EP2952971A1 - Anker für Hemmungsmechanismus eines Uhrwerks - Google Patents

Anker für Hemmungsmechanismus eines Uhrwerks Download PDF

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Publication number
EP2952971A1
EP2952971A1 EP14171389.1A EP14171389A EP2952971A1 EP 2952971 A1 EP2952971 A1 EP 2952971A1 EP 14171389 A EP14171389 A EP 14171389A EP 2952971 A1 EP2952971 A1 EP 2952971A1
Authority
EP
European Patent Office
Prior art keywords
fork
main body
anchor
tenon
anchor according
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
Application number
EP14171389.1A
Other languages
English (en)
French (fr)
Other versions
EP2952971B1 (de
Inventor
Alexandre Fussinger
Marc Stranczl
Frédéric Vaucher
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.)
Nivarox Far SA
Nivarox SA
Original Assignee
Nivarox Far SA
Nivarox 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 Nivarox Far SA, Nivarox SA filed Critical Nivarox Far SA
Priority to EP14171389.1A priority Critical patent/EP2952971B1/de
Priority to US14/721,062 priority patent/US9575465B2/en
Priority to JP2015111102A priority patent/JP6209181B2/ja
Priority to CN201510300339.8A priority patent/CN105319938B/zh
Publication of EP2952971A1 publication Critical patent/EP2952971A1/de
Priority to HK16109415.0A priority patent/HK1221997A1/zh
Application granted granted Critical
Publication of EP2952971B1 publication Critical patent/EP2952971B1/de
Active legal-status Critical Current
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
    • 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 for an escapement mechanism of a watch movement, in particular an escapement of Swiss anchor type.
  • the fork of the anchor is an insert, offset from the plane of the rod and the stinger.
  • the fork is fixed to the rod by means of a tenon driven into respective holes made in the fork and the rod, the tenon also realizing the spacing between the plane of the rod and the fork.
  • This spacing along an axis perpendicular to the general plane of the anchor must be perfectly mastered during the manufacture of the anchor and in particular during the assembly of the dart on the rod to obtain optimum operation of the mechanism in which the anchor is integrated.
  • the manufacturing tolerance for achieving this spacing is typically of the order of ⁇ 20 microns.
  • the tenons are metal parts of very small diameters made by bar turning. Typically these tenons are made by bar turning from a steel bar, brass or nickel silver. These tenons conventionally have a diameter of about 0.24 mm.
  • a current problem with the tenons turned is that they have on their front faces "nipples" resulting from the cutting operation during their manufacture. Indeed, when the chisel separates the tenon of the material bar at the end of the bar turning operation, the tenon is detaches from the bar and a small cone of material remains on the end surfaces. This small cone of material called “nipple” is not desired because it does not allow to form a clean end face and perpendicular to the cylinder that can be used as a reference to perform an assembly operation of the dart on the rod with a spacing specific. These tenons can not be hunted "flush” with the rod. In addition, the assembly of these tenons is difficult to achieve because they tend, given their small size to deform during assembly resulting in a loss of final position of the range relative to the sting which has a negative impact on the performance of the exhaust system.
  • An object of the invention is to provide an anchor for a precise and reliable watch exhaust mechanism over a long period of use.
  • Another object of the invention is to provide a robust anchor that is economical to manufacture.
  • An object of the invention is also to provide an anchor for a clock escapement mechanism for optimizing the functions of the fork, the rod and the pallets of the anchor.
  • Yet another object of the invention is to provide an anchor for a clockwork escapement mechanism in which the spacing between the plane of the rod and the stinger along an axis perpendicular to the general plane of the anchor is perfectly controlled.
