EP1513031B1 - Timepiece comprising two watch-cases able to pivot one with respect to the other - Google Patents

Timepiece comprising two watch-cases able to pivot one with respect to the other Download PDF

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Publication number
EP1513031B1
EP1513031B1 EP20040020747 EP04020747A EP1513031B1 EP 1513031 B1 EP1513031 B1 EP 1513031B1 EP 20040020747 EP20040020747 EP 20040020747 EP 04020747 A EP04020747 A EP 04020747A EP 1513031 B1 EP1513031 B1 EP 1513031B1
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EP
European Patent Office
Prior art keywords
cases
rotation
transmission part
timepiece according
moving transmission
Prior art date
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EP20040020747
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German (de)
French (fr)
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EP1513031A1 (en
Inventor
Marco Rochat
Vincent Laucella
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Montres Breguet SA
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Montres Breguet SA
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Priority claimed from EP03077820A external-priority patent/EP1513030A1/en
Application filed by Montres Breguet SA filed Critical Montres Breguet SA
Priority to EP20040020747 priority Critical patent/EP1513031B1/en
Publication of EP1513031A1 publication Critical patent/EP1513031A1/en
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    • 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
    • G04B37/00—Cases
    • G04B37/04—Mounting the clockwork in the case; Shock absorbing mountings
    • G04B37/0427—Mountings relative to pocket and wrist watches allowing a rocking movement about a hinge or any other movement

Definitions

  • the present invention relates to a timepiece comprising a box body inside which is housed a watch movement, this body having at least two distinct faces on which are arranged respectively first and second display means driven by the watch movement.
  • a timepiece comprising first and second boxes (an upper box and a lower box) pivotally mounted relative to each other about a pivot axis substantially perpendicular to the general plane of the boxes.
  • the two boxes can occupy a first closed position where the upper box is superimposed on the lower box and hides the front face of the lower box, and a second open position where the upper box is rotated relative to the lower box to discover the front face.
  • this is a timepiece where the upper box has a watch movement and associated means for displaying the time and the lower box has a compass. It will be understood that the watch movement is integrally mounted in the upper box and is completely independent of the mechanism housed in the lower box, namely the compass.
  • a general object of the present invention is to propose a solution making it possible, like previous solutions, to use a larger surface area on the timepiece to equip it with a wide range of display means, while ensuring, however, a great simplicity of handling, in particular by avoiding the need to turn the box body.
  • Another object of the present invention is to propose a solution which requires only a single watch movement which can moreover be entirely realized in mechanical form.
  • the present invention relates to a timepiece whose characteristics are set forth in claim 1.
  • the body forming the box of the timepiece thus comprises a first box, called upper box, having a front face comprising the first display means and a second box, said lower box, having a front face including the second means of display.
  • These boxes are pivotally mounted relative to each other about a pivot axis substantially perpendicular to the general plane of the boxes and can occupy a first position, said closed, where the upper box is superimposed on the lower box and mask at least partly the front face of the lower box, and a second position, said open, where the upper box is laterally pivoted relative to the lower box to discover at least a portion of the front face.
  • the watch movement comprises first and second parts respectively housed in the upper and lower boxes for driving the first and second display means, respectively, and a driving mechanism providing a link kinematic between the first and second parts of the watch movement.
  • this drive mechanism is arranged to ensure an interruption of the kinematic connection between the first and second parts of the watch movement when the boxes are brought into the open position.
  • the watch movement is subdivided into two parts which are respectively housed in the upper and lower boxes, the drive mechanism being provided to provide a kinematic connection between these two parts of the watch movement and to interrupt this kinematic connection when the boxes are brought into position. open position.
  • the drive mechanism comprises a transmission unit, of axis coinciding with the axis of pivoting of the boxes, this transmission unit comprising a first end located in the upper box and a second end located in the lower box.
  • the boxes are brought into the open position by rotation of the upper box relative to the lower box in a determined first direction of rotation and the transmission wheel is rotated by the watch movement in a second direction of rotation. rotation opposite the first direction of rotation, the drive mechanism being arranged to interrupt the rotational drive of the transmission wheel when the boxes are brought to the open position and to restore the rotational drive of the transmission wheel when the boxes are brought back to the closed position.
  • the drive mechanism is also arranged to catch a synchronism error (or delay) between the first and second display means when the boxes are returned to the closed position.
  • the timepiece further comprises a retaining element of substantially tubular shape, of axis coinciding with the axis of pivoting of the boxes and traversed by the aforementioned transmission mobile, this retaining element being integral. of one of the boxes and now axially the other box along the pivot axis while allowing a rotation of this other box relative to the retainer.
  • FIGS. 1a to 1c generally illustrate a timepiece in the general form of a wristwatch and constituting a preferred embodiment of the present invention.
  • the body forming the box of the timepiece consists of two boxes 1 and 2, respectively designated upper box and lower box, each carrying on their front face display means generally designated by the numbers 16 and 26 respectively.
  • These two boxes 1, 2 are pivotable relative to each other about a pivot axis, designated X, substantially perpendicular to the general plane of the two boxes 1 and 2.
  • the upper boxes 1 and lower 2 may occupy a first position, said closed, (not shown) where the upper box 1 is superimposed on the lower box 2 and masks the front face of this box, and a second position, called open, (position shown in the Figures 1a to 1c ) where the upper box 1 is pivoted with respect to the lower box 2 to discover at least a portion of the front face where the second display means 26 are located.
  • the lower box 2 is conventionally provided with horns 4 to allow the attachment of a non represent.
  • the upper box 1 is in turn conventionally provided with a crown rod 3 to allow the time setting of the timepiece.
  • the first display means 16 formed on the front face of the upper box 1 conventionally include hour and minute hands arranged in the center and supplemented by other indicators, for example a seconds indicator or a power reserve indicator.
  • the second display means 26 formed on the front face of the lower box 2 include in particular a moon phase indicator and a date indicator. These second display means 26 are generally arranged in eccentric position on the front face of the lower box 2.
  • the hour and minute hands may for example be arranged on the front face of the lower box 2.
  • the hour and minute hands may for example be arranged on the front face of the lower box 2.
  • these needles on the box in which are housed the source of mechanical energy (barrel and barrel spring) and the regulating members of the walking of the timepiece (sprung balance and escapement), these bodies being able to be arranged independently in the upper box 1 or lower 2.
  • the presence of the crown rod 3 and the hour and minute hands on the upper box 1 suggests that these bodies are arranged in the upper box 1.
  • the watch movement is, strictly speaking, subdivided into two parts (not shown in FIGS. Figures 1a to 1c ) respectively housed in the upper 1 and lower 2 boxes (these parts are hereinafter referred to generally as numerals 100 and 200 respectively), a drive mechanism being provided to ensure a kinematic connection between these two parts of the movement.
  • This drive mechanism will be described in more detail later in this description.
  • this pivot point is advantageously disposed inside the outer periphery of the two boxes 1, 2, no unsightly ear or protuberance being thus apparent on the periphery of the boxes.
  • the pivot axis X is essentially in the quadrant between midday and three o'clock (here substantially at two o'clock), the second display means 26 being slightly eccentric towards the lower left part of the front of the lower box 2.
  • the boxes 1, 2 are brought into the open position by rotation of the upper box 1 in a determined direction of rotation about the pivot axis X.
  • This opening direction is designated in FIG. figure 1b by an arrow bearing the reference A, this opening direction here being anti-clockwise (by convention this direction of rotation is defined around the pivot axis X, display means 16, 26 directed forwardly).
  • the upper box 1 is rotated about 180 ° from its closed position where it is superimposed on the lower box 2 to form together a body having the appearance of a usual watch case.
  • a rotation limiting mechanism is preferably provided for guiding the boxes 1, 2 and limiting their opening angle.
  • the figure 2 shows a partial sectional view passing through the pivot axis X of the boxes 1, 2 of the timepiece illustrated in FIGS. Figures 1a to 1c .
  • the figure 2 also shows a portion of a dial 17 disposed under the lens 15 and facing which turn the hands of the first display means 16.
  • the seal between the bezel 11 and the bottom 12, and between the bezel 21 and the bottom 22 is provided conventionally by a seal 13, respectively 23, disposed in a groove formed on the bottom 12, resp. 22.
  • the bottom 12 of the upper box 1 and the bezel 21 of the lower box 2 comprise an opening arranged to allow the passage of the drive mechanism ensuring the kinematic connection between the two parts 100, 200 of the watch movement.
  • This drive mechanism is generally designated by the number 5 and is illustrated in more detail in the Figures 4a and 4b which will be discussed below.
  • the drive mechanism 5 comprises in particular a transmission mobile 51, one end of which emerges in the upper box 1 and another end of which emerges in the lower box 2.
  • the pivoting and the mechanical connection between the upper 1 and lower 2 boxes are preferably provided by means of a tubular retaining element 30 whose axis coincides with the axis of pivoting X of the boxes 1, 2 and through which passes the mobile transmission 51.
  • This retaining element 30 is secured to one of the boxes (here the upper box 1) for example by screwing, as illustrated, or by any other suitable means.
  • the retaining element 30 thus has a threaded end 30a cooperating with a tapping. formed in the bottom 12 of the upper box 1.
  • the lower box 2 is retained axially along the pivot axis X via a bearing surface 30b formed on the other end of the element 30. In this case, the telescope 21 of the lower box 2 is held axially between the bearing surface 30b and the bottom 12 of the upper box 1.
  • the retaining element 30 advantageously forms the inner ring of a ball bearing 31 whose outer ring 32 is integral with the lower box 2. It will be understood that this configuration makes it possible to reduce the friction between the contact zones of the two boxes. during the opening and closing operations of the two boxes.
  • a ball bearing and to directly provide a radial clearance between the retaining element 30 and the lower box 2.
  • retaining element 30 could alternatively be made integral with the lower box 2 and that the pivoting of two boxes could be ensured by rotation between the retaining element 30 and the upper box 1.
  • FIGS. Figures 2 and 3 From a mechanical point of view and from the point of view of sealing at the pivot axis X, it is preferable, as illustrated in FIGS. Figures 2 and 3 , to arrange on one of the boxes at least one annular protrusion cooperating with an orifice or an annular groove of corresponding diameter on the other box.
  • the bottom 12 of the upper box 1 is thus provided with such a protuberance designated by the numeral 12a cooperating with a corresponding orifice, designated 21a, formed in the bezel 21 of the lower box 2.
  • the bezel 21 is again provided with an annular protuberance 21b which is housed in a corresponding annular groove 12b formed in the bottom 12.
  • annular seal 33 interposed radially between the protuberance 12a and the wall of the orifice 21a.
  • This annular seal 33 is in this case disposed in a groove in the wall of the orifice 21a. It is obvious that the annular seal 33 could alternatively be housed in a groove formed around the protuberance 12a.
  • the figure 2a is a partial sectional view of the timepiece, according to sectional planes generally perpendicular to the pivot axis X, along the cutting line AA carried on the figure 2 . It contains the bottom 12 of the upper box 1 and the bezel 21 of the lower box 2 and the annular protuberances 12a and 21b formed respectively on the bottom 12 and the bezel 21. There is also in section the retaining element 30 and its threaded end 30a made integral with the bottom 12 by screwing, as well as the transmission wheel 51 of the drive mechanism 5. Finally, the ball bearing is partially found with its outer ring 32.
  • the rotation limitation mechanism 6 ensures, on the one hand, that the boxes 1, 2 can not be brought into position. open only by rotation of the upper box 1 in a single direction of rotation, here anti-clockwise.
  • This limiting mechanism ensures, on the other hand, a determined opening angle, here chosen to correspond substantially to 180 °.
  • the rotation limiting mechanism 6 comprises a limiting pin 61 made here integral with the bezel 21 of the lower box 2 and which cooperates with a groove 62 formed in the bottom 12 of the upper box 1. This pin of limitation 61 and this groove 62 are partially reported on the Figures 2 and 3 .
  • the drive mechanism 5 further comprises a drive wheel 53, a plate 52 and connecting means 55, 56 interposed between the wheel of 53 and the plate 52.
  • the drive wheel 53 and the plate 52 are mounted coaxially with the transmission mobile 51 and are arranged with the connecting means 55, 56 on one end of the transmission mobile 51 located here in the upper box 1.
  • the other end of the transmission mobile 51 is located in the lower box 2.
  • the transmission wheel 51 is mounted between a bridge 120 of the first part 100 of the movement in the upper box 1 and a bridge 220 of the second part 200 of the movement in the lower box 2.
  • the reference numerals 110 and 210 designate additional bridges or decks of the two parts 100 and 200 of the movement.
  • the plate 52 is fixedly secured to the transmission unit 51 while the drive wheel 53 is rotatably mounted around the transmission unit 51. It can be seen here that the drive wheel 53 is held axially between the plate 52 and a range (not referenced) provided on the transmission mobile 51.
  • the drive wheel 53 is in permanent engagement with the first part 100 of the watch movement, housed in the upper box 1.
  • a drive wheel 105 forming part of the first part 100 of the watch movement with its toothing 105a engaged with the toothing 53a of the drive wheel 53.
  • the drive wheel 53 is continuously driven in rotation under the effect of the first part 100 of the watch movement, the drive of this wheel 53 being effected in the direction of the arrow B.
  • the transmission mobile 51 is in direct contact with the second part 200 of the watch movement.
  • the transmission mobile 51 is terminated by a pinion portion 51a in direct contact with the toothing 205a of a wheel 205 forming part of the second part 200 of the watch movement, located in the lower box 2.
  • the connecting means 55, 56 between the plate 52 and the drive wheel 53 are arranged so that the plate 52 is normally rotated by means of the drive wheel 53 when the boxes 1, 2 occupy the position. closed position and so that the rotation drive of the plate 52 by the drive wheel 53 is interrupted when the boxes are brought to the open position.
  • the drive wheel 53 carries a pin 55 arranged in an eccentric position with respect to the pivot axis X and one end of which is slidably engaged in a groove 56 formed in the plate 52 and which presents a circular arc pattern.
  • the pin 55 could alternatively be placed on the plate 52 and the groove 56 formed on the drive wheel 53.
  • the rotation drive of the plate 52 by the drive wheel 53 is ensured by stop the pin 55 against one end of the groove 56 as is clearly illustrated in the figure 4a .
  • the pin 55 undergoes a movement in the groove 56, thus interrupting the stop of the pin 55 against the end of the groove 56.
  • the drive wheel 53 In the open position, the drive wheel 53 is, however, always rotated by the first part 100 of the movement.
  • the pin 55 will therefore move in the groove 56 towards the end of the groove 56 where the pin was previously abutted. After a certain period of time depending on the speed of rotation of the drive wheel 53 and the dimensions of the groove 56, the pin 55 will again abut against the end of the groove 56.
  • a synchronism error between the display means 16, 26 will be generated, this error increasing over time to reach a determined value when the pin 55 is again brought into abutment against the end of groove 56.
  • the pin 55 When opening and closing the boxes, the pin 55 undergoes an angular displacement corresponding to the opening angle of the boxes in one direction and then in the other.
  • the opening and closing operations therefore in the end result in no delay or loss of synchronism between the first and second display means 16 and 26.
  • the delay is solely due to the time which has elapsed since the interruption of the kinematic connection and this delay is fully caught during the closing due to the relative angular displacement of the pin 55 relative to the groove 56.
  • the plate 52 and the mobile transmission 51 will undergo during closing an angular displacement forced which is equivalent to the opening angle of the boxes, that is to say 180 ° in this example.
  • the dimensions of the groove 56 are chosen to allow the pin to move when opening the boxes without coming into contact with the other end of the groove 56.
  • the groove 56 has a development angle greater than the opening angle of the boxes 1, 2.
  • the plate 52 and the transmission mobile 51 will be partially driven when opening the boxes in a direction of rotation opposite to their normal direction of rotation, which is not advisable.
  • the development angle of the groove 56 is slightly greater than the opening angle of the boxes, here fixed at 180 °.
  • the maximum interruption time of the kinematic link between the two parts 100, 200 of the movement depends on the sizing of the movement of the movement and the drive mechanism 5 and can be fixed at will to a few minutes or hours. It should be mentioned that the forced angular displacement as well as the constraints on the teeth of the mobiles during the closing is not a real problem.

