EP2175328B1 - Uhrwerk umfassend einen flachen Spiralfeder - Google Patents

Uhrwerk umfassend einen flachen Spiralfeder Download PDF

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Publication number
EP2175328B1
EP2175328B1 EP10151818.1A EP10151818A EP2175328B1 EP 2175328 B1 EP2175328 B1 EP 2175328B1 EP 10151818 A EP10151818 A EP 10151818A EP 2175328 B1 EP2175328 B1 EP 2175328B1
Authority
EP
European Patent Office
Prior art keywords
spiral
curve
balance
spring
hairspring
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.)
Expired - Lifetime
Application number
EP10151818.1A
Other languages
English (en)
French (fr)
Other versions
EP2175328A3 (de
EP2175328A2 (de
Inventor
Thierry Conus
Kaspar Trümpy
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.)
ETA SA Manufacture Horlogere Suisse
Original Assignee
ETA SA Manufacture Horlogere Suisse
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 ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to EP10151818.1A priority Critical patent/EP2175328B1/de
Publication of EP2175328A2 publication Critical patent/EP2175328A2/de
Publication of EP2175328A3 publication Critical patent/EP2175328A3/de
Application granted granted Critical
Publication of EP2175328B1 publication Critical patent/EP2175328B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G04B17/32—Component parts or constructional details, e.g. collet, stud, virole or piton
    • G04B17/34—Component parts or constructional details, e.g. collet, stud, virole or piton for fastening the hairspring onto the balance
    • 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
    • G04B17/04—Oscillators acting by spring tension
    • G04B17/06—Oscillators with hairsprings, e.g. balance
    • G04B17/066—Manufacture of the spiral spring
    • 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
    • G04B17/32—Component parts or constructional details, e.g. collet, stud, virole or piton
    • G04B17/34—Component parts or constructional details, e.g. collet, stud, virole or piton for fastening the hairspring onto the balance
    • G04B17/345—Details of the spiral roll
    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
    • G04D3/0002—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe
    • G04D3/0035—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the regulating mechanism
    • G04D3/0041—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the regulating mechanism for coil-springs
    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
    • G04D3/0069—Watchmakers' or watch-repairers' machines or tools for working materials for working with non-mechanical means, e.g. chemical, electrochemical, metallising, vapourising; with electron beams, laser beams

