EP2923242B1 - Ankerhemmung für ein uhrwerk - Google Patents

Ankerhemmung für ein uhrwerk Download PDF

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Publication number
EP2923242B1
EP2923242B1 EP13792342.1A EP13792342A EP2923242B1 EP 2923242 B1 EP2923242 B1 EP 2923242B1 EP 13792342 A EP13792342 A EP 13792342A EP 2923242 B1 EP2923242 B1 EP 2923242B1
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EP
European Patent Office
Prior art keywords
angle
lever
anchor
escapement
axis
Prior art date
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Active
Application number
EP13792342.1A
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English (en)
French (fr)
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EP2923242A1 (de
Inventor
Xuan Mai Tu
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.)
Detra SA
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Detra SA
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Application filed by Detra SA filed Critical Detra SA
Publication of EP2923242A1 publication Critical patent/EP2923242A1/de
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    • 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
    • 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

Definitions

  • the present invention relates to an anchor escapement for a timepiece, in particular for a spiral balance-type wristwatch.
  • the anchor escapement is a well known type of escapement, it comprises an anchor having entry and exit pallets cooperating with an escape wheel and a fork cooperating with the balance plate pin.
  • Anchor escapements generally have fixed elements for limiting the amplitude of oscillation of the anchor in the form of pins fixed to the plate. These limiting elements define the two rest positions of the anchor. In these positions, the fork bears against the pins while a tooth of the escape wheel bears against the rest plane of the pallet entry or exit of the anchor.
  • anchor escapements which comprise movable elements for limiting the amplitude of oscillation of the anchor either by a particular form of the escape wheel, or by a particular form of the pallets.
  • These types of exhaust are described in the documents GB 682,566 , CH 101 651 , CH 569997 , CH 702930 .
  • the tooth resting on the entry or exit pallets must be positioned very precisely with respect to the end of the pallet resting plane so that the phases of disengagement and Exhaust impulse unfold correctly. Due to manufacturing tolerances, an anchor escapement generally requires a final adjustment of the positions of the entry and exit pallets. This adjustment is usually long and delicate because it can strongly influence the performance of the exhaust.
  • An object of the present invention is to provide an anchor escapement that does not require adjustment operation of the pallets as a function of manufacturing tolerances.
  • Another object of the invention is to propose a mechanical timepiece equipped with such an escapement.
  • the design of the exhaust according to the present invention implies that the settings are greatly reduced, because it is at the end of the pulse phase that the anchor is in the maximum angular position, and it returns back to the front middle position to be in a rest position. This implies that it does not abut on external pins like a conventional exhaust, but that the rest position is an equilibrium position on the escape wheel. This equilibrium position is ensured by the design of the shape of the pallets and / or the escape wheel: no adjustment is necessary.
  • the ratio ⁇ 1 / ⁇ 2 between the input contact end angle ⁇ 1 and the exit rest angle ⁇ 2 is greater than 1.045 and / or the ratio ⁇ 2 / ⁇ 1 between output contact end angle ⁇ 2 and the input quiescent angle ⁇ 1 is greater than 1.045.
  • the exhaust comprises at least one driving plane, located either on one of the pallets of the anchor or on the escape wheel and oriented so that the contact between the anchor and the escape wheel via said at least one plane of conduct creates a torque that tends to reduce the angle between the anchor and the reference axis (V) connecting the axes of the anchor and the balance.
  • the present implementation provides at least one driving plan that causes the anchor to naturally arrive in an equilibrium position, since the driving plane is arranged to create a torque creating a movement towards the position balance.
  • angles ⁇ 1 and / or ⁇ 2 for driving the vanes or driving the teeth of the escape wheel are between 12 and 38 degrees.
  • the contact force exerted by the escape wheel is outside the friction cone, so the anchor will slide to arrive in the rest position.
  • the exhaust has limiting pins G1, G2 to limit movement of the anchor in case of impact.
  • a second aspect of the invention is a timepiece provided with an exhaust according to the first aspect.
  • the anchor 2 comprises a fork 24 which engages temporarily during oscillations with the pin 32, which causes an angular oscillation movement of the anchor 2 around its axis. anchor 21.
  • a line F which passes through the anchor axis 21 and the axis of symmetry of the fork 24. It is this line F which is used to measure the angle of the anchor 2 with the reference axis V. It is understood that if the fork is arranged on the balance and the pin on the anchor, then the line F will pass through the pin (anchor), and by the axis of anchor 21.
  • the positions of the different elements of the exhaust of the figure 1 correspond to the anchor entry rest position.