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Description

Arrière-plan technologiqueTechnological background

La présente invention est relative à une pièce d'horlogerie comprenant un corps formant boîte à l'intérieur duquel est logé un mouvement horloger, ce corps présentant au moins deux faces distinctes sur lesquelles sont disposés respectivement des premier et second moyens d'affichage entraînés par le mouvement horloger.The present invention relates to a timepiece comprising a box body inside which is housed a watch movement, this body having at least two distinct faces on which are arranged respectively first and second display means driven by the watch movement.

Des pièces d'horlogerie répondant à la définition générale ci-dessus sont déjà connues. Les documents US 4 236 239 , US 4 493 561 , US Des 352 469 , DE 43 22 471 , US 5 479 381 , EP 1 070 997 , WO 01/07970 , EP 1 189 117 ou EP 1 189 118 décrivent par exemple des solutions où les premiers et seconds moyens d'affichage sont disposés sur deux faces opposées d'un même corps formant boîte, ce corps pouvant être formé d'une unique boîte ou de deux demi-boîtes indépendantes rendues solidaires l'une de l'autre. Ces solutions impliquent le retournement du corps formant boîte afin de découvrir alternativement les premiers ou les seconds moyens d'affichage et nécessitent parfois des mécanismes plus ou moins complexes pour permettre ce retournement, à l'image des solutions décrites dans les documents US 4 236 239 , US 4 493 561 , US Des 352 469 , DE 43 22 471 , EP 1 189 117 ou EP 1 189 118 . Les solutions décrites dans les documents US 5 479 381 , EP 1 070 997 et WO 01/07970 sont structurellement plus simples dans la mesure où il suffit de retourner la pièce d'horlogerie dans son ensemble, ceci impliquant l'utilisation d'un bracelet réversible dans le cas d'une application comme montre-bracelet.Timepieces meeting the above general definition are already known. The documents US 4,236,239 , US 4,493,561 , US Des 352,469 , DE 43 22 471 , US 5,479,381 , EP 1 070 997 , WO 01/07970 , EP 1 189 117 or EP 1 189 118 describe for example solutions where the first and second display means are arranged on two opposite faces of the same box body, this body may be formed of a single box or two independent half-boxes made integral with one another. the other. These solutions involve the overturning of the box body in order to discover alternately the first or the second display means and sometimes require more or less complex mechanisms to allow this reversal, in the image of the solutions described in the documents. US 4,236,239 , US 4,493,561 , US Des 352,469 , DE 43 22 471 , EP 1 189 117 or EP 1 189 118 . The solutions described in the documents US 5,479,381 , EP 1 070 997 and WO 01/07970 are structurally simpler to the extent that it is sufficient to return the timepiece as a whole, this involving the use of a reversible bracelet in the case of an application as a wristwatch.

