EP4080292A1 - Uhrwerkmechanismus zur anzeige von mindestens einer einzigen zeitanzeige und uhrwerk mit einem solchen mechanismus - Google Patents

Uhrwerkmechanismus zur anzeige von mindestens einer einzigen zeitanzeige und uhrwerk mit einem solchen mechanismus Download PDF

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Publication number
EP4080292A1
EP4080292A1 EP21170065.3A EP21170065A EP4080292A1 EP 4080292 A1 EP4080292 A1 EP 4080292A1 EP 21170065 A EP21170065 A EP 21170065A EP 4080292 A1 EP4080292 A1 EP 4080292A1
Authority
EP
European Patent Office
Prior art keywords
barrel
wheel
arbor
hour
drum
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
EP21170065.3A
Other languages
English (en)
French (fr)
Other versions
EP4080292B1 (de
Inventor
Fabrice Rochat
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 Breguet SA
Original Assignee
Montres Breguet 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 Montres Breguet SA filed Critical Montres Breguet SA
Priority to EP21170065.3A priority Critical patent/EP4080292B1/de
Priority to US17/646,900 priority patent/US20220342369A1/en
Priority to JP2022000848A priority patent/JP7233573B2/ja
Priority to CN202210133537.XA priority patent/CN115327878B/zh
Publication of EP4080292A1 publication Critical patent/EP4080292A1/de
Application granted granted Critical
Publication of EP4080292B1 publication Critical patent/EP4080292B1/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
    • G04B1/16—Barrels; Arbors; Barrel axles
    • 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
    • G04B1/14—Mainsprings; Bridles therefor
    • 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
    • G04B15/00—Escapements
    • G04B15/14—Component parts or constructional details, e.g. construction of the lever or the escape wheel
    • 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
    • G04B33/00—Calibers
    • G04B33/10—Calibers with seconds hand arranged in the centre of the dial

