EP4053641A1 - Natürliche hemmung für uhrwerk und uhrwerk, das eine solche uhrhemmung umfasst - Google Patents

Natürliche hemmung für uhrwerk und uhrwerk, das eine solche uhrhemmung umfasst Download PDF

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Publication number
EP4053641A1
EP4053641A1 EP21171889.5A EP21171889A EP4053641A1 EP 4053641 A1 EP4053641 A1 EP 4053641A1 EP 21171889 A EP21171889 A EP 21171889A EP 4053641 A1 EP4053641 A1 EP 4053641A1
Authority
EP
European Patent Office
Prior art keywords
escapement
wheel
balance
natural
alternation
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.)
Withdrawn
Application number
EP21171889.5A
Other languages
English (en)
French (fr)
Inventor
Alain Zaugg
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 EP21205004.1A priority Critical patent/EP4053644B1/de
Priority to US17/563,557 priority patent/US20220283543A1/en
Priority to JP2022006890A priority patent/JP7313495B2/ja
Priority to CN202210133340.6A priority patent/CN114995084B/zh
Publication of EP4053641A1 publication Critical patent/EP4053641A1/de
Withdrawn legal-status Critical Current

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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
    • G04B15/00—Escapements
    • G04B15/06—Free escapements
    • G04B15/08—Lever escapements
    • 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
    • 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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/04—Oscillators acting by spring tension
    • G04B17/06—Oscillators with hairsprings, e.g. balance
    • G04B17/063—Balance construction

