EP3769159B1 - Zeitmessendes übertragungssystem - Google Patents

Zeitmessendes übertragungssystem

Info

Publication number
EP3769159B1
EP3769159B1 EP19713739.1A EP19713739A EP3769159B1 EP 3769159 B1 EP3769159 B1 EP 3769159B1 EP 19713739 A EP19713739 A EP 19713739A EP 3769159 B1 EP3769159 B1 EP 3769159B1
Authority
EP
European Patent Office
Prior art keywords
mobile
toothset
timepiece
meshing
frame
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
EP19713739.1A
Other languages
English (en)
French (fr)
Other versions
EP3769159A1 (de
Inventor
Jeanne ROCHAT
Alfredo De Biase
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.)
Bulgari Horlogerie SA
Original Assignee
Bulgari Horlogerie SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bulgari Horlogerie SA filed Critical Bulgari Horlogerie SA
Publication of EP3769159A1 publication Critical patent/EP3769159A1/de
Application granted granted Critical
Publication of EP3769159B1 publication Critical patent/EP3769159B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/02—Back-gearing arrangements between gear train and hands
    • 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
    • G04B13/00—Gearwork
    • 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
    • G04B13/00—Gearwork
    • G04B13/001—Gearwork with the choice of adjustable or varying transmission ratio

