EP2506091B1 - Hemmungsmechanismus, insbesondere für Uhrwerk - Google Patents

Hemmungsmechanismus, insbesondere für Uhrwerk Download PDF

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Publication number
EP2506091B1
EP2506091B1 EP12001977.3A EP12001977A EP2506091B1 EP 2506091 B1 EP2506091 B1 EP 2506091B1 EP 12001977 A EP12001977 A EP 12001977A EP 2506091 B1 EP2506091 B1 EP 2506091B1
Authority
EP
European Patent Office
Prior art keywords
anchor
escapement
movement
locking
pulse
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
EP12001977.3A
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English (en)
French (fr)
Other versions
EP2506091A2 (de
EP2506091A3 (de
Inventor
Kéwin Bas
Cyrille Chatel
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.)
Cartier International AG
Original Assignee
Cartier International AG
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Filing date
Publication date
Application filed by Cartier International AG filed Critical Cartier International AG
Publication of EP2506091A2 publication Critical patent/EP2506091A2/de
Publication of EP2506091A3 publication Critical patent/EP2506091A3/de
Application granted granted Critical
Publication of EP2506091B1 publication Critical patent/EP2506091B1/de
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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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/20—Compensation of mechanisms for stabilising frequency
    • G04B17/26—Compensation of mechanisms for stabilising frequency for the effect of variations of the impulses
    • 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
    • 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
    • G04B15/10—Escapements with constant impulses for the regulating mechanism