Des solutions où le corps formant boîte est constitué de deux boîtes ou demi-boîtes articulées sont également connues, par exemple des documents CH 680 329 ou US 4 444 513 . Enfin, des solutions employant deux boîtes distinctes sont également connues comme le montre le document US 3 293 846 . Ces configurations impliquent nécessairement que chaque boîte comporte son propre mouvement horloger.Solutions where the box body consists of two articulated boxes or half-boxes are also known, for example documents CH 680 329 or US 4,444,513 . Finally, solutions employing two separate boxes are also known as shown in the document US 3,293,846 . These configurations necessarily imply that each box has its own watch movement.

Un inconvénient commun à toutes les solutions susmentionnées réside dans le fait que les deux moyens d'affichage ne peuvent être visibles simultanément. Certaines des configurations envisagées impliquent par ailleurs la présence de deux mouvements horlogers distincts pour entraîner les moyens d'affichage.A disadvantage common to all the aforementioned solutions lies in the fact that the two display means can not be visible simultaneously. Some of the configurations envisaged also imply the presence of two distinct clock movements to drive the display means.

Pour compléter l'exposé de l'état de la technique, on peut encore citer le document CH 655 633 qui présente une pièce d'horlogerie comprenant des première et seconde boîtes (une boîte supérieure et une boîte inférieure) montées pivotantes l'une par rapport à l'autre autour d'un axe de pivotement sensiblement perpendiculaire au plan général des boîtes. Les deux boîtes peuvent occuper une première position fermée où la boîte supérieure est superposée à la boîte inférieure et masque la face avant de la boîte inférieure, et une seconde position ouverte où la boîte supérieure est pivotée par rapport à la boîte inférieure pour en découvrir la face avant. Il s'agit cependant ici d'une pièce d'horlogerie où la boîte supérieure comporte un mouvement horloger et des moyens associés pour l'affichage de l'heure et où la boîte inférieure comporte une boussole. On comprendra que le mouvement horloger est intégralement monté dans la boîte supérieure et est totalement indépendant du mécanisme logé dans la boîte inférieure, à savoir la boussole.To complete the presentation of the state of the art, we can also mention the document CH 655 633 which presents a timepiece comprising first and second boxes (an upper box and a lower box) pivotally mounted relative to each other about a pivot axis substantially perpendicular to the general plane of the boxes. The two boxes can occupy a first closed position where the upper box is superimposed on the lower box and hides the front face of the lower box, and a second open position where the upper box is rotated relative to the lower box to discover the front face. However, this is a timepiece where the upper box has a watch movement and associated means for displaying the time and the lower box has a compass. It will be understood that the watch movement is integrally mounted in the upper box and is completely independent of the mechanism housed in the lower box, namely the compass.

Exposé de l'inventionPresentation of the invention

Un but général de la présente invention est de proposer une solution permettant, à l'image des solutions antérieures, d'exploiter une plus grande surface sur la pièce d'horlogerie pour l'équiper d'un vaste éventail de moyens d'affichage, tout en assurant cependant une grande simplicité de manipulation, en particulier en évitant la nécessité de retourner le corps formant boîte.A general object of the present invention is to propose a solution making it possible, like previous solutions, to use a larger surface area on the timepiece to equip it with a wide range of display means, while ensuring, however, a great simplicity of handling, in particular by avoiding the need to turn the box body.

Un autre but de la présente invention est de proposer une solution qui ne nécessite qu'un unique mouvement horloger qui puisse par ailleurs être entièrement réalisé sous forme mécanique.Another object of the present invention is to propose a solution which requires only a single watch movement which can moreover be entirely realized in mechanical form.

A cet effet, la présente invention a pour objet une pièce d'horlogerie dont les caractéristiques sont énoncées dans la revendication 1.For this purpose, the present invention relates to a timepiece whose characteristics are set forth in claim 1.

Le corps formant la boîte de la pièce d'horlogerie comporte ainsi une première boîte, dite boîte supérieure, présentant une face avant comportant les premiers moyens d'affichage et une seconde boîte, dite boîte inférieure, présentant une face avant comportant les seconds moyens d'affichage. Ces boîtes sont montées pivotantes l'une par rapport à l'autre autour d'un axe de pivotement sensiblement perpendiculaire au plan général des boîtes et peuvent occuper une première position, dite fermée, où la boîte supérieure est superposée à la boîte inférieure et masque au moins en partie la face avant de la boîte inférieure, et une seconde position, dite ouverte, où la boîte supérieure est pivotée latéralement par rapport à la boîte inférieure pour en découvrir au moins une partie de la face avant. Le mouvement horloger comprend des première et seconde parties logées respectivement dans les boîtes supérieure et inférieure pour entraîner les premiers et seconds moyens d'affichage, respectivement, et un mécanisme d'entraînement assurant une liaison cinématique entre les première et seconde parties du mouvement horloger. De préférence, ce mécanisme d'entraînement est agencé pour assurer une interruption de la liaison cinématique entre les première et seconde parties du mouvement horloger lorsque les boîtes sont amenées dans la position ouverte.The body forming the box of the timepiece thus comprises a first box, called upper box, having a front face comprising the first display means and a second box, said lower box, having a front face including the second means of display. These boxes are pivotally mounted relative to each other about a pivot axis substantially perpendicular to the general plane of the boxes and can occupy a first position, said closed, where the upper box is superimposed on the lower box and mask at least partly the front face of the lower box, and a second position, said open, where the upper box is laterally pivoted relative to the lower box to discover at least a portion of the front face. The watch movement comprises first and second parts respectively housed in the upper and lower boxes for driving the first and second display means, respectively, and a driving mechanism providing a link kinematic between the first and second parts of the watch movement. Preferably, this drive mechanism is arranged to ensure an interruption of the kinematic connection between the first and second parts of the watch movement when the boxes are brought into the open position.

De la sorte, il est proposé une pièce d'horlogerie permettant de masquer et découvrir des moyens d'affichage additionnels disposés sur la face avant de la boîte inférieure, ces manipulations étant simplement effectuées par rotation de la boîte supérieure autour de l'axe de pivotement. Ceci constitue une solution particulièrement élégante qui ne nécessite pas le retournement de la boîte comme c'est le cas dans les solutions de l'art antérieur.In this way, there is proposed a timepiece for masking and discovering additional display means disposed on the front face of the lower box, these manipulations being simply performed by rotation of the upper box around the axis of pivoting. This is a particularly elegant solution that does not require the flipping of the box as is the case in the solutions of the prior art.

Le mouvement horloger est subdivisé en deux parties qui sont respectivement logées dans les boîtes supérieure et inférieure, le mécanisme d'entraînement étant prévu pour assurer une liaison cinématique entre ces deux parties du mouvement horloger et pour interrompre cette liaison cinématique lorsque les boîtes sont amenées en position ouverte. Selon un mode de réalisation particulièrement avantageux, le mécanisme d'entraînement comporte un mobile de transmission, d'axe confondu avec l'axe de pivotement des boîtes, ce mobile de transmission comprenant une première extrémité située dans la boîte supérieure et une seconde extrémité située dans la boîte inférieure. Selon ce mode de réalisation, les boîtes sont amenées en position ouverte par rotation de la boîte supérieure par rapport à la boîte inférieure selon un premier sens de rotation déterminé et le mobile de transmission est entraîné en rotation par le mouvement horloger selon un second sens de rotation opposé au premier sens de rotation, le mécanisme d'entraînement étant agencé pour interrompre l'entraînement en rotation du mobile de transmission lorsque les boîtes sont amenées en position ouverte et pour rétablir l'entraînement en rotation du mobile de transmission lorsque les boîtes sont ramenées en position fermée.The watch movement is subdivided into two parts which are respectively housed in the upper and lower boxes, the drive mechanism being provided to provide a kinematic connection between these two parts of the watch movement and to interrupt this kinematic connection when the boxes are brought into position. open position. According to a particularly advantageous embodiment, the drive mechanism comprises a transmission unit, of axis coinciding with the axis of pivoting of the boxes, this transmission unit comprising a first end located in the upper box and a second end located in the lower box. According to this embodiment, the boxes are brought into the open position by rotation of the upper box relative to the lower box in a determined first direction of rotation and the transmission wheel is rotated by the watch movement in a second direction of rotation. rotation opposite the first direction of rotation, the drive mechanism being arranged to interrupt the rotational drive of the transmission wheel when the boxes are brought to the open position and to restore the rotational drive of the transmission wheel when the boxes are brought back to the closed position.

Selon une variante préférée de ce mode de réalisation, le mécanisme d'entraînement est par ailleurs agencé pour rattraper une erreur de synchronisme (ou retard) entre les premiers et seconds moyens d'affichage lorsque les boîtes sont ramenées en position fermée.According to a preferred variant of this embodiment, the drive mechanism is also arranged to catch a synchronism error (or delay) between the first and second display means when the boxes are returned to the closed position.

