EP4336275A1 - Case for a timepiece comprising an external rotating bezel controlling an internal display mobile - Google Patents

Case for a timepiece comprising an external rotating bezel controlling an internal display mobile Download PDF

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Publication number
EP4336275A1
EP4336275A1 EP22194713.8A EP22194713A EP4336275A1 EP 4336275 A1 EP4336275 A1 EP 4336275A1 EP 22194713 A EP22194713 A EP 22194713A EP 4336275 A1 EP4336275 A1 EP 4336275A1
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EP
European Patent Office
Prior art keywords
rotation
box
gear
rotating bezel
teeth
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
EP22194713.8A
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German (de)
French (fr)
Inventor
Huy Van Tran
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.)
Ball Watch Co SA
Original Assignee
Ball Watch Co SA
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 Ball Watch Co SA filed Critical Ball Watch Co SA
Priority to EP22194713.8A priority Critical patent/EP4336275A1/en
Priority to PCT/EP2023/073305 priority patent/WO2024052135A1/en
Publication of EP4336275A1 publication Critical patent/EP4336275A1/en
Pending legal-status Critical Current

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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
    • G04B19/00—Indicating the time by visual means
    • G04B19/28—Adjustable guide marks or pointers for indicating determined points of time
    • G04B19/283—Adjustable guide marks or pointers for indicating determined points of time on rotatable rings, i.e. bezel
    • 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
    • G04B19/00—Indicating the time by visual means
    • G04B19/06—Dials
    • G04B19/18—Graduations on the crystal or glass, on the bezel, or on the rim

Definitions

  • the present invention relates to a case, for a timepiece, comprising a middle part carrying a bidirectional rotating bezel, arranged outside the middle part, as well as a drive member, arranged inside the middle part and intended to ensure the driving of a display mobile, the middle part also carrying a transmission device comprising a first reference, arranged in permanent connection with the rotating bezel, and a second reference, arranged in permanent connection with the organ of 'training.
  • the present invention preferably relates to such a box in which the external rotating bezel can be used to control the movements of a rotating flange arranged inside the box.
  • the invention also relates to a timepiece comprising such a box.
  • the patent FR 1600860 dating from the late 1960s , describes for example such a box, in which a first toothed gear is arranged in permanent engagement with an external rotating bezel and a second toothed gear is arranged in permanent engagement with a rotating flange positioned in the box.
  • Each return is integral with a shaft, the two shafts being arranged in the extension of one another, being made integral with one another in rotation.
  • any rotation of the rotating bezel, in one direction or the other causes a rotation of the rotating flange, in the same direction of rotation, via the two references and their shafts.
  • none A possible technical solution which would allow independent movements between the bezel and the flange is neither disclosed nor even suggested.
  • a box, for a timepiece, of original construction comprising an internal display member capable of being controlled by manipulation of an external control member, by the implementation a kinematic connection provided through the box which is both safe, both from the points of view of handling and ergonomics as well as sealing, in particular when such a construction allows the watchmaker to have new functionalities.
  • a main aim of the present invention is to propose an alternative construction of a box, for a timepiece, comprising a device making it possible to control the movements of an internal display member, by manipulating a control member external, with excellent ergonomics, without there being any impact on its aesthetic appearance, its size, or its waterproofness.
  • the rotating bezel can be manipulated, in the first direction of rotation of the first reference, to modify the angular orientation of the display member in the box, in a manner similar to previous boxes.
  • the angular orientation of the rotating bezel with reference to the middle part, can be modified without impact on that of the internal display mobile, when its direction of rotation corresponds to the second direction of rotation of the first return. Consequently, it becomes possible to actually have two distinct pieces of information displayed, on the one hand, by the external rotating bezel and, on the other hand, by the display member intended to be housed in the box, which This is not achievable with the previous constructions cited above.
  • the transmission device comprises a connecting member capable of moving between a first, engaged position, in which it tends to be held by the action of an elastic member and in which it establishes the kinematic connection between the first and second transmissions, and a second position, disengaged, towards which it can be moved to interrupt the kinematic connection, overcoming the action of the elastic member, under the effect of a rotation of the first transmission in the second direction of rotation.
  • the transmission device comprises a tube integral with the first return and having a portion of non-circular section of which the connecting member is integral in rotation, the latter comprising teeth on the edge at saw teeth capable of meshing with teeth on the edge of saw teeth secured to the second return in the engaged position, the teeth on the edge sliding one over the other, in a back and forth movement of the connecting member along the tube between its engaged and disengaged positions, when the first return is driven in the second direction of rotation.
  • the tube to be arranged to be able to rotate on itself through a socket driven into a hole made in the band of the middle part and, more preferably, for at least one groove to be provided on the tube, a seal being arranged in the groove being slightly compressed against the socket to ensure the tightness of the passage through the latter. Since the seal only undergoes one type of stress, linked to the relative rotation between the tube and the socket, it can have good stability in use and guarantee an excellent level of sealing over a long service life. use.
  • the drive member is a crown having teeth arranged in engagement with an internal indexing spring shaped to allow rotation of the drive member only when the first return is driven in the first direction of rotation.
  • the box also includes an external indexing spring arranged to define discrete angular orientations of the rotating bezel with reference to the middle part.
  • the display mobile can be provided as a flange that the box includes, pivoted at least indirectly on the middle part depending on the movements of the drive member.
  • the invention also relates to a timepiece comprising a box having all or part of the characteristics which have just been exposed.
  • FIG. 1 represents a simplified cross-sectional view of a timepiece 1 according to a preferred embodiment of the invention, that is to say a timepiece 1 comprising a box 2 meeting the characteristics of the invention .
  • the cut is made in such a way that its plane passes through the 9 o'clock and 3 o'clock positions (according to the usual way of designating positions on the dial of a timepiece, based on the current time indications).
  • the box 2 comprises, in a conventional manner, a middle part 4 closed, on the one hand, by a bottom 6 and, on the other hand, by a glass 8, positioned here in support against a positioning ring 10, itself in support against a shoulder of the middle part 4.
  • the back 6 is screwed and comprises a transparent portion 12, for example made of sapphire, in a non-limiting illustrative manner.
  • a covering ring 14 is arranged around the band of the middle part 4 to hide different construction elements.
  • the middle part 4 is surmounted by a rotating bezel 16 made here in two main parts, a first part 18 for mounting on the middle part 4, held on the latter by means of a spring 20 housed in a groove of the middle part 4, and a second part 22 carrying indications relating to information to be displayed.
  • the box comprises a display member here in the form of a rotating flange 24, preferably non-limitatively, which is made directly integral with a drive member 26 intended to control its movements, that - this here presenting the shape of a toothed crown for non-limiting illustrative purposes.
  • a different construction could be provided, for example a connection by gear or by friction between the drive member 26 and the flange 24.
  • the drive member 26 is retained axially on the middle part 4 by being placed on an additional shoulder of the latter and being surmounted by the positioning ring 10.
  • Various information can be displayed by the rotating bezel 16, on the one hand, and by the rotating flange 24, on the other hand, whether this information is linked or independent.
  • the trim ring 14 and the band of the middle part 4 comprise a first through hole at 3 o'clock, defining a passage for a conventional time setting device, including in particular a time setting crown 28, such as illustrated on half of the figure 1 located to the right of the center of box 2.
  • the time setting crown 28 is intended to be connected to a watch movement 30, housed in box 2 via a casing circle 32.
  • the middle part 4 carries a first internal indexing spring 34 intended to cooperate with the drive member 26, in particular to define discrete angular orientations of the rotating flange 24.
  • the middle part 4 also carries a second external indexing spring 36 intended to cooperate with teeth of the first part 18 of the rotating bezel 16 to define discrete angular orientations of the latter.
  • the band of the middle part 4 comprises a second through hole defining a passage for a transmission device 38 which will be described in more detail below, in relation to the figures 2 to 4 .
  • the transmission device is arranged in the 9 o'clock position here, for non-limiting purposes of illustration, and those skilled in the art will not encounter any particular difficulty in arranging it in another position without departing from the scope of the present invention such as defined by the appended claims.
  • FIG. 2 represents a simplified perspective view of a construction detail of the box 2 according to the preferred embodiment of the present invention.
  • figure 2 represents the first part 18 of the rotating bezel 16, with its teeth, the drive member 26, the internal 34 and external 36 indexing springs, as well as the transmission device 38, and it allows us to better understand how these different components interact with each other.
  • the transmission device 38 comprises a first gear 40 arranged in engagement with the teeth of the first part 18 of the rotating bezel 16, as well as a second gear 42 arranged in engagement with the teeth of the drive member 26.
  • each of the indexing springs 34, 36 is arranged to cooperate with the teeth of the member with which it is associated.
  • Each of the indexing springs 34, 36 has an opening to allow the arrangement of the transmission device 38 near the two teeth with which it cooperates.
  • the internal indexing spring 34 comprises a plurality of curved blades 44, the end of which is straight and cooperates with the teeth of the drive member 26.
  • the indexing spring internal 34 ensures that the drive member 26 can only rotate in one direction of rotation, namely the direction of clockwise rotation in the view of the figure 2 , as indicated by the arrow Fi.
  • the external indexing spring 36 comprises, for its part, a plurality of curved blades 46, the end of which is substantially V-shaped and cooperates with the teeth of the first part 18 of the rotating bezel 16.
  • the spring external indexing device 36 authorizes the rotation of the rotating bezel 16 in both directions of rotation, as indicated by the arrow Fe.
  • FIG. 3 represents a simplified and partially hidden perspective view of the transmission device 38, allowing a better understanding how it behaves depending on the direction of rotation of the rotating bezel 16.
  • the first reference 40 is integral with a tube having a first portion 50, of generally cylindrical shape and in which two grooves 52 are provided to accommodate O-ring seals (visible on the figure 1 ), a second portion 54, cylindrical, on which the second reference 42 is freely engaged, as well as a third portion 56, of non-circular section, square here, on which a connecting member 58 is engaged, through its central opening of substantially complementary shape.
  • the connecting member 58 is integral in rotation with the tube, while being able to slide on its third portion 56.
  • the internal end of the tube is provided with a bore with which a screw 60 cooperates to define a stop at this end of the tube.
  • An elastic member 62 here having the shape of a helical spring for non-limiting purposes of illustration, is engaged on the third portion 56 of the tube, being arranged to bear against the connecting member 58 and against the screw 60.
  • the elastic member 62 exerts a force on the connecting member 58 tending to keep it resting against the second return 42, as illustrated in the Figure 3 .
  • FIG. 4 represents a simplified perspective view of the transmission member 38, in a configuration different from that illustrated in the Figure 3 .
  • the second reference 42 comprises a toothing on edge 64 with saw teeth intended to cooperate with a toothing on edge 66 with saw teeth of the connecting member 58. More precisely, the teeth on edge 64, 66 are arranged to cooperate with each other when the first return 40 is driven in the direction of clockwise rotation, when it is observed in a direction going from the outside towards the inside of the box 2.
  • the connecting member 58 pivots then in the same direction and the right flanks of its edge teeth 66 exert pressure on the right flanks of the edge teeth 64 of the second return 42, thus causing the latter to rotate in the same direction of rotation, and therefore the rotation of the rotating flange 24, via its drive member 26, in the direction of clockwise rotation in the view of the figure 2 (direction indicated by the arrow Fi).
  • the connecting member 58 is capable of moving between an engaged position, in which the two teeth on the edge 64, 66 are engaged, and a disengaged position, in which the teeth on the edge 64, 66 slide one on the other, with a back-and-forth movement of the connecting member 58 along the third portion 56 of the tube, without rotating the second reference 42, the latter maintaining its constant angular orientation.
  • These positions of the connecting member 58 are associated with two respective operating modes of the transmission device 38, an engaged mode, in which a kinematic connection is established between the first and second transmissions 40, 42 to rotate the second in response to a rotation of the first in a first predefined direction of rotation, and a disengaged mode, in which this kinematic connection is interrupted, the rotation of the first gear 40 in the opposite direction of rotation not causing the rotation of the second gear 42.
  • a socket 70 is arranged around the first portion 50 of the tube, between the first and second references 40, 42, this socket 70 being intended to be driven into a hole made in the band of the middle part 4.
  • the internal wall of the sleeve 70 defines a support surface for the O-ring seals arranged on the first portion 50 of the tube, by compressing them slightly in order to ensure the sealing of the passage which defines the interior of the socket 70. Thanks to this construction, only one type of stress is applied to the O-ring seals in use, thus guaranteeing their effectiveness and good performance over time.
  • the implementation of the present invention is not limited to certain characteristics specifically described and/or illustrated, in particular the nature of the internal display member driven from the rotating bezel (this display member being able to be directly carried by the case, as described, or, alternatively, by the watch movement housed in the case), the nature of the connections between the references and the rotating bezel and the drive member (it is in particular possible to replace the gears by friction), or even the shapes specifically illustrated and described for the components of the transmission device and the indexing springs of the rotating bezel and the drive member of the internal display mobile.
  • a rotating bezel bidirectional can rotate an internal display member in a predefined direction of rotation and rotate freely in the opposite direction of rotation, without driving the internal display mobile.
  • a rotating bezel bidirectional can rotate an internal display member in a predefined direction of rotation and rotate freely in the opposite direction of rotation, without driving the internal display mobile.
  • the kinematic connection includes an additional reference allowing the respective directions of rotation of the rotating bezel and the internal display mobile to be reversed.
  • the second return slides on the tube, the connecting member then being advantageously fixed (alternatively, the corresponding teeth on the edge could be provided directly on a portion of the tube for example).
  • the teeth of the drive member are sufficiently wide for the second return to remain engaged with it in its two extreme positions.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)

