EP2923242A1 - Echappement a ancre pour piece d'horlogerie - Google Patents
Echappement a ancre pour piece d'horlogerieInfo
- Publication number
- EP2923242A1 EP2923242A1 EP13792342.1A EP13792342A EP2923242A1 EP 2923242 A1 EP2923242 A1 EP 2923242A1 EP 13792342 A EP13792342 A EP 13792342A EP 2923242 A1 EP2923242 A1 EP 2923242A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- anchor
- angle
- escape wheel
- exit
- axis
- 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
Links
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
- 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 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 impulse of
- 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.
- a first aspect of the invention is an anchor escapement comprising:
- 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
- the ratio ⁇ / ⁇ 2 between the input contact end angle ⁇ 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 ⁇ 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 makes the anchor naturally arrive in a balanced position, because the driving plane is arranged to create a torque creating a movement towards the position balance.
- angles ⁇ and / or ⁇ 2 for driving the vanes or for 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 G 1, G 2 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.
- Figure 1 shows a general plan view of a classic Swiss lever escapement.
- Figure 2 shows the end of contact between the entry pallet and the tooth of the escape wheel of a classic Swiss anchor escapement.
- FIG. 3 represents the exit rest position of a
- FIG. 4 represents a first case of positioning error of a classic Swiss anchor escapement.
- FIG. 5 represents a second case of positioning error of a classic Swiss anchor escapement.
- Figure 6 shows the end of contact between the output pallet and the tooth of the escape wheel of a classic Swiss anchor escapement.
- Figure 7 shows a first example of execution of
- FIG. 8 illustrates the detail of the driving and resting plans of entry of the first example of execution of the escapement according to the invention.
- FIG. 9 illustrates the detail of the driving and resting planes of the first example of execution of the escapement according to the invention.
- FIG. 10 represents the end of contact between the entry pallet and the tooth of the escape wheel of the first embodiment of the escapement according to the invention.
- FIG. 11 shows the exit rest position of the first embodiment of the escapement according to the invention.
- Figure 12 shows the end of contact between the output pallet and the tooth of the escape wheel of the first embodiment of the exhaust according to the invention.
- FIG. 13 represents a second example of execution of the escapement according to the invention.
- FIG. 14 represents the detail of the conduction and rest planes in the input rest position of the example of FIG. 13.
- FIG. 15 represents the detail of the conduction and rest planes in the rest position. output of the example of FIG. 13.
- Figure 16 shows a variant of the second example
- Figure 1 shows a general plan view of a classic Swiss lever escapement. This exhaust has:
- an anchor 2 rotating about the axis 21 and comprising an entry pallet 22, an exit pallet 23 and a fork 24
- balance plate 3 rotating about the axis 31 and carrying an ankle 32
- the anchor 2 comprises a fork 24 which engages temporarily during the
- the positions of the different elements of the escapement of FIG. 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 2 shows the end of contact between the entry pallet and the tooth 12 of the escape wheel.
- the line F of the fork 24 is at an angle ⁇ with respect to the reference axis V passing through the axes 21 and 31.
- the tooth 13 comes into contact with the rest plane 231 and pushes the fork of the anchor towards the pin 42 to stabilize at the exit rest position represented by FIG.
- the ideal position of the end of the tooth relative to the end of the plane of rest of the pallets is of the order of 0.05 mm.
- the line F of the fork 24 makes an angle ⁇ 2 with respect to the reference axis V passing through the axes 21 and 31. It can be seen that in a conventional anchor escapement, the angle of end of input contact al is smaller than the exit angle of exit ⁇ 2.
- the tooth 13 can rest either on the pulse plane 232 instead of the rest plane 231 (FIG. 4) or on the rest plane 231 at a great distance from the end of this plane ( Figure 5). In these two cases, the efficiency of the exhaust decreases significantly.
- Figure 6 shows the end of contact between the output pallet 23 and the tooth 13 of the escape wheel.
- 0C2 represents the angle between the reference axis V and the line F of the range.
- the exit contact angle 0C2 is also less than the entry angle of repose ⁇ corresponding to the anchor entry rest position.
- the invention proposes a type of exhaust as described below.
- Figure 7 shows a first example of execution of
- This exhaust has:
- an anchor 6 rotating about the axis 61 and comprising an entry pallet 62 and an exit pallet 63 and a fork 64
- balance plate 7 rotating about the axis 71 and carrying an ankle 72.
- the entry pallet includes a rest plan 621, a plan
- 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 A makes an angle ⁇ with respect to V. In this position, the tooth 52 of the wheel of exhaust is supported 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 surfaces and rest are
- Figure 8 illustrates the detail of the driving plans 623 and rest 621.
- n621 is the normal to the plane 621 and n623 is the normal to the plane 623 while dl represents the line connecting the intersection of the planes 621, 623 and the axis 61.
- the angle ⁇ between n621 and d1 represents the draw angle of the entry pallet and the angle ⁇ between n623 and d1 represents the driving angle of the entry pallet.
- FIG. 9 illustrates the detail of the driving plans 633 and rest 631.
