EP2244138B1 - Vorrichtung zum Aufziehen einer automatischen Armbanduhr, die mit einem Auskupplungssystem versehen ist - Google Patents

Vorrichtung zum Aufziehen einer automatischen Armbanduhr, die mit einem Auskupplungssystem versehen ist Download PDF

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Publication number
EP2244138B1
EP2244138B1 EP10003056A EP10003056A EP2244138B1 EP 2244138 B1 EP2244138 B1 EP 2244138B1 EP 10003056 A EP10003056 A EP 10003056A EP 10003056 A EP10003056 A EP 10003056A EP 2244138 B1 EP2244138 B1 EP 2244138B1
Authority
EP
European Patent Office
Prior art keywords
winding
cam
arm
lever
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.)
Not-in-force
Application number
EP10003056A
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English (en)
French (fr)
Other versions
EP2244138A1 (de
Inventor
Eric Guffond
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.)
Montres Dwitt SA
Montres Dewitt SA
Original Assignee
Montres Dwitt SA
Montres Dewitt SA
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Publication date
Application filed by Montres Dwitt SA, Montres Dewitt SA filed Critical Montres Dwitt SA
Publication of EP2244138A1 publication Critical patent/EP2244138A1/de
Application granted granted Critical
Publication of EP2244138B1 publication Critical patent/EP2244138B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • G04B5/00—Automatic winding up
    • G04B5/24—Protecting means preventing overwinding
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B5/00—Automatic winding up
    • G04B5/02—Automatic winding up by self-winding caused by the movement of the watch
    • G04B5/16—Construction of the weights
    • G04B5/165—Weights consisting of several parts
    • 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
    • G04B9/00—Supervision of the state of winding, e.g. indicating the amount of winding
    • G04B9/02—Devices controlled by such state, e.g. device affording protection means against overwinding