Definitions

  • the present invention relates to escape mechanisms for clockwork in particular and more particularly to a constant force escapement mechanism.
  • the purpose of a constant force escapement for a watch movement is to ensure that the oscillation of the sprung balance of the movement is maintained by identical successive pulses, that is to say, delivering to the sprung balance the same amount of energy regardless of the state of winding of the barrel of the watch movement.
  • Such constant force escapement mechanisms comprise an auxiliary spring inserted in the kinematic chain connecting the barrel of the movement to the escapement wheel of this movement.
  • auxiliary spring is reloaded only every five oscillations of the balance so that the torque transmitted to the sprung balance at each pulse is not strictly constant, the auxiliary spring being relaxed between the first and the fifth pulse.
  • Constant force escape mechanisms are still known EP 1528443 , CH 13248 or DE 619433 wherein the auxiliary springs for transmitting a constant torque to the escape wheel are not inserted into the gear train of the movement but fixed on said movement and acting on a mobile. These mechanisms are very cumbersome because they require cogs that can not be integrated into the occupied space usually by the classic exhaust mechanism, anchor - escape wheel.
  • the object of the present invention is to provide a constant force escapement mechanism for a clockwork movement that makes it possible to maintain the sprung balance by successive pulses that are effectively identical and in no way modifies the finishing gear train. movement connecting its barrel to its exhaust wheel which is compact and has only few parts.
  • Another object of the invention is to integrate the auxiliary spring of the escapement mechanism with constant force in the space between the axis of the escape wheel and the axis of the balance-spring to obtain a mechanism of very compact constant force escapement.
  • Yet another object of the present invention is the realization of a constant force escapement mechanism having a better efficiency than existing ones and a reduction in the inertia of the transmission chain, especially during the transmission of torque to the balance spring. .
  • an objective of the present invention is also to improve the chronometry of the watchmaking movement thus equipped.
  • the present invention relates to a constant force escapement mechanism according to claim 1.
  • the invention also relates to a watch movement or a timepiece whose movement is equipped with such a constant force escapement mechanism.
  • the figures illustrate a constant force escapement mechanism according to the invention comprising an auxiliary spring of constant force is intended to equip a watch movement comprising a sprung balance and an escapement mobile connected to a barrel by a gear wheel. finishing.
  • This escapement mechanism with constant force is distinguished in that it comprises a pulse anchor pivoted on a part of the frame of the cooperating movement on the one hand with the escape wheel and secondly with control members secured to the shaft of the sprung balance and in that the auxiliary spring of constant force is fixed by one of its ends to a portion of the frame of the movement and by its other end to the axis of the pulse anchor.
  • the constant force escapement mechanism comprises an escapement wheel 1 comprising, mounted on an axis 1.1, an escape pinion 1.2 kinematically connected by a finishing gear (not shown) to the barrel (not illustrated) of a watch movement.
  • This exhaust mobile 1 further comprises a lower escape wheel 1.3, an intermediate exhaust wheel 1.4 and an upper exhaust wheel 1.5 all three integral with the axis 1.1.
  • This escapement mobile 1 is pivoted on a part of the frame of the watch movement such as the plate, a bridge or a tourbillon cage of this watch movement.
  • This escapement mechanism further comprises control members secured to the axis 2 of the sprung balance (not shown) pivoted on a part of the frame of the watch movement.
  • this axis 2 of the sprung balance comprises a dart plate 3 provided with a notch 3.1; an ankle plate 4 having a dowel 4.1 located under the dart plate 3; an upper control plate 6 having an upper cam 6.1 on its lower face; a lower control plate 7 having a lower cam 7.1 on its upper face facing said upper control plate 6; and a pulse plate 5 having a pulse finger 5.1 and located between the upper control plate 6 and the lower control plate 7.
  • the constant force escapement mechanism further comprises a pulse anchor 8 pivotally mounted and slidable longitudinally on a part of the building of the watch movement.
  • the anchor 8 is secured to a locking pin 9, perpendicular to the plane in which the pulse anchor 8 pivots.
  • This locking pin 9 extends preferably parallel to the axis 2 of the sprung balance and to the axis of rotation 1.1 of the escapement wheel 1.
  • This locking pin 9 is angularly secured to a ferrule 10 itself. even integral with the inner end of an auxiliary spring constant force 11 whose outer end 11.1 is provided to be fixed on a part of the frame of the watch movement.
  • the ferrule 10 is slidably mounted on the locking pin 9 while being angularly secured thereto.
  • the ferrule 10 could be integral with the locking pin 9 or the pulse anchor 8.
  • the pulse anchor 8 has a first end 8.1 in the form of a tooth intended to cooperate with the teeth of a pulse toothing of the lower escape wheel 1.3.
  • This pulse anchor 8 has a second end 8.2, extending between the upper control plate 6 and the lower control plate 7 integral with the axis of the sprung balance, intended to cooperate with the upper cams 6.1 and lower 7.1 .
  • a first pin 12, fixed on a part of the frame of the clockwork movement serves as a stop stop for the pulse anchor 8.
  • the auxiliary spring of constant force 11 tends to move the pulse anchor 8 in the direction of a second pin 13.
  • the locking pin 9 carrying the pulse anchor 8 is capable of being displaced longitudinally between a high position for which its locking end 9.1 cooperates with a first toothing of the upper escape wheel 1.5 and prevents any rotation thereof, and a low position for which the upper escape wheel 1.5 is released from the locking end 9.1 of the locking pin 9.
  • the constant force escapement mechanism further comprises a locking anchor 14 having four arms integral with a locking anchor axis 14.1 pivoted on a part of the frame of the watch movement.
  • This locking anchor 14 has a first arm 14.2 cooperating with a third pin 15 and a fourth pin 16 to limit the angular fretting of the locking anchor 14.
  • the locking anchor further comprises a second arm 14.3 whose end comprises a fork 14.4 and a dart 14.5 intended to cooperate with the dowel 4.1 respectively the dart plate 3 like a conventional Swiss lever escapement for controlling the angular displacements of the locking anchor 14.
  • This locking anchor 14 also comprises a third arm 14.6 whose free end serves as a holding stop for the pulse anchor 8 in the armed position against the first pin 12.
  • this locking anchor 14 includes a fourth arm 14.7 whose end has a hook 14.8 for cooperating with a second toothing of the intermediate escape wheel 1.4.
  • the escapement mobile 1 In the initial position illustrated in figures 2 , 2a , the escapement mobile 1 is blocked by the end 9.1 of the locking pin 9 which is in the high position.
  • the pulse anchor 8 is also in the high position for which its first end 8.1 is located above the plane of the lower escape wheel 1.3 with which it does not cooperate.
  • the pulse anchor 8 is subjected to the action of the torque of the auxiliary spring of constant force 11 which tends to rotate it clockwise (in the figure view).
