EP2990881B1 - Clockwork - Google Patents

Clockwork Download PDF

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Publication number
EP2990881B1
EP2990881B1 EP14182702.2A EP14182702A EP2990881B1 EP 2990881 B1 EP2990881 B1 EP 2990881B1 EP 14182702 A EP14182702 A EP 14182702A EP 2990881 B1 EP2990881 B1 EP 2990881B1
Authority
EP
European Patent Office
Prior art keywords
support
toothing
timepiece movement
movement
wheel
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.)
Active
Application number
EP14182702.2A
Other languages
German (de)
French (fr)
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EP2990881A1 (en
Inventor
Carole Kasapi
Patrick Pichot
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.)
Cartier International AG
Original Assignee
Cartier International AG
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
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Priority to EP14182702.2A priority Critical patent/EP2990881B1/en
Publication of EP2990881A1 publication Critical patent/EP2990881A1/en
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Publication of EP2990881B1 publication Critical patent/EP2990881B1/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
    • G04B45/00—Time pieces of which the indicating means or cases provoke special effects, e.g. aesthetic effects
    • G04B45/04—Time pieces with invisible drive, e.g. with hands attached to a rotating glass disc
    • 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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/20—Compensation of mechanisms for stabilising frequency
    • G04B17/28—Compensation of mechanisms for stabilising frequency for the effect of imbalance of the weights, e.g. tourbillon
    • G04B17/285—Tourbillons or carrousels
    • 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
    • G04B27/00—Mechanical devices for setting the time indicating means
    • G04B27/001—Internal gear therefor, e.g. for setting the second hand or for setting several clockworks