  • the tooth 12 of the escape wheel is resting on the rest plane 221 of the entry pallet 22 and the fork 24 is resting on the pin 41.
  • the plate pin 32 rotating in the counterclockwise comes into contact with the fork 24 to release the anchor from its input rest position, the tooth 12 of the escape wheel slides on the pulse plane 222 of the input pallet.
  • figure 6 represents the end of contact between the output pallet 23 and the tooth 13 of the escape wheel.
  • ⁇ 2 represents the angle between the reference axis V and the line F of the range.
  • the exit contact angle ⁇ 2 is also less than the entry angle of repose ⁇ 1 corresponding to the anchor entry rest position.
  • the invention proposes a type of exhaust as described below.
  • the entry pallet comprises a rest plane 621, a pulse plane 622, a driving plane 623 while the output pallet has a rest plane 631, a pulse plane 632, a driving plane 633
  • the line connecting the axes 61 and 71 serves as a reference axis V for measuring the angle of the line F of the anchor 6.
  • the exhaust is at the anchor entry rest position, the axis of the fork F is at an angle ⁇ 1 with respect to V. In this position, the tooth 52 of the escape wheel is in resting on the intersection of the rest and driving planes 621 and 623 of the entry pallet 62.
  • This position is a position of rest or equilibrium stable because the resting surfaces 621 and conduit 623 are oriented relative to the axis of rotation 61 so that the tooth 52 pushes the anchor counterclockwise if it is resting on the surface 621 and clockwise if it bears on the surface 623.
  • the intersection between the resting plane 631 and the driving plane 633 is also a stable rest or equilibrium position for the tooth 53 because the resting surfaces 631 and the driving surfaces 633 are oriented with respect to the rotation 61 so that the tooth 53 pushes the anchor clockwise if it is on the surface 631 and counterclockwise if it is on the surface 633.
  • the driving and resting surfaces are arranged so that when the tooth of the escape wheel is resting on a driving surface, it moves the anchor to reduce the angle between the axis F of the fork and the reference axis V, while if it is resting on a resting surface, it moves the anchor to increase this angle.
  • the figure 8 illustrates the details of the 623 and rest plans 621.
  • n621 is the normal to the plane 621 and n623 is the normal to the plane 623 while d1 represents the line connecting the intersection of the planes 621, 623 and the axis 61.
  • the angle ⁇ 1 between n621 and d1 represents the draw angle of the input pallet and the angle ⁇ 1 between n623 and d1 represents the driving angle of the entry pallet.
  • figure 9 illustrates the details of the 633 and rest 631 plans.
  • the angle ⁇ 2 between n631 and d2 represents the draw angle of the output pallet and the angle ⁇ 2 between n633 and d2 represents the driving angle of the output pallet.
  • the value of ⁇ 1, ⁇ 2 must be between 5 and 20 degrees and the value of ⁇ 1 , ⁇ 2 between 12 and 38 degrees.
  • the figure 10 represents the end of contact between the input pallet and the tooth 52 of the escape wheel, in this position the angle between F and V is equal to ⁇ 1. This angle is chosen so that, given manufacturing tolerances, the tooth 53 still meets the driving plan 633. Under these conditions, the tooth 53, based on the surface 633, pushes the anchor counterclockwise to bring it to the stable output position represented by the figure 11 .
  • the angle ⁇ 1 is larger than the angle ⁇ 2, unlike the case of a conventional exhaust.
  • figure 12 represents the end of contact between the output pallet and the tooth 53 of the escape wheel.
  • ⁇ 2 represents the angle between the line V and the axis F of the range. This angle ⁇ 2 is also greater than the angle ⁇ 1 of the input rest position.
  • This ratio can vary according to several parameters such as the angles ⁇ 1, ⁇ 2, the number of teeth of the escape wheel, the width of the head of the teeth of the escape wheel, width of the pallets etc.
  • the operating principle of this exhaust is practically identical to that of the figure 7 except for driving plans.
  • the driving planes 623 and 633 are placed on the pallets of the anchor while in this case these driving plans are placed at the teeth of the escape wheel.
  • the figure 14 represents the details of the 821 and rest 921 driving plans.
  • the angle ⁇ 1 between n921 and d1 represents the draw angle of the entry pallet and the angle ⁇ 1 between n821 and d1 represents the inlet duct angle of the tooth of the escape wheel. It can be seen that the two planes have the same functions as those in the case of the first execution example.
  • figure 15 illustrates the details of the 831 and the 931 Resting Plans.
  • the angle ⁇ 2 between n931 and d2 represents the pulling angle of the output pallet and the angle ⁇ 2 between n831 and d2 represents the output pipe angle of the tooth of the escape wheel.
  • the figure 16 represents a variant of the second embodiment of the exhaust according to the invention.
  • the exhaust has, in addition to the elements of Example 13, two limiting pins G1, G2. These pins do not participate in the normal operation of the exhaust but they aim to limit the amplitude of the anchor in the case of very large shocks. It is obvious that these pins must be placed outside the trajectories of the anchor in the case of normal operation, because unlike a conventional exhaust, they do not serve as mechanical stops during normal operation.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission Devices (AREA)
  • Micromachines (AREA)