  • the pulse anchor 8 is blocked by the end of the third arm 14.6 of the locking anchor.
  • the pulse anchor 8 subjected to the action of the auxiliary spring constant force 11 pushes on the end of the third arm 14.6 of the locking anchor 14, which maintains it in support against the third pin 15 by his second arm 14.2.
  • the dart 14.5 and the dart plate 3 avoid any untimely release of the mechanism.
  • the rocker arm rotates counterclockwise, bringing the anchor 4.1 of the anchor plate 4 into the fork 14.4 of the locking anchor 14 causing the locking anchor to move in a clockwise direction until its second arm 14.2 abuts against the fourth pin 16 ( Figures 3 , 4 ).
  • the pulse anchor 8 is released but the escapement wheel 1 is still blocked by the locking pin 9.
  • the released pulse anchor 8 moves clockwise under the effect of the constant force auxiliary spring 11.
  • the second end 8.2 of the pulse anchor at the height of the impulse plate 5 comes into operation. contact with the impulse finger and transmits the energy to the pendulum and this until the arrival of the pulse anchor 8 against the second pin 13.
  • the transmission of energy is until the stop of the pulse anchor 8, there is no lost stroke of the pulse anchor.
  • the ferrule 10 can move with the locking pin 9 because the energy of the spring used during the raising / lowering of this locking pin is not important.
  • the ferrule can remain in the same plane by means of a slide connection with the locking pin 9.
  • the escapement wheel 1 rotates in the counter-clockwise direction, thereby causing the impulse teeth of the lower escape wheel 1.3 to drive the pulse anchor 8 in the direction of the needles.
  • a watch against the action of the auxiliary spring of constant force 11 until the mobile escapement is blocked by the hook 14.8 of the fourth arm 14.7 of the locking anchor located on the path of the second locking toothing of the intermediate escapement wheel 1.4 ( Figure 6 ).
  • the work train and the escapement wheel 1 are then blocked by the locking anchor 14 and the intermediate escapement wheel 1.4.
  • the pulse anchor 8 is also locked in rotation by the lower escape wheel 1.3.
  • the locking anchor 14 is held against the pin 15 by the force of the intermediate escapement wheel 1.4 on the fourth arm 14.7 of the locking anchor 14. (Orientation of the force studied as in an anchor escapement Swiss classic between the anchor and the exhaust).
  • the dart 14.5 and the dart board 3 avoid any untimely release.
  • the pendulum completes its half-race.
  • the peg 4.1 of the peg plate cooperates with the fork of the second arm 14.3 of the locking anchor (as in a conventional Swiss lever escapement) which releases the escape wheel 1, the hook 14.8 of the fourth arm of the anchor locking anchor escapes the teeth of the intermediate escapement wheel 1.4 ( Figure 7 ).
  • the escapement mobile 1 thus released, resumes its rotation in the direction of clockwise, the pulse teeth of the lower escape wheel 1.3 drives the first end 8.1 of the pulse anchor re-cocking the spring constant force aid 11 until the pulse anchor abuts against the first pin 12 ( Figure 8 ).
  • the inclined plane of the lower cam 7.1 of the lower control plate 7 causes the raising of the pulse anchor 8 disengaging the lower escape wheel 1.3.
  • the locking pin 9 is also raised and its locking end 9.1 is housed between two teeth of the locking toothing of the upper escapement wheel 1.5 blocking the escapement wheel 1 and the finishing gear ( Fig. 8 ).
  • the end of the third arm 14.6 of the locking anchor 14 locks the pulse anchor 8 and the mechanism is found in the initial position ( Figure 2 ).
  • This new constant force escapement mechanism is simple, it has few parts, especially less than existing constant force exhausts.
  • the size of the escapement mechanism with constant force is reduced because of the small number of parts thereof and the fact that the auxiliary spring is housed, incorporated, between the axis 2 of the beam and the axis 1.1 of the mobile exhaust.
  • the constant force escapement mechanism has the distinction of having separated the locking function of the escapement wheel 1 which is effected by the locking pin 9 and the fourth arm 14.7 of the impulse function locking anchor which is carried out using the pulse anchor 8 and the auxiliary spring of constant force.
  • This particular embodiment (which is also the subject of another applicant's patent application filed on the same day as this one) has additional advantages since during the impulse phase the mobile escape 1, and therefore all the gear of finishing movement, is blocked so that the inertia of moving parts during the impulse is very low, thus preventing any recoil of the mobile escape 1.
  • the entire race angular of the pulse anchor is effectively active, without dead stroke in this embodiment.
  • the efficiency of the exhaust mechanism is significantly improved as well as the precision of the chronometry of the movement equipped with this exhaust mechanism.
  • the energy transmitted to the balance at each pulse is strictly constant because it depends only on the auxiliary spring which is rearmed between each pulse.
  • the adjusting member constituted by the locking pin 9 is integral with the pulse anchor 8 and serves as a pivot axis.
  • the adjustment member could be independent of the pulse anchor 8 and controlled by another pair of cams carried by the lower control plates 7 and upper 6 fixed to the axis 2 of the balance.
  • the escapement wheel 1 comprises three escape wheels 1.3, 1.4 and 1.5 each having a toothing.
  • the impulse teeth is carried by the lower escape wheel 1.3 and cooperates with the pulse anchor 8
  • the second locking toothing is carried by the intermediate escapement wheel 1.4 and cooperates with the fourth arm 14.7 of the locking anchor 14
  • the first locking toothing is carried by the upper escape wheel 1.5 and cooperates with the locking pin 9.
  • the number of escape wheel can be reduced as far as the mobile escape 1 comprises the three teeth cooperating respectively with the pulse anchor 8, the locking anchor 14 and the locking pin 9. These three teeth can indeed be carried by one or two wheels only.
  • the mechanism does not include a locking anchor, the locking of the escapement mobile being realized only by the integral locking pin of the anchor of impulse.
  • the locking pin comprises three distinct axial positions controlled by three cams carried by the balance shaft.
  • a constant force escapement mechanism may take various other forms (for example, a more conventional exhaust where the pulse anchor and the adjustment member (s) moves) in the same plane or in planes parallel to one another, which is essential in the present invention is that the escape mechanism comprises a pulse anchor pivoted on the frame of the movement cooperating on the one hand with the escape wheel and on the other hand with integral control members of the balance spring shaft and an auxiliary spring of constant force whose one end is fixed to a part of the movement frame and whose other end is angularly secured to the pulse anchor (8), the axis of rotation of the pulse anchor constituting a locking pin (9) cooperating with the escape wheel.
  • the escape mechanism comprises a pulse anchor pivoted on the frame of the movement cooperating on the one hand with the escape wheel and on the other hand with integral control members of the balance spring shaft and an auxiliary spring of constant force whose one end is fixed to a part of the movement frame and whose other end is angularly secured to the pulse anchor (8), the axis of rotation of the pulse anchor constitu