Selon un mode de réalisation, la pièce d'horlogerie comporte en outre un élément de retenue de forme essentiellement tubulaire, d'axe confondu avec l'axe de pivotement des boîtes et traversé par le mobile de transmission susmentionné, cet élément de retenue étant solidaire de l'une des boîtes et maintenant axialement l'autre boîte le long de l'axe de pivotement tout en permettant une rotation de cette autre boîte par rapport à l'élément de retenue.According to one embodiment, the timepiece further comprises a retaining element of substantially tubular shape, of axis coinciding with the axis of pivoting of the boxes and traversed by the aforementioned transmission mobile, this retaining element being integral. of one of the boxes and now axially the other box along the pivot axis while allowing a rotation of this other box relative to the retainer.

Description sommaire 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 qui suit de modes de réalisation de l'invention, présentés uniquement à titre d'exemples non limitatifs et illustrés par les dessins annexés où :

  • les figures 1a, 1b et 1c sont respectivement des vues en perspective, en plan et de côté d'un mode de réalisation de l'invention, où les deux boîtes sont illustrées en position ouverte ;
  • la figure 2 est une vue en coupe partielle de la pièce d'horlogerie illustrée dans les figures 1a à 1c, passant par l'axe de pivotement des boîtes ;
  • la figure 2a est une vue de dessous en coupe partielle prise perpendiculairement à l'axe de pivotement des boîtes, selon la ligne de coupe A-A reportée sur la figure 2 ;
  • la figure 3 est une vue en coupe partielle analogue à la figure 2, illustrant une variante de réalisation ; et
  • les figures 4a et 4b sont respectivement des vues en plan et en coupe détaillant plus particulièrement un mode de réalisation préféré du mécanisme d'entraînement qui assure la liaison cinématique entre les deux parties du mouvement.
Other features and advantages of the present invention will emerge more clearly on reading the following detailed description of embodiments of the invention, presented solely by way of nonlimiting examples and illustrated by the appended drawings in which:
  • the Figures 1a, 1b and 1c are respectively perspective, plan and side views of an embodiment of the invention, wherein the two boxes are illustrated in the open position;
  • the figure 2 is a partial sectional view of the timepiece illustrated in the Figures 1a to 1c passing through the pivot axis of the boxes;
  • the figure 2a is a partial sectional bottom view taken perpendicular to the axis of pivoting of the boxes, according to the sectional line AA shown on the figure 2 ;
  • the figure 3 is a partial sectional view similar to the figure 2 illustrating an alternative embodiment; and
  • the Figures 4a and 4b are respectively plan and sectional views detailing more particularly a preferred embodiment of the drive mechanism which provides the kinematic connection between the two parts of the movement.

Description de modes de réalisation de l'inventionDescription of Embodiments of the Invention

Les figures 1a à 1c illustrent globalement une pièce d'horlogerie se présentant sous la forme générale d'une montre-bracelet et constituant un mode de réalisation préféré de la présente invention. On peut y voir que le corps formant la boîte de la pièce d'horlogerie est constitué de deux boîtes 1 et 2, désignées respectivement boîte supérieure et boîte inférieure, portant chacune sur leur face avant des moyens d'affichage désignés globalement par les numéros 16 et 26 respectivement. Ces deux boîtes 1, 2 sont susceptibles de pivoter l'une par rapport à l'autre autour d'un axe de pivotement, désigné X, sensiblement perpendiculaire au plan général des deux boîtes 1 et 2. De la sorte, les boîtes supérieure 1 et inférieure 2 peuvent occuper une première position, dite fermée, (non représentée) où la boîte supérieure 1 est superposée à la boîte inférieure 2 et masque la face avant de cette boîte, et une seconde position, dite ouverte, (position représentée dans les figures 1a à 1c) où la boîte supérieure 1 est pivotée par rapport à la boîte inférieure 2 pour en découvrir au moins une partie de la face avant où se trouvent les seconds moyens d'affichage 26.The Figures 1a to 1c generally illustrate a timepiece in the general form of a wristwatch and constituting a preferred embodiment of the present invention. It can be seen that the body forming the box of the timepiece consists of two boxes 1 and 2, respectively designated upper box and lower box, each carrying on their front face display means generally designated by the numbers 16 and 26 respectively. These two boxes 1, 2 are pivotable relative to each other about a pivot axis, designated X, substantially perpendicular to the general plane of the two boxes 1 and 2. In this way, the upper boxes 1 and lower 2 may occupy a first position, said closed, (not shown) where the upper box 1 is superimposed on the lower box 2 and masks the front face of this box, and a second position, called open, (position shown in the Figures 1a to 1c ) where the upper box 1 is pivoted with respect to the lower box 2 to discover at least a portion of the front face where the second display means 26 are located.

Dans le mode de réalisation qui est illustré, on notera que la boîte inférieure 2 est munie classiquement de cornes 4 pour permettre la fixation d'un bracelet non représenté. La boîte supérieure 1 est quant à elle classiquement pourvue d'une tige-couronne 3 pour permettre la mise à l'heure de la pièce d'horlogerie. Les premiers moyens d'affichage 16 ménagés sur la face avant de la boîte supérieure 1 (sous une glace désignée par la référence numérique 15) incluent classiquement des aiguilles des heures et des minutes disposées au centre et complétées par d'autres indicateurs, par exemple un indicateur des secondes ou un indicateur de réserve de marche. Les seconds moyens d'affichage 26 ménagés sur la face avant de la boîte inférieure 2 (sous une seconde glace désignée par la référence numérique 25) incluent quant à eux notamment un indicateur de phases de lune et un indicateur des quantièmes. Ces seconds moyens d'affichage 26 sont globalement disposés en position excentrée sur la face avant de la boîte inférieure 2.In the embodiment that is illustrated, it will be noted that the lower box 2 is conventionally provided with horns 4 to allow the attachment of a non represent. The upper box 1 is in turn conventionally provided with a crown rod 3 to allow the time setting of the timepiece. The first display means 16 formed on the front face of the upper box 1 (under a mirror designated by the reference numeral 15) conventionally include hour and minute hands arranged in the center and supplemented by other indicators, for example a seconds indicator or a power reserve indicator. The second display means 26 formed on the front face of the lower box 2 (under a second mirror designated by the reference numeral 25) include in particular a moon phase indicator and a date indicator. These second display means 26 are generally arranged in eccentric position on the front face of the lower box 2.

La répartition illustrée des divers indicateurs sur les deux boîtes 1, 2 n'est bien évidemment pas limitative et pourrait être tout autre, les aiguilles des heures et des minutes pouvant par exemple être disposées sur la face avant de la boîte inférieure 2. On disposera typiquement ces aiguilles sur la boîte dans laquelle sont logés la source d'énergie mécanique (barillet et ressort de barillet) et les organes de régulation de la marche de la pièce d'horlogerie (balancier-spiral et échappement), ces organes pouvant être disposés indépendamment dans la boîte supérieure 1 ou inférieure 2. Dans les modes de réalisation illustrés dans les figures, on comprendra que la présence de la tige-couronne 3 et des aiguilles des heures et des minutes sur la boîte supérieure 1 suggère que ces organes sont disposés dans la boîte supérieure 1.The illustrated distribution of the various indicators on the two boxes 1, 2 is obviously not limiting and could be quite different, the hour and minute hands may for example be arranged on the front face of the lower box 2. We will have typically these needles on the box in which are housed the source of mechanical energy (barrel and barrel spring) and the regulating members of the walking of the timepiece (sprung balance and escapement), these bodies being able to be arranged independently in the upper box 1 or lower 2. In the embodiments illustrated in the figures, it will be understood that the presence of the crown rod 3 and the hour and minute hands on the upper box 1 suggests that these bodies are arranged in the upper box 1.

Dans le cadre de la présente invention, il convient de mentionner que le mouvement horloger est à proprement parler subdivisé en deux parties (non représentées dans les figures 1a à 1c) logées respectivement dans les boîtes supérieure 1 et inférieure 2 (ces parties sont désignées dans la suite globalement par les références numériques 100 et 200 respectivement), un mécanisme d'entraînement étant prévu pour assurer une liaison cinématique entre ces deux parties du mouvement. Ce mécanisme d'entraînement sera décrit plus en détail dans la suite de la présente description.In the context of the present invention, it should be mentioned that the watch movement is, strictly speaking, subdivided into two parts (not shown in FIGS. Figures 1a to 1c ) respectively housed in the upper 1 and lower 2 boxes (these parts are hereinafter referred to generally as numerals 100 and 200 respectively), a drive mechanism being provided to ensure a kinematic connection between these two parts of the movement. This drive mechanism will be described in more detail later in this description.

Concernant la disposition du point de pivotement des deux boîtes 1, 2, celui-ci peut a priori être placé en tout point adéquat de la pièce d'horlogerie. Comme illustré dans les figures, ce point de pivotement est avantageusement disposé à l'intérieur du pourtour externe des deux boîtes 1, 2, aucune oreille ou protubérance disgracieuse n'étant ainsi apparente sur la périphérie des boîtes. Dans les figures, on peut voir que l'axe de pivotement X se situe essentiellement dans le quadrant compris entre midi et trois heures (ici sensiblement à deux heures), les seconds moyens d'affichage 26 étant légèrement excentrés vers la partie inférieure gauche de la face avant de la boîte inférieure 2.Regarding the arrangement of the pivot point of the two boxes 1, 2, it can a priori be placed at any suitable point of the timepiece. As illustrated in the figures, this pivot point is advantageously disposed inside the outer periphery of the two boxes 1, 2, no unsightly ear or protuberance being thus apparent on the periphery of the boxes. In the figures, it can be seen that the pivot axis X is essentially in the quadrant between midday and three o'clock (here substantially at two o'clock), the second display means 26 being slightly eccentric towards the lower left part of the front of the lower box 2.

