EP3309625B1 - Spirale zur befestigung mit einer federscheibe - Google Patents

Spirale zur befestigung mit einer federscheibe Download PDF

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Publication number
EP3309625B1
EP3309625B1 EP16193768.5A EP16193768A EP3309625B1 EP 3309625 B1 EP3309625 B1 EP 3309625B1 EP 16193768 A EP16193768 A EP 16193768A EP 3309625 B1 EP3309625 B1 EP 3309625B1
Authority
EP
European Patent Office
Prior art keywords
spring
balance
strip
zones
areas
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.)
Active
Application number
EP16193768.5A
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English (en)
French (fr)
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EP3309625A1 (de
Inventor
Ivan Hernandez
Pierre Cusin
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 EP16193768.5A priority Critical patent/EP3309625B1/de
Priority to RU2017134919A priority patent/RU2760638C2/ru
Priority to US15/725,392 priority patent/US10444707B2/en
Priority to JP2017195774A priority patent/JP6606535B2/ja
Priority to CN201710952282.9A priority patent/CN107942639B/zh
Publication of EP3309625A1 publication Critical patent/EP3309625A1/de
Priority to HK18113081.3A priority patent/HK1253932A1/zh
Application granted granted Critical
Publication of EP3309625B1 publication Critical patent/EP3309625B1/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
    • 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
    • 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
    • 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
    • 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