Definitions

  • the present invention relates to the field of watchmaking, more particularly to a device for winding a mainspring of an automatic watch movement comprising a disengaging system.
  • WO2006103560 discloses a mass sector held and guided freely along a circular rail arranged on the periphery of the plate of the movement.
  • the ground sector is secured to an annular cam whose profile is sinusoidal in order to print a rectilinear bidirectional movement to a pawl actuating a winding wheel when the coaxial mass rotates freely on the rail.
  • CH288796 discloses a clock device comprising a member whose position is a function of the degree of winding of the mainspring and which, when said spring is armed, actuates a first cam capable of occupying, under the action of a spring, two positions of 'balanced.
  • the first cam causes in its movement a second cam whose rotation in one direction causes a disengagement between two parts of the winding mechanism, while the rotation of the second cam in the other direction ensures the clutch again as soon as the spring engine was a little disarmed,
  • C487440 relates to a clutch coupling torque limiting device for two coaxial elements, one of the elements of which has, on its facing face facing the other element, a hole in which is housed at least one wire spring engaged by its ends in housings provided for this purpose in the side wall of said core, the cylindrical surface of the second element is located in said core, the spring bearing on it by its central portion.
  • WO2006037367 a timepiece which includes a power reserve indication mechanism having a friction wheel and actuating a timekeeping reliability indicator of the workpiece which indicates the development period of the most popular mainspring spring. precise for the proper functioning of the watch.
  • This device comprises a cam integral and rotating with the friction wheel, the cam being in contact with the probe having an end provided with a toothing driving in rotation a pinion in connection with a return spring fixed to the turntable of the timepiece, the mobile carrying a needle indicating the energy stored in the barrel.
  • the state of the art also uses mechanisms indicating the power reserve including a differential that allows the movement of the two inputs that are walking (rotation of the barrel) and reassembly (rotation of the ratchet) without that they do not interfere with each other. This allows to visualize the reassembly of the movement without acting on the step.
  • the object of the invention is to propose a device for winding an automatic watch comprising a disengaging system which exerts only few constraints on the mechanism and which moreover does not reduce the performance of the barrel.
  • the invention also aims to propose a winding device adapted to be coupled on the one hand to an original automatic mechanism and on the other hand, to a mechanism indicating the power reserve.
  • this object is achieved by means of a device for winding a barrel of an automatic watch movement according to claim 1.
  • This device comprises a winding wheel, a winding system comprising at least one arm armature, arranged to actuate in rotation the winding wheel, and an instantaneous release module capable of disengaging the winding wheel when the mainspring is no longer working in a given voltage range.
  • the disengagement module comprises a part, a return, a cam and a control member said instantaneous control mounted coaxially on an axis, the return being arranged to be rotated about the axis by a gear train meshes with the barrel and with the ratchet of the cylinder, and secondly, a disengaging member collaborating with the cam and capable of disengaging the arming arm of the winding wheel when the control member is rotated to the unison with the cam by the action of a jumper.
  • the winding device comprises, according to the Figure 1 , a winding lever 1 comprising a first and a second spring arm 2, 2 'arranged on either side of a winding wheel 3, which comprises on its circumference a Breguet teeth.
  • the end of the first arm 2 is provided with a spout 4, while the second arm 2 'is provided with a hook 4' so that the spout 4 and the hook 4 'have an opposite action to each other. when reassembling the movement of the watch.
  • the spout 4 thus performs the thrust of the winding wheel 3 while the hook 4 'pulls the wheel 3.
  • the arming lever 1 is mounted on an automatic rocker 5, which is actuated by a mechanism similar to that disclosed in Publication No. WO2006103560 .
  • this mechanism consists of a ground segment 6 held and freely guided along a circular rail (not shown) and an annular cam 7 having an internal profile 8 of sinusoidal shape.
  • a full rotation of the mass sector 6 divides the movements of the flip-flop 5 into ten alternations rising (thrusts) and ten alternations descending (pulls). Each alternation drives the winding wheel 3 one step (a tooth).
  • the rotational movement of the winding wheel 3 is transmitted to ratchet 9 of the barrel 10 by intermediate links (not shown).
