EP2336832A2 - Schweizer Ankerhemmung - Google Patents

Schweizer Ankerhemmung Download PDF

Info

Publication number: EP2336832A2
Authority: EP; European Patent Office
Prior art keywords: pallets; teeth; anchor; wheel; pallet
Prior art date: 2009-12-21
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

EP10405219A

Other languages

English (en)

French (fr)

Other versions

EP2336832B1 (de

EP2336832A3 (de

Inventor

Raphaël Cettour-Baron

Alexandre Chiuve

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.)

Rolex SA

Original Assignee

Rolex 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.)

2009-12-21

Filing date

2010-11-12

Publication date

2011-06-22

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=43856028&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2336832(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

2010-11-12 Application filed by Rolex SA filed Critical Rolex SA

2011-06-22 Publication of EP2336832A2 publication Critical patent/EP2336832A2/de

2018-01-10 Publication of EP2336832A3 publication Critical patent/EP2336832A3/de

2020-12-02 Application granted granted Critical

2020-12-02 Publication of EP2336832B1 publication Critical patent/EP2336832B1/de

Status Active legal-status Critical Current

2030-11-12 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
- G04B15/00—Escapements
- G04B15/06—Free escapements
- G04B15/08—Lever escapements

Definitions

the present invention relates to a Swiss lever escapement comprising an escape wheel provided with teeth and an anchor provided on the one hand with an entry pallet and an output pallet, in turn in engagement with the teeth of the escape wheel, on the other hand a fork periodically engaged with a peg of a plate secured to the shaft of a regulating beam.
the Swiss anchor type escapement is composed of an anchor pivoted about an axis, and an escape wheel secured to an exhaust pinion.
the teeth of the wheel and the pallets of the anchor with which they are alternately in contact are the connecting elements between the wheel and the anchor.
the edge of the anchor wheel tooth is pushed by the torque provided by the mainspring through the gear train. against the impulse plane of the input pallet, which generates a torque around the pivot axis of the anchor. This couple puts the fork in contact with the peg of the balance plate and begins the energy transmission to the pendulum. This is the A pulse.
the value of the commitment of the output pallet is called virtual engagement.
the following phase, called pulling, results from the combined action of the force exerted by the tooth of the escape wheel on the draw face of the pallet and the orientation of this face with respect to the axis of oscillation of the anchor, called the angle of draw.
the anchor thus regains its second stable position and marks the end of the input function.
the General Theory of Watchmaking by L. Defossez (1952, The Swiss Chamber of Watchmaking) details the different types of escapement, among other things for free anchor escapements. If the tooth of the wheel and the anchor each have a pulse plane, the escapement has a shared impulse surface, the typical representative of which is the Swiss lever escapement. The shared impulse area exhaust is clearly the most reliable for a wristwatch. In all the cases mentioned by L. Defossez, the impulse planes of the pallets of the anchor are longer than those of the teeth of the escape wheel.
the object of the present invention is to improve the performance of a Swiss lever escapement, including compared to the solutions recommended by the state of the art.
this invention relates to a Swiss lever escapement according to claim 1.
the relative decrease in the width of the pallet is accompanied by increasing the width of the tooth of the escape wheel to maintain the same angular sector of power transmission and exploit it to the maximum.
two energy transmission modes can be distinguished: pulse A when the edge of the tooth moves on the pulse plane of the pallet by exerting a thrust and the pulse B when the plane of pulse of the tooth moves relative to the edge of the pallet by exerting a thrust.
the number of teeth of the escape wheel has little influence on the efficiency of the exhaust, and can vary over a wide range (for example, between 16 and 30 teeth).
the angle formed by the line of centers (lines connecting the centers of the axes of the balance, the anchor and the anchor wheel) has no significant influence on exhaust performance.
the ratio between the lifting angle of the balance and that of the anchor is in the case of the present invention between 3.7 and 7, preferably 4.5.
the figure 5 represents an embodiment of a Swiss lever escapement according to the present invention. Its parameters correspond to reference 2 in Table 2 below.
This exhaust has a 24-tooth escapement wheel.
the anchor is made by the Liga process in Ni with pallets of 0.125 mm thickness conventionally made of ruby. For the wheel, two configurations are tested, a first in Ni with a board of 0.13 mm and a second in Si with a board of 0.15 mm. It is obvious that other materials can be used for the anchor, the pallets of the anchor and the wheel. In particular, the anchor can be made in one piece with integrated pallets.
the figure 1 represents a Swiss lever escapement in a standard 20-tooth configuration, which serves as a basis for comparison. Its parameters correspond to reference 3 in Table 2.
the model used to calculate the values recorded in Table 2 predicts a yield increase of about 10% for the Ni solution and about 11% for the light Si version.
Table 1 below gives an overview of the amplitudes measured for the two configurations and the control exhaust (standard Swiss anchor with an anchor wheel made of Ni).
the amplitudes given below are averages made on at least five pieces, the standard deviation on these averages being typically 5 °.
⁇ b> TABLE 1 ⁇ / b> Reference number table 2 Measured amplitude [°] Exhaust control 3 275 Wheel in Si 2 307 Ni wheel 2 310 Ref.
the relative width Lpl of each of the pallets is advantageously ⁇ 45%.
the ratio of the arc length Ls, Lc of one of the output pallets, respectively of entry to the arc length d of one of the teeth of the escape wheel is preferably less than 1.
the length of the pulse plane La of one of said pallets is preferably less than 200 microns.
the ratio between the length of the pulse plane Lg of one of the teeth of the escape wheel and the length of the pulse plane La of one of the vanes is preferably greater than 1.5.