Definitions

  • the present invention relates to a watch mechanism for displaying at least the single time indication.
  • the invention also relates to a timepiece comprising such a mechanism.
  • the gear train is the set of wheels and pinions which, from the barrel, transmit the driving force to the escapement, the purpose of which is to maintain the oscillations of a regulating organ, typically a balance wheel, which , through its oscillations, regulates the rate of the clockwork movement.
  • a regulating organ typically a balance wheel, which , through its oscillations, regulates the rate of the clockwork movement.
  • time display accuracy problems are particularly troublesome in the case where it is desired to provide an indication of the time by means of a single hour hand. Indeed, in such a case, the slightest inaccuracy in driving this hour hand results in a single time display error that can last up to several minutes.
  • the object of the present invention is to remedy the problems mentioned above as well as still others by proposing a timepiece mechanism making it possible to provide at least the indication of the single time with increased precision.
  • the present invention relates to a timepiece mechanism comprising a barrel drum mounted free to pivot around a barrel arbor, a barrel spring being housed inside the barrel drum, this barrel spring comprising a first turn on the outside by which it is fixed to the barrel drum, and a last turn on the inside by which the mainspring is fixed to the barrel arbor, the winding of the mainspring being done by a rod of winding mechanism which meshes with the barrel drum via a winding gear train, a barrel ratchet being fixedly mounted on the barrel arbor, the timepiece mechanism also comprising a finishing gear train which comprises a first finishing wheel with which the barrel ratchet meshes and which, from the barrel drum, transmits a driving force to an escapement mobile whose purpose is to maintain the oscillations of a regulating organ which, by its oscillations, regulates the ma rch of the watch movement, the watch mechanism further comprising an hour wheel friction-mounted on the barrel arbor and on which is fixed an hour hand, the entire kinematic chain which extends from
  • the present invention provides a watch mechanism comprising a barrel drum on the barrel arbor of which is mounted an hour wheel.
  • the present invention distinguishes from the usual embodiments in which the roadway is for example fixed on an axle of a center wheel of the going train and is connected to the hour wheel via one or more mobiles.
  • the present invention teaches mounting the hour wheel directly on the barrel arbor, the connection between the hour wheel and the escapement is as direct as possible. This makes it possible to avoid as much as possible the problems of backlash and eccentricity of the toothed mobiles that are usually encountered in the transmission of the movement between the roadway and the hour wheel, and therefore to guarantee an accurate display of the time. .
  • the entire kinematic chain which extends from the barrel ratchet to the escapement is calculated so that the barrel ratchet, and therefore the hour wheel, turn at the rate of a complete revolution in 12 or 24 hours; on the other hand, so that it is possible to mount the hour wheel on the barrel arbor, the winding of the barrel spring is done by a winding stem which meshes not with the barrel ratchet which is mounted fixed on the barrel arbor, but with the barrel drum, and the barrel ratchet meshes with the first wheel of the going train.
  • Another advantage of the invention can be seen in the fact that by doing away with one or more reduction wheels between the roadway and the hour wheel, space is reduced.
  • the barrel drum can be arranged in the center of the movement, so that it can be larger than in the case where it has to be placed next to the switch and that one must therefore be satisfied with a barrel drum of smaller diameter. Consequently, thanks to the invention, a timepiece mechanism is provided with a greater power reserve.
  • a minute wheel is fixed on an axle of a wheel of the going train which is calculated so that this wheel performs a complete revolution in 60 minutes.
  • the invention also relates to a timepiece, in particular a wristwatch, comprising such a timepiece mechanism.
  • the present invention proceeds from the general inventive idea which consists in displaying the single time by means of an hour wheel fixed on a shaft of a barrel drum.
  • the present invention teaches that the winding of the mainspring is done by means of a winding stem engaged, not with the barrel ratchet as is usually the case, but with the barrel drum itself. itself, while the barrel ratchet meshes with the first wheel of the going train.
  • a minute wheel is mounted on an axle of a wheel of the going train arranged so that this wheel rotates at the rate of one complete revolution in 60 minutes.
  • the figure 1 and 2 are respectively top and perspective views of the part of a timepiece movement in which the timepiece mechanism according to the invention is integrated.
  • this timepiece movement comprises at its center a barrel drum 2 mounted free to pivot around a barrel arbor 4.
  • a barrel spring 6, housed inside the barrel drum 2 conventionally comprises a first outer turn 6a by which it is fixed to the barrel drum 2, and a last inner turn 6b by which the barrel spring 6 is fixed to the barrel arbor 4.