Definitions

  • the invention relates to a mechanical transmission clockwork system.
  • the invention also relates to a clockwork mechanism comprising such a system.
  • the invention also relates to a timepiece comprising such a system or clockwork mechanism.
  • timepieces it is important that the elements indicating time or time-derived information are not subject to uncontrolled movements due to movements of the wearer of the timepiece or to shocks suffered by the timepiece or to the orientation of the timepiece. In summary, it is important that the movements of the elements indicating time or time-derived information are not due to accelerations suffered by the timepiece.
  • the document CH712477A2 presents a timepiece equipped with a display member and comprising a winding stem arranged to occupy a position for correcting the indication, a sliding pinion mounted so as to rotate securely on the winding stem, a correcting wheel kinematically connected to the sliding pinion when the stem occupies the correction position, and a lever arranged to pivot from a first position, called the slow correction position, to a second position, called the fast correction position.
  • the aim of the invention is to provide a transmission system making it possible to overcome the drawbacks mentioned above and to improve the systems known from the prior art.
  • the invention proposes a transmission system making it possible to avoid untimely movements of an element indicating time information or information derived from the time, without excessive energy consumption and without harming chronometry.
  • a system according to the invention is defined by claim 8.
  • a mechanism according to the invention is defined by claim 15.
  • a timepiece according to the invention is defined by claim 16.
  • a method according to the invention is defined by claim 1.
  • the timepiece is, for example, a watch, in particular a wristwatch.
  • the timepiece comprises a watch mechanism, in particular a mechanical watch movement 100.
  • the watch movement is, for example, of the hand-wound type or the self-winding type.
  • the movement comprises, for example, a finishing gear train between a barrel and an oscillator.
  • the gear train comprises, for example, a 12-hour wheel 7, in particular a 12-hour wheel in the center of the movement, on which is fixed an hour display element, such as, for example, an hour display disc 1.
  • This disc comprises, for example, a marker, such as a triangle or an arrow, cooperating with a limb 3, in particular a limb comprising hour markers 31, provided on the movement or on an attached dial. This cooperation allows the hours to be indicated.
  • a cannon pinion 4 part of the finishing gear, makes one revolution in 12 hours.
  • a wheel 5 drives a wheel 6 and the hour wheel is driven onto the cannon pinion.
  • wheel 5 drives a minute display element, such as a minute display disc 2.
  • This disc comprises, for example, a marker, such as a triangle or an arrow, cooperating with a limb, in particular a limb comprising hour markers, provided on the movement or on an attached dial. This cooperation allows the minutes to be indicated. The same limb can be used for the hours and minutes.
  • Disc 2 is, for example, a disc crown.
  • the drive of the disc 2 by the wheel 5 is done via a set of wheels 8, 9, 10, 11 and 12.
  • the wheels 5, 8, 9, 10 and 11 are toothed wheels with external teeth.
  • the wheel 12 is a toothed crown with internal teeth.
  • the disc 2 is mounted or fixed on the toothed crown 12.
  • the toothed crown 12 is for example guided on a frame 50 of the movement using rollers 51, in particular three rollers 51 mounted on the frame.
  • the drive of disc 2 by wheel 5 is therefore done via a transmission system 90 downstream of wheels 5, 8 and 9.
  • the meshing of the first tooth with the second tooth is irreversible and the meshing of the third tooth with the second tooth is irreversible.
  • the meshing of the first toothing with the second toothing is irreversible
  • the meshing, in particular the teeth is such that the first mobile can drive the second mobile in both directions and such that the second mobile can only drive the first mobile in one direction.
  • the meshing of the third toothing with the second toothing is irreversible
  • teeth are such that the direction in which the second mobile can drive the first mobile is opposite to the direction in which the second mobile can drive the third mobile.
  • the second mobile is a mobile to which is secured, in particular by gearing, the element indicating time information or information derived from the time, in particular the element indicating the minutes.
  • the first toothing comprises teeth with asymmetrical profiles and/or the third toothing comprises teeth with asymmetrical profiles.
  • asymmetrical profile it is meant that each tooth has a first flank and a second flank, the first and second flanks being non-symmetrical relative to a radius of the first mobile, respectively of the third mobile, passing through the top of the tooth.
  • the second toothing comprises teeth with symmetrical profiles.
  • the second toothing is, for example, a toothing with a standardized profile. This ensures that the first mobile is capable of driving the second mobile in two directions of rotation.
  • the first mobile 10 is pivoted around a first axis 10b on the frame 50.
  • the second mobile 11 is pivoted around a second axis 11b on the frame 50.
  • the third mobile 14 is pivoted about a third axis 14b on a movable element 20 relative to the frame 50.
  • the third mobile is mounted freely. A slight friction resisting the rotation of the third mobile may exist.
  • the movable element is for example a rocker pivoted around a fourth axis 20b on the frame 50.
  • the movable element is advantageously movable between a first position in which the second and third teeth mesh and a second position in which the second and third teeth do not mesh.
  • the first position is preferably defined by a first stop 21 against which the element movable element comes into contact in the first position.
  • the second position is preferably defined by a second stop 22 against which the movable element comes into contact in the second position.
  • the system further comprises a selection element and/or a correction element.
  • the movable element is then preferably arranged so as to be moved depending on the actuation of the selection element and/or the correction element.
  • the movable element is moved to the second position when the element for selecting a time correction is activated or when the time correction element is activated.
  • the movable element can be moved to the first position when the element for selecting a time correction is no longer activated or when the time correction element is no longer activated.
  • the selection element and/or the correction element may comprise a rod 99.
  • the movement of the movable element 20 can be controlled via a pull mechanism 98 controlled by a rod 99 (shown schematically in the figure 8 ).
  • a mode of execution of a method of operating the timepiece 200 or the movement 100 or the transmission system is described below.
  • the transmission system is assumed initially in the configuration shown in the figure 8 .
  • the first mobile 10 rotates counterclockwise and drives the second mobile clockwise.
  • the second mobile drives the third mobile counterclockwise.
  • opposite sides of the second teeth are in contact on the one hand with the first mobile and on the other hand with the third mobile.
  • the teeth of the first and third toothings are arranged and/or dimensioned so that at least one tooth of the first toothing is positioned with less clearance between two consecutive or neighboring teeth of the second toothing and so that at least one tooth of the third toothing is positioned with less clearance between two other consecutive or neighboring teeth of the second toothing.
  • the clearance is such that the angular clearance of the second mobile around the second axis 11b between two blockings in opposite directions is less than or equal to 10°, or even less than or equal to 6°, or even less than or equal to 4°.
  • the angular clearance of the toothed crown 12, and therefore the clearance of the element 2 indicating time information or information derived from the time, around its axis of rotation between two blockings in opposite directions is less than or equal to 3°, or even less than or equal to 1.8°, or even less than or equal to 1.2°. Due to this arrangement of the teeth, when the second mobile is stressed due to acceleration, there is an arcuating at the contact with the first mobile or with the third mobile which immobilizes the second mobile. This arcuating follows a take-up of the play mentioned above. Given the value of the clearance, the movement is imperceptible to the user. In addition, this bracing immobilizes the second mobile and prevents movements which could otherwise be transmitted by wheels 5, 8, 9 and 10 and which could overcome the friction torque at the level of the road.
  • the movable element is moved from the first position in which the second and third teeth mesh to the second position in which the second and third teeth do not mesh. This movement is achieved by the action of a selection element or a correction element.
  • the transmission system is then in the configuration shown in the figure 9 .
  • the first mobile 10 is turned clockwise and counterclockwise to correct the time indication.
  • the movable element is then moved from the second position to the first position. This movement is achieved by the action of a selection element or a correction element.
  • the transmission system is then in the configuration shown in figure 8 .
  • the element for indicating time or time-derived information is a minutes indication wheel.
  • the element for indicating time or time-derived information may in particular be a seconds indication element.
  • the element for indicating time or time-derived information is a disc.
  • the element for indicating time or time-derived information may in particular be a hand.
  • the third wheel is pivoted on the movable element.
  • the third wheel can be pivoted directly on the frame.
  • the second and third wheel remain permanently meshed and the correction of the time indication can only be carried out in the clockwise direction.
  • any other type of teeth than those described can be used to produce the first, second and third teeth provided that they allow the irreversibilities described above to be achieved.
  • the transmission system has been described in an application for displaying watch information. It can nevertheless be used for any application where it is necessary to ensure irreversibility of the drive provided by the transmission system.