Abstract

L'invention concerne une boite (2), pour une pièce d'horlogerie (1), comportant une lunette (16) tournante bidirectionnelle externe, un organe d'entrainement (26) interne, ainsi qu'un dispositif de transmission (38) comprenant un premier renvoi (40), en liaison permanente avec la lunette tournante (16), et un deuxième renvoi (42), en liaison permanente avec l'organe d'entrainement (26),
le dispositif de transmission (38) étant susceptible de présenter deux modes de fonctionnement:
- un mode embrayé, dans lequel une liaison cinématique est établie entre les premier et deuxième renvois (40, 42), toute rotation du premier renvoi (40) dans le premier sens de rotation étant transmise au deuxième renvoi (42), et
- un mode débrayé, dans lequel la liaison cinématique est interrompue, le deuxième renvoi (42) maintenant son orientation angulaire en cas de rotation du premier renvoi (40) dans le deuxième sens de rotation.

Figure imgaf001
The invention relates to a box (2), for a timepiece (1), comprising an external bidirectional rotating bezel (16), an internal drive member (26), as well as a transmission device (38). comprising a first reference (40), in permanent connection with the rotating bezel (16), and a second reference (42), in permanent connection with the drive member (26),
the transmission device (38) being capable of having two operating modes:
- an engaged mode, in which a kinematic connection is established between the first and second transmissions (40, 42), any rotation of the first transmission (40) in the first direction of rotation being transmitted to the second transmission (42), and
- a disengaged mode, in which the kinematic connection is interrupted, the second gear (42) maintaining its angular orientation in the event of rotation of the first gear (40) in the second direction of rotation.
Figure imgaf001

Description

Domaine techniqueTechnical area

La présente invention concerne une boite, pour une pièce d'horlogerie, comportant une carrure portant une lunette tournante bidirectionnelle, agencée à l'extérieur de la carrure, ainsi qu'un organe d'entrainement, agencé à l'intérieur de la carrure et destiné à assurer l'entrainement d'un mobile d'affichage, la carrure portant également un dispositif de transmission comprenant un premier renvoi, agencé en liaison permanente avec la lunette tournante, et un deuxième renvoi, agencé en liaison permanente avec l'organe d'entrainement.The present invention relates to a case, for a timepiece, comprising a middle part carrying a bidirectional rotating bezel, arranged outside the middle part, as well as a drive member, arranged inside the middle part and intended to ensure the driving of a display mobile, the middle part also carrying a transmission device comprising a first reference, arranged in permanent connection with the rotating bezel, and a second reference, arranged in permanent connection with the organ of 'training.