Claims (6)

  1. Ankerhemmung, umfassend:
    - ein Hemmungsrad (5; 8),
    - eine Unruh (7),
    - eine Unruhachse (71), um welche die Unruh (7) schwingen kann,
    - einen Anker (6; 9) mit einer Eingangspalette (62; 92) und einer Ausgangspalette (63; 93),
    - eine Ankerachse (61; 91), um welche der Anker (6; 9) in einer winkligen Schwingbewegung schwingen kann,
    - wobei eine Gerade (V) durch die Unruhachse (71) und die Ankerachse (61; 91) verläuft,
    dadurch gekennzeichnet, dass das Hemmungsrad (5; 8), die Eingangspalette (62; 92) und die Ausgangspalette (63; 93) angeordnet sind, damit ein Eingangskontaktendwinkel β1 des Ankers (6; 9) mit der Geraden (V) größer ist als ein Ausgangsruhewinkel δ2 des Ankers (6; 9) mit der Geraden (V),
    und/oder damit ein Ausgangskontaktendwinkel β2 des Ankers (6; 9) mit der Geraden (V) größer ist als ein Eingangsruhewinkel δ1 des Ankers (6; 9) mit der Geraden (V).
  2. Hemmung nach Anspruch 1, dadurch gekennzeichnet, dass das Verhältnis β1/δ2 zwischen dem Eingangskontaktendwinkel β1 und dem Ausgangsruhewinkel δ2 größer als 1,045 ist und/oder dass das Verhältnis β2/δ1 zwischen dem Ausgangskontaktendwinkel β2 und dem Eingangsruhewinkel δ1 größer als 1,045 ist.
  3. Hemmung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass sie mindestens eine Führungsebene (623, 633; 821, 831) aufweist, die sich entweder auf einer der Paletten (62, 63; 92, 93) des Ankers (6; 9) oder auf dem Hemmungsrad (5; 8) befindet und derart ausgerichtet ist, dass der Kontakt zwischen dem Anker (6; 9) und dem Hemmungsrad (5; 8) über die mindestens eine Führungsebene ein Moment erzeugt, das tendenziell den Winkel zwischen dem Anker (6; 9) und der Referenzachse (V), welcher die Ankerachse (61; 91) und die Unruhachse (71) verbindet, reduziert.
  4. Hemmung nach Anspruch 3, dadurch gekennzeichnet, dass Führungswinkel γ1 und/oder γ2 der Paletten (62, 63; 92, 93) oder Führungswinkel der Zähne des Hemmungsrads (5; 8) zwischen 12 und 38 Grad inklusive sind.
  5. Hemmung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass sie Begrenzungsstifte (G1, G2) für die Begrenzung einer Bewegung des Ankers (6; 9) bei einem Stoß besitzt.
  6. Uhr, ausgestattet mit einer Hemmung nach einem der Ansprüche 1 bis 5.
EP13792342.1A 2012-11-26 2013-11-14 Ankerhemmung für ein uhrwerk Active EP2923242B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH02536/12A CH706532B1 (fr) 2012-11-26 2012-11-26 Echappement à ancre pour pièce d'horlogerie.
PCT/EP2013/073807 WO2014079765A1 (fr) 2012-11-26 2013-11-14 Echappement a ancre pour piece d'horlogerie