Landscapes

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

Claims (16)

  1. Verfahren zum Betreiben eines zeitmessenden Übertragungssystems (90), umfassend:
    - eine Einfassung (50),
    - einen ersten Trieb (10), umfassend eine erste Verzahnung (10a),
    - einen zweiten Trieb (11), umfassend eine zweite Verzahnung (11a), der mit dem ersten Trieb in Eingriff steht und dazu bestimmt ist, von dem ersten Trieb angetrieben zu werden, und
    - einen dritten Trieb (14), umfassend eine dritte Verzahnung (14a), der dazu bestimmt ist, mit dem zweiten Trieb in Eingriff zu stehen und dazu bestimmt ist, von dem zweiten Trieb angetrieben zu werden,
    - wobei der Eingriff der ersten Verzahnung mit der zweiten Verzahnung nicht umkehrbar ist, wobei der erste Trieb den zweiten Trieb in beide Richtungen antreiben kann und der zweite Trieb den ersten Trieb nur in eine Richtung antreiben kann, und
    - wobei der Eingriff der dritten Verzahnung mit der zweiten Verzahnung nicht umkehrbar ist, wobei der dritte Trieb den zweiten Trieb in beide Richtungen antreiben kann und der zweite Trieb den dritten Trieb nur in eine Richtung antreiben kann,
    wobei der erste Trieb um eine erste Achse (10b) auf der Einfassung schwenkbar ist, der zweite Trieb um eine zweite Achse (11b) auf der Einfassung schwenkbar ist und der dritte Trieb um eine dritte Achse (14b) auf einem relativ zu der Einfassung beweglichen Element (20) schwenkbar ist,
    oder Verfahren zum Betreiben eines zeitmessenden Mechanismus, umfassend ein solches zeitmessendes System oder Verfahren zum Betreiben eines zeitmessenden Teils, umfassend ein solches zeitmessendes System, das Verfahren umfassend die folgenden Schritte:
    - Bewegen des beweglichen Elements aus einer ersten Position, in der die zweite und die dritte Verzahnung in Eingriff stehen, in eine zweite Position, in der die zweite und die dritte Verzahnung nicht in Eingriff stehen;
    - Korrigieren einer zeitmessenden Anzeige durch Drehen des zweiten Triebs in eine erste Richtung und in eine zweite Richtung;
    - Bewegen des beweglichen Elements aus der zweiten Position in die erste Position.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die erste Verzahnung Zähne mit asymmetrischen Profilen umfasst und/oder die dritte Verzahnung Zähne mit asymmetrischen Profilen umfasst.
  3. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die zweite Verzahnung Zähne mit symmetrischen Profilen umfasst.
  4. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der zweite Trieb ein Trieb ist, mit dem, insbesondere durch Eingriff fest verbunden, ein Element (2) zur Anzeige einer Zeitinformation oder einer von der Zeit abgeleiteten Information fest verbunden ist, insbesondere ein Minutentrieb, mit dem ein Element zur Anzeige der Minuten fest verbunden ist, oder ein Sekundentrieb, mit dem ein Element zur Anzeige der Sekunden fest verbunden ist.
  5. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das bewegliche Element eine Wippe ist, die um eine vierte Achse (20b) auf der Einfassung geschwenkt wird.
  6. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das bewegliche Element zwischen einer ersten Position, in der die zweite und die dritte Verzahnung in Eingriff stehen, und einer zweiten Position, in der die zweite und die dritte Verzahnung nicht in Eingriff stehen, beweglich ist.
  7. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das System ein Auswahlelement und/oder ein Korrekturelement umfasst, wobei das bewegliche Element so angeordnet ist, dass es in Abhängigkeit von der Betätigung des Auswahlelements und/oder des Korrekturelements bewegt wird.
  8. Zeitmessendes Übertragungssystem (90), umfassend:
    - einen ersten Trieb (10), umfassend eine erste Verzahnung (10a);
    - einen zweiten Trieb (11), umfassend eine zweite Verzahnung (11a), der mit dem ersten Trieb in Eingriff steht und dazu bestimmt ist, von dem ersten Trieb angetrieben zu werden, und
    - einen dritten Trieb (14), umfassend eine dritte Verzahnung (14a), der dazu bestimmt ist, mit dem zweiten Trieb in Eingriff zu stehen und dazu bestimmt ist, von dem zweiten Trieb angetrieben zu werden,
    wobei der Eingriff der ersten Verzahnung mit der zweiten Verzahnung nicht umkehrbar ist, wobei der erste Trieb den zweiten Trieb in beide Richtungen antreiben kann und der zweite Trieb den ersten Trieb nur in eine Richtung antreiben kann, und
    wobei der Eingriff der dritten Verzahnung mit der zweiten Verzahnung nicht umkehrbar ist, wobei der dritte Trieb den zweiten Trieb in beide Richtungen antreiben kann und der zweite Trieb den dritten Trieb nur in eine Richtung antreiben kann,
    das System umfassend eine Einfassung (50), wobei der erste Trieb um eine erste Achse (10b) auf der Einfassung schwenkbar ist, der zweite Trieb um eine zweite Achse (11b) auf der Einfassung schwenkbar ist und der dritte Trieb um eine dritte Achse (14b) auf einem relativ zu der Einfassung beweglichen Element (20) schwenkbar ist.
  9. Übertragungssystem nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die erste Verzahnung Zähne mit asymmetrischen Profilen umfasst und/oder die dritte Verzahnung Zähne mit asymmetrischen Profilen umfasst.
  10. Übertragungssystem nach einem der Ansprüche 8 und 9, dadurch gekennzeichnet, dass die zweite Verzahnung Zähne mit symmetrischen Profilen umfasst.
  11. Übertragungssystem nach einem der Ansprüche 8 bis 10, dadurch gekennzeichnet, dass der zweite Trieb ein Trieb ist, mit dem, insbesondere durch Eingriff fest verbunden, ein Element (2) zur Anzeige einer Zeitinformation oder einer von der Zeit abgeleiteten Information fest verbunden ist, insbesondere ein Minutentrieb, mit dem ein Element zur Anzeige der Minuten fest verbunden ist, oder ein Sekundentrieb, mit dem ein Element zur Anzeige der Sekunden fest verbunden ist.
  12. Übertragungssystem nach einem der Ansprüche 8 bis 11, dadurch gekennzeichnet, dass das bewegliche Element eine Wippe ist, die um eine vierte Achse (20b) auf der Einfassung geschwenkt wird.
  13. Übertragungssystem nach einem der Ansprüche 8 bis 12, dadurch gekennzeichnet, dass das bewegliche Element zwischen einer ersten Position, in der die zweite und die dritte Verzahnung in Eingriff stehen, und einer zweiten Position, in der die zweite und die dritte Verzahnung nicht in Eingriff stehen, beweglich ist.
  14. Übertragungssystem nach einem der Ansprüche 8 bis 13, dadurch gekennzeichnet, dass das System ein Auswahlelement und/oder ein Korrekturelement umfasst, wobei das bewegliche Element so angeordnet ist, dass es in Abhängigkeit von der Betätigung des Auswahlelements und/oder des Korrekturelements bewegt wird.
  15. Zeitmessender Mechanismus (100), insbesondere zeitmessendes Uhrwerk, insbesondere zeitmessendes mechanisches Uhrwerk, umfassend ein System (90) nach einem der Ansprüche 8 bis 14.
  16. Zeitmessendes Teil (200), insbesondere Armbanduhr, umfassend einen Mechanismus nach dem vorhergehenden Anspruch und/oder ein System nach einem der Ansprüche 8 bis 14.
EP19713739.1A 2018-03-21 2019-03-21 Zeitmessendes übertragungssystem Active EP3769159B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00383/18A CH714826B1 (fr) 2018-03-21 2018-03-21 Système horloger de transmission.
PCT/EP2019/057049 WO2019180119A1 (fr) 2018-03-21 2019-03-21 Système horloger de transmission