Definitions

  • the present invention relates to a clockwork movement, more particularly to a movement in which the barrel, part of the finishing gear train and the regulating member are carried by a rotating support.
  • the rotating support is in the form of two transparent trays located above the fixed plate of the movement and pivotally mounted around a fixed center part by means of bearings. Between the two plates are mounted the barrel and a whirlwind including the regulating organ. The barrel is engaged with a toothing of the center piece and thus causes the rotating support rotating during its disarming. A fixed center wheel with internal teeth meshes with an average transmission which meshes with a pinion integral with the tourbillon cage. In this way, the rotation of the rotating support rotates the vortex. The rotating support performs one revolution per hour.
  • a key is mounted in the bottom of the watch case to allow reassembly and setting the time of movement.
  • the pavement carrying the minute hand is connected to the rotating support by friction and the hour hand by a timer wheel located under the fixed plate.
  • the key is connected by a gear to the roadway and by another gear to the ratchet of the barrel.
  • the friction between the roadway and the rotating support is effective during the normal (horometric) operation of the movement but gives way when the roadway is rotated by the user for setting the time of the movement.
  • a disadvantage of this movement lies in the fact that, given the great inertia of the rotating support equipped with the barrel and the vortex, the friction between the roadway and the rotating support is difficult to adjust.
  • the strong torque applied by the rotating support requires a sufficiently strong friction. But too much friction makes it harder to set the time.
  • the present invention aims primarily to provide a watch movement that does not have the aforementioned disadvantage relating to the adjustment of the friction.
  • the disengaging device does not require friction.
  • the assembly and the adjustment of the movement are thus greatly facilitated.
  • the first and second teeth are part of a center mobile which is fixed to the central part of the rotary member.
  • Said cogwheel is typically a part of the gear train of the movement. It may comprise a mobile of average meshing with the second toothing and a mobile of second meshing with the mobile of average and with an escape mobile of the regulating organ.
  • Said at least one time display member may comprise a minute indicator member integral with the support and an hour indicator member kinematically connected to the support. In this case, the media performs one revolution per hour.
  • the first and second teeth are typically distinct but in a particular embodiment they may be one and the same toothing.
  • the frame has a through opening along said axis in which are located the support and the rotary member; the support is transparent; the rotary member comprises a transparent disc secured to the first and second teeth and provided with a peripheral toothing; and the locking device is mounted in the frame, out of the through opening, and is arranged to cooperate with the peripheral toothing.
  • the diameter of the peripheral toothing is greater than the diameter of the through opening.
  • the support and the transparent disk are for example sapphire.
  • the locking device is arranged to be controlled by axial displacements of a winding stem movement.
  • the locking member may comprise at least one resiliently deformable portion in the event of impact to allow the support zone of the jumper to momentarily exit the toothing of the star when the winding stem is in an axial position other than the axial position of time setting.
  • the locking member may comprise at least one arm arranged to retain a projecting element carried by the jumper when the winding stem is in an axial position other than the axial position of time setting and not to retain the element protruding when the winding stem is in the axial position of setting time.
  • said at least one arm is elastic.
  • the star can be secured to a pinion which meshes with the rotary member.
  • a watch movement typically a wristwatch movement
  • the frame 1 comprises in particular an annular plate 2 and bridges 3 fixed on the plate 2.
  • Four transparent disks 4, 5, 6, 7, for example sapphire, are mounted in the central through opening 8 defined by the frame 1 of so as to be able to pivot about the axis A of the central opening 8 and the movement.
  • Each disk 4, 5, 6, 7 constitutes the central and main part of a toothed wheel and is assembled, for example by gluing, by driving or by the method described in the patent application.
  • the disc 4, called “minute disc” or “support disc”, is mounted in the through opening 8 via a bearing, typically a ball bearing.
  • the outer ring 9 of the bearing is fixed to the plate 2 and thus part of the frame 1.
  • the inner ring 10 of the bearing is fixed around the periphery of the minute disc 4, for example by gluing or driving, and the toothing 4a is fixed on this inner ring 10, for example by screwing.
  • On the minute disc 4, in the through opening 8 are mounted off-center barrel, part of the finishing train and the regulating member of the movement.
  • the barrel designated by the reference 11, comprises a barrel drum 12 provided with a toothing 13 at its periphery and housing a motor spring, the drum 12 being mounted around a barrel shaft 14
  • Said part of the finishing train comprises an average wheel 15 and a second wheel 16.
  • the regulating member comprises a balance spring 17 and an escapement, the escapement comprising an escapement wheel 18 and an anchor 19.
  • the wheel of the average wheel 15 meshes with the pinion of the second wheel 16, the wheel of which meshes with the pinion of the escape wheel 18.
  • Holes in the disk of minutes 4 receive stones 20 in which pivots of the wheel pivots.
  • the opposed pivots of the barrel shaft 14 and the medium, second and exhaust mobiles 15, 16, 18 are pivoted in stones 21 located in holes that entails bridges attached to the minute disc 4 by means of pillars 22.
  • said bridges comprise a gear and barrel bridge 23, two balance bridges 24 respectively receiving the two pivots of the axis of the pendulum and an anchor bridge 25.
  • the minute disc 4 is driven at a rate of one revolution per hour.
  • a needle minute indicator 26 is integral with the minute disc 4. This needle 26 is for example in one piece with one of the bridges 23, 24, namely the wheel and barrel bridge 23, as shown in the figures.
  • a counterweight 27 (cf. figure 5 ) can be mounted on the periphery of the minute disc 4 to rebalance it.
  • the disk 5, called “disengagement disc”, remains fixed during the normal operation of the movement and carries the center wheel 28 of the finishing train, located in the central portion of the through opening 8 along the axis A.
  • the center mobile 28 is for example fixed by means of a screw 29 to a metal ring 30 driven or glued in a central hole of the clutch disc 5.
  • the minute disc 4 pivots around the center mobile 28.
  • the mobile center 28 comprises a center pinion 28a and a center wheel 28b integral with each other.
  • the toothing of the center pinion 28a is engaged with the toothing 13 of the barrel 11.
  • the toothing of the center wheel 28b is in its engagement with the toothing of the pinion of the mobile of average 15.
  • the center 28 could comprise a single toothing that would be engaged both with the toothing 13 of the barrel 11 and with the toothing of the pinion of the mobile of average 15.
  • the clutch disc 5 is associated with a mechanism for setting the time which will be described later.
  • the shaft 14 of the barrel 11 carries a ratchet 31 (see in particular figure 4 ) on which a pawl 32 acts to prevent it from rotating in one direction.
  • the pawl 32 is fixed to the gear wheel and barrel 23, and is therefore integral with the minute disc 4.
  • the ratchet 31 meshes with an intermediate wheel 33 mounted on the center mobile 28 freely in rotation around of the axis A relative to the mobile center 28.
  • the disc 6, said "winding disc” is attached to the end of a barrel 34 of the intermediate wheel 33 by means for example of a screw 35.
  • the winding disk 6 is part of a movement winding mechanism which will be described later.
  • the intermediate wheel 33 and the disc of reassembly 6 which is integral with it are rotated by the rotation of the minute disk 4 due to the meshing between the ratchet 31 and the intermediate wheel 33, which protects the ratchet 31 and its pawl 32 against the risks of broken.
  • the disc 7 (cf. figures 3 and 5 ), said “hours disk”, is mounted around a guide tube 36 which is fixed to the gear wheel and barrel 23 and which itself surrounds the barrel 34 of the intermediate wheel 33. In normal operation of the movement the hours disk 7 is driven one turn per 12 hours.
  • An indicator hour hand 37 is integral with this hour 7 disc.
  • the latter is connected to the minute disc 4 by a timer wheel 38 located in the frame 1, out of the through opening 8.
  • the timer wheel 38 comprises three mobiles, the first mobile 39 being engaged with the toothing 7a carried by the hours disk 7, the third mobile 41 being in engagement with the toothing 4a carried by the minute disc 4 and the second mobile 40 connecting the mobiles 39, 41 to one another.
  • the hours disk 7 is also connected to the time setting mechanism which will be described later.
  • the toothings of the center pinion 28a and the barrel 11 are chosen so that the disarming of the barrel 11, more precisely of its mainspring, causes the minute disc 4 to rotate about the axis A at the aforementioned speed of a lathe hour to indicate the minutes by the minute hand 26 secured to the minute disc 4.
  • the teeth of the mobiles 39, 40, 41 of the timer train 38 are chosen so that the rotation of the minute disc 4 rotates the 7 hour disc at the aforementioned speed of one turn per 12 hours, so as to indicate the hours by the hours hand 37 integral with the hour disc 7.
  • each of the peripheral teeth 4a, 5a, 6a, 7a carried by the transparent discs 4, 5, 6, 7 is preferably greater than the diameter (ie the smallest diameter) 8.
  • these teeth 4a, 5a, 6a, 7a can be easily hidden by elements of the frame 1 or by elements (bezel, etc.) of the watch case in which the movement is intended to be mounted, to give the movement or the watch a mysterious appearance, that is to say, to ensure that no visible connection appears between the frame 1 or the watch case and the organs mounted on the disk minutes 4 which are visible through the ice and the bottom of the watch case.
  • neither the mechanism of time setting nor the winding mechanism affect this mysterious character.
  • the winding mechanism comprises (cf. figures 3 , 4 , 6 and 7 ) a winding stem 42 actuated by the user and extending radially.
  • a winding pinion 43 free to rotate relative to the winding stem 42 and a sliding pinion 44 integral in rotation but free in translation between the winding pinion 43 and a setting pinion 45 relative to the winding stem 42.
  • the translation of the sliding pinion 44 is controlled by a rocker 46 subjected to the action of a return spring 47.
  • the latch 46 is controlled by a finger 48 of a pull tab 49 itself controlled by the winding rod 42 in a conventional manner.
  • the surface of the rocker 46 with which the finger 48 engages comprises a hump 50 and two recesses 51, 52 to define three different positions of the rocker 46 corresponding to three axial positions of the winding stem 42.
  • a first axial position P1 or pushed position, of the winding stem 42 (cf. figure 7 ) the finger 48 is in the hollow 51 which keeps the sliding pinion 44 in a position where it meshes neither with the winding pinion 43 nor with the setting pinion 45.
  • a rotation of the winding stem 42 has no effect on the movement and the rotation of the winding disc 6 caused by the rotation of the minute disc 4 is not communicated to the winding stem 42.
  • the position P1 is the position normal operation of the movement.
  • a second axial position P2 or first drawn position, of the winding stem 42 (cf. figure 8 ) the finger 48 is on the hump 50 which keeps the sliding pinion 44 in a position where it meshes with the time setting pinion 45.
  • the movement can be set to the time by a rotation of the winding stem 42 in one direction or the other.
  • a third axial position P3, or second drawn position, of the winding stem 42 (cf. figure 9 ) the finger 48 is in the recess 52 which plates a Breguet toothing of the sliding pinion 44 against a Breguet toothing of the winding pinion 43. In this position P3 a rotation of the winding stem 42 in a predetermined direction back the barrel 11.
  • a rotation of the winding stem 42 in said predetermined direction causes the winding pinion 43 to turn, which, by means of references 53 (cf. figure 4 ), rotates a mobile 54 which meshes with the toothing 6a carried by the winding disc 6.
  • the winding disc 6 rotates the ratchet 31 via the intermediate wheel 33 which raises the barrel 11.
  • the time setting mechanism comprises the winding stem 42, with its elements 44, 46, 49 associated, and the hour setting pinion 45.
  • the latter meshes with the toothing 7a carried by the hour disc 7 (cf. figure 5 ).
  • a rotation of the winding stem 42 when it is in the axial position P2 rotates the setting pinion 45, which rotates the hour disk 7 (and with it the hour hand 37), the minute wheel 38 and the minute disc 4 (and with it the minute hand 26).
  • the time setting mechanism is associated with a disengaging device which prevents the time setting mechanism from exercising. a couple on the wheel 15, 16 and the barrel 11.
  • the disengaging devices conventionally associated with the time-setting mechanisms consist of a simple friction which is overcome during the time setting.
  • the disengaging device comprises the clutch disc 5 and a locking device.
  • the blocking device is illustrated in Figures 6 to 9 . Like the elements 43-49, it is mounted in the frame 1, out of the through opening 8, and comprises a control lever 55 articulated by one of its ends to the pull tab 49 and defining at its other end a portion
  • the cylindrical portion 56 is housed in a U-shaped housing 57 of a blocker 58.
  • the blocker 58 is a pivotally mounted member about an axis B parallel to the axis A and having two arms 59 in the form of C whose respective concave surfaces face each other.
  • Each arm 59 is joined to a rigid portion 60 of the blocker 58 at one of its ends.
  • the other end of each arm 59 is free.
  • the respective free ends of the arms 59 leave a gap 61 between them.
  • a star 62 which is free to rotate relative to the blocker 58.
  • the bearing zone 63 of a jumper 64 is held in contact with the toothing of the star 62 by a spring of 65.
  • the jumper 64 close to its support zone 63 the jumper 64 carries a pin 66 which extends in a direction parallel to the axis B, that is to say perpendicular to the pivot plane of the jumper 64 and the plan of the frame 1.
  • the star 62 is integral in rotation with a pinion 67 (cf. figure 6 ) which meshes with the toothing 5a carried by the clutch disc 5.
  • the angular position of the blocker 58 is controlled by the control lever 55, itself controlled by the pull tab 49, itself controlled by the axial position of the winding stem 42.
  • the pin 66 of the jumper 64 is retained by one of the arms 59, so that the bearing zone 63 of the jumper 64 can not leave the toothing of the star 62.
  • any rotation of the star 62 and thus of the clutch disc 5 is blocked.
  • the P2 position (cf.
  • the pin 66 is opposite the empty space 61 and is therefore not retained by none of the arms 59, so that the star 62 can rotate by jumping the jumper 64, thus allowing the release disc 5 to turn too.
  • a rotation of the winding stem 42 to set the time of the movement rotates the minute disk 4 through the time setting pinion 45, the hours disk 7 and the gear wheel.
  • the clutch disc 5 being free, it rotates due to the meshing between the barrel 11 and the center wheel 28 so that the time setting mechanism does not drive the barrel 11 and the gear 15, 16 in rotation relative to the minutes disc 4.
  • Such a release is reliable and robust, and does not require to adjust a friction during the assembly of the movement.
  • the arms 59 are elastic so that, in the event of shock received by the movement during its normal operation, the jumper 64 allows a tooth to pass through the star 62 and thus to avoid breakage at the barrel 11 and the work train 28, 15, 16.
  • the locking device 55-67 is particularly advantageous because, due to the gear reduction produced by the gear formed by the pinion 67 and the toothing 5a of the rotary member to be blocked (disengaging disc 5), it makes it possible to block the rotating member effectively and robustly even if it has a high inertia.
  • this locking device provides protection against shocks.
  • the jumper 64 could be a leaf spring comprising at its free end the bearing zone 63 and the pin 66.
  • the lever of control 55 could be removed and the blocker 58 could be directly in contact with the pull tab 49.
  • the release disc 5 could be replaced by a wheel that would connect the center wheel 28 to the pinion 67 integral with the star 62.
  • the indicator hands 26, 37 could be printed on the respective disks 4, 7.
  • Another modification could be to invert the functions of the minute disc 4 and the hour disc 7, that is to say to make the disc 4 rotates at a rate of one revolution per twelve hours to indicate the hours and that the disc 7 turns to because of one lap per hour to indicate the minutes.