Definitions

  • the invention relates to a hairspring intended to be elastically fixed by a washer. More precisely, the invention relates to a ferrule suitable for fixing a hairspring on a shaft using the elastic clamping of a washer.
  • Requirement EP 2 916 177 in the name of the Applicant discloses such a ferrule without recourse to gluing or welding.
  • Said ferrule advantageously makes it possible to avoid the displacement of the attachment point when it is received on the shaft, to position the center of gravity on the geometric center of the strip but also to limit material breakage caused by the pinching of the strip. washer on the surface of the ferrule.
  • the aim of the present invention is to alleviate all or part of the drawbacks mentioned above by providing a ferrule which retains the advantages of the application.
  • EP 2 916 177 while generating less contact and bending stresses in the strip and, in particular, at the contact points and the vertices of said polygon.
  • the invention relates to a hairspring comprising a hairspring formed by a leaf wound on itself in several turns and a ferrule comprising a strip extending substantially in the form of a triangle, the strip comprising, at each of the vertices of said triangle, a bulge extending radially towards the internal turn of the spiral spring, the point of attachment between the spiral spring and the ferrule being situated on one of the bulges of said triangle which is symmetrical by relative to the shaft passing through the center of the ferrule and said attachment point characterized in that the strip, between each of the vertices of said triangle, is formed of first and second zones of substantially constant widths and of a third zone, between the first and second zones, which comprises a width thickened with respect to those of the first and second zones and which is arranged to fit on a shaft making it possible to move the elastic deformation forces at the level of the first and second two zones.
  • the contact stresses could be reduced by 70% and, the bending stresses, by 40%. compared to those of the ferrule of Figure 9 of the application EP 2 916 177 . It is thus understood that the internal stresses are much lower within the shell. In addition, during adaptation, it was possible to better balance the contact stresses while maintaining a minimum tightening torque on the shaft.
  • the invention relates to a resonator for a timepiece characterized in that it comprises a shaft on which is fitted a balance and a spring according to one of the preceding variants.
  • the invention relates to a hairspring intended to be elastically fixed by a washer. More precisely, the invention relates to a ferrule suitable for fixing a hairspring on a shaft using the elastic clamping of a washer.
  • This assembly system is described in the requests EP 2 860 591 and EP 2,860,592 on behalf of the Applicant incorporated by reference into the present description.
  • This assembly system offers great freedom as to the materials used. It is thus notably applicable for a part whose material does not include a usable plastic range, that is to say with a very restricted plastic range, with a member comprising another type of material.
  • the resonator 101 for a timepiece comprises a shaft 103 on which is fitted a balance 105 and a hairspring 107 which can advantageously be a hairspring 1, 21, 41 described in the present application.
  • the spiral ring 107 is resiliently fitted to the shaft 103 between a washer 109 and a bearing surface 111 of the shaft 103.
  • the washer 109 tightens, mainly at its peripheral part, the shell of the balance spring 107 by elastic clamping.
  • the ferrule shown in Figure 9 of the application EP 2 916 177 comprises a strip 67, extending in the form of a triangle, suitable for this type of assembly described in the applications EP 2 860 591 and EP 2,860,592 .
  • the strip 67, between each of the vertices of said triangle has a non-constant width. More precisely, the strip 67, between each of the vertices of said triangle, passes by a maximum width at the level of the tightening points, decreasing as the vertices approach on two of the arms and a third arm with a fourth bulge making it possible to position the center of gravity on the geometric center of the strip.
  • the ferrule 65 of the application EP 2 916 177 is subject to large variations in constraints along its band 67 for a clamping of 6 ⁇ m in diameter. Indeed, the contact stresses at the points of contact with the shaft are between 300 and 450 MPa and the bending stresses between 500 and 600 MPa at the vertices of the triangle while they are almost zero between said points contact point and said vertices. While these maximum values are not penalizing in absolute terms for most of the materials used in watchmaking, the ferrule is nevertheless subjected to large variations in stress along its band. This is why the present application proposes to limit the stress variations along the strip, and particularly at the contact points.
  • the hairspring 1, 21, 41 thus comprises a spiral spring 3 comprising a leaf wound on itself in several turns and a ferrule 5, 25, 45 comprising a strip 7, 27, 47 extending substantially in the form of a triangle.
  • the strip 7, 27, 47 comprises, at each of the vertices of said triangle, a bulge 2, 4, 8, 22, 24, 28, 42, 44, 48 extending radially towards the internal turn S I of the spiral spring 3
  • the point of attachment between the spiral spring 3 and the ferrule 5, 25, 45 is located on one of the bulges 2, 22, 42 of said triangle which is symmetrical with respect to the axis passing through the center C of the ferrule and said attachment point, the center C being able to be defined as the center of the circle inscribed in the opening of the ferrule 5, 25, 45.
  • the strip 7, 27, 47 between each of the vertices of said triangle, is formed of first and second zones Z 1x , Z 2x of substantially constant width and of a third zone Z 3x , Z 4x , Z 5x , between the first and second zones Z 1x , Z 2x , which has a width which is thickened compared to those of the first and second zones Z 1x , Z 2x and which is arranged to fit on a shaft A making it possible to move the elastic deformation forces at the level of the first and second zones Z 1x , Z 2x of the strip 7, 27, 47.