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission Devices (AREA)
  • Vibration Dampers (AREA)
  • Measurement Of Predetermined Time Intervals (AREA)
  • Springs (AREA)

Claims (8)

  1. Hemmungsmechanismus mit konstanter Kraft, insbesondere für ein Uhrwerk, das eine Unruh-Spiralfeder und ein Hemmungsdrehteil umfasst, das über ein Finissage-Räderwerk mit einem Federhaus verbunden ist; wobei dieser Hemmungsmechanismus eine Hilfsfeder (11) mit konstanter Kraft und einen Impulsanker (8) umfasst, der sich auf einem Teil des Gestells des Uhrwerks dreht, der einerseits mit dem Hemmungsdrehteil (1) und andererseits mit Betätigungsorganen zusammenwirkt, die fest mit der Welle der Unruh-Spiralfeder verbunden sind; wobei die Hilfsfeder (11) mit konstanter Kraft über eines ihrer Enden an einem Teil des Gestells des Uhrwerks befestigt ist und ihr anderes Ende winkelig mit dem Impulsanker (8) fest verbunden ist, dadurch gekennzeichnet, dass die Drehachse des Impulsankers eine Sperrachse (9) bildet, die mit dem Hemmungsdrehteil zusammenwirkt.
  2. Mechanismus nach Anspruch 1, dadurch gekennzeichnet, dass der Impulsanker (8) derart auf dem Uhrwerk gelagert ist, dass er sich winkelig und axial in Bezug zu dem Gestell des Uhrwerks bewegen kann.
  3. Mechanismus nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Hilfsfeder (11) mit konstanter Kraft eine Spiralfeder ist.
  4. Mechanismus nach Anspruch 3, dadurch gekennzeichnet, dass das innere Ende dieser Spiralfeder an einer Spiralrolle (10) befestigt ist, die winkelig fest mit dem Impulsanker (8) verbunden ist, während ihr äußeres Ende an einem Teil des Gestells des Uhrwerks befestigt ist.
  5. Mechanismus nach Anspruch 4, dadurch gekennzeichnet, dass die Spiralrolle (10) sich mit der Sperrachse (9) bei einer axialen Verlagerung dieser letzteren verlagert.
  6. Mechanismus nach Anspruch 4, dadurch gekennzeichnet, dass die Spiralrolle (10) gleitend auf der Sperrachse (9) gelagert ist.
  7. Uhrwerk, das einen Mechanismus nach einem der Ansprüche 1 bis 6 umfasst.
  8. Uhr, die ein Uhrwerk nach Anspruch 7 umfasst.
EP12001977.3A 2011-03-31 2012-03-21 Hemmungsmechanismus, insbesondere für Uhrwerk Active EP2506091B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH00590/11A CH704764A2 (fr) 2011-03-31 2011-03-31 Mécanisme d'échappement notamment pour mouvement d'horlogerie.