  • an anchor for an escape mechanism for a watch movement includes a fork portion, a pallet support portion, pallets mounted on the pallet support portion, and a batten interconnecting the pallet portion. support pallets at the fork portion.
  • the fork portion includes a fork, a dart and a tenon.
  • the batten and the pallet support portion are integral and form a monolithic main body of the anchor, and the fork is an insert attached to the main body by means of the peeled stud and / or assembled in a fixing hole in the body main and a fixing hole in the fork.
  • the reported fork is spaced from the main body.
  • the post is made of a material that does not have a plastic field under stress.
  • the surfaces of the tenon engaging the fixing holes comprise a surface finish obtained by grinding and / or polishing.
  • the tenon has a hardness greater than or equal to 850HV.
  • the material of the tenon may be a metal matrix composite material, a ceramic, a crystalline or amorphous metal, treated or not to achieve a hardness greater than or equal to 850HV.
  • the tenon is preferably made from a material selected from the group consisting of sapphire, ruby, aluminum oxide, zirconium oxide, tungsten carbide, monocrystalline corundum, or polycrystalline corundum. silicon nitride, silicon carbide, hardened steel, tungsten carbide in a cobalt matrix and amorphous metal alloys.
  • amorphous alloys iron-nickel-based amorphous alloys and cobalt-nickel-based amorphous alloys, typically the Fe52Ni22Nb6VB15 alloy or the Co50Ni22Nb8V5B15 alloy, will be chosen in particular.
  • the tenon has a generally cylindrical shape having at each of its ends a front face extending perpendicularly to the longitudinal axis of the tenon.
  • the end faces have a perpendicularity defect with respect to the axis less than 1 °, and preferably the surfaces of the post engaging the fixing holes and the end faces comprise a surface finish obtained by grinding.
  • the fork is made of a material selected from the group of materials including silicon, silicon nitride, silicon carbide, nickel, nickel-phosphorus alloys (especially the alloy). NiP12), and amorphous alloys, especially iron-nickel based alloys and amorphous cobalt-nickel alloys, typically the Fe52Ni22Nb6VB15 alloy or the Co50Ni22Nb8V5B15 alloy.
  • the main body is made of a material selected from the group of materials including steel, nickel silver, silicon, silicon nitride, silicon carbide, nickel, nickel alloys -Phosphorus, (in particular NiP12), and amorphous alloys, in particular alloys based on iron-nickel, amorphous alloys based on cobalt-nickel, and amorphous alloys based on zirconium typically a Fe52Ni22Nb6VB15 alloy or an alloy Co50Ni22Nb8V5B15 or an alloy Zr65.7Cu15.6Ni11.7AI3.7Ti3.3.
  • the main body includes a spacer tube formed around the attachment hole and configured to define the spacing between the fork and the main body.
  • the fork includes a spacer tube formed around the attachment hole and configured to define the spacing between the fork and the main body.
  • the invention also relates to a watch exhaust mechanism comprising an anchor as described, and a watch movement comprising an escape mechanism.
  • an anchor 2 for a Swiss type escapement mechanism for a watch movement comprises a fork portion 4, a support portion of the pallets 7, pallets 6, and a rod 8 interconnecting the support portion. pallets at the fork part.
  • the anchor is rotatably mounted in the movement (not shown) by means of a pivot 10.
  • the vanes 6 cooperate with the teeth of an escape wheel (not shown) of an exhaust mechanism which is connected to a power source providing a rotational torque to the escape wheel.
  • One of the pallets constitutes the entry pallet and the other constitutes the exit pallet, that according to the alternation of rotation of the anchor.
  • the fork portion 4 comprises a fork 12, a stinger 14 and a post 16.
  • the fork 12 comprises a first horn 22a and a second horn 22b.
  • the fork conventionally engages a peg secured to an oscillating wheel of a pendulum.
  • the first horn 22a functions as input horn and the second horn 22b as output horn.
  • the functions of the first and second horns are reversed.
