tourne dans ledit sens unique de rotation. in that the barrel drum (13; 63) is mounted on the frame of the movement so as to be rotatable in a single direction of rotation, said single direction causing the barrel (3; 53) to be wound up; and in that the oscillating mass (7; 57) and the barrel drum (13; 63) are arranged to be integral with each other when the oscillating mass rotates in said one direction of rotation.
2. Mouvement de montre conforme à la revendication 1 , caractérisé en ce que le dispositif de pivotement (5) est agencé de manière que la masse oscillante (7) soit libre de tourner autour du barillet (3) dans ledit sens unique de rotation et en sens inverse, et en ce que la masse oscillante (7) et le tambour de barillet (13) sont agencés pour être débrayés l’un de l’autre lorsque la masse oscillante tourne dans le sens opposé au dit sens unique de rotation. 2. Watch movement according to claim 1, characterized in that the pivoting device (5) is arranged so that the oscillating mass (7) is free to rotate around the barrel (3) in said single direction of rotation and in the opposite direction, and in that the mass oscillating (7) and the barrel drum (13) are arranged to be disengaged from each other when the oscillating mass rotates in the direction opposite to said single direction of rotation.
3. Mouvement de montre conforme à la revendication 1 , caractérisé en ce que la masse oscillante (57) et le tambour de barillet (63) sont agencés de manière à être solidaires l’un de l’autre en permanence, la masse oscillante étant agencée de manière être rotative seulement dans ledit un sens unique de rotation. 3. Watch movement according to claim 1, characterized in that the oscillating mass (57) and the barrel drum (63) are arranged so as to be permanently integral with one another, the oscillating mass being arranged to be rotatable only in said one direction of rotation.
4. Mouvement de montre conforme à la revendication 2, caractérisé en ce que le dispositif de pivotement (5) est constitué par un roulement à billes comportant trois bagues concentriques, une première des trois bagues jouant le rôle de tambour de barillet (13), une deuxième (14) des trois bagues étant fixée au bâti du mouvement, et la troisième bague (15) portant la masse oscillante (7), et en ce qu’il comporte des moyens pour engendrer deux couplages unidirectionnels entre la première bague (13), d’une part, et respectivement la deuxième bague (14) et la troisième bague (15), d’autre part. 4. Watch movement according to claim 2, characterized in that the pivoting device (5) is constituted by a ball bearing comprising three concentric rings, a first of the three rings playing the role of barrel drum (13), a second (14) of the three rings being fixed to the frame of the movement, and the third ring (15) carrying the oscillating weight (7), and in that it comprises means for generating two unidirectional couplings between the first ring (13) ), on the one hand, and respectively the second ring (14) and the third ring (15), on the other hand.
5. Mouvement de montre conforme à la revendication 3, caractérisé en ce que le dispositif de pivotement (55) est constitué par un roulement à billes comportant deux bagues concentriques (64, 65), une première des deux bagues (64) étant fixée au bâti du mouvement, et la deuxième bague (65) portant la masse oscillante (57) et le tambour de barillet (63), et en ce qu’il comporte des moyens pour engendrer un couplage unidirectionnel entre la première et la deuxième bague. 5. Watch movement according to claim 3, characterized in that the pivoting device (55) consists of a ball bearing comprising two concentric rings (64, 65), a first of the two rings (64) being fixed to the frame of the movement, and the second ring (65) carrying the oscillating weight (57) and the barrel drum (63), and in that it comprises means for generating a unidirectional coupling between the first and the second ring.
6. Mouvement de montre conforme à la revendication 5, caractérisé en ce que les moyens pour engendrer un couplage unidirectionnel entre la première et la deuxième bague comprennent une denture en scie formée sur une des bagues et au moins un cliquet solidaire de l’autre bague et agencé pour coopérer avec la denture en scie. 6. Watch movement according to claim 5, characterized in that the means for generating a unidirectional coupling between the first and the second ring comprise saw teeth formed on one of the rings and at least one pawl integral with the other ring. and arranged to cooperate with the saw toothing.
7. Mouvement de montre conforme à la revendication 5, caractérisé en ce que le roulement à billes (55) est un roulement à billes unidirectionnel. 7. Watch movement according to claim 5, characterized in that the ball bearing (55) is a unidirectional ball bearing.
8. Mouvement de montre conforme à la revendication 4, caractérisé en ce que les moyens pour engendrer deux couplages unidirectionnels entre la première bague (13), d’une part, et respectivement la deuxième bague (14) et la troisième bague (15), d’autre part, comprennent une denture en scie (17) formée sur la première bague8. Watch movement according to claim 4, characterized in that the means for generating two unidirectional couplings between the first ring (13), on the one hand, and respectively the second ring (14) and the third ring (15) , on the other hand, comprise a saw toothing (17) formed on the first ring
(13) et deux cliquets (19, 21 ) solidaire respectivement de la deuxième(13) and two pawls (19, 21) respectively secured to the second
(14) et de la troisième (15) bague, les deux cliquets étant agencés pour coopérer avec la denture en scie (17). (14) and the third ring (15), the two pawls being arranged to cooperate with the saw toothing (17).
9. Mouvement de montre conforme à l’une quelconque des revendications précédentes, caractérisé en ce qu’il comporte un rouage de finissage actionné par la bonde (9 ; 59) du barillet (3 ; 53), et en ce que le rouage de finissage est agencé de manière que la bonde tourne à raison d’un tour par heure lors de la marche du mouvement. 9. Watch movement according to any one of the preceding claims, characterized in that it comprises a finishing gear train actuated by the plug (9; 59) of the barrel (3; 53), and in that the gear train finishing is arranged so that the plug rotates at a rate of one revolution per hour during the running of the movement.
EP20721316.6A 2019-05-17 2020-04-23 Watch movement with automatic windup Pending EP3969964A1 (en)

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EP19175036.3A EP3739393A1 (en) 2019-05-17 2019-05-17 Self-winding watch movement
PCT/IB2020/053843 WO2020234665A1 (en) 2019-05-17 2020-04-23 Watch movement with automatic windup

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EP3969964A1 true EP3969964A1 (en) 2022-03-23

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EP19175036.3A Withdrawn EP3739393A1 (en) 2019-05-17 2019-05-17 Self-winding watch movement
EP20721316.6A Pending EP3969964A1 (en) 2019-05-17 2020-04-23 Watch movement with automatic windup

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP19175036.3A Withdrawn EP3739393A1 (en) 2019-05-17 2019-05-17 Self-winding watch movement

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EP (2) EP3739393A1 (en)
WO (1) WO2020234665A1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH72648A (en) * 1915-10-16 1916-11-16 Schild & Co Long-life running watch movement
CH143443A (en) * 1929-11-04 1930-11-15 Philippe Jaccard Rene Timepiece whose winding takes place automatically.
CH382658A (en) * 1962-06-07 1964-06-15 Ancienne Manufacture D Horloge Ball swivel device
CH458213A (en) 1965-06-15 1968-02-29 Patek Philippe Sa Self-winding watch movement
CH694025A5 (en) 2000-03-17 2004-06-15 Soprod S A Coupling device for converting a rotational movement in both directions by a movement in one direction.
CH699325A2 (en) * 2008-08-14 2010-02-15 Temps Fab Du Movement timepiece a device for winding board.

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WO2020234665A1 (en) 2020-11-26
EP3739393A1 (en) 2020-11-18

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