  • the winding of the barrel spring 6 is done by a winding gear train 8 which is actuated by a winding stem 9 (see figure 4 ) and which meshes not, as is usually the case, with a barrel ratchet 10 fixedly mounted on the barrel arbor 4, but with the barrel drum 2 itself.
  • the timepiece mechanism also comprises a finishing gear train 12 which comprises a first finishing wheel 14 with which the barrel ratchet 10 meshes.
  • This first finishing wheel 14 meshes with a large average pinion 16 which, with a large average wheel 18, forms a large average wheel set 20.
  • the large average wheel 18 meshes with a medium average pinion 22 which , with an average wheel 24, forms an average mobile 26.
  • the average wheel 24 meshes with a second pinion 28 which, with a second wheel 30, forms a second mobile 32.
  • the second wheel 30 meshes with an escapement pinion 34 which, with an escapement wheel 36, forms an escapement wheel set 38.
  • the escapement wheel set 38 is capable of sustaining the oscillations of a regulating member 40 which, through its oscillations, regulates the operation of the clockwork movement 1.
  • this regulating member 40 consists of an assembly formed by a balance wheel 42 and a spiral spring 44 and cooperates re with the escape wheel 36 via an anchor 46.
  • an hour wheel 48 is elastically coupled with the barrel arbor 4 in a way which will be described in more detail below.
  • the assembly formed by the barrel arbor 4 and the hour wheel 48 is pivoted between a first bridge 50a and a second bridge 50b by means of stones 52a, 52b which act as bearings.
  • the number of teeth and the diameters of the cogs which make up the whole of the kinematic chain which extends from the barrel ratchet 10 to the escapement wheel set 38 are calculated in such a way that the hour wheel 48 on which is fixed an hour hand 54 for displaying the single hour rotates at the rate of a complete revolution in 12 or 24 hours.
  • the watch mechanism according to the invention described above operates as follows.
  • the winding stem 9 is actuated which, as we recall, meshes via a winding gear train 8 with the barrel drum 2.
  • the barrel drum 2 rotates and drives the first outer coil 6a of the mainspring 6 by which the latter is fixed to the barrel drum 2.
  • the last inner coil 6b by which the mainspring barrel 6 is fixed to barrel arbor 4 remains fixed, so that barrel spring 6 is stretched.
  • the mainspring 6 begins to relax.
  • the barrel spring 6 drives the barrel arbor 4, and therefore the barrel ratchet 10, in pivoting by its last turn inside 6b.
  • the driving force produced by the barrel spring 6 which relaxes will thus be communicated via the barrel ratchet 10 and the assembly of the going train 12 to the escapement wheel set 38 whose purpose is to maintain the oscillations of the balance wheel 42 , which, by its oscillations, regulates the operation of the clockwork movement 1. It is recalled that the number of teeth and the diameters of the cogs which make up the whole of the kinematic chain which extends from the barrel ratchet 10 to to the escapement wheel 38 are calculated so that the hour wheel 48 on which is fixed an hour hand 54 for displaying the single hour rotates at the rate of a complete revolution in 12 or 24 hours.
  • the hour wheel 48 is frictionally coupled with the barrel arbor 4, this in order to allow adjustment of the single hour display.
  • the hour wheel 48 is coupled with the barrel arbor 4 by means of a friction wheel 56 arranged between the barrel drum 2 and this hour wheel 48.
  • the friction wheel 56 is provided with two flexible arms 58 which grip the barrel arbor 4, so that this friction wheel 56 is elastically coupled with the barrel arbor 4 and is driven in rotation by the latter.
  • the 48 hour wheel is then placed on the friction wheel 56 so that two lugs 60 which stand on the surface of the friction wheel 56 come to engage in two corresponding openings 62 made in the hour wheel 48, which guarantees the coupling in wheel rotation of 48 hours with friction wheel 56.
  • a minute wheel is fixed on an axle of a wheel of the going train 12 which is calculated so that this wheel performs a complete revolution in 60 minutes.
  • the invention also relates to a timepiece such as a wristwatch comprising such a timepiece mechanism.
  • the watch mechanism according to the invention can advantageously be arranged so that the barrel drum 2 is located in the center of the watch case, so that the hour wheel 48 on which the hour hand 54 is fixed for the he unique time display sits in the center of this watch's dial.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Electromechanical Clocks (AREA)
  • Gears, Cams (AREA)
EP21170065.3A 2021-04-23 2021-04-23 Uhrwerkmechanismus zur anzeige von mindestens einer einzigen zeitanzeige und uhrwerk mit einem solchen mechanismus Active EP4080292B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP21170065.3A EP4080292B1 (de) 2021-04-23 2021-04-23 Uhrwerkmechanismus zur anzeige von mindestens einer einzigen zeitanzeige und uhrwerk mit einem solchen mechanismus
US17/646,900 US20220342369A1 (en) 2021-04-23 2022-01-04 Horological mechanism for displaying at least the single time indication and timepiece comprising such a mechanism
JP2022000848A JP7233573B2 (ja) 2021-04-23 2022-01-06 少なくとも単一の時間表示を表示するための計時器用機構及びこのような機構を備える計時器
CN202210133537.XA CN115327878B (zh) 2021-04-23 2022-02-09 用于至少显示单一时间指示的钟表机构和包括这种机构的钟表