Préférablement, les boîtes 1, 2 sont amenées en position ouverte par rotation de la boîte supérieure 1 selon un sens de rotation déterminé autour de l'axe de pivotement X. Ce sens d'ouverture est désigné dans la figure 1b par une flèche portant la référence A, ce sens d'ouverture étant ici anti-horaire (par convention ce sens de rotation est défini autour de l'axe de pivotement X, moyens d'affichage 16, 26 dirigés vers l'avant). En position ouverte, la boîte supérieure 1 est pivotée d'environ 180° par rapport à sa position fermée où elle est superposée à la boîte inférieure 2 pour former ensemble un corps ayant l'aspect d'une boîte de montre habituelle. Un mécanisme de limitation de rotation est préférablement prévu pour guider les boîtes 1, 2 et limiter leur angle d'ouverture.Preferably, the boxes 1, 2 are brought into the open position by rotation of the upper box 1 in a determined direction of rotation about the pivot axis X. This opening direction is designated in FIG. figure 1b by an arrow bearing the reference A, this opening direction here being anti-clockwise (by convention this direction of rotation is defined around the pivot axis X, display means 16, 26 directed forwardly). In the open position, the upper box 1 is rotated about 180 ° from its closed position where it is superimposed on the lower box 2 to form together a body having the appearance of a usual watch case. A rotation limiting mechanism is preferably provided for guiding the boxes 1, 2 and limiting their opening angle.

La figure 2 montre une vue en coupe partielle passant par l'axe de pivotement X des boîtes 1, 2 de la pièce d'horlogerie illustrée dans les figures 1a à 1c. On y retrouve la boîte supérieure 1, formée d'une lunette 11 portant la glace 15 ajustée sur une partie formant fond 12, et la boîte inférieure 2, formée de manière analogue d'une lunette 21 portant la glace 25 (figure 1a) ajustée sur une partie formant fond 22. La figure 2 montre également une partie d'un cadran 17 disposé sous la glace 15 et en regard duquel tournent les aiguilles des premiers moyens d'affichage 16. L'étanchéité entre la lunette 11 et le fond 12, ainsi qu'entre la lunette 21 et le fond 22 est assurée classiquement par un joint d'étanchéité 13, respectivement 23, disposé dans une rainure ménagée sur le fond 12, resp. 22.The figure 2 shows a partial sectional view passing through the pivot axis X of the boxes 1, 2 of the timepiece illustrated in FIGS. Figures 1a to 1c . There is the upper box 1, formed of a bezel 11 carrying the ice 15 fitted on a bottom portion 12, and the lower box 2, formed in a similar manner of a bezel 21 carrying the ice 25 ( figure 1a ) fitted to a bottom portion 22. The figure 2 also shows a portion of a dial 17 disposed under the lens 15 and facing which turn the hands of the first display means 16. The seal between the bezel 11 and the bottom 12, and between the bezel 21 and the bottom 22 is provided conventionally by a seal 13, respectively 23, disposed in a groove formed on the bottom 12, resp. 22.

Le fond 12 de la boîte supérieure 1 ainsi que la lunette 21 de la boîte inférieure 2 comportent une ouverture agencée pour permettre le passage du mécanisme d'entraînement assurant la liaison cinématique entre les deux parties 100, 200 du mouvement horloger. Ce mécanisme d'entraînement est désigné globalement par le numéro 5 et est illustré plus en détail dans les figures 4a et 4b qui seront discutées ci-après. Selon le mode de réalisation illustré, on notera déjà que le mécanisme d'entraînement 5 comporte notamment un mobile de transmission 51 dont une extrémité émerge dans la boîte supérieure 1 et dont une autre extrémité émerge dans la boîte inférieure 2.The bottom 12 of the upper box 1 and the bezel 21 of the lower box 2 comprise an opening arranged to allow the passage of the drive mechanism ensuring the kinematic connection between the two parts 100, 200 of the watch movement. This drive mechanism is generally designated by the number 5 and is illustrated in more detail in the Figures 4a and 4b which will be discussed below. According to the illustrated embodiment, it will already be noted that the drive mechanism 5 comprises in particular a transmission mobile 51, one end of which emerges in the upper box 1 and another end of which emerges in the lower box 2.

Le pivotement et la liaison mécanique entre les boîtes supérieure 1 et inférieure 2 sont préférablement assurés au moyen d'un élément de retenue de forme tubulaire 30 dont l'axe est confondu avec l'axe de pivotement X des boîtes 1, 2 et au travers duquel passe le mobile de transmission 51. Cet élément de retenue 30 est rendu solidaire de l'une des boîtes (ici la boîte supérieure 1) par exemple par vissage, comme illustré, ou par tout autre moyen adéquat. Dans cet exemple, l'élément de retenue 30 comporte ainsi une extrémité filetée 30a coopérant avec un taraudage ménagé dans le fond 12 de la boîte supérieure 1. La boîte inférieure 2 est retenue axialement le long de l'axe de pivotement X par l'intermédiaire d'une portée 30b ménagée sur l'autre extrémité de l'élément 30. Dans le cas d'espèce, la lunette 21 de la boîte inférieure 2 est retenue axialement entre la portée 30b et le fond 12 de la boîte supérieure 1.The pivoting and the mechanical connection between the upper 1 and lower 2 boxes are preferably provided by means of a tubular retaining element 30 whose axis coincides with the axis of pivoting X of the boxes 1, 2 and through which passes the mobile transmission 51. This retaining element 30 is secured to one of the boxes (here the upper box 1) for example by screwing, as illustrated, or by any other suitable means. In this example, the retaining element 30 thus has a threaded end 30a cooperating with a tapping. formed in the bottom 12 of the upper box 1. The lower box 2 is retained axially along the pivot axis X via a bearing surface 30b formed on the other end of the element 30. In this case, the telescope 21 of the lower box 2 is held axially between the bearing surface 30b and the bottom 12 of the upper box 1.

Dans l'exemple de la figure 2, l'élément de retenue 30 forme avantageusement la bague intérieure d'un roulement à billes 31 dont la bague extérieure 32 est solidaire de la boîte inférieure 2. On comprendra que cette configuration permet de réduire les frottements entre les zones de contact des deux boîtes lors des opérations d'ouverture et de fermeture des deux boîtes. A titre d'alternative, comme illustré dans la figure 3, il est parfaitement envisageable de ne pas faire usage d'un roulement à billes et de ménager directement un jeu radial entre l'élément de retenue 30 et la boîte inférieure 2.In the example of the figure 2 , the retaining element 30 advantageously forms the inner ring of a ball bearing 31 whose outer ring 32 is integral with the lower box 2. It will be understood that this configuration makes it possible to reduce the friction between the contact zones of the two boxes. during the opening and closing operations of the two boxes. Alternatively, as illustrated in the figure 3 it is perfectly conceivable not to use a ball bearing and to directly provide a radial clearance between the retaining element 30 and the lower box 2.

On comprendra que l'élément de retenue 30 pourrait alternativement être rendu solidaire de la boîte inférieure 2 et que le pivotement de deux boîtes pourrait être assuré par rotation entre l'élément de retenue 30 et la boîte supérieure 1.It will be understood that the retaining element 30 could alternatively be made integral with the lower box 2 and that the pivoting of two boxes could be ensured by rotation between the retaining element 30 and the upper box 1.

D'un point de vue mécanique et du point de vue de l'étanchéité au niveau de l'axe de pivotement X, il est préférable, comme illustré dans les figures 2 et 3, de ménager sur l'une des boîtes au moins une protubérance de forme annulaire coopérant avec un orifice ou une rainure annulaire de diamètre correspondant sur l'autre boîte. Dans les exemples des figures 2 et 3, le fond 12 de la boîte supérieure 1 est ainsi muni d'une telle protubérance désignée par la référence numérique 12a coopérant avec un orifice correspondant, désigné 21a, ménagé dans la lunette 21 de la boîte inférieure 2. Dans la figure 2, la lunette 21 est encore pourvue d'une protubérance annulaire 21b venant se loger dans une rainure annulaire correspondante 12b ménagée dans le fond 12.From a mechanical point of view and from the point of view of sealing at the pivot axis X, it is preferable, as illustrated in FIGS. Figures 2 and 3 , to arrange on one of the boxes at least one annular protrusion cooperating with an orifice or an annular groove of corresponding diameter on the other box. In the examples of Figures 2 and 3 , the bottom 12 of the upper box 1 is thus provided with such a protuberance designated by the numeral 12a cooperating with a corresponding orifice, designated 21a, formed in the bezel 21 of the lower box 2. In the figure 2 the bezel 21 is again provided with an annular protuberance 21b which is housed in a corresponding annular groove 12b formed in the bottom 12.

L'étanchéité entre les deux boîtes 1 et 2 est assurée par un joint annulaire 33 interposé radialement entre la protubérance 12a et la paroi de l'orifice 21a. Ce joint annulaire 33 est en l'occurrence disposé dans une gorge ménagée dans la paroi de l'orifice 21 a. Il est bien évident que le joint annulaire 33 pourrait alternativement être logé dans une gorge ménagée autour de la protubérance 12a.The seal between the two boxes 1 and 2 is provided by an annular seal 33 interposed radially between the protuberance 12a and the wall of the orifice 21a. This annular seal 33 is in this case disposed in a groove in the wall of the orifice 21a. It is obvious that the annular seal 33 could alternatively be housed in a groove formed around the protuberance 12a.