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

Description

La présente invention concerne un mouvement d'horlogerie, plus particulièrement un mouvement dans lequel le barillet, une partie du rouage de finissage et l'organe réglant sont portés par un support tournant.The present invention relates to a clockwork movement, more particularly to a movement in which the barrel, part of the finishing gear train and the regulating member are carried by a rotating support.

Un tel mouvement est décrit dans le brevet CH 693833 . Dans ce dernier, le support tournant est sous la forme de deux plateaux transparents situés au-dessus de la platine fixe du mouvement et montés pivotants autour d'une pièce de centre fixe au moyen de roulements. Entre les deux plateaux sont montés le barillet et un tourbillon comprenant l'organe réglant. Le barillet est en prise avec une denture de la pièce de centre et entraîne ainsi le support tournant en rotation pendant son désarmage. Une roue de centre fixe à denture intérieure engrène avec une transmission de moyenne qui engrène avec un pignon solidaire de la cage de tourbillon. De la sorte, la rotation du support tournant fait tourner le tourbillon. Le support tournant effectue un tour par heure. Une clé est montée dans le fond de la boîte de montre pour permettre le remontage et la mise à l'heure du mouvement. La chaussée qui porte l'aiguille des minutes est reliée au support tournant par une friction et à l'aiguille des heures par un rouage de minuterie situé sous la platine fixe. La clé est reliée par un engrenage à la chaussée et par un autre engrenage au rochet du barillet. La friction entre la chaussée et le support tournant est effective pendant le fonctionnement normal (horométrique) du mouvement mais cède lorsque la chaussée est entraînée en rotation par l'utilisateur pour la mise à l'heure du mouvement.Such a movement is described in the patent CH 693833 . In the latter, the rotating support is in the form of two transparent trays located above the fixed plate of the movement and pivotally mounted around a fixed center part by means of bearings. Between the two plates are mounted the barrel and a whirlwind including the regulating organ. The barrel is engaged with a toothing of the center piece and thus causes the rotating support rotating during its disarming. A fixed center wheel with internal teeth meshes with an average transmission which meshes with a pinion integral with the tourbillon cage. In this way, the rotation of the rotating support rotates the vortex. The rotating support performs one revolution per hour. A key is mounted in the bottom of the watch case to allow reassembly and setting the time of movement. The pavement carrying the minute hand is connected to the rotating support by friction and the hour hand by a timer wheel located under the fixed plate. The key is connected by a gear to the roadway and by another gear to the ratchet of the barrel. The friction between the roadway and the rotating support is effective during the normal (horometric) operation of the movement but gives way when the roadway is rotated by the user for setting the time of the movement.

Un inconvénient de ce mouvement réside dans le fait que, compte tenu de la grande inertie du support tournant équipé du barillet et du tourbillon, la friction entre la chaussée et le support tournant est difficile à régler. Le fort couple qu'applique le support tournant nécessite une friction suffisamment forte. Mais une friction trop forte rend plus difficile la mise à l'heure.A disadvantage of this movement lies in the fact that, given the great inertia of the rotating support equipped with the barrel and the vortex, the friction between the roadway and the rotating support is difficult to adjust. The strong torque applied by the rotating support requires a sufficiently strong friction. But too much friction makes it harder to set the time.

De plus, sur le plan esthétique, bien que le support tournant soit transparent, il apparaît impossible ou en tout cas difficile d'obtenir un effet dit « mystérieux », c'est-à-dire de supprimer les liaisons visibles entre les organes portés par le plateau tournant et les parties extérieures fixes. L'obtention d'un tel effet mystérieux est empêchée notamment par le mécanisme de remontage et de mise à l'heure et sa clé.In addition, aesthetically, although the rotating support is transparent, it appears impossible or in any case difficult to obtain a so-called "mysterious" effect, that is to say, to remove the visible connections between the worn organs by the turntable and the fixed outer parts. Obtaining such a mysterious effect is prevented in particular by the winding mechanism and setting time and its key.

La présente invention vise en premier lieu à proposer un mouvement d'horlogerie qui ne présente pas l'inconvénient susmentionné relatif au réglage de la friction.The present invention aims primarily to provide a watch movement that does not have the aforementioned disadvantage relating to the adjustment of the friction.

A cette fin il est prévu un mouvement d'horlogerie comprenant :

  • un bâti,
  • une première denture et une deuxième denture qui sont fixes par rapport au bâti en fonctionnement normal du mouvement d'horlogerie,
  • un support monté pivotant par rapport au bâti autour d'un axe perpendiculaire au plan du bâti, le support portant un barillet, un rouage et un organe réglant, le barillet engrenant avec la première denture de sorte que le désarmage du barillet entraîne le support en rotation autour dudit axe, le rouage engrenant avec la deuxième denture de sorte que la rotation du support entraîne le rouage en rotation par rapport au support pour entraîner l'organe réglant,
  • au moins un organe d'affichage de l'heure relié cinématiquement au support,
  • un mécanisme de mise à l'heure du mouvement, et
  • un dispositif de débrayage permettant au mécanisme de mise à l'heure de régler la position dudit au moins un organe d'affichage de l'heure sans entraîner le rouage en rotation par rapport au support,
caractérisé en ce que le dispositif de débrayage comprend :
  • un organe rotatif monté pivotant par rapport au bâti autour dudit axe et solidaire des première et deuxième dentures, et
  • un dispositif de blocage pour bloquer l'organe rotatif en rotation pendant le fonctionnement normal du mouvement et pour laisser l'organe rotatif libre en rotation pendant une mise à l'heure.
For this purpose a watch movement is provided comprising:
  • a frame,
  • a first toothing and a second toothing that are fixed relative to the frame in normal operation of the watch movement,
  • a support pivotally mounted relative to the frame about an axis perpendicular to the plane of the frame, the support carrying a barrel, a cog and a regulating member, the barrel meshing with the first toothing so that disarming the barrel causes the support in rotation about said axis, the gear meshing with the second toothing so that the rotation of the support causes the gear in rotation relative to the support for driving the regulating member,
  • at least one time display member kinematically connected to the support,
  • a mechanism for setting the time of movement, and
  • a disengaging device enabling the time setting mechanism to adjust the position of said at least one time display member without driving the gear in rotation relative to the support,
characterized in that the disengaging device comprises:
  • a rotatable member pivotally mounted relative to the frame about said axis and secured to the first and second teeth, and
  • a locking device for locking the rotational member in rotation during normal operation of the movement and for leaving the rotating member free to rotate during a time setting.

Ainsi, dans la présente invention le dispositif de débrayage ne nécessite pas de friction. L'assemblage et le réglage du mouvement sont donc grandement facilités.Thus, in the present invention the disengaging device does not require friction. The assembly and the adjustment of the movement are thus greatly facilitated.

Dans un mode de réalisation particulier, les première et deuxième dentures font partie d'un mobile de centre qui est fixé à la partie centrale de l'organe rotatif.In a particular embodiment, the first and second teeth are part of a center mobile which is fixed to the central part of the rotary member.

Ledit rouage est typiquement une partie du rouage de finissage du mouvement. Il peut comprendre un mobile de moyenne engrenant avec la deuxième denture et un mobile de seconde engrenant avec le mobile de moyenne et avec un mobile d'échappement de l'organe réglant.Said cogwheel is typically a part of the gear train of the movement. It may comprise a mobile of average meshing with the second toothing and a mobile of second meshing with the mobile of average and with an escape mobile of the regulating organ.

Ledit au moins un organe d'affichage de l'heure peut comprendre un organe indicateur des minutes solidaire du support et un organe indicateur des heures relié cinématiquement au support. Dans ce cas, le support effectue un tour par heure.Said at least one time display member may comprise a minute indicator member integral with the support and an hour indicator member kinematically connected to the support. In this case, the media performs one revolution per hour.

Les première et deuxième dentures sont typiquement distinctes mais dans un mode de réalisation particulier elles peuvent être une seule et même denture.The first and second teeth are typically distinct but in a particular embodiment they may be one and the same toothing.

De préférence, le bâti présente une ouverture traversante le long dudit axe dans laquelle sont situés le support et l'organe rotatif ; le support est transparent ; l'organe rotatif comprend un disque transparent solidaire des première et deuxième dentures et muni d'une denture périphérique ; et le dispositif de blocage est monté dans le bâti, hors de l'ouverture traversante, et est agencé pour coopérer avec la denture périphérique. De préférence également, le diamètre de la denture périphérique est supérieur au diamètre de l'ouverture traversante. De la sorte, le mouvement selon l'invention ou la montre dont il est destiné à faire partie peut être facilement rendu mystérieux.Preferably, the frame has a through opening along said axis in which are located the support and the rotary member; the support is transparent; the rotary member comprises a transparent disc secured to the first and second teeth and provided with a peripheral toothing; and the locking device is mounted in the frame, out of the through opening, and is arranged to cooperate with the peripheral toothing. Also preferably, the diameter of the peripheral toothing is greater than the diameter of the through opening. In this way, the movement according to the invention or the watch which it is intended to be part of can easily be made mysterious.