Plus précisément, la présente invention concerne préférablement une telle boite dans laquelle la lunette tournante externe peut être mise à profit pour commander les déplacements d'un réhaut tournant agencé à l'intérieur de la boite.More precisely, the present invention preferably relates to such a box in which the external rotating bezel can be used to control the movements of a rotating flange arranged inside the box.

L'invention concerne également une pièce d'horlogerie comportant une telle boite.The invention also relates to a timepiece comprising such a box.

Etat de la techniqueState of the art

Des boites pour pièces d'horlogerie répondant aux caractéristiques ci-dessus sont déjà connues dans l'état de la technique.Boxes for timepieces meeting the above characteristics are already known in the state of the art.

Ainsi, le brevet FR 1600860, datant de la fin des années 1960 , décrit par exemple une telle boite, dans laquelle un premier renvoi denté est agencé en prise permanente avec une lunette tournante externe et un deuxième renvoi denté est agencé en prise permanente avec un réhaut tournant positionné dans la boite. Chaque renvoi est solidaire d'un arbre, les deux arbres étant agencés dans le prolongement l'un de l'autre, en étant rendus solidaires l'un de l'autre en rotation. Ainsi, toute rotation de la lunette tournante, dans un sens ou dans l'autre, entraine une rotation du réhaut tournant, dans le même sens de rotation, par l'intermédiaire des deux renvois et de leurs arbres. Ce brevet mentionne la possibilité de mettre en oeuvre des vitesses angulaires différentes entre la lunette et le réhaut, voire des déplacements indépendants de l'un et de l'autre. Toutefois, aucune éventuelle solution technique qui permettrait d'autoriser des déplacements indépendants entre la lunette et le réhaut n'est ni divulguée, ni même suggérée.Thus, the patent FR 1600860, dating from the late 1960s , describes for example such a box, in which a first toothed gear is arranged in permanent engagement with an external rotating bezel and a second toothed gear is arranged in permanent engagement with a rotating flange positioned in the box. Each return is integral with a shaft, the two shafts being arranged in the extension of one another, being made integral with one another in rotation. Thus, any rotation of the rotating bezel, in one direction or the other, causes a rotation of the rotating flange, in the same direction of rotation, via the two references and their shafts. This patent mentions the possibility of implementing different angular speeds between the bezel and the flange, or even independent movements of one and the other. However, none A possible technical solution which would allow independent movements between the bezel and the flange is neither disclosed nor even suggested.

Différentes constructions alternatives ont également été proposées plus récemment pour entrainer un réhaut en rotation. Par exemple, la demande de brevet EP 2902853 A1 propose une construction (déjà suggérée dans le brevet cité ci-dessus) portant sur la mise en oeuvre de liaisons par friction entre les renvois reliés respectivement à une lunette tournante et à un réhaut agencé dans la boite correspondante. Par ailleurs, le brevet EP 3123251 B1 divulgue une construction permettant d'entrainer un réhaut par l'intermédiaire d'une couronne de commande externe, agencée sur la boite de la montre correspondante en plus de la couronne habituelle de mise à l'heure. L'invention présentée dans ce document réside dans la mise en oeuvre d'une liaison "hybride" entre un joint de friction, solidaire en rotation de la couronne de commande externe, et une denture de chant, ménagée sur le réhaut, censée procurer une meilleure efficacité que les liaisons par engrenage ou par friction déjà connues.Different alternative constructions have also been proposed more recently to cause a rotating flange. For example, the request for patent EP 2902853 A1 proposes a construction (already suggested in the patent cited above) relating to the implementation of friction connections between the references connected respectively to a rotating bezel and to a flange arranged in the corresponding box. Furthermore, the patent EP 3123251 B1 discloses a construction making it possible to drive a flange via an external control crown, arranged on the case of the corresponding watch in addition to the usual time-setting crown. The invention presented in this document lies in the implementation of a "hybrid" connection between a friction joint, integral in rotation with the external control crown, and an edge tooth, provided on the flange, supposed to provide a better efficiency than already known gear or friction connections.

Ainsi, il apparait de ce qui précède que les recherches récentes, dans le domaine des boites comprenant un mobile d'affichage interne commandé par un organe de commande externe à la boite, ont porté sur l'amélioration de la transmission entre l'organe de commande et le mobile d'affichage, notamment la démultiplication de la liaison ou sa qualité, par la mise en oeuvre préférée d'une friction, voire son étanchéité. En effet, l'étanchéité des passages ménagés au travers d'une boite de montre pour l'établissement d'une liaison cinématique entre deux organes, dont l'un est situé à l'intérieur et l'autre à l'extérieur, est un problème bien connu des fabricants de boites de montres. Aussi, le besoin existe toujours de pouvoir disposer d'une boite, pour pièce d'horlogerie, de construction originale comportant un organe d'affichage interne susceptible d'être commandé par manipulation d'un organe de commande externe, par la mise en œuvre d'une liaison cinématique ménagée au travers de la boite à la fois sûre, tant des points de vue de la manipulation et de l'ergonomie que de l'étanchéité, en particulier lorsqu'une telle construction permet à l'horloger de disposer de fonctionnalités nouvelles.Thus, it appears from the above that recent research, in the field of boxes comprising an internal display unit controlled by a control member external to the box, has focused on improving the transmission between the display unit. control and the display mobile, in particular the reduction of the connection or its quality, by the preferred implementation of friction, or even its sealing. Indeed, the sealing of the passages made through a watch case for the establishment of a kinematic connection between two organs, one of which is located inside and the other outside, is a problem well known to watch case manufacturers. Also, the need still exists to be able to have a box, for a timepiece, of original construction comprising an internal display member capable of being controlled by manipulation of an external control member, by the implementation a kinematic connection provided through the box which is both safe, both from the points of view of handling and ergonomics as well as sealing, in particular when such a construction allows the watchmaker to have new functionalities.

Divulgation de l'inventionDisclosure of the invention

Un but principal de la présente invention est de proposer une construction alternative d'une boite, pour une pièce d'horlogerie, comprenant un dispositif permettant de commander les déplacements d'un organe d'affichage interne, par manipulation d'un organe de commande externe, avec une excellente ergonomie, sans pour autant qu'il y ait un impact sur son aspect esthétique, son encombrement, ou son étanchéité.A main aim of the present invention is to propose an alternative construction of a box, for a timepiece, comprising a device making it possible to control the movements of an internal display member, by manipulating a control member external, with excellent ergonomics, without there being any impact on its aesthetic appearance, its size, or its waterproofness.

A cet effet, la présente invention concerne plus particulièrement une boite, pour une pièce d'horlogerie, du type indiqué plus haut, caractérisée par le fait
que le dispositif de transmission soit susceptible de présenter deux modes de fonctionnement distincts:

  • un mode embrayé, associé à un premier sens de rotation du premier renvoi, dans lequel une liaison cinématique est établie entre les premier et deuxième renvois, toute rotation du premier renvoi dans le premier sens de rotation étant transmise au deuxième renvoi, et
  • un mode débrayé, associé au deuxième sens de rotation du premier renvoi, dans lequel la liaison cinématique est interrompue, le deuxième renvoi maintenant son orientation angulaire en cas de rotation du premier renvoi dans le deuxième sens de rotation.
For this purpose, the present invention relates more particularly to a box, for a timepiece, of the type indicated above, characterized by the fact
that the transmission device is capable of presenting two distinct modes of operation:
  • an engaged mode, associated with a first direction of rotation of the first gear, in which a kinematic connection is established between the first and second gears, any rotation of the first gear in the first direction of rotation being transmitted to the second gear, and
  • a disengaged mode, associated with the second direction of rotation of the first gear, in which the kinematic connection is interrupted, the second gear maintaining its angular orientation in the event of rotation of the first gear in the second direction of rotation.