Publications (2)

Publication Number Publication Date
EP2923242A1 EP2923242A1 (de) 2015-09-30
EP2923242B1 true EP2923242B1 (de) 2016-06-15

Family

ID=49596287

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13792342.1A Active EP2923242B1 (de) 2012-11-26 2013-11-14 Ankerhemmung für ein uhrwerk

Country Status (6)

Country Link
US (1) US9323220B2 (de)
EP (1) EP2923242B1 (de)
JP (1) JP6214669B2 (de)
CN (1) CN104813241B (de)
CH (1) CH706532B1 (de)
WO (1) WO2014079765A1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107132749B (zh) * 2017-05-27 2019-10-01 江苏金钿实业有限公司 一种机械手表用擒纵结构
CN107145054B (zh) * 2017-05-27 2019-11-08 江苏金钿实业有限公司 一种控制机械手表各指针精确移动的多擒纵控制方法
WO2019219679A1 (fr) * 2018-05-16 2019-11-21 Dominique Renaud Sa Mécanisme d'échappement pour pièce d'horlogerie
JP7103041B2 (ja) * 2018-08-03 2022-07-20 セイコーエプソン株式会社 アンクル、ムーブメント、時計
CH716337A1 (fr) * 2019-06-19 2020-12-30 Mft Dhorlogerie Audemars Piguet Sa Ensemble pour échappement à ancre de mouvement horloger.
EP3901707B1 (de) * 2020-04-23 2024-02-28 ETA SA Manufacture Horlogère Suisse Hemmungsmechanismus einer uhr
WO2023214300A1 (fr) 2022-05-03 2023-11-09 Chronode Sa Organe réglant pour mouvement horloger
EP4273634A1 (de) 2022-05-03 2023-11-08 Chronode SA Regulierorgan für uhrwerk

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH101651A (fr) * 1922-09-25 1923-10-01 Assortiments Georges Perrenoud Echappement à ancre.
GB682566A (en) * 1951-01-25 1952-11-12 Ole Kaada Improvements in or relating to lever escapements
US3146581A (en) * 1961-12-26 1964-09-01 United States Time Corp "d" jewel watch escapement
US3186238A (en) * 1963-04-29 1965-06-01 Fairchild Camera Instr Co Self-starting timing escapement
US3685279A (en) * 1971-07-15 1972-08-22 Ivnghans Gmbh Fa Geb Continuous switching device for the gear mechanism of an electric wrist watch
CH1082672A4 (de) * 1972-07-19 1975-03-14
DE60314156T2 (de) * 2003-12-04 2008-01-24 Montres Breguet S.A. Chronometerhemmung für Armbanduhren
CH705276B1 (fr) * 2007-12-28 2013-01-31 Chopard Technologies Sa Organe d'entraînement et de transmission pour un échappement à ancre, plateau et échappement en étant équipés, et pièce d'horlogerie les comportant.
JP5462006B2 (ja) * 2009-02-17 2014-04-02 セイコーインスツル株式会社 脱進調速機、機械式時計、及びアンクル体の製造方法
CH701846B8 (fr) * 2009-09-21 2015-06-15 Rolex Sa Spiral plat pour balancier d'horlogerie et ensemble balancier-spiral.
EP2336832B1 (de) * 2009-12-21 2020-12-02 Rolex Sa Schweizer Ankerhemmung
CH702930A2 (fr) * 2010-04-01 2011-10-14 Patek Philippe Sa Geneve Echappement d'horlogerie à protection contre les chocs.
JP5485859B2 (ja) * 2010-11-17 2014-05-07 セイコーインスツル株式会社 アンクル脱進機及びこれを備えた機械式時計

Also Published As

Publication number Publication date
JP2015535602A (ja) 2015-12-14
EP2923242A1 (de) 2015-09-30
JP6214669B2 (ja) 2017-10-18
CN104813241A (zh) 2015-07-29
US20150301501A1 (en) 2015-10-22
US9323220B2 (en) 2016-04-26
CH706532B1 (fr) 2013-11-29
WO2014079765A1 (fr) 2014-05-30
CN104813241B (zh) 2017-07-07

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