Le support et le disque transparent sont par exemple en saphir.The support and the transparent disk are for example sapphire.

Typiquement, le dispositif de blocage est agencé pour être commandé par des déplacements axiaux d'une tige de remontoir du mouvement.Typically, the locking device is arranged to be controlled by axial displacements of a winding stem movement.

De préférence, le dispositif de blocage comprend :

  • une étoile montée pivotante autour d'un deuxième axe et reliée cinématiquement à l'organe rotatif,
  • un sautoir comprenant une zone d'appui maintenue élastiquement en contact avec la denture de l'étoile,
  • un organe de blocage monté pivotant autour dudit deuxième axe de manière libre par rapport à l'étoile et dont la position angulaire est commandée par les déplacements axiaux de la tige de remontoir de telle sorte que l'organe de blocage retient le sautoir pour empêcher ladite zone d'appui de sortir de la denture de l'étoile et empêcher ainsi l'étoile et donc l'organe rotatif de tourner lorsque la tige de remontoir est dans une position axiale autre qu'une position axiale de mise à l'heure, et de telle sorte que l'organe de blocage ne retient pas le sautoir, permettant à l'étoile et donc à l'organe rotatif de tourner, lorsque la tige de remontoir est dans la position axiale de mise à l'heure.
Preferably, the blocking device comprises:
  • a star pivoted about a second axis and kinematically connected to the rotary member,
  • a jumper comprising a bearing zone held elastically in contact with the toothing of the star,
  • a locking member pivotally mounted about said second axis freely relative to the star and whose angular position is controlled by the axial displacements of the winding stem so that the locking member retains the jumper to prevent said bearing zone out of the teeth of the star and thus prevent the star and therefore the rotating member from rotating when the winding stem is in an axial position other than an axial position of time setting, and so that the locking member does not retain the jumper, allowing the star and therefore the rotating member to rotate, when the winding stem is in the axial position of setting time.

L'organe de blocage peut comprendre au moins une partie déformable élastiquement en cas de choc pour permettre à la zone d'appui du sautoir de sortir momentanément de la denture de l'étoile lorsque la tige de remontoir est dans une position axiale autre que la position axiale de mise à l'heure.The locking member may comprise at least one resiliently deformable portion in the event of impact to allow the support zone of the jumper to momentarily exit the toothing of the star when the winding stem is in an axial position other than the axial position of time setting.

L'organe de blocage peut comprendre au moins un bras agencé pour retenir un élément saillant porté par le sautoir lorsque la tige de remontoir est dans une position axiale autre que la position axiale de mise à l'heure et pour ne pas retenir l'élément saillant lorsque la tige de remontoir est dans la position axiale de mise à l'heure. De préférence, ledit au moins un bras est élastique.The locking member may comprise at least one arm arranged to retain a projecting element carried by the jumper when the winding stem is in an axial position other than the axial position of time setting and not to retain the element protruding when the winding stem is in the axial position of setting time. Preferably, said at least one arm is elastic.

L'étoile peut être solidaire d'un pignon qui engrène avec l'organe rotatif.The star can be secured to a pinion which meshes with the rotary member.

D'autres caractéristiques et avantages de la présente invention apparaîtront à la lecture de la description détaillée suivante faite en référence aux dessins annexés dans lesquels :

  • la figure 1 est une vue en perspective de dessus d'un mouvement d'horlogerie selon un mode de réalisation préféré de l'invention ;
  • la figure 2 est une vue similaire à celle de la figure 1 mais dans laquelle des ponts d'un bâti du mouvement d'horlogerie ont été enlevés ;
  • la figure 3 est une vue en perspective coupée du mouvement illustré aux figures 1 et 2 ;
  • la figure 4 est une vue en perspective d'un mécanisme de remontage du mouvement illustré aux figures 1 à 3 ;
  • la figure 5 est une vue en perspective d'une partie du mouvement illustré aux figures 1 à 3, montrant notamment la liaison entre l'affichage des heures et l'affichage des minutes ainsi qu'une partie d'un mécanisme de mise à l'heure ;
  • la figure 6 est une vue en perspective partielle du mouvement illustré aux figures 1 à 3, montrant notamment un dispositif de blocage ; et
  • les figures 7 à 9 sont des vues planes montrant notamment le dispositif de blocage dans trois positions différentes.
Other features and advantages of the present invention will appear on reading the following detailed description given with reference to the accompanying drawings in which:
  • the figure 1 is a perspective view from above of a clockwork according to a preferred embodiment of the invention;
  • the figure 2 is a view similar to that of the figure 1 but in which bridges of a frame of the watch movement have been removed;
  • the figure 3 is a cut perspective view of the movement shown in figures 1 and 2 ;
  • the figure 4 is a perspective view of a mechanism for winding the movement illustrated in Figures 1 to 3 ;
  • the figure 5 is a perspective view of a part of the movement shown at Figures 1 to 3 , in particular showing the connection between the display of the hours and the display of the minutes as well as a part of a time-setting mechanism;
  • the figure 6 is a partial perspective view of the movement shown in Figures 1 to 3 , in particular showing a blocking device; and
  • the Figures 7 to 9 are plan views showing in particular the locking device in three different positions.

En référence aux figures 1 à 3, un mouvement d'horlogerie, typiquement un mouvement de montre-bracelet, selon un mode de réalisation préféré de l'invention comprend un bâti 1 de forme annulaire. Le bâti 1 comprend notamment une platine annulaire 2 et des ponts 3 fixés sur la platine 2. Quatre disques transparents 4, 5, 6, 7, par exemple en saphir, sont montés dans l'ouverture centrale traversante 8 définie par le bâti 1 de manière à pouvoir pivoter autour de l'axe A de l'ouverture centrale 8 et du mouvement. Chaque disque 4, 5, 6, 7 constitue la partie centrale et principale d'une roue dentée et est assemblé, par exemple par collage, par chassage ou par le procédé décrit dans la demande de brevet CH 707326 de la présente demanderesse, à une partie annulaire périphérique métallique définissant la denture 4a, 5a, 6a, 7a de la roue dentée. Dans une variante, au lieu d'être assemblées aux disques 4, 5, 6, 7, les dentures 4a, 5a, 6a, 7a pourraient être usinées dans lesdits disques.With reference to Figures 1 to 3 , a watch movement, typically a wristwatch movement, according to a preferred embodiment of the invention comprises a frame 1 of annular shape. The frame 1 comprises in particular an annular plate 2 and bridges 3 fixed on the plate 2. Four transparent disks 4, 5, 6, 7, for example sapphire, are mounted in the central through opening 8 defined by the frame 1 of so as to be able to pivot about the axis A of the central opening 8 and the movement. Each disk 4, 5, 6, 7 constitutes the central and main part of a toothed wheel and is assembled, for example by gluing, by driving or by the method described in the patent application. CH 707326 of the present applicant, to an annular portion metal peripheral defining the toothing 4a, 5a, 6a, 7a of the toothed wheel. In a variant, instead of being assembled to the discs 4, 5, 6, 7, the teeth 4a, 5a, 6a, 7a could be machined in said discs.