- 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 ⁇ , ⁇ 2 must be between 5 and 20 degrees and the value of ⁇ 1 , ⁇ 2 between 12 and 38 degrees.
- FIG. 10 represents the end of contact between the entry pallet and the tooth 52 of the escape wheel, in this position the angle between A and V is equal to ⁇ . This angle is chosen so that, given the 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 shown in FIG.
- the angle ⁇ is larger than the angle ⁇ 2 in contrast to the case of a conventional exhaust.
- Figure 12 shows 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 A of the range. This angle ⁇ 2 is also greater than the angle ⁇ of the input rest position.
- This ratio can vary according to several parameters such as the angles ⁇ , ⁇ 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.
- FIG. 13 represents a second example of execution of the escapement according to the invention.
- This exhaust has: an escape wheel 8 rotating about the axis of rotation 81 in the clockwise direction.
- an anchor 9 rotating about the axis 91 and comprising an entry pallet 92 and an exit pallet 93 and a fork 94
- balance plate 7 rotating about the axis 71 and carrying an ankle 72.
- Figure 14 shows the details of the driving plans 821 and 921 rest.
- the angle ⁇ between n921 and d1 represents the draw angle of the entry pallet and the angle ⁇ between n821 and d1 represents the inlet duct angle of the exhaust wheel tooth.
- Figure 15 illustrates the detail of the driving plans 831 and 931 rest.
- the angle ⁇ 2 between ⁇ 931 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.
- Figure 16 shows a variant of the second example
- the exhaust has, in addition to the elements of Example 13, two limiting pins G 1, G 2. 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission Devices (AREA)
- Micromachines (AREA)
Abstract
Description
Claims
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 true EP2923242A1 (fr) | 2015-09-30 |
| EP2923242B1 EP2923242B1 (fr) | 2016-06-15 |
Family
ID=49596287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP13792342.1A Active EP2923242B1 (fr) | 2012-11-26 | 2013-11-14 | Echappement a ancre pour piece d'horlogerie |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US9323220B2 (fr) |
| EP (1) | EP2923242B1 (fr) |
| JP (1) | JP6214669B2 (fr) |
| CN (1) | CN104813241B (fr) |
| CH (1) | CH706532B1 (fr) |
| WO (1) | WO2014079765A1 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4273634A1 (fr) | 2022-05-03 | 2023-11-08 | Chronode SA | Organe réglant pour mouvement horloger |
| WO2023214300A1 (fr) | 2022-05-03 | 2023-11-09 | Chronode Sa | Organe réglant pour mouvement horloger |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| US11860576B2 (en) * | 2018-05-16 | 2024-01-02 | François Besse | Escapement mechanism for timepiece |
| 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 (fr) * | 2020-04-23 | 2024-02-28 | ETA SA Manufacture Horlogère Suisse | Mecanisme d'echappement d'une piece d'horlogerie |
| EP4160323A1 (fr) * | 2021-10-04 | 2023-04-05 | CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et Développement | Régulateur mécanique horloger comprenant un échappement semi-libre auto-démarrant à faible angle de levée |
| EP4383012A1 (fr) * | 2022-12-08 | 2024-06-12 | ETA SA Manufacture Horlogère Suisse | Profil auto-demarrant pour echappement d'horlogerie |
Family Cites Families (13)
| 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 |
| CH567293B5 (fr) * | 1972-07-19 | 1975-09-30 | Far Fab Assortiments Reunies | Echappament à ancre pour pièce d'horlogerie |
| 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 (fr) * | 2009-12-21 | 2020-12-02 | Rolex Sa | Échappement à ancre suisse |
| 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 |
-
2012
- 2012-11-26 CH CH02536/12A patent/CH706532B1/fr not_active IP Right Cessation
-
2013
- 2013-11-14 EP EP13792342.1A patent/EP2923242B1/fr active Active
- 2013-11-14 WO PCT/EP2013/073807 patent/WO2014079765A1/fr not_active Ceased
- 2013-11-14 JP JP2015543395A patent/JP6214669B2/ja not_active Expired - Fee Related
- 2013-11-14 CN CN201380061492.9A patent/CN104813241B/zh not_active Expired - Fee Related
- 2013-11-14 US US14/443,827 patent/US9323220B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2014079765A1 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4273634A1 (fr) | 2022-05-03 | 2023-11-08 | Chronode SA | Organe réglant pour mouvement horloger |
| WO2023214300A1 (fr) | 2022-05-03 | 2023-11-09 | Chronode Sa | Organe réglant pour mouvement horloger |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6214669B2 (ja) | 2017-10-18 |
| JP2015535602A (ja) | 2015-12-14 |
| US20150301501A1 (en) | 2015-10-22 |
| CN104813241B (zh) | 2017-07-07 |
| US9323220B2 (en) | 2016-04-26 |
| CH706532B1 (fr) | 2013-11-29 |
| WO2014079765A1 (fr) | 2014-05-30 |
| EP2923242B1 (fr) | 2016-06-15 |
| CN104813241A (zh) | 2015-07-29 |
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