  • the stinger prevents the anchor from pivoting so that the fork passes the wrong side of the ankle during a shock.
  • the illustrated mechanism corresponds to a classic Swiss-anchor type escapement as described in more detail in pages 99 to 128 of the book entitled “Theory of Watchmaking” ISBN 2-940025-10-X incorporated herein by reference. As this principle is well known, the conventional elements and their operation will not be described in more detail in the present application.
  • the rod and support arms of the pallets are integral and form a main body 3 of the anchor 2.
  • the fork 12 is an insert attached to the main body 3 by means of the post 16 driven into a fixing hole 18 formed in the main body.
  • the spacing of the fork of the main body of the anchor makes it possible to optimize the function of the fork, in particular in order to reduce the losses due to the friction between the fork and the ankle, without limiting the choice of the material and the process of manufacture for the realization of the rest of the anchor - stick, dart and support of the pallets.
  • the reported fork also allows to shift the plane of the fork relative to the pallets, which allows for a compact exhaust device.
  • the fork can be made of different materials including silicon, silicon nitride, and silicon carbide, silicon coated with a layer of silicon oxide, silicon coated with a diamond layer, by various methods of fabrication including photolithography, and DRIE (Deep Reactive-Ion Etching) type etching a wafer of one of these materials.
  • the fork can also be made of nickel or phosphorus nickel (NiP, NiP12), for example by a LIGA type electroforming process (Roentgenlithographie, Galvanoformung, Abformung). This fork can also be made of metal or a metal alloy in crystalline or amorphous form by mechanical shaping.
  • the amorphous alloys based on iron-nickel, for example the alloy Fe52Ni22Nb6VB15, amorphous alloys based on cobalt-nickel, for example the alloy Co50Ni22Nb8V5B15 as well as the amorphous alloys based on zirconium, for example the alloy Zr65 .7Cu15.6Ni11.7A13.7Ti3.3 are particularly suitable.
  • the fork could also be made of an alloy of copper and beryllium, an alloy of austenitic cobalt, austenitic stainless steel or steel type HIS (High Interstitial Steels).
  • the main body 3 of the anchor 2 can also be made of different materials including silicon, silicon nitride, and silicon carbide, silicon coated with a layer of silicon oxide, silicon coated with a layer of diamond by various manufacturing processes including photolithography processes, and DRIE (Deep Reactive-Ion Etching) etching.
  • the main body 3 may also be made of titanium, aluminum, magnesium, steel, typically austenitic stainless steel or steel type HIS (High Interstitials Steels), copper alloy (typically nickel silver or beryllium copper ), an austenitic cobalt alloy or an austenitic nickel alloy or an amorphous alloy.
  • amorphous alloys based on iron-nickel, for example the alloy Fe52Ni22Nb6VB15, amorphous alloys based on cobalt-nickel, for example the alloy Co50Ni22Nb8V5B15 as well as the amorphous alloys based on zirconium, for example the alloy Zr65 .7Cu15.6Ni11.7A13.7Ti3.3 are particularly suitable.
  • the main body 3 and the fork 12 are made by a phosphor nickel LIGA type electroforming process, typically made of NiP12.
  • the main body 3 is made by a LIGA process typically in nickel phosphorus or nickel and the range 12 is made by etching typically from a silicon wafer.
  • the tenon 16 is made of a material having no or substantially no plastic field under stress and the tenon preferably has a hardness greater than or equal to 850HV.
  • the tenon is made from a material selected from the group consisting of sapphire, ruby, aluminum oxide, zirconium oxide, tungsten carbide monocrystalline corundum, or polycrystalline, the nitride of silicon, silicon carbide, hardened steel, tungsten carbide in a cobalt matrix, amorphous alloys, especially iron-nickel based alloys and amorphous cobalt-nickel alloys.
  • a Fe52Ni22Nb6VB15 alloy or a Co50Ni22Nb8V5B15 alloy may be used.