Le disque 4, dit « disque des minutes » ou « disque de support », est monté dans l'ouverture traversante 8 par l'intermédiaire d'un roulement, typiquement un roulement à billes. La bague extérieure 9 du roulement est fixée à la platine 2 et fait ainsi partie du bâti 1. La bague intérieure 10 du roulement est fixée autour de la périphérie du disque des minutes 4, par exemple par collage ou chassage, et la denture 4a est fixée sur cette bague intérieure 10, par exemple par vissage. Sur le disque des minutes 4, dans l'ouverture traversante 8, sont montés de manière décentrée le barillet, une partie du rouage de finissage et l'organe réglant du mouvement. De manière bien connue en soi, le barillet, désigné par le repère 11, comprend un tambour de barillet 12 muni d'une denture 13 à sa périphérie et logeant un ressort moteur, le tambour 12 étant monté autour d'un arbre de barillet 14. Ladite partie du rouage de finissage comprend un mobile de moyenne 15 et un mobile de seconde 16. L'organe réglant comprend un balancier-spiral 17 et un échappement, l'échappement comprenant un mobile d'échappement 18 et une ancre 19. La roue du mobile de moyenne 15 engrène avec le pignon du mobile de seconde 16, dont la roue engrène avec le pignon du mobile d'échappement 18. Des trous dans le disque des minutes 4 reçoivent des pierres 20 dans lesquelles pivotent des pivots de l'arbre de barillet 14 et des mobiles de moyenne, de seconde et d'échappement 15, 16, 18. Les pivots opposés de l'arbre de barillet 14 et des mobiles de moyenne, de seconde et d'échappement 15, 16, 18 pivotent dans des pierres 21 situées dans des trous que comportent des ponts fixés au disque des minutes 4 par l'intermédiaire de piliers 22. Dans l'exemple illustré, lesdits ponts comprennent un pont de rouage et de barillet 23, deux ponts de balancier 24 recevant respectivement les deux pivots de l'axe du balancier et un pont d'ancre 25. En fonctionnement normal (horométrique) du mouvement, le disque des minutes 4 est entraîné à raison d'un tour par heure. Une aiguille indicatrice des minutes 26 est solidaire du disque des minutes 4. Cette aiguille 26 est par exemple en une seule pièce avec l'un des ponts 23, 24, à savoir le pont de rouage et de barillet 23, comme visible sur les figures. Un contrepoids 27 (cf. figure 5) peut être monté à la périphérie du disque des minutes 4 pour rééquilibrer ce dernier.The disc 4, called "minute disc" or "support disc", is mounted in the through opening 8 via a bearing, typically a ball bearing. The outer ring 9 of the bearing is fixed to the plate 2 and thus part of the frame 1. The inner ring 10 of the bearing is fixed around the periphery of the minute disc 4, for example by gluing or driving, and the toothing 4a is fixed on this inner ring 10, for example by screwing. On the minute disc 4, in the through opening 8 are mounted off-center barrel, part of the finishing train and the regulating member of the movement. In a well known manner, the barrel, designated by the reference 11, comprises a barrel drum 12 provided with a toothing 13 at its periphery and housing a motor spring, the drum 12 being mounted around a barrel shaft 14 Said part of the finishing train comprises an average wheel 15 and a second wheel 16. The regulating member comprises a balance spring 17 and an escapement, the escapement comprising an escapement wheel 18 and an anchor 19. The wheel of the average wheel 15 meshes with the pinion of the second wheel 16, the wheel of which meshes with the pinion of the escape wheel 18. Holes in the disk of minutes 4 receive stones 20 in which pivots of the wheel pivots. barrel shaft 14 and medium, second and exhaust mobiles 15, 16, 18. The opposed pivots of the barrel shaft 14 and the medium, second and exhaust mobiles 15, 16, 18 are pivoted in stones 21 located in holes that entails bridges attached to the minute disc 4 by means of pillars 22. In the illustrated example, said bridges comprise a gear and barrel bridge 23, two balance bridges 24 respectively receiving the two pivots of the axis of the pendulum and an anchor bridge 25. In normal operation (horometric) of the movement, the minute disc 4 is driven at a rate of one revolution per hour. A needle minute indicator 26 is integral with the minute disc 4. This needle 26 is for example in one piece with one of the bridges 23, 24, namely the wheel and barrel bridge 23, as shown in the figures. A counterweight 27 (cf. figure 5 ) can be mounted on the periphery of the minute disc 4 to rebalance it.

Le disque 5, dit « disque de débrayage », reste fixe pendant le fonctionnement normal du mouvement et porte le mobile de centre 28 du rouage de finissage, situé dans la partie centrale de l'ouverture traversante 8 le long de l'axe A. Le mobile de centre 28 est par exemple fixé au moyen d'une vis 29 à une bague métallique 30 chassée ou collée dans un trou central du disque de débrayage 5. Le disque des minutes 4 pivote autour de ce mobile de centre 28. Le mobile de centre 28 comprend un pignon de centre 28a et une roue de centre 28b solidaires l'un de l'autre. La denture du pignon de centre 28a est en prise avec la denture 13 du barillet 11. La denture de la roue de centre 28b est, elle, en prise avec la denture du pignon du mobile de moyenne 15. Dans une variante, le mobile de centre 28 pourrait comporter une seule denture qui serait en prise à la fois avec la denture 13 du barillet 11 et avec la denture du pignon du mobile de moyenne 15. Le disque de débrayage 5 est associé à un mécanisme de mise à l'heure qui sera décrit plus loin.The disk 5, called "disengagement disc", remains fixed during the normal operation of the movement and carries the center wheel 28 of the finishing train, located in the central portion of the through opening 8 along the axis A. The center mobile 28 is for example fixed by means of a screw 29 to a metal ring 30 driven or glued in a central hole of the clutch disc 5. The minute disc 4 pivots around the center mobile 28. The mobile center 28 comprises a center pinion 28a and a center wheel 28b integral with each other. The toothing of the center pinion 28a is engaged with the toothing 13 of the barrel 11. The toothing of the center wheel 28b is in its engagement with the toothing of the pinion of the mobile of average 15. In a variant, the center 28 could comprise a single toothing that would be engaged both with the toothing 13 of the barrel 11 and with the toothing of the pinion of the mobile of average 15. The clutch disc 5 is associated with a mechanism for setting the time which will be described later.

De manière classique en soi, l'arbre 14 du barillet 11 porte un rochet 31 (cf. notamment figure 4) sur lequel agit un cliquet 32 pour l'empêcher de tourner dans un sens. Dans la présente invention le cliquet 32 est fixé au pont de rouage et de barillet 23, et est donc solidaire du disque des minutes 4. Le rochet 31 engrène avec une roue intermédiaire 33 montée sur le mobile de centre 28 de manière libre en rotation autour de l'axe A par rapport au mobile de centre 28. Le disque 6, dit « disque de remontage », est fixé à l'extrémité d'un canon 34 de cette roue intermédiaire 33 au moyen par exemple d'une vis 35. Le disque de remontage 6 fait partie d'un mécanisme de remontage du mouvement qui sera décrit plus loin. En fonctionnement normal du mouvement, la roue intermédiaire 33 et le disque de remontage 6 qui lui est solidaire sont entraînés en rotation par la rotation du disque des minutes 4 du fait de l'engrènement entre le rochet 31 et la roue intermédiaire 33, ce qui permet de protéger le rochet 31 et son cliquet 32 contre les risques de casse.In a conventional manner, the shaft 14 of the barrel 11 carries a ratchet 31 (see in particular figure 4 ) on which a pawl 32 acts to prevent it from rotating in one direction. In the present invention the pawl 32 is fixed to the gear wheel and barrel 23, and is therefore integral with the minute disc 4. The ratchet 31 meshes with an intermediate wheel 33 mounted on the center mobile 28 freely in rotation around of the axis A relative to the mobile center 28. The disc 6, said "winding disc" is attached to the end of a barrel 34 of the intermediate wheel 33 by means for example of a screw 35. The winding disk 6 is part of a movement winding mechanism which will be described later. In normal operation of the movement, the intermediate wheel 33 and the disc of reassembly 6 which is integral with it are rotated by the rotation of the minute disk 4 due to the meshing between the ratchet 31 and the intermediate wheel 33, which protects the ratchet 31 and its pawl 32 against the risks of broken.

Le disque 7 (cf. figures 3 et 5), dit « disque des heures », est monté autour d'un tube de guidage 36 qui est fixé au pont de rouage et de barillet 23 et qui entoure lui-même le canon 34 de la roue intermédiaire 33. En fonctionnement normal du mouvement, le disque des heures 7 est entraîné à raison d'un tour par 12 heures. Une aiguille indicatrice des heures 37 est solidaire de ce disque des heures 7. Ce dernier est relié au disque des minutes 4 par un rouage de minuterie 38 situé dans le bâti 1, hors de l'ouverture traversante 8. Dans l'exemple représenté, le rouage de minuterie 38 comprend trois mobiles, le premier mobile 39 étant en prise avec la denture 7a portée par le disque des heures 7, le troisième mobile 41 étant en prise avec la denture 4a portée par le disque des minutes 4 et le deuxième mobile 40 reliant les mobiles 39, 41 l'un à l'autre. Le disque des heures 7 est aussi relié au mécanisme de mise à l'heure qui sera décrit plus loin.The disc 7 (cf. figures 3 and 5 ), said "hours disk", is mounted around a guide tube 36 which is fixed to the gear wheel and barrel 23 and which itself surrounds the barrel 34 of the intermediate wheel 33. In normal operation of the movement the hours disk 7 is driven one turn per 12 hours. An indicator hour hand 37 is integral with this hour 7 disc. The latter is connected to the minute disc 4 by a timer wheel 38 located in the frame 1, out of the through opening 8. In the example shown, the timer wheel 38 comprises three mobiles, the first mobile 39 being engaged with the toothing 7a carried by the hours disk 7, the third mobile 41 being in engagement with the toothing 4a carried by the minute disc 4 and the second mobile 40 connecting the mobiles 39, 41 to one another. The hours disk 7 is also connected to the time setting mechanism which will be described later.

