EP2897003A2 - Uhrwerk und mechanische Uhr, die einen Chronografenmechanismus umfasst - Google Patents

Uhrwerk und mechanische Uhr, die einen Chronografenmechanismus umfasst Download PDF

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Publication number
EP2897003A2
EP2897003A2 EP15151310.8A EP15151310A EP2897003A2 EP 2897003 A2 EP2897003 A2 EP 2897003A2 EP 15151310 A EP15151310 A EP 15151310A EP 2897003 A2 EP2897003 A2 EP 2897003A2
Authority
EP
European Patent Office
Prior art keywords
chronograph
friction spring
wheel
movement
movement according
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.)
Granted
Application number
EP15151310.8A
Other languages
English (en)
French (fr)
Other versions
EP2897003A3 (de
EP2897003B1 (de
Inventor
Demetrio Cabiddu
Mathieu Zimmermann
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.)
Montblanc Montre SA
Original Assignee
Richemont International 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 Richemont International SA filed Critical Richemont International SA
Publication of EP2897003A2 publication Critical patent/EP2897003A2/de
Publication of EP2897003A3 publication Critical patent/EP2897003A3/de
Application granted granted Critical
Publication of EP2897003B1 publication Critical patent/EP2897003B1/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
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/22—Compensation of changes in the motive power of the mainspring
    • G04B1/225—Compensation of changes in the motive power of the mainspring with the aid of an interposed power-accumulator (secondary spring) which is always tensioned
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0823—Watches or clocks with stop devices, e.g. chronograph with couplings between the chronograph mechanism and the base movement
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0842—Watches or clocks with stop devices, e.g. chronograph with start-stop control mechanisms
    • G04F7/0857—Watches or clocks with stop devices, e.g. chronograph with start-stop control mechanisms with single push-button or actuation member for start-stop and reset

Definitions

  • the present invention relates to a watch movement and to a timepiece comprising a chronograph mechanism.
  • Movements and mechanical timepieces comprising an existing chronograph mechanism have drawbacks such as variation in the movement of the movement, amplitude variations of the regulating member, between the various operating states, particularly on or off the chronograph.
  • These variations in the course of the movement or the isochronism of the regulating organ come at least partly from the fact that the energy consumed is not the same depending on the function, on or off in particular, engaged.
  • One of the aims of the present invention is to homogenize the energy consumption regardless of the function or the functions engaged and to stabilize the amplitude variations of the regulating member between the different operating states of the movement.
  • the present invention relates to a watch movement comprising a chronograph mechanism obviating the aforementioned drawbacks which is distinguished by the features set forth in claim 1.
  • the invention also relates to a timepiece comprising a movement as enumerated in claim 1.
  • the present invention relates to a watch movement and a mechanical timepiece comprising a chronograph mechanism.
  • the movement comprises a barrel or motor member, a power train connecting the barrel to a driving wheel, called a field wheel 1, pivoted on a fixed part of the movement and a chronograph wheel 2, also pivoted on a fixed part of the movement, the axis 3 is integral with a core 4.
  • This movement further comprises an intermediate rocker or clutch rocker 5 pivoted on a fixed part of the movement in A by a first end and the second end, free, 5.1 cooperates in a conventional manner with a column wheel 6 also rotated on a fixed part of the movement.
  • the intermediate lever 5 carries an intermediate wheel 7 pivoted freely on this intermediate lever and meshes permanently with the field wheel 1.
  • a large rocker 8 subjected to the action of a control pushbutton 9 accessible from outside the timepiece causes, for each pressure on the control pushbutton 9 step by step, the column wheel 6 thanks to its ratchet 8.1.
  • the novelty and originality of the present watchmaking movement lies in the addition of a friction spring 10 fixed on a fixed part of the movement, generally the plate P thereof, passing close to the axis 1.1 of the field wheel 1 and extending beyond this axis until it is superimposed on the intermediate lever 5.
  • this friction spring is free, that is to say it passes next to the axis 1.1. of the field wheel 1 and that its free end is in contact with nothing.
  • this free end of the friction spring is able to come into contact with an adjustable eccentric abutment 11 carried by the intermediate lever 5.
  • the abutment 11 can be fixed on the intermediate lever 5 and formed by a pin or a machining thereof.
  • the principle of the present invention which makes it possible to minimize or even cancel the amplitude variations of a mechanical clockwork movement comprising a chronograph mechanism therefore consists in adding a friction spring to the field wheel which consumes the energy when the chronograph is triggered, when stopped.
  • the friction of the friction spring consumes no energy when the chronograph is running.
  • the intermediate lever or chronograph clutch serves as control of the friction spring and carries an eccentric that allows the adjustment of the spring tension and therefore of the energy consumed by the friction of this spring on the axis of the wheel of field.
  • the tension of the spring is adjusted by means of the eccentric so that the energy consumption of the friction spring, when the chronograph is at a standstill, is equivalent to the energy that the chronograph consumes when he is engaged.
  • the column wheel 6 can be replaced by a cam in a known manner.
  • the column wheel 6 or the cam thus forms a control member of the intermediate lever 5.
  • the free end of the friction spring 10 is located in the path of a stop 11, adjustable or not, and its middle portion is adapted to be applied against the axis 1.1. of the field wheel 1.
  • the stop is carried by the intermediate rocker 5 or, in variants, on another appropriate part of the clutch system of the chronograph mechanism.
  • the friction spring 10 can be mounted on or integrated with the intermediate lever 5.
  • the friction spring 10 is in the rest state in contact against the axis 1.1 of the field wheel 1 and it is the stop 11 carried by the intermediate rocker 5 which displaces the friction spring 10 at the moment of the switching on the chronograph to separate said spring 11 from the axis 1.1 of the field wheel 1.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
EP15151310.8A 2014-01-16 2015-01-15 Uhrwerk und mechanische Uhr, die einen Chronografenmechanismus umfasst Active EP2897003B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH00054/14A CH709154A1 (fr) 2014-01-16 2014-01-16 Mouvement et pièce d'horlogerie mécanique comprenant un mécanisme de chronographe.