Definitions

  • the present invention relates to a natural escapement for a clock movement also known by its name tangential impulse escapement.
  • the present invention also relates to a timepiece movement comprising such an escapement.
  • Breguet's natural escapement has the particular advantage of being a free escapement insofar as the balance is only disturbed by the operation of the escapement over a small fraction of its oscillation. Breguet's natural escapement also has the advantage of giving each alternation a direct and tangential impulse to the balance wheel. In other words, the energy is transferred directly from the escape wheel to the balance wheel, without passing through an anchor. Furthermore, the transmission of energy takes place only tangentially, so that the friction generated by the operation of this escapement is limited.
  • the balance wheel of a natural escapement does not present any lost shots; it receives a similar impulse at each alternation, in a symmetrical and more uniform way, so that the losses of mechanical energy by lost blow are suppressed. All these qualities thus make the natural exhaust one of the potentially most efficient exhausts.
  • the object of the present invention is to remedy the problems mentioned above as well as still others by providing a natural escapement for a watch movement which is in particular less bulky and whose anchor is more easily accessible for measurement and adjustment.
  • the present invention relates to a natural escapement for a watch movement carrying out a succession of operating cycles each consisting of a first and a second alternation of a balance which comprises a balance wheel on an axis of which a balance plate is adjusted, this natural escapement comprising a first escapement wheel driven by a second wheel set, this first escapement wheel in turn driving a second escapement wheel arranged in the same plane as the first escapement wheel escapement, an anchor capable of pivoting around an anchor rod comprising means for temporarily blocking the first escapement wheel during the first alternation, and means for temporarily blocking the second escapement wheel during the second alternation, the anchor rod being located outside an angle of less than 180° and delimited by two straight lines which pass through the axis of the balance wheel and through a pi axis vote of the first escapement wheel for one, and by the axis of the balance wheel and by a pivot axis of the second escapement wheel for the other.
  • the invention also relates to a timepiece movement comprising a natural escapement of the type described above.
  • the present invention provides a natural escapement in which the anchor which alternately blocks and releases the first escapement wheel and the second escapement wheel has its anchor rod located outside an angle less than 180 ° and delimited by two straight lines which pass through the axis of the balance wheel and through a pivot axis of the first escapement wheel for one, and through the axis of the balance wheel and through an axis of pivoting of the second escape wheel for the other.
  • first and second escape wheels are one-piece and each comprise a single level. In other words, these first and second escape wheels are not active according to two distinct stepped levels. They are therefore less bulky and easier to machine.
  • the necessary indexing of the teeth serving to transmit the driving impulses to the balance plate when two superposed escape wheels are used is avoided.
  • the indexing of the single toothing of the first and second escapement wheels which ensures both the meshing of these two drive wheels with each other and the transmission of the driving impulses to the platter balance stems from the very shape of this toothing.
  • the present invention proceeds from the general inventive idea which consists in arranging the anchor of a natural escapement also known under its name tangential impulse escapement, so that its anchor rod is located outside an angle less than 180 ° and delimited by two straight lines which pass through the axis of the balance wheel and through a pivot axis of the first escapement wheel for one, and through the axis of the balance wheel and through an axis of pivoting of the second escape wheel for the other.
  • Such an arrangement which is much less cumbersome than when the lever of the natural escapement is arranged between the escapement wheels, also offers the watchmaker easier access to the first and second pallets for stopping the lever and therefore greater convenience in measuring and adjusting the depth of penetration of these pallets into the teeth of the first and second escape wheels.
  • first and second escape wheels being active only along a single level, they are thinner and therefore less bulky and easier to machine. Furthermore, the indexing of their impulse teeth stems from the actual shape of their teeth and not from a tedious assembly of two superimposed escape wheels.
  • the natural escapement according to the invention is driven by a second mobile 2 which meshes with a pinion 4 fixedly mounted on an axis 6 of a first escape wheel 8.
  • This first escapement wheel 8 in turn meshes via a toothing 10 with a second escapement wheel 12 which pivots around an axis 14.
  • the natural escapement 1 also comprises a balance wheel 16 which comprises a balance wheel 18 on an axis 20 of which is fitted a balance plate 22.
  • This balance plate 22 carries a balance pin 24 as well as a first and a second impulse pallet 26 and 28 whose respective roles will be described below.
  • the natural escapement 1 finally comprises an anchor 30 pivoted around an anchor rod 32 and which carries a first stop pallet 34 and a second stop pallet 36.
  • These first and second stop pallets stop 34 and 36 can be made in one piece with the anchor 30 or can be attached to this anchor 30 in the form of two separate parts. Thanks to these first and second stop pallets 34 and 36 which penetrate respectively into the toothing 10 of the first escapement wheel 8 and into a toothing 38 of the second escapement wheel 12, the lever 30 is able to alternately locking and releasing these first and second escape wheels 8 and 12.