Publications (3)

Publication Number Publication Date
EP2506091A2 EP2506091A2 (de) 2012-10-03
EP2506091A3 EP2506091A3 (de) 2017-10-25
EP2506091B1 true EP2506091B1 (de) 2019-05-08

Family

ID=45976029

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12001977.3A Active EP2506091B1 (de) 2011-03-31 2012-03-21 Hemmungsmechanismus, insbesondere für Uhrwerk

Country Status (5)

Country Link
US (1) US20120250467A1 (de)
EP (1) EP2506091B1 (de)
JP (1) JP2012215576A (de)
CN (1) CN102736503A (de)
CH (1) CH704764A2 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2977830B1 (de) * 2014-07-23 2017-08-30 Nivarox-FAR S.A. Uhrhemmungsmechanismus mit konstanter Kraft
CN105422773A (zh) * 2015-12-23 2016-03-23 苏州市凯业金属制品有限公司 一种连杆式棘轮机构
CH713143A1 (fr) * 2016-11-17 2018-05-31 Richemont Int Sa Échappement pour pièce d'horlogerie.
JP6869759B2 (ja) * 2017-03-13 2021-05-12 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
JP6869758B2 (ja) * 2017-03-13 2021-05-12 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
WO2020007619A2 (fr) 2018-07-02 2020-01-09 Complitime Sa Mecanisme d'echappement horloger
EP3901707B1 (de) * 2020-04-23 2024-02-28 ETA SA Manufacture Horlogère Suisse Hemmungsmechanismus einer uhr
CH718624A2 (fr) 2021-05-12 2022-11-15 Rolex Sa Échappement à énergie constante pour pièce d'horlogerie.

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US3125890A (en) * 1964-03-24 Drive mechanism
US59658A (en) * 1866-11-13 Improvement in escapements for time-pieces
US289551A (en) * 1883-12-04 Chronometer-escapement
CH13248A (fr) 1896-11-24 1897-06-30 J Bornand Nouveau dispositif moteur pour montres et pendules
US1336263A (en) * 1919-05-20 1920-04-06 Tideman Sven Chronometer-escapement
CH120028A (fr) 1926-07-19 1927-08-16 Barbezat Bole Societe Anonyme Echappement à force constante de mouvement d'horlogerie.
DE619433C (de) 1934-10-27 1935-09-30 Francois Ramseyer Uhrtriebwerk mit konstanter Antriebskraft
US2385011A (en) * 1941-09-03 1945-09-18 Lurtz Carl Escapement mechanism
GB574229A (en) * 1943-11-13 1945-12-28 Thomas Alfred Gummersall A silent lever escapement
US2958180A (en) * 1956-05-31 1960-11-01 Marti Frederic Constant force escapement for electric time-pieces
US3034286A (en) * 1957-04-30 1962-05-15 Straumann Inst Ag Escapement
SU115942A2 (ru) * 1957-12-27 1958-11-30 А.М. Курицкий Стабилизатор импульса хронометрового хода
ATE469378T1 (de) * 2001-12-15 2010-06-15 Richemont Int Sa Konstantkraftvorrichtung
EP1528443B1 (de) 2003-10-28 2008-08-06 Francois-Paul Journe Konstantkraftvorrichtung für eine Uhr
DE60314156T2 (de) * 2003-12-04 2008-01-24 Montres Breguet S.A. Chronometerhemmung für Armbanduhren
EP1710636A1 (de) * 2005-04-06 2006-10-11 Daniel Rochat Hemmung für eine Uhr
EP1770452A1 (de) * 2005-09-30 2007-04-04 Peter Baumberger Chronometerhemmung für Uhren
EP1857891A1 (de) * 2006-05-17 2007-11-21 Patek Philippe Sa Spiralfeder-Spiralrollegesamtheit für ein Uhrwerk
US8147127B2 (en) * 2008-12-18 2012-04-03 Manufacture Roger Dubuis S.A. Fixation of a spiral spring in a watch movement
CN201698159U (zh) * 2010-06-07 2011-01-05 天津海鸥表业集团有限公司 手表的恒力装置

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Also Published As

Publication number Publication date
JP2012215576A (ja) 2012-11-08
CH704764A2 (fr) 2012-10-15
EP2506091A2 (de) 2012-10-03
EP2506091A3 (de) 2017-10-25
CN102736503A (zh) 2012-10-17
US20120250467A1 (en) 2012-10-04

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