  • first and second zones Z 1x , Z 2x were maintained, preferably with lengths L 13 , L 23 , L 1x , L 2x , heights and widths W 13 , W 23 , W 1x , W 2x identical.
  • a length of the third zone Z 3x , Z 4x , Z 5x comprised between 20% and 50% of the total length of the three zones Z 1x , Z 2 x, Z 3 x, Z 4x , Z 5x , and a width of the third zone Z 3x , Z 4x , Z 5x representing between 140% and 300% of the width W 1x , W 2x of the first and second zones Z 1x , Z 2x makes it possible to maintain the above advantages.
  • the balance spring 41 comprises a ferrule 45 with a band 47 which comprises three thickened third zones Z 51 , Z 52 , Z 53 which each extend radially towards the center C of the ferrule 45. It can be observed that each third zone Z 51 , Z 52 , Z 53 offers a substantially flat surface for the point of contact P 1 , P 2 , P 3 with the shaft A.
  • the first and second zones Z 1x , Z 2x of each arm of the strip 47 form right prisms of rectangular cross section which are all identical in order to offer an identical elastic character to each other.
  • a length of the third zone Z 51 , Z 52 , Z 53 substantially equal to 20% of the total length of the three zones Z 1x , Z 2X , Z 5x
  • a width of the third zone Z 51 , Z 52 , Z 53 substantially equal 143% of the width W 1x , W 2x of the first and second zones Z 1x , Z 2x are applied in the first embodiment of the figure 5 .
  • the third zone Z 51 , Z 52 , Z 53 decreases its width by following a radius, that is to say gradually.
  • a fourth bulge 46 extending radially towards the internal coil is present at the level of the third zone Z 52 of the arm opposite the bulge 42 in order to position the center of gravity of the ferrule 45 at the center C of the ferrule 45.
  • the hairspring 21 comprises a ferrule 25 with a band 27 which comprises three thickened third zones Z 41 , Z 42 , Z 43 which each extend radially towards the internal coil of the spiral spring. It can be observed that each third zone Z 41 , Z 42 , Z 43 offers, for the point of contact P 1 , P 2 , P 3 with the shaft A, a substantially planar surface extending from the first and second zones Z 1x , Z 2x adjacent.
  • the first and second zones Z 1x , Z 2x of each arm of the strip 27 form right prisms of rectangular cross section which are all identical in order to offer an identical elastic character between them.
  • a length of the third zone Z 41 , Z 42 , Z 43 substantially equal to 42% of the total length of the three zones Z 1x , Z 2X , Z 4x , and a width of the third zone Z 41 , Z 42 , Z 43 substantially equal 267% of the width W 1x , W 2x of the first and second zones Z 1x , Z 2x are applied in the second embodiment of the figure 4 .
  • the third zone Z 41 , Z 42 , Z 43 decreases its width by following a radius, that is to say gradually.
  • a fourth bulge 26 extending radially towards the internal turn is present as an extension of the third zone Z 42 of the arm opposite the bulge 22 in order to position the center of gravity of the shell 25 at the center C of the ferrule 25.
  • the fourth bulge 26 of the second embodiment is larger than that 46 of the first embodiment.
  • the hairspring 1 comprises a ferrule 5 with a band 7 which comprises three thickened third zones Z 31 , Z 32 , Z 33 which each extend radially towards the center C of the ferrule 5 and towards the internal coil S I of the spring. balance spring 3.
  • the third embodiment can therefore be considered as a mixture between the first and second embodiments.
  • every third zone Z 31 , Z 32 , Z 33 offers a substantially concave surface for the point of contact P 1 , P 2 , P 3 with the shaft A.
  • the first and second zones Z 1x , Z 2x of each arm of the strip 7 form right prisms of rectangular cross section which are all identical in order to offer an identical elastic character between them.
  • a length of the third zone Z 31 , Z 32 , Z 33 substantially equal to 38% of the total length of the three zones Z 1x , Z 2X , Z 3x , and a width of the third zone Z 31 , Z 32 , Z 33 substantially equal to 167% of the width W 1x , W 2x of the first and second zones Z 1x , Z 2x are applied in the third embodiment of the figures 2 and 3 . More precisely, an extra thickness of 50% is applied radially towards the center C of the shell 5 and of 117% towards the internal turn S I of the spiral spring 3.
  • the third zone Z 31 , Z 32 , Z 33 decreases its width by following two distinct radii, this is that is to say gradually on the inner and outer faces of each arm.
  • a fourth bulge 6 extending radially towards the internal turn S I is present as an extension of the third zone Z 32 of the arm opposite the bulge 2 in order to position the center of gravity of the shell 5 at the center C of the shell 5.
  • the present invention is not limited to the example illustrated but is susceptible of various variants and modifications which will appear to those skilled in the art.
  • the three embodiments can be combined with one another without departing from the scope of the invention.
  • the surfaces at the point of contact P 1 , P 2 , P 3 with the shaft A could be inverted between the first and third embodiments. It is therefore understood that the surfaces at the level of the point of contact P 1 , P 2 , P 3 can be plane, convex or concave without departing from the scope of the invention.
  • ferrule 5, 25, 45 according to the invention cannot be limited to a strip 7, 27, 47 in the form of a triangle.
  • the invention can be applied to another type of polygon.
  • the hairspring 1, 21, 41 can also be formed using several materials.
  • the base material such as for example based on silicon, could receive a total or partial coating composed of a thermal compensation layer and / or a resistant layer impermeable to humidity in order to to make the hairspring 1, 21, 41 less sensitive to climatic variations.
  • the hairspring 1, 21, 41 may also include an internal turn S I following a curve of the Grossmann type and a partially thickened external coil.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Springs (AREA)
  • Toys (AREA)