Ainsi, la lunette tournante peut être manipulée, dans le premier sens de rotation du premier renvoi, pour modifier l'orientation angulaire de l'organe d'affichage dans la boite, de manière similaire aux boites antérieures. Toutefois, grâce aux caractéristiques spécifiques de la présente invention, l'orientation angulaire de la lunette tournante, en référence à la carrure, peut être modifiée sans impact sur celle du mobile d'affichage interne, lorsque son sens de rotation correspond au deuxième sens de rotation du premier renvoi. Par conséquent, il devient possible d'avoir réellement deux informations distinctes affichées, d'une part, par la lunette tournante externe et, d'autre part, par l'organe d'affichage destiné à être logé dans la boite, ce qui n'est pas réalisable avec les constructions antérieures citées plus haut. Ces caractéristiques particulières de l'invention permettent non seulement de se passer d'une couronne de commande externe dédiée à la manipulation de l'organe d'affichage interne, par exemple un réhaut, mais elles permettent également de conférer une apparence à la boite qui reste identique à celle que présentent les boites dans lesquelles la lunette tournante et l'organe d'affichage interne ne sont pas indépendants l'un de l'autre.Thus, the rotating bezel can be manipulated, in the first direction of rotation of the first reference, to modify the angular orientation of the display member in the box, in a manner similar to previous boxes. However, thanks to the specific characteristics of the present invention, the angular orientation of the rotating bezel, with reference to the middle part, can be modified without impact on that of the internal display mobile, when its direction of rotation corresponds to the second direction of rotation of the first return. Consequently, it becomes possible to actually have two distinct pieces of information displayed, on the one hand, by the external rotating bezel and, on the other hand, by the display member intended to be housed in the box, which This is not achievable with the previous constructions cited above. These particular characteristics of the invention not only make it possible to do without an external control crown dedicated to the manipulation of the internal display member, for example a flange, but they also make it possible to give an appearance to the box which remains identical to that presented by boxes in which the rotating bezel and the internal display member are not independent of each other.

De manière préférée, on peut prévoir que le dispositif de transmission comporte un organe de liaison susceptible de se déplacer entre une première position, embrayée, dans laquelle il tend à être maintenu par l'action d'un organe élastique et dans laquelle il établit la liaison cinématique entre les premier et deuxième renvois, et une deuxième position, débrayée, vers laquelle il peut être déplacé pour interrompre la liaison cinématique, en surmontant l'action de l'organe élastique, sous l'effet d'une rotation du premier renvoi dans le deuxième sens de rotation.Preferably, it can be provided that the transmission device comprises a connecting member capable of moving between a first, engaged position, in which it tends to be held by the action of an elastic member and in which it establishes the kinematic connection between the first and second transmissions, and a second position, disengaged, towards which it can be moved to interrupt the kinematic connection, overcoming the action of the elastic member, under the effect of a rotation of the first transmission in the second direction of rotation.

Plus particulièrement, on peut préférablement prévoir dans ce cas que le dispositif de transmission comporte un tube solidaire du premier renvoi et présentant une portion de section non-circulaire dont l'organe de liaison est solidaire en rotation, ce dernier comprenant une denture sur chant à dents de scie susceptible d'engrener avec une denture sur chant à dents de scie solidaire du deuxième renvoi dans la position embrayée, les dentures sur chant glissant l'une sur l'autre, dans un mouvement de va-et-vient de l'organe de liaison le long du tube entre ses positions embrayée et débrayée, lorsque le premier renvoi est entrainé dans le deuxième sens de rotation.More particularly, it can preferably be provided in this case that the transmission device comprises a tube integral with the first return and having a portion of non-circular section of which the connecting member is integral in rotation, the latter comprising teeth on the edge at saw teeth capable of meshing with teeth on the edge of saw teeth secured to the second return in the engaged position, the teeth on the edge sliding one over the other, in a back and forth movement of the connecting member along the tube between its engaged and disengaged positions, when the first return is driven in the second direction of rotation.

On obtient ainsi une construction qui est relativement compacte, en particulier suivant la direction de l'épaisseur de la boite, tout en présentant une bonne robustesse et une bonne fiabilité dans la transmission des mouvements de la lunette tournante.We thus obtain a construction which is relatively compact, in particular along the direction of the thickness of the case, while having good robustness and good reliability in the transmission of the movements of the rotating bezel.

De plus, on peut alors encore prévoir que le tube soit agencé pour pouvoir tourner sur lui-même au travers d'une douille chassée dans un trou ménagé dans la bande de la carrure et, plus préférablement, qu'au moins une gorge soit ménagée sur le tube, un joint d'étanchéité étant agencé dans la gorge en étant légèrement comprimé contre la douille pour assurer l'étanchéité du passage au travers de cette dernière. Le joint d'étanchéité ne subissant qu'un type de contraintes, liées à la rotation relative entre le tube et la douille, il peut présenter une bonne stabilité à l'utilisation et garantir un excellent niveau d'étanchéité sur une longue durée d'utilisation.In addition, we can then still provide for the tube to be arranged to be able to rotate on itself through a socket driven into a hole made in the band of the middle part and, more preferably, for at least one groove to be provided on the tube, a seal being arranged in the groove being slightly compressed against the socket to ensure the tightness of the passage through the latter. Since the seal only undergoes one type of stress, linked to the relative rotation between the tube and the socket, it can have good stability in use and guarantee an excellent level of sealing over a long service life. use.

De manière générale, on peut prévoir que l'organe d'entrainement soit une couronne présentant une denture agencée en prise avec un ressort d'indexation interne conformé pour autoriser une rotation de l'organe d'entrainement uniquement lorsque le premier renvoi est entrainé dans le premier sens de rotation.In general, it can be provided that the drive member is a crown having teeth arranged in engagement with an internal indexing spring shaped to allow rotation of the drive member only when the first return is driven in the first direction of rotation.

Par ailleurs, on peut avantageusement prévoir que la boite comporte en outre un ressort d'indexation externe agencé pour définir des orientations angulaires discrètes de la lunette tournante en référence à la carrure.Furthermore, it can advantageously be provided that the box also includes an external indexing spring arranged to define discrete angular orientations of the rotating bezel with reference to the middle part.

Selon un mode de réalisation préféré, on peut prévoir que le mobile d'affichage soit un réhaut que comporte la boite, pivoté au moins indirectement sur la carrure en fonction des déplacements de l'organe d'entrainement.According to a preferred embodiment, the display mobile can be provided as a flange that the box includes, pivoted at least indirectly on the middle part depending on the movements of the drive member.

L'invention concerne également une pièce d'horlogerie comportant une boite présentant tout ou partie des caractéristiques qui viennent d'être exposées.The invention also relates to a timepiece comprising a box having all or part of the characteristics which have just been exposed.

Brève description des dessinsBrief description of the drawings

D'autres caractéristiques et avantages de la présente invention apparaîtront plus clairement à la lecture de la description détaillée d'un mode de réalisation préféré qui suit, faite en référence aux dessins annexés donnés à titre d'exemple non limitatif et dans lesquels:

  • la figure 1 représente une vue en coupe transversale simplifiée d'une pièce d'horlogerie selon un mode de réalisation préféré de l'invention;
  • la figure 2 représente une vue en perspective simplifiée d'un détail de construction de la boite de la pièce d'horlogerie de la figure 1 ;
  • la figure 3 représente une vue en perspective simplifiée et partiellement masquée d'un autre détail de construction de la pièce d'horlogerie de la figure 1, et
  • la figure 4 représente une vue en perspective simplifiée d'un détail de la figure 2 dans une configuration spécifique d'utilisation.
Other characteristics and advantages of the present invention will appear more clearly on reading the detailed description of a preferred embodiment which follows, made with reference to the appended drawings given by way of non-limiting example and in which:
  • there figure 1 represents a simplified cross-sectional view of a timepiece according to a preferred embodiment of the invention;
  • there figure 2 represents a simplified perspective view of a construction detail of the case of the timepiece of the figure 1 ;
  • there Figure 3 represents a simplified and partially obscured perspective view of another construction detail of the timepiece of the figure 1 , And
  • there figure 4 represents a simplified perspective view of a detail of the figure 2 in a specific configuration of use.