La figure 2a est une vue en coupe partielle de la pièce d'horlogerie, selon des plans de coupe généralement perpendiculaires à l'axe de pivotement X, suivant la ligne de coupe A-A reportée sur la figure 2. On y retrouve le fond 12 de la boîte supérieure 1 et la lunette 21 de la boîte inférieure 2 ainsi que les protubérances annulaires 12a et 21b ménagées respectivement sur le fond 12 et la lunette 21. On y retrouve également en coupe l'élément de retenue 30 et son extrémité filetée 30a rendue solidaire du fond 12 par vissage, ainsi que le mobile de transmission 51 du mécanisme d'entraînement 5. On retrouve enfin partiellement le roulement à billes avec sa bague extérieure 32.The figure 2a is a partial sectional view of the timepiece, according to sectional planes generally perpendicular to the pivot axis X, along the cutting line AA carried on the figure 2 . It contains the bottom 12 of the upper box 1 and the bezel 21 of the lower box 2 and the annular protuberances 12a and 21b formed respectively on the bottom 12 and the bezel 21. There is also in section the retaining element 30 and its threaded end 30a made integral with the bottom 12 by screwing, as well as the transmission wheel 51 of the drive mechanism 5. Finally, the ball bearing is partially found with its outer ring 32.

Dans la figure 2a, on peut encore voir que la base de l'élément de retenue 30 où est ménagée la portée 30b comporte avantageusement deux plats latéraux 30c diamétralement opposés qui ont pour but de permettre et faciliter le vissage de l'élément de retenue 30 dans le fond 12 de la boîte supérieure 1, cette opération de vissage étant opérée ici avant le montage du fond 22 de la boîte inférieure 2.In the figure 2a it can further be seen that the base of the retaining element 30, which is provided with the bearing surface 30b, advantageously comprises two diametrically opposite side plates 30c, the purpose of which is to allow and facilitate the screwing of the retaining element 30 in the bottom 12 of the upper box 1, this screwing operation being performed here before mounting the bottom 22 of the lower box 2.

Dans la figure 2a, on peut enfin voir le mécanisme de limitation de rotation déjà mentionné ci-dessus, qui est repéré globalement par le numéro 6. Ce mécanisme de limitation 6 assure, d'une part, que les boîtes 1, 2 ne puissent être amenées en position ouverte que par rotation de la boîte supérieure 1 dans un unique sens de rotation, ici anti-horaire. Ce mécanisme de limitation assure, d'autre part, un angle d'ouverture déterminé, ici choisi pour correspondre sensiblement à 180°. Dans l'exemple de la figure 2a, on peut voir que le mécanisme de limitation de rotation 6 comporte une goupille de limitation 61 rendue ici solidaire de la lunette 21 de la boîte inférieure 2 et qui coopère avec une rainure 62 ménagée dans le fond 12 de la boîte supérieure 1. Cette goupille de limitation 61 et cette rainure 62 sont partiellement reportées sur les figures 2 et 3. On comprendra qu'en position fermée la goupille 61 est en butée avec une première extrémité 62a de la rainure et qu'en position ouverte cette goupille 61 est amenée en butée avec l'autre extrémité 62b de la rainure 62, la goupille 61 subissant ainsi un déplacement dans la rainure 62 comme indiqué par la flèche C. A titre d'alternative, il est à nouveau bien évident que la goupille de limitation 61 peut être rendue solidaire du fond 12 et qu'une rainure soit ménagée dans la lunette 21. D'autres mécanismes de limitation de rotation peuvent encore être envisagés.In the figure 2a Finally, it is possible to see the rotation limitation mechanism already mentioned above, which is globally marked by the number 6. This limiting mechanism 6 ensures, on the one hand, that the boxes 1, 2 can not be brought into position. open only by rotation of the upper box 1 in a single direction of rotation, here anti-clockwise. This limiting mechanism ensures, on the other hand, a determined opening angle, here chosen to correspond substantially to 180 °. In the example of the figure 2a , it can be seen that the rotation limiting mechanism 6 comprises a limiting pin 61 made here integral with the bezel 21 of the lower box 2 and which cooperates with a groove 62 formed in the bottom 12 of the upper box 1. This pin of limitation 61 and this groove 62 are partially reported on the Figures 2 and 3 . It will be understood that in the closed position the pin 61 abuts with a first end 62a of the groove and in the open position this pin 61 is brought into abutment with the other end 62b of the groove 62, the pin 61 thus undergoing a displacement in the groove 62 as indicated by the arrow C. Alternatively, it is again obvious that the limiting pin 61 can be secured to the bottom 12 and a groove is formed in the bezel 21. Other rotation limiting mechanisms can still be envisaged.

Les figures 4a et 4b permettront maintenant de détailler la configuration et le fonctionnement du mécanisme d'entraînement 5. Sur ces figures, on notera que les éléments qui ne participent pas directement au fonctionnement du mécanisme d'entraînement 5 n'ont pas été illustrés par souci de simplification. Dans les figures 4a et 4b, on retrouve par contre le mobile de transmission 51 déjà mentionné dont l'axe de rotation est confondu avec l'axe de pivotement X des boîtes 1, 2. Dans la figure 4a, on a également indiqué par la flèche A le sens de rotation suivi par la boîte supérieure 1 lors de l'ouverture (par convention, on considérera que l'ouverture est opérée alors que les moyens d'affichage 16, 26 font face à l'observateur) et par la flèche B, le sens de rotation normal du mobile de transmission 51 lorsque celui-ci est entraîné par le mouvement horloger.The Figures 4a and 4b will now allow to detail the configuration and operation of the drive mechanism 5. In these figures, it will be noted that the elements that do not participate directly in the operation of the drive mechanism 5 have not been illustrated for the sake of simplification. In the Figures 4a and 4b on the other hand, there is the already mentioned transmission wheel 51 whose axis of rotation coincides with the axis of rotation X of the boxes 1, 2. figure 4a the direction of rotation followed by the upper box 1 during opening is also indicated by the arrow A (by convention, it will be considered that the opening is made while the display means 16, 26 are facing the 'observer') and the arrow B, the normal direction of rotation of the transmission mobile 51 when it is driven by the watch movement.

Outre le mobile de transmission 51 qui émerge dans chacune des boîtes 1, 2, le mécanisme d'entraînement 5 comporte par ailleurs une roue d'entraînement 53, un plateau 52 ainsi que des moyens de liaison 55, 56 interposés entre la roue d'entraînement 53 et le plateau 52. La roue d'entraînement 53 et le plateau 52 sont montés coaxialement au mobile de transmission 51 et sont disposés avec les moyens de liaison 55, 56 sur une extrémité du mobile de transmission 51 située ici dans la boîte supérieure 1. L'autre extrémité du mobile de transmission 51 est située dans la boîte inférieure 2.In addition to the transmission mobile 51 which emerges in each of the boxes 1, 2, the drive mechanism 5 further comprises a drive wheel 53, a plate 52 and connecting means 55, 56 interposed between the wheel of 53 and the plate 52. The drive wheel 53 and the plate 52 are mounted coaxially with the transmission mobile 51 and are arranged with the connecting means 55, 56 on one end of the transmission mobile 51 located here in the upper box 1. The other end of the transmission mobile 51 is located in the lower box 2.

Comme on peut le voir schématiquement dans la figure 4b, le mobile de transmission 51 est monté entre un pont 120 de la première partie 100 du mouvement se trouvant dans la boîte supérieure 1 et un pont 220 de la seconde partie 200 du mouvement se trouvant dans la boîte inférieure 2. Les références numériques 110 et 210 désignent des ponts additionnels ou platines des deux parties 100 et 200 du mouvement. Le plateau 52 est rendu fixement solidaire du mobile de transmission 51 alors que la roue d'entraînement 53 est montée libre à rotation autour du mobile de transmission 51. On peut voir ici que la roue d'entraînement 53 est retenue axialement entre le plateau 52 et une portée (non référencée) ménagée sur le mobile de transmission 51.As can be seen schematically in the figure 4b , the transmission wheel 51 is mounted between a bridge 120 of the first part 100 of the movement in the upper box 1 and a bridge 220 of the second part 200 of the movement in the lower box 2. The reference numerals 110 and 210 designate additional bridges or decks of the two parts 100 and 200 of the movement. The plate 52 is fixedly secured to the transmission unit 51 while the drive wheel 53 is rotatably mounted around the transmission unit 51. It can be seen here that the drive wheel 53 is held axially between the plate 52 and a range (not referenced) provided on the transmission mobile 51.