  • the anchor 30 also comprises a fork 40 formed of a first and a second horn 42a and 42b and which carries a dart 44. This dart 44 cooperates with the balance plate 22 and has the function of preventing accidental movements of the fork 40 outside the periods during which the balance plate 22 is in its rest position.
  • the pivot point of the anchor 30, materialized by the anchor rod 32 is outside the angle ⁇ of less than 180° and delimited by two straight lines which pass through the axis 20 of the balance wheel 18 and by pin 6 of first escapement wheel 8 for one, and by pin 20 of balance wheel 18 and by pin 14 of second escapement wheel 12 for the other.
  • the natural escapement 1 according to the invention is therefore less bulky than the natural escapements of the prior art in which the anchor is usually placed between and above the first and second escapement wheels.
  • the natural escapement 1 according to the invention is therefore simpler to house in the clock movement whose operation it regulates.
  • the arrangement of the anchor 30 outside the angle ⁇ of less than 180° makes the interventions of the watchmaker less difficult, in particular as regards the measurement and adjustment of the depth of penetration of the first and second stop plates 34 and 36 in the toothings 10 and 38 of the first and second escape wheel 8 and 12, and of the measurements and adjustments of the heights of the first and second wheels 8 and 12 with respect to the first and second impulse pallets 26 and 28 of the balance plate 22.
  • the natural escapement 1 is completed by a first and a second stop 46a and 46b which limit the movement of the anchor 30 in pivoting.
  • the second mobile 2 which supplies the natural escapement 1 with the energy necessary for its operation rotates clockwise. 'a watch.
  • the second mobile 2 therefore tends to rotate the pinion 4 and the first escapement wheel 8 on the axis 6 of which the pinion 4 is fixed in the counterclockwise direction, and the second escapement wheel 12 in the counterclockwise direction. hourly.
  • An operating cycle of the natural escapement 1 comprises two alternations during which the balance plate 22 goes successively from a first extreme position to a second extreme position passing through a median rest position, then from its second extreme position to its first extreme position by going back a second time through its middle rest position.
  • the first escapement wheel 8 rests on the first stop pallet 34 and the natural escapement 1 is blocked by pressing the lever 30 against the second stop 46b.
  • the pulling angle formed by pressing the tip of the tooth of the first escapement wheel 8 on the first stop plate 34 opposes a resistance to the release of the anchor 30 by tending to cause this anchor to pivot. 30 counterclockwise against the second stop 46b.
  • the second escapement wheel 12 also gives a driving impulse to the balance plate 22 via the one of its teeth 48 called the impulse tooth which drives the second impulse pallet 28 (see Fig. 2C ).
  • This driving impulse is called direct and tangential impulse because it is given directly by the second wheel escapement 12 to the balance plate 22 and that the path of the impulse tooth 48 catches up with that of the second impulse pallet 28 of the balance plate 22 in a tangential manner, which allows an almost point-like contact without friction.
  • the balance plate 22 thus moves to its second extreme position in which it is completely moved away from its rest position, which marks the end of the first alternation of operation of the natural escapement 1 (see figure 2E ).
  • the balance plate 22 returned by the spiral spring of the balance (not visible in the drawing), begins to turn clockwise until it abuts by its balance pin 24 against the second horn 42b of the fork 40 and causes the lever 30 to pivot counterclockwise (see figure 2F ).
  • the anti-clockwise pivoting of the anchor 30 has the effect of releasing the second escape wheel 12 from its grip with the second stop plate 36, which allows the second wheel set 2 to drive, via the first escape wheel 8, the second escape wheel 12 clockwise (see figure 2G ).
  • the first escapement wheel 8 also gives a so-called direct and tangential drive impulse to the balance plate 22 via one of its teeth 50 called the impulse tooth which drives the first impulse pallet 26 (see figure 2G ).
  • the impulse is so named because it is given directly by the first escapement wheel 8 to the balance plate 22 and the path of the impulse tooth 50 catches up with that of the first impulse pallet 26 of the balance plate 22 tangentially, which allows an almost punctual and frictionless contact.
  • the balance plate 22 thus returns to its first extreme position, which marks the end of an operating cycle of the natural escapement 1 (see Figure 2I ).
  • first and second stops 46a and 46b can also be ensured by a specific shape of the first and second stop plates 34 and 36 and of the impulse teeth 48 and 50.
  • the pin balance wheel 24 is located outside an acute angle ⁇ delimited by two straight lines which pass through the axis 20 of the balance wheel 18 and through the first impulse pallet 26, respectively through the second impulse pallet 28.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission Devices (AREA)
  • Micromachines (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Metallurgy (AREA)
  • Electromechanical Clocks (AREA)
EP21171889.5A 2021-03-02 2021-05-03 Natürliche hemmung für uhrwerk und uhrwerk, das eine solche uhrhemmung umfasst Withdrawn EP4053641A1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP21205004.1A EP4053644B1 (de) 2021-03-02 2021-10-27 Natürliche hemmung für uhrwerk und uhrwerk, das eine solche uhrhemmung umfasst
US17/563,557 US20220283543A1 (en) 2021-03-02 2021-12-28 Natural escapement for a horological movement and horological movement comprising such an escapement
JP2022006890A JP7313495B2 (ja) 2021-03-02 2022-01-20 時計のムーブメントのための自然脱進機と、そのような脱進機を備える時計のムーブメント
CN202210133340.6A CN114995084B (zh) 2021-03-02 2022-02-09 用于钟表机芯的自然式擒纵机构和包括这种擒纵机构的钟表机芯