Les dentures du pignon de centre 28a et du barillet 11 sont choisies pour que le désarmage du barillet 11, plus exactement de son ressort moteur, entraîne le disque des minutes 4 en rotation autour de l'axe A à la vitesse précitée d'un tour par heure de manière à indiquer les minutes par l'aiguille des minutes 26 solidaire du disque des minutes 4. Les dentures des mobiles 39, 40, 41 du rouage de minuterie 38 sont choisies pour que la rotation du disque des minutes 4 fasse tourner le disque des heures 7 à la vitesse précitée d'un tour par 12 heures, de manière à indiquer les heures par l'aiguille des heures 37 solidaire du disque des heures 7. Par l'engrènement entre la roue de centre 28b et le mobile de moyenne 15, la rotation du disque des minutes 4 fait aussi tourner le rouage de finissage 28, 15, 16 par rapport audit disque 4, permettant au rouage de finissage d'entraîner l'organe réglant 17, 18, 19.The toothings of the center pinion 28a and the barrel 11 are chosen so that the disarming of the barrel 11, more precisely of its mainspring, causes the minute disc 4 to rotate about the axis A at the aforementioned speed of a lathe hour to indicate the minutes by the minute hand 26 secured to the minute disc 4. The teeth of the mobiles 39, 40, 41 of the timer train 38 are chosen so that the rotation of the minute disc 4 rotates the 7 hour disc at the aforementioned speed of one turn per 12 hours, so as to indicate the hours by the hours hand 37 integral with the hour disc 7. By the meshing between the center wheel 28b and the mobile of mean 15, the rotation of the minute disc 4 also rotates the finishing gear 28, 15, 16 relative to said disc 4, allowing the finishing train to drive the regulating member 17, 18, 19.

Comme montré aux figures 1 et 3, le diamètre (i.e. diamètre de tête et diamètre de pied) de chacune des dentures périphériques 4a, 5a, 6a, 7a que portent les disques transparents 4, 5, 6, 7 est de préférence supérieur au diamètre (i.e. diamètre le plus petit) de l'ouverture traversante 8. Ainsi, ces dentures 4a, 5a, 6a, 7a peuvent être facilement cachées par des éléments du bâti 1 ou par des éléments (lunette, etc.) de la boîte de montre dans laquelle le mouvement est destiné à être monté, pour conférer au mouvement ou à la montre un aspect mystérieux, c'est-à-dire pour faire en sorte qu'aucune liaison visible n'apparaisse entre le bâti 1 ou la boîte de montre et les organes montés sur le disque des minutes 4 qui eux sont visibles à travers la glace et le fond de la boîte de montre. En particulier, ni le mécanisme de mise à l'heure ni le mécanisme de remontage n'affectent ce caractère mystérieux.As shown in figures 1 and 3 the diameter (ie head diameter and root diameter) of each of the peripheral teeth 4a, 5a, 6a, 7a carried by the transparent discs 4, 5, 6, 7 is preferably greater than the diameter (ie the smallest diameter) 8. Thus, these teeth 4a, 5a, 6a, 7a can be easily hidden by elements of the frame 1 or by elements (bezel, etc.) of the watch case in which the movement is intended to be mounted, to give the movement or the watch a mysterious appearance, that is to say, to ensure that no visible connection appears between the frame 1 or the watch case and the organs mounted on the disk minutes 4 which are visible through the ice and the bottom of the watch case. In particular, neither the mechanism of time setting nor the winding mechanism affect this mysterious character.

Outre le rochet 31, la roue intermédiaire 33 et le disque de remontage 6, le mécanisme de remontage comprend (cf. figures 3, 4, 6 et 7) une tige de remontoir 42 actionnable par l'utilisateur et s'étendant radialement. Sur la partie de la tige de remontoir 42 située à l'intérieur du bâti 1 sont montés de manière classique un pignon de remontoir 43 libre en rotation par rapport à la tige de remontoir 42 et un pignon coulant 44 solidaire en rotation mais libre en translation entre le pignon de remontoir 43 et un pignon de mise à l'heure 45 par rapport à la tige de remontoir 42. La translation du pignon coulant 44 est commandée par une bascule 46 soumise à l'action d'un ressort de rappel 47. La bascule 46 est commandée par un doigt 48 d'une tirette 49 elle-même commandée par la tige de remontoir 42 de manière classique. La surface de la bascule 46 avec laquelle coopère le doigt 48 comprend une bosse 50 et deux creux 51, 52 pour définir trois positions différentes de la bascule 46 correspondant à trois positions axiales de la tige de remontoir 42. Dans une première position axiale P1, ou position poussée, de la tige de remontoir 42 (cf. figure 7) le doigt 48 est dans le creux 51 ce qui maintient le pignon coulant 44 dans une position où il n'engrène ni avec le pignon de remontoir 43 ni avec le pignon de mise à l'heure 45. Dans cette position P1, une rotation de la tige de remontoir 42 n'a aucun effet sur le mouvement et la rotation du disque de remontage 6 causée par la rotation du disque des minutes 4 n'est pas communiquée à la tige de remontoir 42. La position P1 est la position de fonctionnement normal du mouvement. Dans une deuxième position axiale P2, ou première position tirée, de la tige de remontoir 42 (cf. figure 8) le doigt 48 est sur la bosse 50 ce qui maintient le pignon coulant 44 dans une position où il engrène avec le pignon de mise à l'heure 45. Dans cette position P2 le mouvement peut être mis à l'heure par une rotation de la tige de remontoir 42 dans un sens ou dans l'autre. Dans une troisième position axiale P3, ou seconde position tirée, de la tige de remontoir 42 (cf. figure 9) le doigt 48 est dans le creux 52 ce qui plaque une denture Breguet du pignon coulant 44 contre une denture Breguet du pignon de remontoir 43. Dans cette position P3 une rotation de la tige de remontoir 42 dans un sens prédéterminé remonte le barillet 11.In addition to the ratchet 31, the intermediate wheel 33 and the winding disc 6, the winding mechanism comprises (cf. figures 3 , 4 , 6 and 7 ) a winding stem 42 actuated by the user and extending radially. On the part of the winding stem 42 located inside the frame 1 are mounted in a conventional manner a winding pinion 43 free to rotate relative to the winding stem 42 and a sliding pinion 44 integral in rotation but free in translation between the winding pinion 43 and a setting pinion 45 relative to the winding stem 42. The translation of the sliding pinion 44 is controlled by a rocker 46 subjected to the action of a return spring 47. The latch 46 is controlled by a finger 48 of a pull tab 49 itself controlled by the winding rod 42 in a conventional manner. The surface of the rocker 46 with which the finger 48 engages comprises a hump 50 and two recesses 51, 52 to define three different positions of the rocker 46 corresponding to three axial positions of the winding stem 42. In a first axial position P1, or pushed position, of the winding stem 42 (cf. figure 7 ) the finger 48 is in the hollow 51 which keeps the sliding pinion 44 in a position where it meshes neither with the winding pinion 43 nor with the setting pinion 45. In this position P1, a rotation of the winding stem 42 has no effect on the movement and the rotation of the winding disc 6 caused by the rotation of the minute disc 4 is not communicated to the winding stem 42. The position P1 is the position normal operation of the movement. In a second axial position P2, or first drawn position, of the winding stem 42 (cf. figure 8 ) the finger 48 is on the hump 50 which keeps the sliding pinion 44 in a position where it meshes with the time setting pinion 45. In this position P2 the movement can be set to the time by a rotation of the winding stem 42 in one direction or the other. In a third axial position P3, or second drawn position, of the winding stem 42 (cf. figure 9 ) the finger 48 is in the recess 52 which plates a Breguet toothing of the sliding pinion 44 against a Breguet toothing of the winding pinion 43. In this position P3 a rotation of the winding stem 42 in a predetermined direction back the barrel 11.

Plus précisément, dans la position P3 une rotation de la tige de remontoir 42 dans ledit sens prédéterminé fait tourner le pignon de remontoir 43 qui, par l'intermédiaire de renvois 53 (cf. figure 4), fait tourner un mobile 54 qui engrène avec la denture 6a portée par le disque de remontage 6. Le disque de remontage 6 fait tourner le rochet 31 via la roue intermédiaire 33 ce qui remonte le barillet 11.More precisely, in the position P3, a rotation of the winding stem 42 in said predetermined direction causes the winding pinion 43 to turn, which, by means of references 53 (cf. figure 4 ), rotates a mobile 54 which meshes with the toothing 6a carried by the winding disc 6. The winding disc 6 rotates the ratchet 31 via the intermediate wheel 33 which raises the barrel 11.