Definitions

  • the present invention relates to a spiral spring-balance spiral spring obtained by a manufacturing method for improving the isochronism by acting on the one hand on the construction parameters of the spiral as such, on the other hand on a method of attachment on the balance shaft to reduce the geometric difference inherent in the usual fastening modes between the point of origin of the Archimedes spiral and the axis of rotation of the balance.
  • isochronism is understood to mean the gait variations as a function of the oscillation amplitude variations of the balance wheel, as well as the gait deviations between the horizontal position and the vertical positions of the watch.
  • a spiral having turns of uniform section and pitch, allows, by a particular conformation of the curve inside and the curve outside in the plane of the spiral or, more often, in different planes. , to obtain a concentric development of the hairspring and to have a displacement of the center of mass of the hairspring and a variation of the spiral inertia during the development, minimizing the gait disturbances as a function of the amplitude and the positions of the hairspring compared to the gravity vector.
  • height congestion is a drawback for its use in wristwatches should have, for obvious reasons of aesthetics, as small a thickness as possible.
  • a flat hairspring such as that represented in FIG. figure 1 .
  • Such a hairspring is manufactured in known manner by strapping from a wire or a metal strip of constant section over its entire length, and has at rest a constant pitch between the turns.
  • the curve inside is fixed, for example by laser welding, on a shell 20, driven on the axis 9 of a balance 8.
  • CH327796 discloses a watch movement according to the preamble of claim 1 a flat hairspring and methods of manufacturing by micromachining or galvanic growth, to conveniently choose the most favorable construction parameters to improve the isochronism by the shape of the hairspring as well as by the fixing means.
  • the invention relates to a watch movement as defined in claim 1.
  • the method of manufacturing the spiral uses micro-techniques, such as photolithography and electrodeposition of a metal or an alloy, or the micromachining of a machine.
  • wafer thickness "h" made of an amorphous or crystalline material such as silicon in monocrystalline or polycrystalline form.
  • the spiral has a turn portion deviating from the curve of a perfect spiral, having a Grossmann type curve inside.
  • the manufacturing process basically consists of applying the LIGA technique to form a mold corresponding to the profile desired by the spiral. Given the properties of photoresists currently available on the market, it is possible to adjust the thickness of the photoresist layer to obtain the full range of spirals with blade heights of up to a few tenths of a millimeter.
  • the method basically consists in etching a wafer of said material through masks.
  • the figure 1 represents a sprung balance of the prior art mentioned in the preamble. Its characteristics will serve as a reference to show the significant progress made by the invention at the level of isochronism.
  • the hairspring 10 has the end of its curve in the center 11 fixed in a conventional manner on a shell 20 driven on the axis 9 of the balance 8 pivoted between the plate 7 and the cock 6.
  • the regulating device further comprises, in a known manner, a stud carrier 5 for fixing the curve to the outside 14 of the hairspring 10 and possibly a racket 4 provided with pins 3 and a racket tail 2 opposite a graduation 1.
  • said hairspring is formed of 14 turns having a uniform rectangular cross-section, for example 0.05 x 0.30 mm from the curve at the center 11 to the curve at the outside 14, and that the turns have between them a constant pitch p .
  • the point of attachment of the curve to the center 11 is situated at a distance r from the center of pivoting of the spiral, and that of the curve to the outside 14, at a distance R, before the bend 16.
  • r and R are respectively 0.57 mm and 2.46 mm.
  • the Figures 8 and 9 correspond to an embodiment in which the curve inside 11 is Grossmann type 13, that is to say having a geometry such as that described in the book "Theory General of Watchmaking” L. Defossez . Such a geometry is very delicate to obtain by deformation of a metal blade.
  • the manufacturing method according to the invention makes it possible to very easily obtain such a configuration without the intervention of highly qualified personnel.
  • the diagram shown in figure 9 shows that the maximum deviation at 300 ° is only 2.1 s / d.
  • the method basically consists in spreading on a substrate previously coated with a sacrificial layer a positive or negative photoresist on a thickness corresponding to the desired "h" height of the blade and forming by means of a mask by photolithography and etching a hollow structure corresponding to the desired contour for the hairspring.
  • said hollow structure is filled with a metal or a metal alloy either by electrodeposition as indicated for example in the patent US 4,661,212 or by compression and sintering nanoparticles, as indicated for example in the patent application US 2001/0038803 .
  • the hairspring is released from the substrate by elimination of the sacrificial layer.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Springs (AREA)
  • Micromachines (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Vehicle Body Suspensions (AREA)
  • Nonmetallic Welding Materials (AREA)
  • Pivots And Pivotal Connections (AREA)

Claims (3)

  1. Uhrwerk, mit einem Spiralunruh-Resonator, dessen Spirale an einer Welle (9) der Unruh (8) montiert ist, die zwischen einer Platine (7) und einem Hahn (6) schwenkt, wobei die Spirale (10) aus einem Plättchen gebildet ist, das aus einer Folge von Windungen zusammengesetzt ist, die zwischen sich einen Abstand "p" haben, wobei das innere Ende (11) der Krümmung fest mit der Welle (9) der Unruh (8) ausgebildet ist und das äußere Ende (14) der Krümmung am Hahn (6) oder an einem daran befestigten Teil befestigt ist, wobei die Windungen von der inneren Krümmung (11) bis zur äußeren Krümmung (14) aus einem einzigen Band gebildet sind, wobei das Band einen rechtwinkligen "s" Abschnitt der Höhe h und der Dicke e aufweist, wobei ein Abschnitt der äußeren Krümmung (14) eine größere Sektion als diejenige der Klinge darstellt, die sämtliche anderen Windungen darstellt, und dadurch kennzeichnet, dass die innere Krümmung einen Verlauf des Grossmann-Typs hat.
  2. Uhrwerk nach vorhergehendem Anspruch, dadurch gekennzeichnet, dass die Spirale aus Silizium in monokristalliner oder polykristalliner Form gebildet ist.
  3. Uhrwerk nach Anspruch 1, dadurch gekennzeichnet, dass die Spirale aus einem Metallmaterial oder aus einer Metalllegierung gebildet ist.
EP10151818.1A 2003-02-06 2004-02-02 Uhrwerk umfassend einen flachen Spiralfeder Expired - Lifetime EP2175328B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10151818.1A EP2175328B1 (de) 2003-02-06 2004-02-02 Uhrwerk umfassend einen flachen Spiralfeder