Publications (3)

Publication Number Publication Date
EP2897003A2 true EP2897003A2 (de) 2015-07-22
EP2897003A3 EP2897003A3 (de) 2016-04-06
EP2897003B1 EP2897003B1 (de) 2018-11-21

Family

ID=52394915

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15151310.8A Active EP2897003B1 (de) 2014-01-16 2015-01-15 Uhrwerk und mechanische Uhr, die einen Chronografenmechanismus umfasst

Country Status (2)

Country Link
EP (1) EP2897003B1 (de)
CH (1) CH709154A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3327518A1 (de) 2016-11-29 2018-05-30 Montres Breguet S.A. Uhr mit schaltvorrichtung für einen uhrmechanismus
CH715923A1 (fr) * 2019-03-14 2020-09-15 Lvmh Swiss Mft Sa C/O Zenith Succursale De Lvmh Swiss Mft Sa Dispositif d'embrayage latéral pour chronographe à deux renvois et mouvement de montre chronographe comprenant un tel dispositif.
NL2023822B1 (en) * 2019-09-12 2021-05-17 Flexous Mech Ip B V Chronograph watch
NL2023823B1 (en) * 2019-09-12 2021-05-17 Flexous Mech Ip B V Watch
EP4462193A1 (de) * 2023-05-10 2024-11-13 ETA SA Manufacture Horlogère Suisse Mechanisches uhrwerk, das ein bewegliches element umfasst, das ein anzeigeelement mit einer bremsvorrichtung umfasst

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3324249A1 (de) * 2016-11-17 2018-05-23 Nogerah SA Kupplungssystem für chronograph

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB310987A (en) * 1928-01-06 1929-05-06 Charles Vernon Boys Improvements in means for equalizing the drive in clocks and clock-governed mechanism
CH242662A (fr) * 1944-07-18 1946-05-31 Girard Erwin Chronographe.
CH580301B5 (de) * 1973-07-10 1976-09-30 Suisse Horlogerie
EP1498788A1 (de) * 2003-07-14 2005-01-19 Eterna SA Anzeigevorrichtung für Uhren

Non-Patent Citations (1)

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

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3327518A1 (de) 2016-11-29 2018-05-30 Montres Breguet S.A. Uhr mit schaltvorrichtung für einen uhrmechanismus
US10468215B2 (en) 2016-11-29 2019-11-05 Montres Breguet S.A. Timepiece comprising a device for switching a timepiece mechanism
CH715923A1 (fr) * 2019-03-14 2020-09-15 Lvmh Swiss Mft Sa C/O Zenith Succursale De Lvmh Swiss Mft Sa Dispositif d'embrayage latéral pour chronographe à deux renvois et mouvement de montre chronographe comprenant un tel dispositif.
NL2023822B1 (en) * 2019-09-12 2021-05-17 Flexous Mech Ip B V Chronograph watch
NL2023823B1 (en) * 2019-09-12 2021-05-17 Flexous Mech Ip B V Watch
EP4462193A1 (de) * 2023-05-10 2024-11-13 ETA SA Manufacture Horlogère Suisse Mechanisches uhrwerk, das ein bewegliches element umfasst, das ein anzeigeelement mit einer bremsvorrichtung umfasst

Also Published As

Publication number Publication date
EP2897003A3 (de) 2016-04-06
CH709154A1 (fr) 2015-07-31
EP2897003B1 (de) 2018-11-21

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