  • the post has a generally cylindrical shape having at each of its ends a front face extending perpendicularly to its longitudinal axis and is made of ruby, comprising a finish by grinding to obtain precise dimensions with tolerances less than circularity ⁇ 1 ⁇ m, diameter ⁇ 1.5 ⁇ m, length ⁇ 7 ⁇ m.
  • the front faces of the tenon have a perpendicularity defect of less than 1 °.
  • the hardness of the tenon material greater than or equal to 850HV makes it possible to produce the tenon with a very precise diameter and perfectly perpendicular front faces between them and thus to carry out a driving operation of the tenon in the orifice of the fork and the body 3 by decreasing the risk of breakage of these components.
  • the stability of the fixation and the Positioning accuracy between the post and these components is also improved over conventional assemblies.
  • the main body 3 and the fork 10 are manufactured by a LIGA type electroforming process, this is a very economical manufacturing process for small parts, while being very precise in the direction of l thickness of the electroformed layer as well as in the general plane of the main body.
  • the main body 3 is manufactured by a LIGA type electroforming process. then machined by mechanical recovery to achieve the different levels and chamfers.
  • a spacer tube 19a is configured, in particular in length, to define the spacing between the fork 12 and the stinger 14.
  • the fork 10 is made by etching typically from a silicon wafer.
  • a ruby pin 16 is driven into the hole of the board and the silicon fork is assembled with play on the pin which protrudes then is glued, the fork being pressed against the end surface of the spacer tube 19a.
  • the main body 3 is manufactured by a LIGA type electroforming process to form a layer of constant thickness.
  • the fork 10 is made by etching typically from a silicon wafer on at least two levels to form a spacer tube 19b extending around the orifice 20 of the fork 14.
  • the spacer tube 19b is configured, in particular in length, to define the spacing between the fork 12 and the plank of the main body 3.
  • a tenon ruby 16 is driven into the hole of the board and the silicon fork is assembled with clearance on the post that exceeds and is glued. the end of the spacer tube 19 of the fork being abutted against the surface of the main body 3.
  • connection between the tenon and the fork and / or the main body will be different in nature depending on whether the fork and / or the post is made of a material with a plastic domain (for example metal) or a material fragile, that is to say having virtually no plastic field (eg silicon, silicon carbide, silicon nitride, etc.).
  • the post is driven into the body and / or the fork.
  • the tenon is stuck in the body and / or the fork.
  • the invention makes it possible to reduce manufacturing costs and increase production yields. It is indeed problematic to remove the current tenons in these dimensions and to control the assembly of the post, plank and dart / horns.
  • An important advantage of the use of a tenon made of a material having no plastic domain under stress for the assembly of the fork to the main body of the anchor is that it holds the deformation during assembly , it allows to be cut and ground with front faces forming perfectly flat reference faces parallel to each other and precise dimensions. This results in particular excellent control of the spacing between the fork and the main body during the assembly operation between these two parts.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Micromachines (AREA)
EP14171389.1A 2014-06-05 2014-06-05 Anker für Hemmungsmechanismus eines Uhrwerks Active EP2952971B1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP14171389.1A EP2952971B1 (de) 2014-06-05 2014-06-05 Anker für Hemmungsmechanismus eines Uhrwerks
US14/721,062 US9575465B2 (en) 2014-06-05 2015-05-26 Pallet lever for the escapement mechanism of a watch movement
JP2015111102A JP6209181B2 (ja) 2014-06-05 2015-06-01 時計ムーブメントの脱進機構のためのアンクル
CN201510300339.8A CN105319938B (zh) 2014-06-05 2015-06-03 用于手表机芯的擒纵机构的擒纵叉
HK16109415.0A HK1221997A1 (zh) 2014-06-05 2016-08-08 用於手錶機芯的擒縱機構的縱叉