  • the clutch module 11 ( Figure 4 ) is on the one hand, by means of references 12 and a differential 13, with the two inputs which are the step (rotation of the barrel 10) and the reassembly (rotation of the ratchet 9) ( Figure 3 ) and on the other hand, it comprises means for disengaging the hook 4 'of the second arm 2' of the arming lever 1.
  • this module 11 ( Figures 4 and 5 ) includes a return 17, a clutch cam 18 and a snapshot control 19.
  • the cam 18 and the control 19 are freely adjusted on a shaft 20 which is driven inside the hub 21 of the reference 17.
  • the module declutching member 11 further comprises a release lever 14 having a first and second arm 15, 15 '.
  • the first arm 15 of the lever 14 comprises at its end a probe 5 "arranged to collaborate, under the action of a leaf spring 16, with a portion of the profile of the cam 18 of the release module 11.
  • the second arm 15 ' the release lever 14 has at its end a pin 24 engageable with a portion 4 "forming an integral part of the second arm 2 'of the arming lever 1.
  • the release lever 14 can thus be actuated in rotation around its pivot axis 14 '( Figure 3 ) so that the second arm 15 'of said lever 14 can disengage the spout 4' of the arming lever 1 of the Breguet toothing of the winding wheel 3.
  • the relationships between the various references illustrated by the Figure 3 are calculated so that the return 17 of the release module 11 rotates 360 ° in a period corresponding to the power reserve of the watch, in this case a complete rotation in approximately 75h.
  • gear ratios can be used so that the clutch module 11 does not perform a complete rotation in the period corresponding to the power reserve of the watch, but runs through an angular sector of an angle during this period.
  • the end of the snapshot control 19 comprises a connecting pin 22, part of which is intended to be arranged in an oblong orifice 23 formed on the return 17 of the release module 11.
  • the lateral edges of this oblong 23 have a semicircular shape whose radius of curvature is slightly greater than that of the cross section of the pin 22.
  • the cam 18 has a cutout 18 'whose width corresponds substantially to the width of the oblong 23 and whose edges side are likely to be in contact with a portion of the circumference of the lower portion of the pin 22.
  • the reference 17 simultaneously drives the instantaneous control 19 and the cam 18 via the pin 22.
  • This module is achieved by means of a snap jumper 25 arranged to collaborate with the end of the snapshot control 19.
  • This end has two flanks 19a, 19b ( Figure 5 ) arranged symmetrically at about 45 ° with respect to the median longitudinal axis of said control 19 to obtain a pointed end.
  • This control 19 is adjusted on the shaft 20 so that it occupies a position in correspondence with the head of the jumper 25 when the mainspring is close to reaching its maximum voltage.
  • this release module 11 In order to better understand the operation of this release module 11, it is represented by the Figures 6 to 10 in the different critical phases of the operation of the watch, namely when the module is in the winding phase, the disengaging phase and the clutch phase.
  • the control 19 is then rotated in unison with the cam 18, by the action of the jumper 25, an angle corresponding to the clearance between the circumference of the pin 22 and one of the lateral edges of the oblong 23.
  • the slope of the cam 18 thus pushes the probe 15 "of the release lever 14 so that it rotates about its axis of rotation 14 'thus pushing the arm 2'" hooker "of the arming lever 1 under the action of the pin 24 of the lever 14 on the portion 4 "of said arm 2 '( Figure 8 ).
  • the arming lever 1 can no longer perform its function of winding the movement because the action of the hook 4 'on the winding wheel 3 is removed. This results in an oscillatory movement of the winding wheel 3 at the same rate as the armature rocker 5.
  • the release lever 14 pivots in the opposite direction about its axis of rotation 14 'under the action of the spring blade 16 and then brings the arm 2'" hook “lever 1 in engagement with the winding wheel 3 ( Figure 10 ).
  • the arming lever 1 again performs its function of winding the movement by the combined action of the spout 4 and the hook 4 'on the winding wheel. In automatic operation, the power reserve at this stage increases again.
  • An indicator mechanism of the power reserve is advantageously coupled to the winding device.
  • the IRM mechanism When reassembling the watch, the barrel still rotating at the same speed, the IRM mechanism must allow to visualize the reassembly of said watch without acting on the step in order to read the indication of the power reserve in real time via a needle, a disk, a window of any other existing means (not shown).
  • a differential 13 (especially Figures 3 and 6 ) is integrated in the winding device.
  • This differential 13 allows the taking of the movement on the two inputs that are walking (rotation of the barrel 10) and reassembly (rotation of the ratchet 9).
  • a pinion 26 ( Figure 5 ) is mounted on the shaft 20 of the clutch module 11 and is engaged with a gear train (not shown) which transmits the movement to the display of the power reserve.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Transmission Devices (AREA)
  • Electromechanical Clocks (AREA)