La roue d'entraînement 53 est en prise permanente avec la première partie 100 du mouvement horloger, logée dans la boîte supérieure 1. Dans les figures 4a et 4b, on a uniquement illustré une roue d'entraînement 105 faisant partie de la première partie 100 du mouvement horloger avec sa denture 105a en prise avec la denture 53a de la roue d'entraînement 53. On comprendra donc que la roue d'entraînement 53 est continuellement entraînée en rotation sous l'effet de la première partie 100 du mouvement horloger, l'entraînement de cette roue 53 s'effectuant dans le sens de la flèche B. A l'autre extrémité du mécanisme d'entraînement 5, dans la boîte inférieure 2, le mobile de transmission 51 est en prise directe avec la seconde partie 200 du mouvement horloger. En particulier, le mobile de transmission 51 est terminé par une partie formant pignon 51 a en prise directe avec la denture 205a d'une roue 205 faisant partie de la seconde partie 200 du mouvement horloger, située dans la boîte inférieure 2.The drive wheel 53 is in permanent engagement with the first part 100 of the watch movement, housed in the upper box 1. In the Figures 4a and 4b it has only been illustrated a drive wheel 105 forming part of the first part 100 of the watch movement with its toothing 105a engaged with the toothing 53a of the drive wheel 53. It will therefore be understood that the drive wheel 53 is continuously driven in rotation under the effect of the first part 100 of the watch movement, the drive of this wheel 53 being effected in the direction of the arrow B. At the other end of the drive mechanism 5, in the box lower 2, the transmission mobile 51 is in direct contact with the second part 200 of the watch movement. In particular, the transmission mobile 51 is terminated by a pinion portion 51a in direct contact with the toothing 205a of a wheel 205 forming part of the second part 200 of the watch movement, located in the lower box 2.

Les moyens de liaison 55, 56 entre le plateau 52 et la roue d'entraînement 53 sont agencés de sorte que le plateau 52 est normalement entraîné en rotation par l'intermédiaire de la roue d'entraînement 53 lorsque les boîtes 1, 2 occupent la position fermée et de sorte que l'entraînement en rotation du plateau 52 par la roue d'entraînement 53 est interrompu lorsque les boîtes sont amenées en position ouverte. Plusieurs solutions peuvent être envisagées pour remplir cette fonction. Une solution particulièrement simple et avantageuse est illustrée dans les dessins.The connecting means 55, 56 between the plate 52 and the drive wheel 53 are arranged so that the plate 52 is normally rotated by means of the drive wheel 53 when the boxes 1, 2 occupy the position. closed position and so that the rotation drive of the plate 52 by the drive wheel 53 is interrupted when the boxes are brought to the open position. Several solutions can be envisaged to fulfill this function. A Particularly simple and advantageous solution is illustrated in the drawings.

Dans les figures 4a et 4b, on peut ainsi voir que la roue d'entraînement 53 porte une goupille 55 disposée en position excentrée par rapport à l'axe de pivotement X et dont une extrémité est engagée de manière coulissante dans une rainure 56 ménagée dans le plateau 52 et qui présente un tracé en arc de cercle. On comprendra que la goupille 55 pourrait alternativement être placée sur le plateau 52 et la rainure 56 ménagée sur la roue d'entraînement 53. En tous les cas, l'entraînement en rotation du plateau 52 par la roue d'entraînement 53 est assuré par butée de la goupille 55 contre une extrémité de la rainure 56 comme cela est clairement illustré dans la figure 4a. Lorsque les boîtes 1, 2 sont amenées en position ouverte, la goupille 55 subit un déplacement dans la rainure 56, interrompant ainsi la butée de la goupille 55 contre l'extrémité de la rainure 56.In the Figures 4a and 4b it can thus be seen that the drive wheel 53 carries a pin 55 arranged in an eccentric position with respect to the pivot axis X and one end of which is slidably engaged in a groove 56 formed in the plate 52 and which presents a circular arc pattern. It will be understood that the pin 55 could alternatively be placed on the plate 52 and the groove 56 formed on the drive wheel 53. In any case, the rotation drive of the plate 52 by the drive wheel 53 is ensured by stop the pin 55 against one end of the groove 56 as is clearly illustrated in the figure 4a . When the boxes 1, 2 are brought to the open position, the pin 55 undergoes a movement in the groove 56, thus interrupting the stop of the pin 55 against the end of the groove 56.

En position fermée, lorsque les deux boîtes sont superposées, on comprendra donc que la roue d'entraînement 53 entraîne en rotation le plateau 52 et le mobile de transmission 51, assurant ainsi la liaison cinématique entre la première partie 100 et la seconde partie 200 du mouvement. Dès que la boîte supérieure 1 commence à être pivotée par rapport à la boîte inférieure 2 dans le sens de rotation indiqué par la flèche A, l'entraînement du plateau 52 et du mobile de transmission 51 est immédiatement interrompu, interrompant par la même occasion la liaison cinématique entre les deux parties 100, 200 du mouvement. A ce moment, on comprendra donc que le synchronisme entre les deux parties du mouvement, donc aussi entre les premiers et seconds moyens d'affichage 16, 26, est interrompu et les seconds moyens d'affichage 26 peuvent prendre du retard par rapport aux premiers moyens d'affichage 16.In the closed position, when the two boxes are superimposed, it will therefore be understood that the drive wheel 53 rotates the plate 52 and the transmission mobile 51, thus ensuring the kinematic connection between the first portion 100 and the second portion 200 of the movement. As soon as the upper box 1 begins to be pivoted relative to the lower box 2 in the direction of rotation indicated by the arrow A, the drive of the plate 52 and the transmission mobile 51 is immediately interrupted, thereby interrupting the kinematic connection between the two parts 100, 200 of the movement. At this time, it will therefore be understood that the synchronism between the two parts of the movement, therefore also between the first and second display means 16, 26, is interrupted and the second display means 26 may lag behind the first display means 16.

En position ouverte, la roue d'entraînement 53 est toutefois toujours entraînée en rotation par la première partie 100 du mouvement. La goupille 55 se déplacera donc dans la rainure 56 en direction de l'extrémité de la rainure 56 où cette goupille était précédemment en butée. Après un certain laps de temps qui dépend de la vitesse de rotation de la roue d'entraînement 53 et des dimensions de la rainure 56, la goupille 55 arrivera à nouveau en butée contre l'extrémité de la rainure 56. Tant que les boîtes 1, 2 restent en position ouverte, une erreur de synchronisme entre les moyens d'affichage 16, 26 sera donc engendrée, cette erreur s'accroissant au cours du temps pour atteindre une valeur déterminée dès lors que la goupille 55 est à nouveau amenée en butée contre l'extrémité de la rainure 56.In the open position, the drive wheel 53 is, however, always rotated by the first part 100 of the movement. The pin 55 will therefore move in the groove 56 towards the end of the groove 56 where the pin was previously abutted. After a certain period of time depending on the speed of rotation of the drive wheel 53 and the dimensions of the groove 56, the pin 55 will again abut against the end of the groove 56. As long as the boxes 1 , 2 remain in the open position, a synchronism error between the display means 16, 26 will be generated, this error increasing over time to reach a determined value when the pin 55 is again brought into abutment against the end of groove 56.

Cette erreur de synchronisme (ou retard) est cependant totalement compensée et rattrapée lors de la fermeture des boîtes 1, 2. En effet, lors de la fermeture des boîtes 1, 2 (par rotation de la boîte supérieure 1 dans un sens opposé au sens d'ouverture), la goupille 55 est à nouveau amenée en butée contre l'extrémité de la rainure 56 (si ce n'était pas déjà le cas). Par la même occasion, le plateau 52 et le mobile d'entraînement 51 subissent un déplacement angulaire dans le sens de la flèche B qui correspond au déplacement angulaire de la goupille 55 dans la rainure 56 (dans le sens de la flèche B) depuis que la liaison cinématique a été interrompue, c'est-à-dire depuis l'ouverture des boîtes 1, 2.This synchronism error (or delay) is however fully compensated and caught when closing the boxes 1, 2. Indeed, when closing the boxes 1, 2 (by rotation of the upper box 1 in a direction opposite to the sense opening), the pin 55 is again brought into abutment against the end groove 56 (if it was not already the case). At the same time, the plate 52 and the drive wheel 51 undergo angular displacement in the direction of the arrow B which corresponds to the angular displacement of the pin 55 in the groove 56 (in the direction of the arrow B) since the kinematic connection has been interrupted, that is to say since the opening of the boxes 1, 2.

Lors de l'ouverture et de la fermeture des boîtes, la goupille 55 subit un déplacement angulaire correspondant à l'angle d'ouverture des boîtes dans un sens puis dans l'autre. Les opérations d'ouverture et de fermeture n'engendrent donc au final aucun retard ou perte de synchronisme entre les premiers et seconds moyens d'affichage 16 et 26. Le retard est uniquement dû au temps qui s'est écoulé depuis l'interruption de la liaison cinématique et ce retard est totalement rattrapé lors de la fermeture en raison du déplacement angulaire relatif de la goupille 55 par rapport à la rainure 56. Au maximum, le plateau 52 et le mobile de transmission 51 subiront lors de la fermeture un déplacement angulaire forcé qui est équivalent à l'angle d'ouverture des boîtes, c'est-à-dire 180° dans cet exemple.When opening and closing the boxes, the pin 55 undergoes an angular displacement corresponding to the opening angle of the boxes in one direction and then in the other. The opening and closing operations therefore in the end result in no delay or loss of synchronism between the first and second display means 16 and 26. The delay is solely due to the time which has elapsed since the interruption of the kinematic connection and this delay is fully caught during the closing due to the relative angular displacement of the pin 55 relative to the groove 56. At most, the plate 52 and the mobile transmission 51 will undergo during closing an angular displacement forced which is equivalent to the opening angle of the boxes, that is to say 180 ° in this example.