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14171389.1A EP2952971B1 (de) 2014-06-05 2014-06-05 Anker für Hemmungsmechanismus eines Uhrwerks

Publications (2)

Publication Number Publication Date
EP2952971A1 true EP2952971A1 (de) 2015-12-09
EP2952971B1 EP2952971B1 (de) 2016-10-12

Family

ID=50846885

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14171389.1A Active EP2952971B1 (de) 2014-06-05 2014-06-05 Anker für Hemmungsmechanismus eines Uhrwerks

Country Status (5)

Country Link
US (1) US9575465B2 (de)
EP (1) EP2952971B1 (de)
JP (1) JP6209181B2 (de)
CN (1) CN105319938B (de)
HK (1) HK1221997A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109814364A (zh) * 2017-11-22 2019-05-28 尼瓦罗克斯-法尔股份公司 用于钟表机芯的擒纵机构的擒纵叉

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017102661A1 (fr) * 2015-12-18 2017-06-22 Rolex Sa Procede de fabrication d'un composant horloger
EP3208664B1 (de) * 2016-02-19 2023-08-16 Omega SA Uhrwerk oder uhr ohne magnetische signatur
EP3557334A1 (de) * 2018-04-17 2019-10-23 Dominique Renaud SA Uhrhemmungsmechanismus mit ruheanker, und uhr, die mit einem solchen hemmungsmechanismus ausgestattet ist
JP7143675B2 (ja) * 2018-08-14 2022-09-29 セイコーエプソン株式会社 時計用部品、ムーブメントおよび時計
EP3671368B1 (de) * 2018-12-20 2022-11-23 The Swatch Group Research and Development Ltd Lager, insbesondere zur stossdämpfung, und drehteil eines uhrwerks
EP3783445B1 (de) 2019-08-22 2023-06-14 ETA SA Manufacture Horlogère Suisse Einstellmechanismus einer uhr mit hohem qualitätsfaktor und minimaler schmierung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH317532A (fr) * 1954-10-26 1956-11-30 Rolex Montres Ancre d'échappement à ancre et procédé pour sa fabrication
EP2320280A1 (de) 2009-11-06 2011-05-11 Nivarox-FAR S.A. Anker für Hemmungssystem eines Uhrwerks
CH703794B1 (fr) * 2006-04-12 2012-03-30 Seiko Instr Inc Ancre à palettes pour appareil horaire, appareil horaire mécanique comportant une telle ancre à palettes et procédé de fabrication.
EP2557460A1 (de) * 2011-08-12 2013-02-13 Nivarox-FAR S.A. Metallanker mit Polymer-Hörnern

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
US2674890A (en) * 1948-07-22 1954-04-13 Mosset William Pin-pallet escapement
US2971324A (en) * 1957-03-16 1961-02-14 Ebauches Sa Lever escapement for timepieces
EP2336832B1 (de) * 2009-12-21 2020-12-02 Rolex Sa Schweizer Ankerhemmung
EP2400352A1 (de) * 2010-06-22 2011-12-28 The Swatch Group Research and Development Ltd. Hemmungssystem einer Uhr
CH704016B1 (fr) * 2010-10-15 2019-01-31 Eta Sa Mft Horlogere Suisse Assemblage d'une pièce ne comportant pas de domaine plastique.
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
EP2469353A1 (de) * 2010-12-22 2012-06-27 ETA SA Manufacture Horlogère Suisse Zusammenbau eines Teils, das keinen Plastikbereich enthält
CH704256A2 (fr) * 2010-12-22 2012-06-29 Eta Sa Mft Horlogere Suisse Assemblage d'une pièce ne comportant pas de domaine plastique.
EP2743782B1 (de) * 2012-12-11 2016-02-03 Nivarox-FAR S.A. Vorrichtung zum zusammenbau von elastischen armen durch verformung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH317532A (fr) * 1954-10-26 1956-11-30 Rolex Montres Ancre d'échappement à ancre et procédé pour sa fabrication
CH703794B1 (fr) * 2006-04-12 2012-03-30 Seiko Instr Inc Ancre à palettes pour appareil horaire, appareil horaire mécanique comportant une telle ancre à palettes et procédé de fabrication.
EP2320280A1 (de) 2009-11-06 2011-05-11 Nivarox-FAR S.A. Anker für Hemmungssystem eines Uhrwerks
EP2557460A1 (de) * 2011-08-12 2013-02-13 Nivarox-FAR S.A. Metallanker mit Polymer-Hörnern

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Théorie de l'Horlogerie", pages: 99 - 128

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109814364A (zh) * 2017-11-22 2019-05-28 尼瓦罗克斯-法尔股份公司 用于钟表机芯的擒纵机构的擒纵叉
EP3489763A1 (de) 2017-11-22 2019-05-29 Nivarox-FAR S.A. Anker für die bewegungshemmung eines uhrwerks
US11073795B2 (en) 2017-11-22 2021-07-27 Nivarox-Far S.A. Pallets for the escapement of a clock movement

Also Published As

Publication number Publication date
US9575465B2 (en) 2017-02-21
HK1221997A1 (zh) 2017-06-16
EP2952971B1 (de) 2016-10-12
US20150355598A1 (en) 2015-12-10
CN105319938A (zh) 2016-02-10
CN105319938B (zh) 2018-02-13
JP2015230309A (ja) 2015-12-21
JP6209181B2 (ja) 2017-10-04

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