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Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
Micromachines (AREA)
Transmission Devices (AREA)
Vibration Dampers (AREA)
Handcart (AREA)

EP10405219.6A 2009-12-21 2010-11-12 Schweizer Ankerhemmung Active EP2336832B1 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CH19592009		2009-12-21

Publications (3)

Publication Number	Publication Date
EP2336832A2 true EP2336832A2 (de)	2011-06-22
EP2336832A3 EP2336832A3 (de)	2018-01-10
EP2336832B1 EP2336832B1 (de)	2020-12-02

Family

ID=43856028

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP10405219.6A Active EP2336832B1 (de)	2009-12-21	2010-11-12	Schweizer Ankerhemmung

Country Status (4)

Country	Link
US (1)	US8529122B2 (de)
EP (1)	EP2336832B1 (de)
JP (1)	JP5859197B2 (de)
CN (1)	CN102103357B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2015018636A2 (fr)	2013-08-05	2015-02-12	The Swatch Group Research And Development Ltd	Système régulateur pour montre mécanique
US11480923B2 (en) *	2016-11-17	2022-10-25	Richemont International Sa	Escapement for a timepiece with optimized torque transmission
EP4148505A1 (de)	2021-09-08	2023-03-15	Rolex Sa	Uhrmodul

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP2413202B1 (de) *	2010-07-30	2017-11-15	ETA SA Manufacture Horlogère Suisse	Verfahren zur Verbesserung der Verschleiss- und Stossfestigkeit einer Uhrwerkskomponente. Verschleiß- und stoßfester Anker für Uhrwerk
JP5891076B2 (ja) *	2012-03-09	2016-03-22	セイコーインスツル株式会社	がんぎ歯、該がんぎ歯を備えたがんぎ車、アンクル脱進器、ムーブメント、並びに機械式時計及びトルク伝達方法
CH706532B1 (fr) *	2012-11-26	2013-11-29	Detra Sa Zi	Echappement à ancre pour pièce d'horlogerie.
EP2871535B1 (de) *	2013-11-06	2017-06-28	ETA SA Manufacture Horlogère Suisse	Uhranker mit optimierten Hörnern
EP2952971B1 (de) *	2014-06-05	2016-10-12	Nivarox-FAR S.A.	Anker für Hemmungsmechanismus eines Uhrwerks
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
EP4498173A1 (de)	2023-07-28	2025-01-29	Flexous Mechanisms IP B.V.	Mechanische uhr

Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3628327A (en)	1969-04-14	1971-12-21	Suwa Seikosha Kk	Clubtooth lever escapement
EP1892589A1 (de)	2006-08-23	2008-02-27	Patek, Philippe SA	Schweizer Ankerhemmung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CH731A (fr) *	1889-03-13	1889-06-24	Calame Louis Camille	Echappement à ancre perfectionné, muni de levées ayant la forme de cylindres droits, dont les axes sont placés dans le même plan que celui de la roue
US1044054A (en) *	1912-01-24	1912-11-12	Paul E Jeanmairet	Escapement-wheel.
US3538705A (en) *	1968-11-07	1970-11-10	Hamilton Watch Co	Escapement
US3803830A (en) *	1972-06-29	1974-04-16	Bunker Ramo	Plastic escapement lever
US4041693A (en) *	1972-09-01	1977-08-16	Les Fabriques D'assortiments Reunies	Escapement for a timepiece
ATE557328T1 (de) *	2004-10-26	2012-05-15	Lvmh Swiss Mft Sa	Chronographmodul für armbanduhr
US7731415B2 (en) *	2005-07-04	2010-06-08	Montres Breguet Sa	High-performance lever escapement

2010
- 2010-11-12 EP EP10405219.6A patent/EP2336832B1/de active Active
- 2010-12-08 US US12/963,143 patent/US8529122B2/en active Active
- 2010-12-14 JP JP2010278078A patent/JP5859197B2/ja active Active
- 2010-12-20 CN CN201010610996.XA patent/CN102103357B/zh active Active

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3628327A (en)	1969-04-14	1971-12-21	Suwa Seikosha Kk	Clubtooth lever escapement
EP1892589A1 (de)	2006-08-23	2008-02-27	Patek, Philippe SA	Schweizer Ankerhemmung

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2015018636A2 (fr)	2013-08-05	2015-02-12	The Swatch Group Research And Development Ltd	Système régulateur pour montre mécanique
US10222757B2 (en)	2013-08-05	2019-03-05	The Swatch Group Research And Development Ltd	Regulating system for a mechanical watch
US11480923B2 (en) *	2016-11-17	2022-10-25	Richemont International Sa	Escapement for a timepiece with optimized torque transmission
EP4148505A1 (de)	2021-09-08	2023-03-15	Rolex Sa	Uhrmodul

Also Published As

Publication number	Publication date
CN102103357A (zh)	2011-06-22
EP2336832B1 (de)	2020-12-02
JP5859197B2 (ja)	2016-02-10
JP2011128153A (ja)	2011-06-30
CN102103357B (zh)	2016-01-20
US8529122B2 (en)	2013-09-10
US20110149696A1 (en)	2011-06-23
EP2336832A3 (de)	2018-01-10

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