Mode(s) de réalisation de l'inventionMode(s) of carrying out the invention

La figure 1 représente une vue en coupe transversale simplifiée d'une pièce d'horlogerie 1 selon un mode de réalisation préféré de l'invention, c'est-à-dire une pièce d'horlogerie 1 comprenant une boite 2 répondant aux caractéristiques de l'invention. La coupe est réalisée de telle manière que son plan passe par les positions 9h et 3h (selon la manière habituelle de désigner des positions sur le cadran d'une pièce d'horlogerie, en fonction des indications de l'heure courante).There figure 1 represents a simplified cross-sectional view of a timepiece 1 according to a preferred embodiment of the invention, that is to say a timepiece 1 comprising a box 2 meeting the characteristics of the invention . The cut is made in such a way that its plane passes through the 9 o'clock and 3 o'clock positions (according to the usual way of designating positions on the dial of a timepiece, based on the current time indications).

La boite 2 comprend, de manière conventionnelle, une carrure 4 fermée, d'une part, par un fond 6 et, d'autre part, par une glace 8, positionnée ici en appui contre une bague de positionnement 10, elle-même en appui contre un épaulement de la carrure 4. Il apparait de la figure 1 que le fond 6 est vissé et comprend une portion transparente 12, par exemple en saphir, de manière illustrative non limitative.The box 2 comprises, in a conventional manner, a middle part 4 closed, on the one hand, by a bottom 6 and, on the other hand, by a glass 8, positioned here in support against a positioning ring 10, itself in support against a shoulder of the middle part 4. It appears from the figure 1 that the back 6 is screwed and comprises a transparent portion 12, for example made of sapphire, in a non-limiting illustrative manner.

De manière avantageuse et optionnelle, une bague d'habillage 14 est agencée autour de la bande de la carrure 4 pour masquer différents éléments de construction.Advantageously and optionally, a covering ring 14 is arranged around the band of the middle part 4 to hide different construction elements.

Par ailleurs, la carrure 4 est surmontée d'une lunette tournante 16 réalisée ici en deux parties principales, une première partie 18 de montage sur la carrure 4, maintenue sur cette dernière par l'intermédiaire d'un ressort 20 logée dans une gorge de la carrure 4, et une deuxième partie 22 portant des indications relatives à une information à afficher.Furthermore, the middle part 4 is surmounted by a rotating bezel 16 made here in two main parts, a first part 18 for mounting on the middle part 4, held on the latter by means of a spring 20 housed in a groove of the middle part 4, and a second part 22 carrying indications relating to information to be displayed.

A l'intérieur, la boite comprend un organe d'affichage présentant ici la forme d'un réhaut 24 tournant, à titre préféré non limitatif, qui est rendu directement solidaire d'un organe d'entrainement 26 destiné à commander ses déplacements, celui-ci présentant ici la forme d'une couronne dentée à titre illustratif non limitatif. En alternative, on pourrait prévoir une construction différente, par exemple une liaison par engrenage ou par friction entre l'organe d'entrainement 26 et le réhaut 24. L'organe d'entrainement 26 est retenu axialement sur la carrure 4 en étant posé sur un épaulement supplémentaire de cette dernière et en étant surmonté par la bague de positionnement 10.Inside, the box comprises a display member here in the form of a rotating flange 24, preferably non-limitatively, which is made directly integral with a drive member 26 intended to control its movements, that - this here presenting the shape of a toothed crown for non-limiting illustrative purposes. Alternatively, a different construction could be provided, for example a connection by gear or by friction between the drive member 26 and the flange 24. The drive member 26 is retained axially on the middle part 4 by being placed on an additional shoulder of the latter and being surmounted by the positioning ring 10.

Diverses informations peuvent être affichées par la lunette tournante 16, d'une part, et par le réhaut 24 tournant, d'autre part, que ces informations soient liées ou indépendantes. A titre d'exemples non limitatifs, on pourra prévoir un affichage des jours de la semaine, d'indications liées aux marées, des minutes sur soixante minutes (notamment pour une montre de plongée), d'échelles tachymétrique et/ou pulsométrique (la lecture se faisant alors en relation avec une aiguille centrale des secondes), de noms de lieux (par exemple de villes) pour un affichage d'heures universelles, etc...Various information can be displayed by the rotating bezel 16, on the one hand, and by the rotating flange 24, on the other hand, whether this information is linked or independent. By way of non-limiting examples, we could provide a display of the days of the week, indications linked to tides, minutes over sixty minutes (notably for a diving watch), tachymetric and/or pulsometric scales (the reading then taking place in relation to a central seconds hand), names of places (for example cities) for a display of universal times, etc.

La bague d'habillage 14 et la bande de la carrure 4 comprennent un premier trou traversant à 3h, définissant un passage pour un dispositif de mise à l'heure conventionnel, comprenant notamment une couronne de mise à l'heure 28, tel qu'illustré sur la moitié de la figure 1 située à droite du centre de la boite 2. La couronne de mise à l'heure 28 est destinée à être reliée à un mouvement horloger 30, logé dans la boite 2 par l'intermédiaire d'un cercle d'encageage 32.The trim ring 14 and the band of the middle part 4 comprise a first through hole at 3 o'clock, defining a passage for a conventional time setting device, including in particular a time setting crown 28, such as illustrated on half of the figure 1 located to the right of the center of box 2. The time setting crown 28 is intended to be connected to a watch movement 30, housed in box 2 via a casing circle 32.

On constate également sur cette partie de la figure 1, que la carrure 4 porte un premier ressort d'indexation interne 34 destiné à coopérer avec l'organe d'entrainement 26, notamment pour définir des orientations angulaires discrètes du réhaut 24 tournant. La carrure 4 porte également un deuxième ressort d'indexation externe 36 destiné à coopérer avec une denture de la première partie 18 de la lunette tournante 16 pour définir des orientations angulaires discrètes de cette dernière.We also see on this part of the figure 1 , that the middle part 4 carries a first internal indexing spring 34 intended to cooperate with the drive member 26, in particular to define discrete angular orientations of the rotating flange 24. The middle part 4 also carries a second external indexing spring 36 intended to cooperate with teeth of the first part 18 of the rotating bezel 16 to define discrete angular orientations of the latter.

Il apparait de l'autre moitié (gauche) de la figure 1 que la bande de la carrure 4 comprend un deuxième trou traversant définissant un passage pour un dispositif de transmission 38 qui sera décrit plus en détail ci-dessous, en relation avec les figures 2 à 4. Le dispositif de transmission est agencé dans la position 9h ici, à titre illustratif non limitatif, et l'homme du métier ne rencontrera pas de difficulté particulière pour l'agencer dans une autre position sans pour autant sortir du cadre de la présente invention tel que défini par les revendications annexées.It appears from the other half (left) of the figure 1 that the band of the middle part 4 comprises a second through hole defining a passage for a transmission device 38 which will be described in more detail below, in relation to the figures 2 to 4 . The transmission device is arranged in the 9 o'clock position here, for non-limiting purposes of illustration, and those skilled in the art will not encounter any particular difficulty in arranging it in another position without departing from the scope of the present invention such as defined by the appended claims.

La figure 2 représente une vue en perspective simplifiée d'un détail de construction de la boite 2 selon le mode de réalisation préféré de la présente invention.There figure 2 represents a simplified perspective view of a construction detail of the box 2 according to the preferred embodiment of the present invention.

Plus précisément, la figure 2 représente la première partie 18 de la lunette tournante 16, avec sa denture, l'organe d'entrainement 26, les ressorts d'indexation interne 34 et externe 36, ainsi que le dispositif de transmission 38, et elle permet de mieux comprendre comment ces différents composants interagissent les uns avec les autres.More precisely, the figure 2 represents the first part 18 of the rotating bezel 16, with its teeth, the drive member 26, the internal 34 and external 36 indexing springs, as well as the transmission device 38, and it allows us to better understand how these different components interact with each other.

Le dispositif de transmission 38 comporte un premier renvoi 40 agencé en prise avec la denture de la première partie 18 de la lunette tournante 16, ainsi qu'un deuxième renvoi 42 agencé en prise avec la denture de l'organe d'entrainement 26.The transmission device 38 comprises a first gear 40 arranged in engagement with the teeth of the first part 18 of the rotating bezel 16, as well as a second gear 42 arranged in engagement with the teeth of the drive member 26.