On comprendra que les dimensions de la rainure 56 sont choisies pour permettre à la goupille de se déplacer lors de l'ouverture des boîtes sans venir en contact avec l'autre extrémité de la rainure 56. En d'autres termes, la rainure 56 présente un angle de développement supérieur à l'angle d'ouverture des boîtes 1, 2. Dans le cas contraire, le plateau 52 et le mobile de transmission 51 seront partiellement entraînés lors de l'ouverture des boîtes selon un sens de rotation opposé à leur sens de rotation normal, ce qui n'est pas recommandable. Dans le cas d'espèce donc, l'angle de développement de la rainure 56 est légèrement supérieur à l'angle d'ouverture des boîtes, fixé ici à 180°.It will be understood that the dimensions of the groove 56 are chosen to allow the pin to move when opening the boxes without coming into contact with the other end of the groove 56. In other words, the groove 56 has a development angle greater than the opening angle of the boxes 1, 2. In the opposite case, the plate 52 and the transmission mobile 51 will be partially driven when opening the boxes in a direction of rotation opposite to their normal direction of rotation, which is not advisable. In this particular case, the development angle of the groove 56 is slightly greater than the opening angle of the boxes, here fixed at 180 °.

On notera que la durée d'interruption maximale de la liaison cinématique entre les deux parties 100, 200 du mouvement dépend du dimensionnement des mobiles du mouvement et du mécanisme d'entraînement 5 et peut être fixée à volonté à quelques minutes ou quelques heures. Il convient de mentionner que le déplacement angulaire forcé ainsi que les contraintes occasionnées sur les dentures des mobiles lors de la fermeture ne constituent pas un réel problème.Note that the maximum interruption time of the kinematic link between the two parts 100, 200 of the movement depends on the sizing of the movement of the movement and the drive mechanism 5 and can be fixed at will to a few minutes or hours. It should be mentioned that the forced angular displacement as well as the constraints on the teeth of the mobiles during the closing is not a real problem.

On comprendra de manière générale que diverses modifications et/ou améliorations évidentes pour l'homme du métier peuvent être apportées aux modes de réalisation décrits dans la présente description sans sortir du cadre de l'invention défini par les revendications annexées. Ainsi, un certain nombre des solutions mécaniques décrites, en particulier pour la retenue mécanique des deux boîtes, pour la limitation de l'angle d'ouverture des boîtes et pour la réalisation de la fonction de débrayage du mécanisme d'entraînement, peuvent être remplacées par toute autre solution mécanique fonctionnellement équivalente. Il paraît par exemple parfaitement envisageable de faire appel à des solutions de type à cliquet pour réaliser la fonction de débrayage du mécanisme d'entraînement. Les solutions décrites apparaissent cependant préférables tant du point de vue de leur simplicité que de leur robustesse.It will be understood in general that various modifications and / or improvements obvious to those skilled in the art can be made to the embodiments described in the present description without departing from the scope of the invention defined by the appended claims. Thus, a certain number of the mechanical solutions described, in particular for the mechanical retention of the two boxes, for limiting the opening angle of the boxes and for carrying out the disengagement function of the drive mechanism, can be replaced by any other functionally equivalent mechanical solution. It seems for example perfectly possible to use ratchet type solutions to perform the disengagement function of the drive mechanism. The solutions described appear however preferable both from the point of view of their simplicity and their robustness.

Claims (13)

  1. Timepiece comprising a body forming a case inside which is accommodated a clockwork-movement, said body having at least two separate faces on which are respectively disposed first and second display means (16, 26) driven by said clockwork-movement,
    characterised in that said body forming a case comprises an upper case (1), which has a front face having said first display means (16) and a lower case (2), which has a front face having said second display means (26),
    said cases (1, 2) being pivotally mounted with respect to each other around a pivoting axis (X) which is substantially perpendicular to the general plane of said cases and able to occupy a first position, termed closed, in which the upper case (1) is superposed on said lower case (2) and masks at least partially the front face of the lower case, and a second position, termed open, in which the upper case (1) is pivoted relative to the lower case (2) in order to uncover at least a portion of the front face of the latter,
    said clockwork-movement comprising first and second portions (100, 200) accommodated respectively in the upper (1) and lower (2) cases to drive said first and second display means (16, 26), respectively, and a drive mechanism (5) ensuring a kinematic link between the first and second portions (100, 200) of the clockwork-movement.
  2. Timepiece according to claim 1, characterised in that said drive mechanism (5) is arranged to ensure an interruption of the kinematic link between the first and second portions (100, 200) of the clockwork-movement when said cases (1, 2) are put in said open position.
  3. Timepiece according to claim 1, characterised in that said drive mechanism (5) includes a moving transmission part (51) which has an axis merged with said pivoting axis (X) of the cases (1, 2), said moving transmission part (51) comprising a first end located in said upper case (1) and a second end located in said lower case (2),
    and in that said timepiece also includes an essentially tubular retention element (30) having an axis merged with said pivoting axis (X) and crossed by said moving transmission part (51), said retention element (30) being immovably attached to one of said cases (1, 2) and holding the other case axially along said pivoting axis (X) whilst permitting a rotation of said other case relative to the retention element (30).
  4. Timepiece according to claim 3, characterised in that said retention element (30) is attached immovably to one of said cases by means of screwing.
  5. Timepiece according to claim 3, characterised in that said retention element (30) forms or bears an inner raceway of a ball bearing (30, 32).
  6. Timepiece according to claim 3, characterised in that one of said cases has an annular projection (12a), centred on said pivoting axis (X) and crossed by said moving transmission part (51), said projection (12a) being engaged in a corresponding aperture (21 a) provided on the other of said cases, and in that a seal (33) is disposed between said projection (12a) and said aperture (21 a).
  7. Timepiece according to claim 2, characterised in that said drive mechanism (5) includes a moving transmission part (51) which has an axis of rotation merged with said pivoting axis (X), said moving transmission part (51) comprising a first end located in said upper case (1) and a second end located in said lower case (2),
    in that said cases are brought into the open position by rotating said upper case (1) relative to said lower case (2) in a first direction of rotation (A),
    and in that said moving transmission part (51) is driven in rotation by the clockwork-movement in a second direction of rotation (B) which is opposite from the first (A),
    said drive mechanism (5) being arranged to interrupt the driving in rotation of said moving transmission part (51) when said cases are placed in the open position and to re-establish the driving in rotation of said moving transmission part (51) when said cases are brought into the closed position.
  8. Timepiece according to claim 7, characterised in that said drive mechanism (5) is also arranged to make up for an error in synchronism between said first and second display means when said cases are brought into the closed position.
  9. Timepiece according to claim 8, characterised in that said drive mechanism (5) also includes, mounted coaxially with said moving transmission part (51):
    a driving wheel (53) mounted freely rotating on said moving transmission part (51), engaging with said first portion (100) of the clockwork-movement and driven in rotation in said second direction of rotation (B); and
    a plate (52) which is immovably attached to said moving transmission part (51) and capable of being driven in rotation by said driving wheel (53) in said second direction of rotation (B),
    said moving transmission part (51) engaging via its second end with said second portion (200) of the clockwork-movement,
    said driving wheel (53) and said plate (52) being mechanically interlinked by linkage means (55, 56) which are arranged in such a way that said plate (52) is normally driven in rotation by means of said driving wheel (53) when said cases (1, 2) occupy said first closed position, and in such a way that the driving in rotation of said plate (52) by said driving wheel (53) is interrupted when said cases (1, 2) are placed in the open position.
  10. Timepiece according to claim 9, characterised in that said linkage means (55, 56) include a pin (55) which is immovably attached to said driving wheel (53) or said plate (52), disposed in an off-centre position relative to said pivoting axis (X) and one end of which is engaged in a groove (56) provided in said plate (52) or in said driving wheel (53), respectively, and having an arcuate shape,
    the driving in rotation of said plate (52) by the driving wheel (53) being ensured by stopping said pin (55) against an end of said groove (56),
    said pin (55) undergoing a displacement in said groove (56) when said cases (1, 2) are brought into the open position, thus interrupting the stopping of the pin (55) against said end of the groove (56).
  11. Timepiece according to any one of claims 1 to 10, characterised in that it also includes a rotation limitation mechanism (6) for limiting the angle of opening of said cases (1, 2) to a specific value, preferably 180°.
  12. Timepiece according to any one of claims 1 to 10, characterised in that the pivoting axis (X) of the cases is located between twelve o'clock and three o'clock.
  13. Timepiece according to any of claims 1 to 10, forming a wrist-watch, characterised in that means (4) for attaching said body to a wristlet are arranged on the lower case (2).
EP20040020747 2003-09-08 2004-09-01 Timepiece comprising two watch-cases able to pivot one with respect to the other Active EP1513031B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20040020747 EP1513031B1 (en) 2003-09-08 2004-09-01 Timepiece comprising two watch-cases able to pivot one with respect to the other

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP03077820 2003-09-08
EP03077820A EP1513030A1 (en) 2003-09-08 2003-09-08 Timepiece comprising two watch-cases able to pivot one with respect to the other
EP20040020747 EP1513031B1 (en) 2003-09-08 2004-09-01 Timepiece comprising two watch-cases able to pivot one with respect to the other

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EP1513031A1 EP1513031A1 (en) 2005-03-09
EP1513031B1 true EP1513031B1 (en) 2010-02-10

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Publication number Priority date Publication date Assignee Title
ATE513254T1 (en) 2009-02-10 2011-07-15 Complitime Sa CLOCK
CN113467216B (en) * 2021-06-30 2022-07-08 深圳市喜丽时钟表文化传播有限公司 Button and wrist-watch of dustproof and waterproof high-efficient protection

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Publication number Priority date Publication date Assignee Title
CH655633GA3 (en) * 1984-07-03 1986-05-15 Wristwatch including a compass

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