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21160261 2021-03-02

Publications (1)

Publication Number Publication Date
EP4053641A1 true EP4053641A1 (de) 2022-09-07

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EP21171889.5A Withdrawn EP4053641A1 (de) 2021-03-02 2021-05-03 Natürliche hemmung für uhrwerk und uhrwerk, das eine solche uhrhemmung umfasst
EP21205004.1A Active EP4053644B1 (de) 2021-03-02 2021-10-27 Natürliche hemmung für uhrwerk und uhrwerk, das eine solche uhrhemmung umfasst

Family Applications After (1)

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EP21205004.1A Active EP4053644B1 (de) 2021-03-02 2021-10-27 Natürliche hemmung für uhrwerk und uhrwerk, das eine solche uhrhemmung umfasst

Country Status (4)

Country Link
US (1) US20220283543A1 (de)
EP (2) EP4053641A1 (de)
JP (1) JP7313495B2 (de)
CN (1) CN114995084B (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2458503A1 (de) * 1974-12-11 1976-06-16 Graesslin Feinwerktech Hemmung, insbesondere fuer zeitlaufwerke
EP1221637A1 (de) * 2001-01-09 2002-07-10 Ulysse Nardin S.A. Hemmung für Zeitmesser
CH709328A2 (fr) * 2014-03-06 2015-09-15 Seiko Instr Inc Echappement, mouvement de pièce d'horlogerie et pièce d'horlogerie.
CH712631A1 (fr) * 2016-06-27 2017-12-29 Mft Et Fabrique De Montres Et Chronomètres Ulysse Nardin Le Locle S A Echappement pour mouvement d'horlogerie.
CH714200A1 (fr) * 2017-09-29 2019-03-29 Louis Vuitton Malletier Sa Dispositif d'échappement pour mouvement de montre mécanique comportant un échappement avec deux mobiles d'échappement.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006099882A1 (fr) * 2005-03-23 2006-09-28 Marblia Ltd Mouvement pour piece d’horlogerie
ATE449985T1 (de) * 2007-04-18 2009-12-15 Eta Sa Mft Horlogere Suisse Hemmung, die zwei hemmungsräder umfasst
CH701921B1 (fr) * 2009-10-09 2014-07-31 Télôs Watch SA Echappement à ancre et pièce d'horlogerie comportant un tel échappement.
EP2487546B1 (de) * 2011-02-11 2021-06-30 Montres Journe S.A. Zweiachsige Hochleistungshemmung
JP6618306B2 (ja) * 2015-09-16 2019-12-11 セイコーインスツル株式会社 アンクル、調速脱進機、トゥールビヨン、ムーブメント及び時計
JP6558761B1 (ja) * 2018-06-19 2019-08-14 セイコーインスツル株式会社 脱進機、時計用ムーブメント及び時計

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2458503A1 (de) * 1974-12-11 1976-06-16 Graesslin Feinwerktech Hemmung, insbesondere fuer zeitlaufwerke
EP1221637A1 (de) * 2001-01-09 2002-07-10 Ulysse Nardin S.A. Hemmung für Zeitmesser
CH709328A2 (fr) * 2014-03-06 2015-09-15 Seiko Instr Inc Echappement, mouvement de pièce d'horlogerie et pièce d'horlogerie.
CH712631A1 (fr) * 2016-06-27 2017-12-29 Mft Et Fabrique De Montres Et Chronomètres Ulysse Nardin Le Locle S A Echappement pour mouvement d'horlogerie.
CH714200A1 (fr) * 2017-09-29 2019-03-29 Louis Vuitton Malletier Sa Dispositif d'échappement pour mouvement de montre mécanique comportant un échappement avec deux mobiles d'échappement.

Also Published As

Publication number Publication date
US20220283543A1 (en) 2022-09-08
CN114995084B (zh) 2023-11-17
EP4053644B1 (de) 2023-09-27
JP7313495B2 (ja) 2023-07-24
EP4053644A1 (de) 2022-09-07
JP2022134099A (ja) 2022-09-14
CN114995084A (zh) 2022-09-02

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