Claims (9)

  1. Vorrichtung zum Aufziehen eines Federhauses (10) eines automatischen Uhrwerks, wobei die Vorrichtung ein Spannrad (3), ein Spannsystem, das mindestens einen Spannarm (2, 2') enthält, der angeordnet ist, um das Spannrad (3) in Drehung zu betätigen, und ein Modul augenblicklicher Ausrückung (11) enthält, das das Spannrad (3) ausrücken kann, wenn die Zugfeder (10) nicht mehr in einem gegebenen Spannungsbereich arbeitet, dadurch gekennzeichnet, dass das Ausrückmodul (11) einerseits ein Zeigerstellrad (17), eine Nocke (18) und ein Steuerorgan (19), augenblickliche Steuerung genannt, aufweist, die koaxial auf eine Achse (20) montiert sind, wobei das Zeigerstellrad (17) angeordnet ist, um durch einen Satz von Zeigerstellrädern (12) in Eingriff mit dem Federhaus (10) und mit dem Sperrrad (9) des Federhauses (10) um die Achse (20) in Drehung versetzt zu werden, und andererseits ein Ausrückorgan (14) aufweist, das mit der Nocke (18) zusammenwirkt und den Spannarm (2, 2') vom Spannrad (3) ausrücken kann, wenn das Steuerorgan (19) durch die Wirkung einer Raste (25) zusammen mit der Nocke (18) in Drehung versetzt wird.
  2. Aufziehvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Spannsystem auf eine Wippe (5) montiert ist und einen Spannhebel (1) aufweist, der mit einem ersten und einem zweiten Arm (2, 2') versehen ist, die zu beiden Seiten des Spannrads (3) angeordnet sind, das auf seinem Umfang eine Breguet-Zahnung besitzt, wobei der erste und der zweite Arm (2, 2') des Spannhebels (1) eine Spitze (4) bzw. einen Haken (4') aufweisen, damit sie eine einander entgegengesetzte Funktion haben.
  3. Aufziehvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass sie außerdem eine Schwungmasse (6) enthält, die einen Masseabschnitt (6') aufweist, der fest mit einer sinusförmigen Ringnocke (7) verbunden ist, wobei die Nocke (7) angeordnet ist, um vom Masseabschnitt (6') auf dem Umfang des Werks in Drehung versetzt zu werden, wobei die Drehung der Nocke (7) der Wippe (5) eine Schwingbewegung verleiht, damit die Spitze (4) und der Haken (4') des Spannsystems jeweils und abwechselnd einen Schub bzw. einen Zug auf das Spannrad (3) ausüben, um das Aufziehen des Werks zu gewährleisten.
  4. Aufziehvorrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass das Ausrückorgan (14) ein Hebel ist, der einen ersten und einen zweiten Arm (15, 15') aufweist, wobei der erste Arm (15) angeordnet ist, um mit der Nocke (18) des Ausrückmoduls (11) zusammenzuwirken, um unter der Wirkung der Nocke (18) den Einrückhebel (14) um seine Schwenkachse (14') in Drehung zu betätigen, damit der zweite Arm (15') des Hebels (14) den Haken (4') von der Breguet-Zahnung des Spannrads (3) lösen kann.
  5. Aufziehvorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass der zweite Arm (2') des Spannhebels (1), der den Haken (4') aufweist, an seinem Ende einen Teil (4") besitzt, gegen den ein
    fest mit dem zweiten Arm (15') verbundener Stift (24) in Kontakt kommen kann.
  6. Aufziehvorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass sie außerdem ein Differential (13) aufweist, wobei das augenblickliche Ausrückmodul (11) über Zeigerstellräder (12) und das Differential (13) mit den zwei Eingängen Eingriff steht, die der Gang, der der Drehung des Federhauses (10) entspricht, und das Aufziehen sind, das der Drehung des Sperrrads (9) entspricht.
  7. Aufziehvorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass ein Trieb (26) auf die Achse (20) montiert ist, wobei der Trieb (26) mit einem Zeigerstellrad eines Anzeigemechanismus der Gangreserve in Eingriff ist.
  8. Uhrwerk, das die Aufziehvorrichtung nach einem der vorhergehenden Ansprüche aufweist.
  9. Armbanduhr, die die Aufziehvorrichtung nach einem der Ansprüche 1 bis 7 oder das Uhrwerk nach Anspruch 8 aufweist.
EP10003056A 2009-04-22 2010-03-23 Vorrichtung zum Aufziehen einer automatischen Armbanduhr, die mit einem Auskupplungssystem versehen ist Not-in-force EP2244138B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH00678/09A CH700861A2 (fr) 2009-04-22 2009-04-22 Dispositif de remontage d'une montre automatique.

Publications (2)

Publication Number Publication Date
EP2244138A1 EP2244138A1 (de) 2010-10-27
EP2244138B1 true EP2244138B1 (de) 2012-03-07

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EP10003056A Not-in-force EP2244138B1 (de) 2009-04-22 2010-03-23 Vorrichtung zum Aufziehen einer automatischen Armbanduhr, die mit einem Auskupplungssystem versehen ist

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EP (1) EP2244138B1 (de)
AT (1) ATE548681T1 (de)
CH (1) CH700861A2 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH704893A2 (fr) * 2011-05-03 2012-11-15 Patek Philippe Sa Geneve Mécanisme de remontage automatique.
EP2551731A1 (de) * 2011-07-28 2013-01-30 Cartier Création Studio S.A. Schwungmasse, die auf die Außenseite eines Uhrwerks geschwenkt ist, und mit einer solchen Schwungmasse ausgestattetes Uhrwerk
EP2674818B1 (de) * 2012-06-14 2017-08-02 Blancpain SA. Anzeige auf Schwungmasse eines Uhrwerkes mit automatischem Aufzug

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1557447A (en) * 1921-12-22 1925-10-13 Faraggi Ernest Device for the automatic stoppage of spiral springs
CH288796A (fr) * 1950-11-27 1953-02-15 Froidevaux Jean Michel Dispositif pour arrêter le remontage d'une montre quand le ressort moteur est armé.
CH232767A4 (de) * 1967-02-17 1969-11-28
DE602004030724D1 (de) * 2004-10-09 2011-02-03 Bnb Concept Sa Mechanische oder automatische uhr mit einer einrichtung zur anzeige der zeitgenauigkeit der uhr
WO2006103560A2 (fr) 2005-03-30 2006-10-05 Dth Dubois Technique Horlogere Sa Dispositif de remontage automatique

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EP2244138A1 (de) 2010-10-27
CH700861A2 (fr) 2010-10-29
ATE548681T1 (de) 2012-03-15

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