Par ailleurs, il apparait également de la figure 2 comment chacun des ressorts d'indexation 34, 36 est agencé pour coopérer avec la denture de l'organe auquel il est associé. Chacun des ressorts d'indexation 34, 36 présente une ouverture pour permettre l'agencement du dispositif de transmission 38 à proximité des deux dentures avec lesquelles il coopère.Furthermore, it also appears from the figure 2 how each of the indexing springs 34, 36 is arranged to cooperate with the teeth of the member with which it is associated. Each of the indexing springs 34, 36 has an opening to allow the arrangement of the transmission device 38 near the two teeth with which it cooperates.

Il apparait également de la figure 2 que le ressort d'indexation interne 34 comporte une pluralité de lames 44 recourbées, dont l'extrémité est droite et coopère avec la denture de l'organe d'entrainement 26. Ainsi, outre son rôle d'indexation, le ressort d'indexation interne 34 permet d'assurer que l'organe d'entrainement 26 ne puisse tourner que dans un seul sens de rotation, à savoir le sens de rotation horaire sur la vue de la figure 2, comme indiqué par la flèche Fi.It also appears from the figure 2 that the internal indexing spring 34 comprises a plurality of curved blades 44, the end of which is straight and cooperates with the teeth of the drive member 26. Thus, in addition to its indexing role, the indexing spring internal 34 ensures that the drive member 26 can only rotate in one direction of rotation, namely the direction of clockwise rotation in the view of the figure 2 , as indicated by the arrow Fi.

Le ressort d'indexation externe 36 comporte, quant à lui, une pluralité de lames 46 recourbées, dont l'extrémité est sensiblement en forme de V et coopère avec la denture de la première partie 18 de la lunette tournante 16. Ainsi, le ressort d'indexation externe 36 autorise la rotation de la lunette tournante 16 dans les deux sens de rotation, comme indiqué par la flèche Fe.The external indexing spring 36 comprises, for its part, a plurality of curved blades 46, the end of which is substantially V-shaped and cooperates with the teeth of the first part 18 of the rotating bezel 16. Thus, the spring external indexing device 36 authorizes the rotation of the rotating bezel 16 in both directions of rotation, as indicated by the arrow Fe.

La figure 3 représente une vue en perspective simplifiée et partiellement masquée du dispositif de transmission 38, permettant de mieux comprendre comment il se comporte en fonction du sens de rotation de la lunette tournante 16.There Figure 3 represents a simplified and partially hidden perspective view of the transmission device 38, allowing a better understanding how it behaves depending on the direction of rotation of the rotating bezel 16.

Le premier renvoi 40 est solidaire d'un tube présentant une première portion 50, de forme générale cylindrique et dans laquelle deux gorges 52 sont ménagées pour loger des joints O-ring (visibles sur la figure 1), une deuxième portion 54, cylindrique, sur laquelle est librement engagé le deuxième renvoi 42, ainsi qu'une troisième portion 56, de section non-circulaire, carrée ici, sur laquelle est engagé un organe de liaison 58, par son ouverture centrale de forme sensiblement complémentaire. Ainsi, l'organe de liaison 58 est solidaire en rotation du tube, tout en étant apte à coulisser sur sa troisième portion 56.The first reference 40 is integral with a tube having a first portion 50, of generally cylindrical shape and in which two grooves 52 are provided to accommodate O-ring seals (visible on the figure 1 ), a second portion 54, cylindrical, on which the second reference 42 is freely engaged, as well as a third portion 56, of non-circular section, square here, on which a connecting member 58 is engaged, through its central opening of substantially complementary shape. Thus, the connecting member 58 is integral in rotation with the tube, while being able to slide on its third portion 56.

L'extrémité interne du tube est pourvue d'un alésage avec lequel coopère une vis 60 pour définir une butée à cette extrémité du tube. Un organe élastique 62, présentant ici la forme d'un ressort hélicoïdal à titre illustratif non limitatif, est engagé sur la troisième portion 56 du tube, en étant agencé en appui contre l'organe de liaison 58 et contre la vis 60. Ainsi, l'organe élastique 62 exerce une force sur l'organe de liaison 58 tendant à le maintenir en appui contre le deuxième renvoi 42, comme illustré sur la figure 3.The internal end of the tube is provided with a bore with which a screw 60 cooperates to define a stop at this end of the tube. An elastic member 62, here having the shape of a helical spring for non-limiting purposes of illustration, is engaged on the third portion 56 of the tube, being arranged to bear against the connecting member 58 and against the screw 60. Thus, the elastic member 62 exerts a force on the connecting member 58 tending to keep it resting against the second return 42, as illustrated in the Figure 3 .

La figure 4 représente une vue en perspective simplifiée de l'organe de transmission 38, dans une configuration différente de celle illustrée sur la figure 3.There Figure 4 represents a simplified perspective view of the transmission member 38, in a configuration different from that illustrated in the Figure 3 .

Il apparait plus clairement de la figure 4 que le deuxième renvoi 42 comporte une denture sur chant 64 à dents de scie destinée à coopérer avec une denture sur chant 66 à dents de scie de l'organe de liaison 58. Plus précisément, les dentures sur chant 64, 66 sont agencées pour coopérer l'une avec l'autre lorsque le premier renvoi 40 est entrainé dans le sens de rotation horaire, lorsqu'il est observé suivant une direction allant de l'extérieur vers l'intérieur de la boite 2. L'organe de liaison 58 pivote alors dans le même sens et les flancs droits de sa denture sur chant 66 exerce une pression sur les flancs droits de la denture sur chant 64 du deuxième renvoi 42, entrainant ainsi ce dernier en rotation dans le même sens de rotation, et donc la rotation du réhaut 24 tournant, par l'intermédiaire de son organe d'entrainement 26, dans le sens de rotation horaire sur la vue de la figure 2 (sens indiqué par la flèche Fi).It appears more clearly from the figure 4 that the second reference 42 comprises a toothing on edge 64 with saw teeth intended to cooperate with a toothing on edge 66 with saw teeth of the connecting member 58. More precisely, the teeth on edge 64, 66 are arranged to cooperate with each other when the first return 40 is driven in the direction of clockwise rotation, when it is observed in a direction going from the outside towards the inside of the box 2. The connecting member 58 pivots then in the same direction and the right flanks of its edge teeth 66 exert pressure on the right flanks of the edge teeth 64 of the second return 42, thus causing the latter to rotate in the same direction of rotation, and therefore the rotation of the rotating flange 24, via its drive member 26, in the direction of clockwise rotation in the view of the figure 2 (direction indicated by the arrow Fi).

Lorsque le premier renvoi 40 est entrainé dans le sens de rotation opposé (anti-horaire, tel qu'indiqué sur la figure 4), la rotation de l'organe d'entrainement 26 dans le sens opposé est empêchée du fait de l'action de l'organe d'indexation 34 interne. Dans ce cas, les flancs inclinés des dents de la denture sur chant 66 de l'organe de liaison 58 exercent une pression sur les flancs inclinés des dents de la denture sur chant 64 du deuxième renvoi 42. Dans la mesure où le deuxième renvoi 42 est bloqué dans cette situation, le seul moyen pour permettre la rotation de l'organe de liaison 58 et donc du premier renvoi 40, est en surmontant la force exercée par l'organe élastique 62 sur l'organe de liaison 58, en permettant à ce dernier de coulisser le long de la troisième portion 56 du tube, en comprimant l'organe élastique 62, comme illustré sur la figure 4.When the first return 40 is driven in the opposite direction of rotation (anti-clockwise, as indicated on the Figure 4 ), the rotation of the drive member 26 in the opposite direction is prevented due to the action of the internal indexing member 34. In this case, the inclined flanks of the teeth of the edge teeth 66 of the connecting member 58 exert pressure on the inclined flanks of the teeth of the edge teeth 64 of the second return 42. To the extent that the second return 42 is blocked in this situation, the only way to allow the rotation of the connecting member 58 and therefore of the first reference 40, is by overcoming the force exerted by the elastic member 62 on the connecting member 58, by allowing the latter to slide along the third portion 56 of the tube, compressing the elastic member 62, as illustrated in the figure 4 .