Claims (8)

  1. Spirale (1, 21, 41) mit einer Spiralfeder (3), gebildet aus einem in mehreren Windungen um sich selbst gewickelten Blatt und aus einer Spiralrolle (5, 25, 45) mit einem Band (7, 27, 47), das sich im Wesentlichen in Form eines Dreiecks erstreckt, wobei das Band (7, 27, 47) an jeder Ecke des Dreiecks eine Ausbauchung (2, 4, 8, 22, 24, 28, 42, 44, 48) aufweist, die sich radial zur inneren Windung (SI) der Spiralfeder (3) erstreckt, wobei sich der Befestigungspunkt zwischen der Spiralfeder (3) und der Spiralrolle (5, 25, 45) an einer der Ausbauchungen (2, 4, 8, 22, 24, 28, 42, 44, 48) des Dreiecks befindet, das symmetrisch ist in Bezug auf die Welle (A, 103), die durch die Mitte (C) der Spiralrolle (5, 25, 45) und den Befestigungspunkt verläuft, wobei das Band (7, 27, 47) zwischen jeder der Ecken des Dreiecks aus einer ersten und einer zweiten Zone (Z1x, Z2x), die sich im Wesentlichen über konstante Breiten (W1x, W2x) erstrecken, und einer dritten Zone (Z3x, Z4x, Z5x) zwischen der ersten Zone und der zweiten Zone (Z1x, Z2x) gebildet ist, die im Verhältnis zu den Breiten (W1x, W2x) der ersten und der zweiten Zone (Z1x, Z2x) verdickt ist und die so angeordnet ist, dass sie auf eine Welle (A, 103) passt, was ein Verschieben der elastischen Verformungskräfte an der ersten und der zweiten Zone (Z1x, Z2x) ermöglicht, dadurch gekennzeichnet, dass die Länge der dritten Zone (Z3x, Z4x, Z5x) 20 % bis 50 % der Gesamtlänge der drei Zonen (Z1x, Z2x, Z3x, Z4x, Z5x) ausmacht.
  2. Spirale (1, 21, 41) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die erste und die zweite Zone (Z1x, Z2x) gleiche Breiten (W1x, W2x) aufweisen.
  3. Spirale (1, 21, 41) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Breite der dritten Zone (Z3x, Z4x, Z5x) zwischen 140 % und 300 % der Breite (W1x, W2x) der ersten und der zweiten Zone (Z1x, Z2x) beträgt.
  4. Spirale (1, 21, 41) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die dritte Zone (Z3x, Z4x, Z5x) eine Verdickung in radialer Richtung zur Mitte (C) der Spiralrolle (5, 25, 45) aufweist.
  5. Spirale (1, 21, 41) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die dritte Zone (Z3x, Z4x, Z5x) eine Verdickung in radialer Richtung zur inneren Windung (SI) der Spiralfeder (3) aufweist.
  6. Spirale (1, 21, 41) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die dritte Zone (Z3x, Z4x, Z5x) eine Verdickung in radialer Richtung zur Mitte (C) der Spiralrolle (5, 25, 45) und zur inneren Windung (SI) der Spiralfeder (3) aufweist.
  7. Spirale (1, 21, 41) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Spirale auf Siliciumbasis gebildet ist.
  8. Resonator (101) für eine Uhr, dadurch gekennzeichnet, dass er eine Welle (A, 103) umfasst, auf die eine Unruh (105) und eine Spirale (1, 21, 41) nach einem der vorhergehenden Ansprüche ausgerichtet sind.
EP16193768.5A 2016-10-13 2016-10-13 Spirale zur befestigung mit einer federscheibe Active EP3309625B1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP16193768.5A EP3309625B1 (de) 2016-10-13 2016-10-13 Spirale zur befestigung mit einer federscheibe
RU2017134919A RU2760638C2 (ru) 2016-10-13 2017-10-04 Балансная пружина, закрепляемая упругой шайбой
US15/725,392 US10444707B2 (en) 2016-10-13 2017-10-05 Balance-spring intended to be secured by a resilient washer
JP2017195774A JP6606535B2 (ja) 2016-10-13 2017-10-06 弾性ワッシャによる固定用のひげぜんまい
CN201710952282.9A CN107942639B (zh) 2016-10-13 2017-10-13 用于通过弹性垫圈固定的游丝
HK18113081.3A HK1253932A1 (zh) 2016-10-13 2018-10-12 用於通過彈性墊圈固定的游絲