Le mécanisme de mise à l'heure comprend la tige de remontoir 42, avec ses éléments 44, 46, 49 associés, et le pignon de mise à l'heure 45. Ce dernier engrène avec la denture 7a portée par le disque des heures 7 (cf. figure 5). Une rotation de la tige de remontoir 42 lorsque celle-ci est dans la position axiale P2 fait tourner le pignon de mise à l'heure 45, lequel fait tourner le disque des heures 7 (et avec lui l'aiguille des heures 37), le rouage de minuterie 38 et le disque des minutes 4 (et avec lui l'aiguille des minutes 26). Afin d'éviter que de la casse se produise dans le mouvement lors de la mise à l'heure, le mécanisme de mise à l'heure est associé à un dispositif de débrayage qui empêche le mécanisme de mise à l'heure d'exercer un couple sur le rouage 15, 16 et le barillet 11. Les dispositifs de débrayage classiquement associés aux mécanismes de mise à l'heure sont constitués par une simple friction qui est vaincue lors de la mise à l'heure. Dans la présente invention le dispositif de débrayage comprend le disque de débrayage 5 et un dispositif de blocage.The time setting mechanism comprises the winding stem 42, with its elements 44, 46, 49 associated, and the hour setting pinion 45. The latter meshes with the toothing 7a carried by the hour disc 7 (cf. figure 5 ). A rotation of the winding stem 42 when it is in the axial position P2 rotates the setting pinion 45, which rotates the hour disk 7 (and with it the hour hand 37), the minute wheel 38 and the minute disc 4 (and with it the minute hand 26). In order to avoid any breakage in the movement during the time setting, the time setting mechanism is associated with a disengaging device which prevents the time setting mechanism from exercising. a couple on the wheel 15, 16 and the barrel 11. The disengaging devices conventionally associated with the time-setting mechanisms consist of a simple friction which is overcome during the time setting. In the present invention the disengaging device comprises the clutch disc 5 and a locking device.

Le dispositif de blocage est illustré aux figures 6 à 9. Comme les éléments 43-49, il est monté dans le bâti 1, hors de l'ouverture traversante 8, et comprend un levier de commande 55 articulé par l'une de ses extrémités à la tirette 49 et définissant à son autre extrémité une partie cylindrique 56. La partie cylindrique 56 est logée dans un logement 57 en forme de U d'un bloqueur 58. Le bloqueur 58 est une pièce montée pivotante autour d'un axe B parallèle à l'axe A et comprenant deux bras 59 en forme de C dont les surfaces concaves respectives se font face. Chaque bras 59 est joint à une partie rigide 60 du bloqueur 58 au niveau de l'une de ses extrémités. L'autre extrémité de chaque bras 59 est libre. Les extrémités libres respectives des bras 59 laissent un espace vide 61 entre eux. Autour de l'axe B est également montée une étoile 62 qui est libre en rotation par rapport au bloqueur 58. La zone d'appui 63 d'un sautoir 64 est maintenue en contact avec la denture de l'étoile 62 par un ressort de rappel 65. A proximité de sa zone d'appui 63 le sautoir 64 porte une goupille 66 qui s'étend dans une direction parallèle à l'axe B, c'est-à-dire perpendiculaire au plan de pivotement du sautoir 64 et au plan du bâti 1. L'étoile 62 est solidaire en rotation d'un pignon 67 (cf. figure 6) qui engrène avec la denture 5a portée par le disque de débrayage 5.The blocking device is illustrated in Figures 6 to 9 . Like the elements 43-49, it is mounted in the frame 1, out of the through opening 8, and comprises a control lever 55 articulated by one of its ends to the pull tab 49 and defining at its other end a portion The cylindrical portion 56 is housed in a U-shaped housing 57 of a blocker 58. The blocker 58 is a pivotally mounted member about an axis B parallel to the axis A and having two arms 59 in the form of C whose respective concave surfaces face each other. Each arm 59 is joined to a rigid portion 60 of the blocker 58 at one of its ends. The other end of each arm 59 is free. The respective free ends of the arms 59 leave a gap 61 between them. Around the axis B is also mounted a star 62 which is free to rotate relative to the blocker 58. The bearing zone 63 of a jumper 64 is held in contact with the toothing of the star 62 by a spring of 65. Close to its support zone 63 the jumper 64 carries a pin 66 which extends in a direction parallel to the axis B, that is to say perpendicular to the pivot plane of the jumper 64 and the plan of the frame 1. The star 62 is integral in rotation with a pinion 67 (cf. figure 6 ) which meshes with the toothing 5a carried by the clutch disc 5.

La position angulaire du bloqueur 58 est commandée par le levier de commande 55, lui-même commandé par la tirette 49, elle-même commandée par la position axiale de la tige de remontoir 42. Dans les positions P1 et P3 de la tige de remontoir 42 (cf. figures 7 et 9) la goupille 66 du sautoir 64 est retenue par l'un des bras 59, si bien que la zone d'appui 63 du sautoir 64 ne peut pas sortir de la denture de l'étoile 62. Dans ces deux positions P1 et P3, toute rotation de l'étoile 62 et donc du disque de débrayage 5 est bloquée. Dans la position P2 (cf. figure 8) la goupille 66 est en regard de l'espace vide 61 et n'est donc retenue par aucun des bras 59, si bien que l'étoile 62 peut tourner en faisant sauter le sautoir 64, permettant ainsi au disque de débrayage 5 de tourner lui aussi. Comme expliqué précédemment, une rotation de la tige de remontoir 42 pour mettre à l'heure le mouvement fait tourner le disque des minutes 4 par l'intermédiaire du pignon de mise à l'heure 45, du disque des heures 7 et du rouage de minuterie 38. Le disque de débrayage 5 étant libre, il tourne en raison de l'engrènement entre le barillet 11 et le mobile de centre 28 de sorte que le mécanisme de mise à l'heure n'entraîne ni le barillet 11 ni le rouage 15, 16 en rotation par rapport au disque des minutes 4. Un tel débrayage est fiable et robuste, et ne nécessite pas de régler une friction lors de l'assemblage du mouvement.The angular position of the blocker 58 is controlled by the control lever 55, itself controlled by the pull tab 49, itself controlled by the axial position of the winding stem 42. In the positions P1 and P3 of the winding stem 42 (cf. figures 7 and 9 ) the pin 66 of the jumper 64 is retained by one of the arms 59, so that the bearing zone 63 of the jumper 64 can not leave the toothing of the star 62. In these two positions P1 and P3, any rotation of the star 62 and thus of the clutch disc 5 is blocked. In the P2 position (cf. figure 8 ) the pin 66 is opposite the empty space 61 and is therefore not retained by none of the arms 59, so that the star 62 can rotate by jumping the jumper 64, thus allowing the release disc 5 to turn too. As explained above, a rotation of the winding stem 42 to set the time of the movement rotates the minute disk 4 through the time setting pinion 45, the hours disk 7 and the gear wheel. Timer 38. The clutch disc 5 being free, it rotates due to the meshing between the barrel 11 and the center wheel 28 so that the time setting mechanism does not drive the barrel 11 and the gear 15, 16 in rotation relative to the minutes disc 4. Such a release is reliable and robust, and does not require to adjust a friction during the assembly of the movement.

De préférence, les bras 59 sont élastiques pour, en cas de choc reçu par le mouvement pendant son fonctionnement normal, permettre au sautoir 64 de laisser passer une dent de l'étoile 62 et éviter ainsi de la casse au niveau du barillet 11 et du rouage de finissage 28, 15, 16.Preferably, the arms 59 are elastic so that, in the event of shock received by the movement during its normal operation, the jumper 64 allows a tooth to pass through the star 62 and thus to avoid breakage at the barrel 11 and the work train 28, 15, 16.

A la place du dispositif de blocage 55-67 tel que décrit ci-dessus, on pourrait utiliser un dispositif de blocage connu en soi, tel qu'un dispositif à patins de freinage. Cependant, le dispositif de blocage 55-67 est particulièrement avantageux car, du fait de la démultiplication que produit l'engrenage formé par le pignon 67 et la denture 5a de l'organe rotatif à bloquer (disque de débrayage 5), il permet de bloquer l'organe rotatif de manière efficace et robuste même si celui-ci a une grande inertie. De plus, par ses bras élastiques 59, ce dispositif de blocage assure une protection contre les chocs.Instead of the locking device 55-67 as described above, it would be possible to use a locking device known per se, such as a device with braking shoes. However, the blocking device 55-67 is particularly advantageous because, due to the gear reduction produced by the gear formed by the pinion 67 and the toothing 5a of the rotary member to be blocked (disengaging disc 5), it makes it possible to block the rotating member effectively and robustly even if it has a high inertia. In addition, by its elastic arms 59, this locking device provides protection against shocks.