Ainsi, l'organe de liaison 58 est susceptible de se déplacer entre une position embrayée, dans laquelle les deux dentures sur chant 64, 66 sont en prise, et une position débrayée, dans laquelle les dentures sur chant 64, 66 glissent l'une sur l'autre, avec un mouvement de va-et-vient de l'organe de liaison 58 le long de la troisième portion 56 du tube, sans entrainement en rotation du deuxième renvoi 42, celui-ci maintenant son orientation angulaire constante.Thus, the connecting member 58 is capable of moving between an engaged position, in which the two teeth on the edge 64, 66 are engaged, and a disengaged position, in which the teeth on the edge 64, 66 slide one on the other, with a back-and-forth movement of the connecting member 58 along the third portion 56 of the tube, without rotating the second reference 42, the latter maintaining its constant angular orientation.

Ces positions de l'organe de liaison 58 sont associées à deux modes de fonctionnement respectifs du dispositif de transmission 38, un mode embrayé, dans lequel une liaison cinématique est établie entre les premier et deuxième renvois 40, 42 pour faire tourner le deuxième en réponse à une rotation du premier dans un premier sens de rotation prédéfini, et un mode débrayé, dans lequel cette liaison cinématique est interrompue, la rotation du premier renvoi 40 dans le sens de rotation opposé n'entrainant pas la rotation du deuxième renvoi 42.These positions of the connecting member 58 are associated with two respective operating modes of the transmission device 38, an engaged mode, in which a kinematic connection is established between the first and second transmissions 40, 42 to rotate the second in response to a rotation of the first in a first predefined direction of rotation, and a disengaged mode, in which this kinematic connection is interrupted, the rotation of the first gear 40 in the opposite direction of rotation not causing the rotation of the second gear 42.

On notera qu'une douille 70 est agencée autour de la première portion 50 du tube, entre les premier et deuxième renvois 40, 42, cette douille 70 étant destinée à être chassée dans un trou ménagé dans la bande de la carrure 4. De plus, la paroi interne de la douille 70 définit une surface d'appui pour les joints O-ring agencés sur la première portion 50 du tube, en les comprimant légèrement afin d'assurer l'étanchéité du passage que définit l'intérieur de la douille 70. Grâce à cette construction, un seul type de contrainte est appliqué aux joints O-ring en cours d'utilisation, garantissant ainsi leur efficacité et leur bonne tenue dans le temps.It will be noted that a socket 70 is arranged around the first portion 50 of the tube, between the first and second references 40, 42, this socket 70 being intended to be driven into a hole made in the band of the middle part 4. In addition , the internal wall of the sleeve 70 defines a support surface for the O-ring seals arranged on the first portion 50 of the tube, by compressing them slightly in order to ensure the sealing of the passage which defines the interior of the socket 70. Thanks to this construction, only one type of stress is applied to the O-ring seals in use, thus guaranteeing their effectiveness and good performance over time.

Sur la base de la description qui précède, on comprend comment il est possible de réaliser une boite pour pièce d'horlogerie comprenant notamment une lunette tournante externe bidirectionnelle, dont la rotation dans un sens prédéfini peut être mise à profit pour entrainer en rotation un organe d'affichage agencé à l'intérieur de la boite, uniquement lorsque la lunette est entrainée dans le sens prédéfini, tout en présentant une construction peu complexe et peu encombrante.On the basis of the preceding description, we understand how it is possible to produce a box for a timepiece including in particular a bidirectional external rotating bezel, the rotation of which in a predefined direction can be used to rotate a member display arranged inside the box, only when the bezel is driven in the predefined direction, while presenting a simple and space-saving construction.

La mise en oeuvre de la présente invention n'est pas limitée à certaines caractéristiques spécifiquement décrites et/ou illustrées, notamment la nature de l'organe d'affichage interne entrainé à partir de la lunette tournante (cet organe d'affichage pouvant être directement porté par la boite, comme décrit, ou, en alternative, par le mouvement horloger logé dans la boite), la nature des liaisons entre les renvois et la lunette tournante et l'organe d'entrainement (il est notamment possible de remplacer les engrenages par des frictions), ou encore les formes spécifiquement illustrées et décrites pour les composants du dispositif de transmission et les ressorts d'indexation de la lunette tournante et de l'organe d'entrainement du mobile d'affichage interne. En effet, l'homme du métier ne rencontrera aucune difficulté particulière pour adapter le présent enseignement à la mise en oeuvre d'une boite pour pièce d'horlogerie conforme à la présente invention, c'est-à-dire dans laquelle une lunette tournante bidirectionnelle peut entrainer en rotation un organe d'affichage interne dans un sens de rotation prédéfini et tourner librement dans le sens de rotation opposé, sans entrainer le mobile d'affichage interne. On pourra notamment imaginer des variantes pour la structure de la liaison cinématique entre la lunette tournante et le mobile d'affichage interne, sans pour autant sortir du cadre de l'invention tel que défini par les revendications annexées. Il est par exemple possible que la liaison cinématique comporte un renvoi supplémentaire permettant d'inverser les sens de rotations respectifs de la lunette tournante et du mobile d'affichage interne. Par ailleurs, il est également possible d'envisager que le deuxième renvoi coulisse sur le tube, l'organe de liaison étant alors avantageusement fixe (en alternative, la denture sur chant correspondante pourrait être ménagée directement sur une portion du tube par exemple). Dans ce cas, on pourra préférablement prévoir que la denture de l'organe d'entrainement soit suffisamment large pour le deuxième renvoi reste en prise avec lui dans ses deux positions extrêmes.The implementation of the present invention is not limited to certain characteristics specifically described and/or illustrated, in particular the nature of the internal display member driven from the rotating bezel (this display member being able to be directly carried by the case, as described, or, alternatively, by the watch movement housed in the case), the nature of the connections between the references and the rotating bezel and the drive member (it is in particular possible to replace the gears by friction), or even the shapes specifically illustrated and described for the components of the transmission device and the indexing springs of the rotating bezel and the drive member of the internal display mobile. Indeed, those skilled in the art will not encounter any particular difficulty in adapting the present teaching to the implementation of a box for a timepiece conforming to the present invention, that is to say in which a rotating bezel bidirectional can rotate an internal display member in a predefined direction of rotation and rotate freely in the opposite direction of rotation, without driving the internal display mobile. We could in particular imagine variants for the structure of the kinematic connection between the rotating bezel and the internal display mobile, without departing from the scope of the invention as defined by the appended claims. It is for example possible that the kinematic connection includes an additional reference allowing the respective directions of rotation of the rotating bezel and the internal display mobile to be reversed. Furthermore, it is also possible to envisage that the second return slides on the tube, the connecting member then being advantageously fixed (alternatively, the corresponding teeth on the edge could be provided directly on a portion of the tube for example). In this case, we can preferably provide that the teeth of the drive member are sufficiently wide for the second return to remain engaged with it in its two extreme positions.