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16193768.5A EP3309625B1 (de) 2016-10-13 2016-10-13 Spirale zur befestigung mit einer federscheibe

Publications (2)

Publication Number Publication Date
EP3309625A1 EP3309625A1 (de) 2018-04-18
EP3309625B1 true EP3309625B1 (de) 2020-07-29

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EP16193768.5A Active EP3309625B1 (de) 2016-10-13 2016-10-13 Spirale zur befestigung mit einer federscheibe

Country Status (6)

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US (1) US10444707B2 (de)
EP (1) EP3309625B1 (de)
JP (1) JP6606535B2 (de)
CN (1) CN107942639B (de)
HK (1) HK1253932A1 (de)
RU (1) RU2760638C2 (de)

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EP3627236A1 (de) * 2018-09-21 2020-03-25 Nivarox-FAR S.A. Elastisches halterungsorgan für die befestigung einer uhrenkomponente auf einem halteelement
EP3627238A1 (de) * 2018-09-21 2020-03-25 Nivarox-FAR S.A. Elastisches halterungsorgan für die befestigung einer uhrenkomponente auf einem halteelement
EP3627235A1 (de) * 2018-09-21 2020-03-25 Nivarox-FAR S.A. Elastisches halterungsorgan für die befestigung einer uhrenkomponente auf einem halteelement
EP3671364A1 (de) * 2018-12-17 2020-06-24 Nivarox-FAR S.A. Elastisches halterungsorgan für die befestigung einer uhrenkomponente auf einem halteelement
EP3722889A1 (de) * 2019-04-08 2020-10-14 Nivarox-FAR S.A. Elastisches halterungsorgan für die befestigung einer uhrkomponente auf verschiedenen halteelementen

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ATE421720T1 (de) * 2004-04-06 2009-02-15 Nivarox Sa Spiralrolle ohne deformation des fixierungsradius der spiralfeder und herstellungsverfahren derartige spiralrolle
EP1637940B1 (de) * 2004-08-31 2011-07-20 Patek Philippe SA Genève Spiralrolle für Uhren
EP1857891A1 (de) * 2006-05-17 2007-11-21 Patek Philippe Sa Spiralfeder-Spiralrollegesamtheit für ein Uhrwerk
EP1868045B1 (de) * 2006-06-12 2019-02-20 Patek Philippe SA Genève Spiralrolle für Uhr
EP2184653A1 (de) * 2008-11-06 2010-05-12 Montres Breguet S.A. Spiralfeder mit Endkurvenerhöhung aus mikro-bearbeitbarem Material
EP2761380B1 (de) * 2011-09-29 2023-05-31 Rolex S.A. Einteilige anordnung aus einer spiralfeder und spannzange
HK1186057A2 (en) * 2013-01-14 2014-03-07 Master Dynamic Ltd Stress-relief elastic structure of hairspring collet
KR102255403B1 (ko) * 2013-07-21 2021-05-25 삼성메디슨 주식회사 결합된 광음향 및 초음파 진단 장치 및 방법
HK1193537A2 (en) * 2013-07-29 2014-09-19 Master Dynamic Ltd Silicon overcoil balance spring
EP2860591A1 (de) 2013-10-09 2015-04-15 Nivarox-FAR S.A. Montagesystem, bei dem ein konisches elastisches Blockierelement verwendet wird
EP2860592B1 (de) 2013-10-09 2023-07-05 Nivarox-FAR S.A. Montagesystem, bei dem ein flaches elastisches blockierelement verwendet wird
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EP3098669A1 (de) * 2014-03-05 2016-11-30 Nivarox-FAR S.A. Spirale, die mit einer federscheibe gesichert werden muss
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Also Published As

Publication number Publication date
EP3309625A1 (de) 2018-04-18
JP6606535B2 (ja) 2019-11-13
RU2017134919A3 (de) 2020-12-17
RU2760638C2 (ru) 2021-11-29
CN107942639B (zh) 2020-10-16
CN107942639A (zh) 2018-04-20
US20180107162A1 (en) 2018-04-19
JP2018063250A (ja) 2018-04-19
US10444707B2 (en) 2019-10-15
HK1253932A1 (zh) 2019-07-05
RU2017134919A (ru) 2019-04-04

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