La présente invention a été décrite ci-dessus à titre d'exemple uniquement. Il va de soi que des modifications pourraient être faites sans sortir du cadre de l'invention revendiquée. Par exemple, au lieu d'être sous la forme d'une bascule sur laquelle agit un ressort de rappel, le sautoir 64 pourrait être un ressort lame comprenant à son extrémité libre la zone d'appui 63 et la goupille 66. Le levier de commande 55 pourrait être supprimé et le bloqueur 58 pourrait être directement en contact avec la tirette 49. Le disque de débrayage 5 pourrait être remplacé par un rouage qui relierait le mobile de centre 28 au pignon 67 solidaire de l'étoile 62. Selon encore une autre modification, les aiguilles indicatrices 26, 37 pourraient être imprimées sur les disques respectifs 4, 7. Encore une autre modification pourrait consister à intervertir les fonctions du disque des minutes 4 et du disque des heures 7, c'est-à-dire à faire en sorte que le disque 4 tourne à raison d'un tour par douze heures pour indiquer les heures et que le disque 7 tourne à raison d'un tour par heure pour indiquer les minutes.The present invention has been described above by way of example only. It goes without saying that modifications could be made without departing from the scope of the claimed invention. For example, instead of being in the form of a rocker on which a return spring acts, the jumper 64 could be a leaf spring comprising at its free end the bearing zone 63 and the pin 66. The lever of control 55 could be removed and the blocker 58 could be directly in contact with the pull tab 49. The release disc 5 could be replaced by a wheel that would connect the center wheel 28 to the pinion 67 integral with the star 62. According to yet another modification, the indicator hands 26, 37 could be printed on the respective disks 4, 7. Another modification could be to invert the functions of the minute disc 4 and the hour disc 7, that is to say to make the disc 4 rotates at a rate of one revolution per twelve hours to indicate the hours and that the disc 7 turns to because of one lap per hour to indicate the minutes.

Claims (14)

  1. Timepiece movement comprising:
    - a frame (1),
    - a first toothing arrangement (28a) and a second toothing arrangement (28b) which are fixed with respect to the frame (1) during normal operation of the timepiece movement,
    - a support (4) mounted to pivot with respect to the frame (1) about an axis (A) perpendicular to the plane of the frame (1), the support (4) bearing a barrel (11), a train (15, 16) and a regulating organ (17, 18, 19), the barrel (11) meshing with the first toothing arrangement (28a) so that the letting down of the barrel (11) drives the support (4) in rotation about said axis (A), the train (15, 16) meshing with the second toothing arrangement (28b) so that the rotation of the support (4) drives the train (15, 16) in rotation with respect to the support (4) in order to drive the regulating organ (17, 18, 19),
    - at least one time display member (26, 37) kinematically connected to the support (4),
    - a mechanism (42, 44, 46, 45, 49) for setting the time of the movement, and
    - a disconnecting device (5, 55-67) enabling the time-setting mechanism (42, 44, 46, 45, 49) to adjust the position of said at least one time display member (26, 37) without driving the train (15, 16) in rotation with respect to the support (4),
    characterised in that the disconnecting device comprises:
    - a rotational member (5) mounted to pivot with respect to the frame (1) about said axis (A) and fixedly attached to the first and second toothing arrangements (28a, 28b), and
    - a blocking device (55-67) for blocking the rotation of the rotational member (5) during normal operation of the movement and for allowing the rotational member (5) to rotate freely during when the time is being set.
  2. Timepiece movement as claimed in claim 1, characterised in that the first and second toothing arrangements (28a, 28b) form part of a centre wheel (28) which is fixed to the central part of the rotational member (5).
  3. Timepiece movement as claimed in claim 1 or 2, characterised in that the train (15, 16) comprises a third wheel (15) meshing with the second toothing arrangement (28b) and a fourth wheel (16) meshing with the third wheel (15) and with an escape wheel (18) of the regulating organ (17-19).
  4. Timepiece movement as claimed in any one of claims 1 to 3, characterised in that said at least one time display member (26, 37) comprises a minute indicating member (26) fixedly attached to the support (4) and an hour indicating member (37) kinematically connected to the support (4).
  5. Timepiece movement as claimed in any one of claims 1 to 4, characterised in that the first and second toothing arrangements are one and the same toothing arrangement.
  6. Timepiece movement as claimed in any one of claims 1 to 5, characterised in that the frame (1) has a through opening (8) along said axis (A), in which opening the support (4) and the rotational member (5) are located, in that the support (4) is transparent, in that the rotational member (5) comprises a transparent disc (5) fixedly attached to the first and second toothing arrangements (28a, 28b) and provided with a peripheral toothing arrangement (5a), and in that the blocking device (55-67) is mounted in the frame (1), outside the through opening (8), and is arranged to cooperate with the peripheral toothing arrangement (5a).
  7. Timepiece movement as claimed in claim 6, characterised in that the diameter of the peripheral toothing arrangement (5a) is greater than the diameter of the through opening (8).
  8. Timepiece movement as claimed in claim 6 or 7, characterised in that the support (4) and the transparent disc (5) are made of sapphire.
  9. Timepiece movement as claimed in any one of claims 1 to 8, characterised in that the blocking device (55-67) is arranged to be controlled by axial displacements of a winding stem (42) of the movement.
  10. Timepiece movement as claimed in claim 9, characterised in that the blocking device (55-67) comprises:
    - a star wheel (62) mounted to pivot about a second axis (B) and kinematically connected to the rotational member (5),
    - a jumper (64) comprising a support zone (63) kept elastically in contact with the toothing arrangement of the star wheel (62),
    - a blocking member (58) mounted to pivot about said second axis (B) freely with respect to the star wheel (62) and the angular position of which is controlled by the axial displacements of the winding stem (42) so that the blocking member (58) holds back the jumper (64) in order to prevent said support zone (63) from exiting the toothing arrangement of the star wheel (62) and thus to prevent the star wheel (62) and thus the rotational member (5) from turning when the winding stem (42) is in another axial position than an axial time setting position, and so that the blocking member (58) does not hold back the jumper (64), allowing the star wheel (62) and thus the rotational member (5) to turn, when the winding stem (42) is in the axial time setting position.
  11. Timepiece movement as claimed in claim 10, characterised in that the blocking member (58) comprises at least one part (59) which can deform elastically in the event of a shock so as to allow the support zone (63) of the jumper (64) to momentarily exit the toothing arrangement of the star wheel (62) when the winding stem (42) is in an axial position other than the axial time setting position.
  12. Timepiece movement as claimed in claim 10, characterised in that the blocking member (58) comprises at least one arm (59) arranged to hold back a protruding element (66) borne by the jumper (64) when the winding stem (42) is in an axial position other than the axial time setting position and to not hold back the protruding element (66) when the winding stem (42) is in the axial time setting position.
  13. Timepiece movement as claimed in claim 12, characterised in that said at least one arm (59) is elastic.
  14. Timepiece movement as claimed in any one of claims 10 to 13, characterised in that the star wheel (62) is fixedly attached to a pinion (67) which meshes with the rotational member (5).
EP14182702.2A 2014-08-28 2014-08-28 Clockwork Active EP2990881B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14182702.2A EP2990881B1 (en) 2014-08-28 2014-08-28 Clockwork

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14182702.2A EP2990881B1 (en) 2014-08-28 2014-08-28 Clockwork

Publications (2)

Publication Number Publication Date
EP2990881A1 EP2990881A1 (en) 2016-03-02
EP2990881B1 true EP2990881B1 (en) 2017-01-04

Family

ID=51421911

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14182702.2A Active EP2990881B1 (en) 2014-08-28 2014-08-28 Clockwork

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Country Link
EP (1) EP2990881B1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2463435A1 (en) * 1979-08-10 1981-02-20 Timex Corp Quick hour setting system for timepiece - has guides connected between portions of epicyclic gear train and setting wheel
FR2784203A1 (en) 1998-10-06 2000-04-07 Christophe Claret Sa Time-piece mechanism includes a tourbillon for compensation of the gravity on the balance wheel oscillation
CH700657B1 (en) * 2009-03-24 2014-10-15 Louis Vuitton Malletier Sa mysterious watch.
CH707326B1 (en) 2012-12-13 2018-06-15 Cartier Int Ag Mobile watchmaker for mysterious watch.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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