Publications (2)

Publication Number Publication Date
EP3769159A1 EP3769159A1 (de) 2021-01-27
EP3769159B1 true EP3769159B1 (de) 2025-07-30

Family

ID=61971876

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19713739.1A Active EP3769159B1 (de) 2018-03-21 2019-03-21 Zeitmessendes übertragungssystem

Country Status (5)

Country Link
EP (1) EP3769159B1 (de)
JP (1) JP7333333B2 (de)
CN (2) CN115685718A (de)
CH (1) CH714826B1 (de)
WO (1) WO2019180119A1 (de)

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CH700806B1 (fr) * 2006-09-06 2010-10-29 Chopard Manufacture Sa Engrenage unidirectionnel, notamment pour l'horlogerie.
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EP2746872B1 (de) * 2012-12-19 2017-03-15 Chopard Technologies SA Uhr mit Weltzeitanzeige
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Also Published As

Publication number Publication date
CH714826A1 (fr) 2019-09-30
CN112166387A (zh) 2021-01-01
WO2019180119A1 (fr) 2019-09-26
JP7333333B2 (ja) 2023-08-24
CH714826B1 (fr) 2022-11-30
CN112166387B (zh) 2022-12-09
CN115685718A (zh) 2023-02-03
EP3769159A1 (de) 2021-01-27
JP2021518554A (ja) 2021-08-02

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