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP03075362A EP1445670A1 (de) 2003-02-06 2003-02-06 Spiralfeder der Resonatorunruh und Fabrikationsmethode
EP04707219A EP1593004B1 (de) 2003-02-06 2004-02-02 Spiralfeder der resonatorunruh und fabrikationsmethode
EP10151818.1A EP2175328B1 (de) 2003-02-06 2004-02-02 Uhrwerk umfassend einen flachen Spiralfeder

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP04707219A Division EP1593004B1 (de) 2003-02-06 2004-02-02 Spiralfeder der resonatorunruh und fabrikationsmethode
EP04707219.4 Division 2004-02-02

Publications (3)

Publication Number Publication Date
EP2175328A2 EP2175328A2 (de) 2010-04-14
EP2175328A3 EP2175328A3 (de) 2011-03-30
EP2175328B1 true EP2175328B1 (de) 2014-07-30

Family

ID=32605375

Family Applications (4)

Application Number Title Priority Date Filing Date
EP03075362A Withdrawn EP1445670A1 (de) 2003-02-06 2003-02-06 Spiralfeder der Resonatorunruh und Fabrikationsmethode
EP10151818.1A Expired - Lifetime EP2175328B1 (de) 2003-02-06 2004-02-02 Uhrwerk umfassend einen flachen Spiralfeder
EP06003086A Expired - Lifetime EP1655642B1 (de) 2003-02-06 2004-02-02 Spiralfeder der Resonatorunruh
EP04707219A Expired - Lifetime EP1593004B1 (de) 2003-02-06 2004-02-02 Spiralfeder der resonatorunruh und fabrikationsmethode

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP03075362A Withdrawn EP1445670A1 (de) 2003-02-06 2003-02-06 Spiralfeder der Resonatorunruh und Fabrikationsmethode

Family Applications After (2)

Application Number Title Priority Date Filing Date
EP06003086A Expired - Lifetime EP1655642B1 (de) 2003-02-06 2004-02-02 Spiralfeder der Resonatorunruh
EP04707219A Expired - Lifetime EP1593004B1 (de) 2003-02-06 2004-02-02 Spiralfeder der resonatorunruh und fabrikationsmethode

Country Status (10)

Country Link
US (3) US20060055097A1 (de)
EP (4) EP1445670A1 (de)
JP (2) JP5122073B2 (de)
KR (1) KR20050098881A (de)
CN (1) CN100435044C (de)
AT (1) ATE486304T1 (de)
DE (2) DE602004029762D1 (de)
HK (1) HK1084737A1 (de)
TW (1) TW200426547A (de)
WO (1) WO2004070476A2 (de)

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CN100435044C (zh) 2008-11-19
JP2006516718A (ja) 2006-07-06
WO2004070476A3 (fr) 2004-12-23
EP1655642B1 (de) 2009-10-07
WO2004070476A2 (fr) 2004-08-19
EP1593004A2 (de) 2005-11-09
US20060055097A1 (en) 2006-03-16
JP2013015534A (ja) 2013-01-24
ATE486304T1 (de) 2010-11-15
HK1084737A1 (en) 2006-08-04
DE602004029762D1 (de) 2010-12-09
US20150277382A1 (en) 2015-10-01
EP2175328A3 (de) 2011-03-30
EP1593004B1 (de) 2010-10-27
TW200426547A (en) 2004-12-01
CN1745341A (zh) 2006-03-08
DE602004023518D1 (de) 2009-11-19
EP2175328A2 (de) 2010-04-14
JP5122073B2 (ja) 2013-01-16
US20190107809A1 (en) 2019-04-11
US10444706B2 (en) 2019-10-15
JP5389999B2 (ja) 2014-01-15
EP1655642A3 (de) 2006-09-27
EP1445670A1 (de) 2004-08-11
KR20050098881A (ko) 2005-10-12

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