EP2990880B1 - Uhrwerk - Google Patents

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Publication number
EP2990880B1
EP2990880B1 EP14182699.0A EP14182699A EP2990880B1 EP 2990880 B1 EP2990880 B1 EP 2990880B1 EP 14182699 A EP14182699 A EP 14182699A EP 2990880 B1 EP2990880 B1 EP 2990880B1
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EP
European Patent Office
Prior art keywords
disc
winding
toothing
transparent
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
EP14182699.0A
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English (en)
French (fr)
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EP2990880A1 (de
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
Application filed by Cartier International AG filed Critical Cartier International AG
Priority to EP14182699.0A priority Critical patent/EP2990880B1/de
Publication of EP2990880A1 publication Critical patent/EP2990880A1/de
Application granted granted Critical
Publication of EP2990880B1 publication Critical patent/EP2990880B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • 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
    • 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

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.
  • the present invention aims to propose a clockwork movement with a rotating support whose winding mechanism is compatible with obtaining a mysterious appearance.
  • the intermediate wheel can mesh directly or indirectly (via one or more references) with the winding ratchet.
  • the drive mechanism of the transparent winding disc comprises a winding stem actuated by a user and extending parallel to the plane of the frame.
  • first and second teeth are located in the central part of the through opening.
  • 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.
  • the at least one time display member may include a minute indicator member integral with the transparent support disk and an hour indicator member kinematically connected to the transparent support disk.
  • the transparent media disk 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 diameter of the peripheral toothing is greater than the diameter of the through opening.
  • the transparent support disk and the transparent winding disk are sapphire.
  • 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)

Claims (8)

  1. Uhrwerk, umfassend:
    - ein Gestell (1),
    - eine erste Verzahnung (28a) und eine zweite Verzahnung (28b), welche beim normalen Betrieb des Uhrwerks in Bezug auf das Gestell (1) feststehend sind,
    - eine transparente Tragscheibe (4), welche in Bezug auf das Gestell (1) um eine zur Ebene des Gestells (1) rechtwinklige Achse (A) drehbar angebracht ist, wobei die transparente Tragscheibe (4) ein Federhaus (11), ein Räderwerk (15, 16) und ein Regelorgan (17, 18, 19) trägt, wobei das Federhaus (11) in die erste Verzahnung (28a) eingreift, so dass das Entspannen des Federhauses (11) die transparente Tragscheibe (4) in Drehung um die genannte Achse (A) versetzt, wobei das Räderwerk (15, 16) in die zweite Verzahnung (28b) eingreift, so dass die Drehung der transparenten Tragscheibe (4) das Räderwerk (15, 16) in Drehung in Bezug auf die transparente Tragscheibe (4) versetzt, um das Regelorgan (17, 18, 19) anzutreiben,
    - mindestens ein Element zur Anzeige der Uhrzeit (26, 37), welches kinematisch mit der transparenten Tragscheibe (4) verbunden ist,
    - ein Klinkenrad (31) zum Aufziehen des Federhauses (11) und
    - einen Antriebsmechanismus (42, 43, 53, 54, 6, 33) für das Aufzieh-Klinkenrad (31),
    dadurch gekennzeichnet, dass das Gestell (1) entlang der genannten Achse (A) eine durchgehende Öffnung (8) aufweist, in welcher sich die transparente Tragscheibe (4) befindet, und dass der Antriebsmechanismus für das Aufzieh-Klinkenrad Folgendes umfasst:
    - eine transparente Aufzieh-Scheibe (6), welche um die genannte Achse (A) drehbar in der durchgehenden Öffnung (8) angebracht ist und mit einer Umfangsverzahnung (6a) versehen ist,
    - einen Antriebsmechanismus (42, 43, 53, 54) für die transparente Aufzieh-Scheibe (6), welcher in dem Gestell (1) außerhalb der durchgehenden Öffnung (8) angebracht ist und mit der Umfangsverzahnung (6a) zusammenwirkt, und
    - ein Zwischenrad (33), welches mit der transparenten Aufzieh-Scheibe (6) fest verbunden ist und in das Aufzieh-Klinkenrad (31) eingreift.
  2. Uhrwerk nach Anspruch 1, dadurch gekennzeichnet, dass der Antriebsmechanismus (42, 43, 53, 54) für die transparente Aufzieh-Scheibe (6) eine Aufzugswelle (42) umfasst, welche durch einen Benutzer betätigbar ist und parallel zur Ebene des Gestells (1) verläuft.
  3. Uhrwerk nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass sich die erste und zweite Verzahnung (28a, 28b) im zentralen Teil der durchgehenden Öffnung (8) befinden.
  4. Uhrwerk nach einem beliebigen der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Räderwerk (15, 16) ein Kleinbodenrad (15) umfasst, welches in die zweite Verzahnung (28b) eingreift, und ein Sekundenrad (16), welches in das Kleinbodenrad (15) und in das Ankerrad (18) des Regelorgans (17-19) eingreift.
  5. Uhrwerk nach einem beliebigen der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das genannte mindestens eine Element zur Anzeige der Uhrzeit (26, 37) ein fest mit der transparenten Tragscheibe (4) verbundenes Element zur Anzeige der Minuten (26) und ein kinematisch mit der transparenten Tragscheibe (4) verbundenes Element zur Anzeige der Stunden (37) umfasst.
  6. Uhrwerk nach einem beliebigen der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die erste und zweite Verzahnung ein und dieselbe Verzahnung sind.
  7. Uhrwerk nach einem beliebigen der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Durchmesser der Umfangsverzahnung (6a) größer als der Durchmesser der durchgehenden Öffnung (8) ist.
  8. Uhrwerk nach einem beliebigen der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die transparente Tragscheibe (4) und die transparente Aufzieh-Scheibe (6) aus Saphir sind.
EP14182699.0A 2014-08-28 2014-08-28 Uhrwerk Active EP2990880B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14182699.0A EP2990880B1 (de) 2014-08-28 2014-08-28 Uhrwerk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14182699.0A EP2990880B1 (de) 2014-08-28 2014-08-28 Uhrwerk

Publications (2)

Publication Number Publication Date
EP2990880A1 EP2990880A1 (de) 2016-03-02
EP2990880B1 true EP2990880B1 (de) 2016-12-21

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020201783A1 (en) 2019-04-02 2020-10-08 Maform Kft. Two-stage speed increaser arrangement, and gear train for a clockwork

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH685224B5 (fr) * 1993-04-19 1995-11-15 Juvenia Montres S A Montre mysterieuse comportant notamment deux dispositifs d'affichage et moyens de commande destines en particulier a atre utilises avec une telle montre.
FR2784203A1 (fr) 1998-10-06 2000-04-07 Christophe Claret Sa Mecanisme d'horlogerie incluant un tourbillon
CH707326B1 (fr) 2012-12-13 2018-06-15 Cartier Int Ag Mobile horloger pour montre mystérieuse.

Non-Patent Citations (1)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020201783A1 (en) 2019-04-02 2020-10-08 Maform Kft. Two-stage speed increaser arrangement, and gear train for a clockwork

Also Published As

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