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21170065.3A EP4080292B1 (de) 2021-04-23 2021-04-23 Uhrwerkmechanismus zur anzeige von mindestens einer einzigen zeitanzeige und uhrwerk mit einem solchen mechanismus

Publications (2)

Publication Number Publication Date
EP4080292A1 true EP4080292A1 (de) 2022-10-26
EP4080292B1 EP4080292B1 (de) 2023-11-08

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Family Applications (1)

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EP21170065.3A Active EP4080292B1 (de) 2021-04-23 2021-04-23 Uhrwerkmechanismus zur anzeige von mindestens einer einzigen zeitanzeige und uhrwerk mit einem solchen mechanismus

Country Status (4)

Country Link
US (1) US20220342369A1 (de)
EP (1) EP4080292B1 (de)
JP (1) JP7233573B2 (de)
CN (1) CN115327878B (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH27549A (fr) * 1903-02-17 1904-01-31 Irenee Aubry Montre à longue marche et échappement visible, avec seconde au centre
CH1792770A4 (de) * 1970-12-03 1972-06-30
EP3168693B1 (de) * 2015-11-12 2018-11-07 Cartier International AG Uhrwerk

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH687795C1 (fr) * 1994-05-07 2001-05-15 Omega Sa Piece d'horlogerie mecanique pourvue d'un tourbillon.
ATE516523T1 (de) * 2006-04-12 2011-07-15 Montres Breguet Sa Uhr mit schlagwerk, das ein einziges federhaus umfasst
EP2252918B1 (de) * 2008-03-11 2011-10-05 Parmigiani Fleurier S.A. Koaxiales zeitmessungs-uhrwerk
CN202837825U (zh) * 2012-09-12 2013-03-27 天津海鸥表业集团有限公司 陀飞轮座钟
CH706990B1 (fr) * 2012-09-18 2016-10-14 Breitling Ag Mouvement horloger comprenant des premier et deuxième barillets.
EP2746867B1 (de) * 2012-12-18 2015-12-16 ETA SA Manufacture Horlogère Suisse Federgehäuse einer Uhr
EP2871537B1 (de) * 2013-11-06 2017-01-04 ETA SA Manufacture Horlogère Suisse Armbanduhr mit verbesserter Gangreserve
EP2887150A1 (de) * 2013-12-20 2015-06-24 ETA SA Manufacture Horlogère Suisse Optimiertes Federgehäuse einer Uhr
EP2977830B1 (de) * 2014-07-23 2017-08-30 Nivarox-FAR S.A. Uhrhemmungsmechanismus mit konstanter Kraft
CH712101A2 (fr) * 2016-02-08 2017-08-15 Hepta Swiss Sa Mouvement d'horlogerie comprenant un dispositif de régulation disposé entre une source d'énergie et un échappement.
EP3557335A1 (de) * 2018-04-17 2019-10-23 Dominique Renaud SA Direkter freier hemmungsmechanismus für uhr
EP3557334A1 (de) * 2018-04-17 2019-10-23 Dominique Renaud SA Uhrhemmungsmechanismus mit ruheanker, und uhr, die mit einem solchen hemmungsmechanismus ausgestattet ist

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH27549A (fr) * 1903-02-17 1904-01-31 Irenee Aubry Montre à longue marche et échappement visible, avec seconde au centre
CH1792770A4 (de) * 1970-12-03 1972-06-30
EP3168693B1 (de) * 2015-11-12 2018-11-07 Cartier International AG Uhrwerk

Also Published As

Publication number Publication date
US20220342369A1 (en) 2022-10-27
CN115327878B (zh) 2024-05-03
EP4080292B1 (de) 2023-11-08
JP7233573B2 (ja) 2023-03-06
CN115327878A (zh) 2022-11-11
JP2022167770A (ja) 2022-11-04

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