Claims (9)

Boite (2), pour une pièce d'horlogerie (1), comportant une carrure (4) portant une lunette (16) tournante bidirectionnelle, agencée à l'extérieur de ladite carrure (4), ainsi qu'un organe d'entrainement (26), agencé à l'intérieur de ladite carrure (4) et destiné à assurer l'entrainement d'un mobile d'affichage, ladite carrure (4) portant également un dispositif de transmission (38) comprenant un premier renvoi (40), agencé en liaison permanente avec ladite lunette tournante (16), et un deuxième renvoi (42), agencé en liaison permanente avec ledit organe d'entrainement (26),
caractérisée en ce que ledit dispositif de transmission (38) est susceptible de présenter deux modes de fonctionnement distincts: - un mode embrayé, associé à un premier sens de rotation dudit premier renvoi (40), dans lequel une liaison cinématique est établie entre lesdits premier et deuxième renvois (40, 42), toute rotation dudit premier renvoi (40) dans ledit premier sens de rotation étant transmise audit deuxième renvoi (42), et - un mode débrayé, associé au deuxième sens de rotation dudit premier renvoi (40), dans lequel ladite liaison cinématique est interrompue, ledit deuxième renvoi (42) maintenant son orientation angulaire en cas de rotation dudit premier renvoi (40) dans ledit deuxième sens de rotation. Box (2), for a timepiece (1), comprising a middle part (4) carrying a bidirectional rotating bezel (16), arranged outside said middle part (4), as well as a drive member (26), arranged inside said middle part (4) and intended to ensure the driving of a display mobile, said middle part (4) also carrying a transmission device (38) comprising a first reference (40 ), arranged in permanent connection with said rotating bezel (16), and a second reference (42), arranged in permanent connection with said drive member (26),
characterized in that said transmission device (38) is capable of presenting two distinct operating modes: - an engaged mode, associated with a first direction of rotation of said first gear (40), in which a kinematic connection is established between said first and second gears (40, 42), any rotation of said first gear (40) in said first direction of rotation being transmitted to said second return (42), and - a disengaged mode, associated with the second direction of rotation of said first gear (40), in which said kinematic connection is interrupted, said second gear (42) maintaining its angular orientation in the event of rotation of said first gear (40) in said second direction of rotation. Boite (2) selon la revendication 1, caractérisée en ce que ledit dispositif de transmission (38) comporte un organe de liaison (58) susceptible de se déplacer entre une première position, embrayée, dans laquelle il tend à être maintenu par l'action d'un organe élastique (62) et dans laquelle il établit ladite liaison cinématique entre lesdits premier et deuxième renvois (40, 42), et une deuxième position, débrayée, vers laquelle il peut être déplacé pour interrompre ladite liaison cinématique, en surmontant l'action dudit organe élastique (62), sous l'effet d'une rotation dudit premier renvoi (40) dans ledit deuxième sens de rotation.Box (2) according to claim 1, characterized in that said transmission device (38) comprises a connecting member (58) capable of moving between a first position, engaged, in which it tends to be maintained by the action of an elastic member (62) and in which it establishes said kinematic connection between said first and second references (40, 42), and a second position, disengaged, towards which it can be moved to interrupt said kinematic connection, overcoming the action of said elastic member (62), under the effect of rotation of said first return (40) in said second direction of rotation. Boite (2) selon la revendication 2, caractérisée en ce que ledit dispositif de transmission (38) comporte un tube solidaire dudit premier renvoi (40) et présentant une portion (56) de section non-circulaire dont ledit organe de liaison (58) est solidaire en rotation, ce dernier comprenant une denture sur chant (66) à dents de scie susceptible d'engrener avec une denture sur chant (64) à dents de scie solidaire dudit deuxième renvoi (42) dans ladite position embrayée, lesdites dentures sur chant (64, 66) glissant l'une sur l'autre, dans un mouvement de va-et-vient dudit organe de liaison (58) le long dudit tube entre ses positions embrayée et débrayée, lorsque ledit premier renvoi (40) est entrainé dans ledit deuxième sens de rotation.Box (2) according to claim 2, characterized in that said transmission device (38) comprises a tube integral with said first return (40) and having a portion (56) of non-circular section of which said connecting member (58) is integral in rotation, the latter comprising teeth on edge (66) with sawtooth capable of meshing with edge teeth (64) with sawtooth integral with said second reference (42) in said engaged position, said edge teeth (64, 66) sliding one on the other, in a back-and-forth movement of said connecting member (58) along said tube between its engaged and disengaged positions, when said first return (40) is driven in said second direction of rotation. Boite (2) selon la revendication 3, caractérisée en ce que ledit tube est agencé pour pouvoir tourner sur lui-même au travers d'une douille (70) chassée dans un trou ménagé dans la bande de ladite carrure (4).Box (2) according to claim 3, characterized in that said tube is arranged to be able to rotate on itself through a socket (70) driven into a hole made in the band of said middle part (4). Boite (2) selon la revendication 4, caractérisée en ce qu'au moins une gorge (52) est ménagée sur ledit tube, et en ce qu'un joint d'étanchéité est agencé dans ladite gorge (52) en étant légèrement comprimé contre ladite douille (70) pour assurer l'étanchéité du passage au travers de cette dernière.Box (2) according to claim 4, characterized in that at least one groove (52) is provided on said tube, and in that a seal is arranged in said groove (52) being slightly compressed against said socket (70) to ensure the sealing of the passage through the latter. Boite (2) selon l'une des revendication 1 à 5, caractérisée en ce que ledit organe d'entrainement (26) est une couronne présentant une denture agencée en prise avec un ressort d'indexation (34) interne conformé pour autoriser une rotation dudit organe d'entrainement (26) uniquement lorsque ledit premier renvoi (40) est entrainé dans ledit premier sens de rotation.Box (2) according to one of claims 1 to 5, characterized in that said drive member (26) is a crown having teeth arranged in engagement with an internal indexing spring (34) shaped to allow rotation of said drive member (26) only when said first return (40) is driven in said first direction of rotation. Boite (2) selon l'une des revendication 1 à 6, caractérisée en ce qu'elle comporte en outre un ressort d'indexation (36) externe agencé pour définir des orientations angulaires discrètes de ladite lunette (16) tournante en référence à ladite carrure (4).Box (2) according to one of claims 1 to 6, characterized in that it further comprises an external indexing spring (36) arranged to define discrete angular orientations of said rotating bezel (16) with reference to said middle (4). Boite (2) selon l'une des revendication 1 à 7, caractérisée en ce que ledit mobile d'affichage est un réhaut (24) que comporte la boite (2), pivoté au moins indirectement sur ladite carrure (4) en fonction des déplacements dudit organe d'entrainement (26).Box (2) according to one of claims 1 to 7, characterized in that said display mobile is a flange (24) which the box (2) comprises, pivoted at least indirectly on said middle part (4) depending on the movements of said drive member (26). Pièce d'horlogerie (1) comportant une boite (2) selon l'une des revendications 1 à 8.Timepiece (1) comprising a box (2) according to one of claims 1 to 8.
EP22194713.8A 2022-09-08 2022-09-08 Case for a timepiece comprising an external rotating bezel controlling an internal display mobile Pending EP4336275A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP22194713.8A EP4336275A1 (en) 2022-09-08 2022-09-08 Case for a timepiece comprising an external rotating bezel controlling an internal display mobile
PCT/EP2023/073305 WO2024052135A1 (en) 2022-09-08 2023-08-24 Housing for a timepiece comprising an external rotating bezel controlling an internal display mobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22194713.8A EP4336275A1 (en) 2022-09-08 2022-09-08 Case for a timepiece comprising an external rotating bezel controlling an internal display mobile

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EP4336275A1 true EP4336275A1 (en) 2024-03-13

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1600860A (en) 1967-08-16 1970-08-03
EP1342131B1 (en) * 2000-12-01 2011-11-09 LVMH Swiss Manufactures SA Watch case
EP2672333A1 (en) * 2012-06-06 2013-12-11 Omega SA Rotating bezel system
US20150117163A1 (en) * 2013-10-30 2015-04-30 Richemont International S.A. Holding and indexing device for timepieces
EP2902853A1 (en) 2014-01-31 2015-08-05 Hamilton International AG Timepiece with mobile indicator controlled by a bezel
EP3123251B1 (en) 2014-03-26 2021-04-28 The Swatch Group Management Services AG Timepiece comprising a turning collar

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1600860A (en) 1967-08-16 1970-08-03
EP1342131B1 (en) * 2000-12-01 2011-11-09 LVMH Swiss Manufactures SA Watch case
EP2672333A1 (en) * 2012-06-06 2013-12-11 Omega SA Rotating bezel system
US20150117163A1 (en) * 2013-10-30 2015-04-30 Richemont International S.A. Holding and indexing device for timepieces
EP2902853A1 (en) 2014-01-31 2015-08-05 Hamilton International AG Timepiece with mobile indicator controlled by a bezel
EP3123251B1 (en) 2014-03-26 2021-04-28 The Swatch Group Management Services AG Timepiece comprising a turning collar

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