EP2110719B1 - Stoßdämpfer für Schwungmasse - Google Patents

Stoßdämpfer für Schwungmasse Download PDF

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Publication number
EP2110719B1
EP2110719B1 EP08154521A EP08154521A EP2110719B1 EP 2110719 B1 EP2110719 B1 EP 2110719B1 EP 08154521 A EP08154521 A EP 08154521A EP 08154521 A EP08154521 A EP 08154521A EP 2110719 B1 EP2110719 B1 EP 2110719B1
Authority
EP
European Patent Office
Prior art keywords
weight
mass
movement
oscillating
plate
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
EP08154521A
Other languages
English (en)
French (fr)
Other versions
EP2110719A1 (de
Inventor
Raphaël Courvoisier
Alphonse Bron
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.)
Montres Jaquet Droz SA
Original Assignee
Montres Jaquet Droz 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 Montres Jaquet Droz SA filed Critical Montres Jaquet Droz SA
Priority to AT08154521T priority Critical patent/ATE544098T1/de
Priority to EP08154521A priority patent/EP2110719B1/de
Priority to SG200902468-8A priority patent/SG156580A1/en
Priority to CN2009102039664A priority patent/CN101566824B/zh
Priority to US12/424,421 priority patent/US7946756B2/en
Priority to JP2009098849A priority patent/JP5284852B2/ja
Publication of EP2110719A1 publication Critical patent/EP2110719A1/de
Priority to HK10104021.3A priority patent/HK1138384A1/xx
Application granted granted Critical
Publication of EP2110719B1 publication Critical patent/EP2110719B1/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
    • G04B5/00—Automatic winding up
    • G04B5/02—Automatic winding up by self-winding caused by the movement of the watch
    • G04B5/18—Supports, suspensions or guide arrangements, for oscillating weights
    • G04B5/19—Suspension of the oscillating weight at its centre of rotation
    • G04B5/195—Suspension of the oscillating weight at its centre of rotation the centre of rotation not being the centre of the clockwork
    • 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
    • G04B43/00—Protecting clockworks by shields or other means against external influences, e.g. magnetic fields
    • G04B43/002—Component shock protection arrangements

Definitions

  • the present invention relates to an oscillating mass intended for the automatic winding of a clockwork movement, the mass being pivotally off-center with respect to the center of the movement and being made of a single heavy material.
  • the reassembly is generally ensured by the rotation of an oscillating mass of a radius approximately equal to that of the movement and pivoting in the center and above the latter.
  • the oscillating mass normally consists of two distinct parts: the mass support and the heavy sector.
  • the mass support carries the heavy sector on its periphery and, in its center, is pivoted on a tree which constitutes the suspension of the whole oscillating mass.
  • This support is usually made of brass or nickel silver and is intentionally made flexible so as not to damage the suspension of the oscillating mass in case of shock.
  • the mass support acts as a shock absorber.
  • the heavy sector of a traditional large radius system is the outer part of the oscillating mass and is integral with the mass support to which it is fixed by screwing, riveting or crimping. It is made of fried alloy or precious metal of great density.
  • the elasticity of the mass support is sufficient to protect the system from impact.
  • the displacement of the oscillating mass is limited by the support of the heavy sector on the plate in one direction and the bottom of the box in the other direction.
  • the mass support, often decorated, is not likely to be scratched.
  • the present invention relates to an oscillating weight pivotally off center to the center of the movement, as described for example in the patent application CH 9.431 / 66 , the remedies described to counteract the harmful effects of shocks applied to the timepiece are not suitable, because the radius of the oscillating weight is greatly reduced compared to that of a traditional oscillating weight to form what can be called a micro-rotor.
  • This micro-rotor is integrated in the movement and therefore does not overhang it, which in most cases leads to a decrease in the thickness of the timepiece.
  • the micro-rotor Since the moment of inertia of an oscillating mass depends on its radius, its thickness and its material, the loss generated by the reduction of radius observed on the micro-rotor must be compensated by an increase in its thickness. As a result, the micro-rotor will have a large thickness and will be made of a single block of a single heavy material thus removing the elastic mass support which was discussed above. The system then no longer having the required elasticity, the suspension around which is articulated the micro-rotor undergoes the entire stress caused by a shock applied to the oscillating weight and may be damaged.
  • Part of the shock in question could be compensated by increasing the axial play of the rotor on its shaft, but then the face of the rotor lying opposite the bottom of the timepiece could come into contact with the bottom and be damaged as well as the decoration likely to be affixed to it.
  • the present invention relates to a watch movement defined by claim 1 of the patent.
  • the Figures 1 and 2 are simplified cuts showing a shock absorber. They show an oscillating mass 2 intended for the automatic winding of a clockwork movement 3 which is briefly sketched in figure 5 .
  • the mass 2 is pivotally off-center relative to the center of the movement, is integrated in this movement and is made of a single heavy material.
  • the mass 2 is supported by a shock absorber 1 which is in the form of a plate 4, one end of which is fixed to this plate (at the place marked by an X) and whose other end is fixed or is secured to a tube 5, the latter being arranged to rotate about a shaft 6 constituting the axis 7 of rotation of said mass.
  • the damper 1 which thus preserves the integrity of the shaft 6 around which the mass 2 rotates, the suspension of the mass no longer suffering the totality of the stress caused by this shock and no longer risking being damaged.
  • the left part of the figure 1 presents the oscillating mass 2 in its normal situation, that is to say when the timepiece is not affected by any shock.
  • the right part of the figure 1 presents the situation of the oscillating mass 2 when the timepiece is struck axially in the direction of the arrow A.
  • the mass 2 has collapsed by distance - h relative to its normal position, causing the plate 4 to flex and play its role of shock absorber 1 as shown in FIG. figure 1 .
  • the left part of the figure 2 presents the same oscillating mass 2 in normal situation, the timepiece being affected by no shock.
  • the right part of the figure 2 presents the situation of the mass 2 when the timepiece is struck axially and in the direction of the arrow B, opposite the direction of the arrow A.
  • the mass 2 has risen by a distance + h relative to in its normal position, causing the plate 4 to flex and play again its role of shock absorber 1 as shown in FIG. figure 2 .
  • the plate 4 serving as shock absorber 1 between the oscillating mass 2 and the plate 8 that includes the movement 3. It follows from this provision that the face 23 of the mass 2 which is opposite to that to which is fixed plate 4 is located directly on the bottom that presents the timepiece. This face 23 may be provided with a decoration that can be made visible if the background is a sapphire crystal for example. If the mass 2 is not provided with abutment means to limit axial fretting during impact, its decorated face may come into contact with the bottom and be damaged.
  • Figures 3 and 4 are simplified representations of a principle taken as an example.
  • the figure 3 is a plan view of this embodiment and the figure 4 a section on an enlarged scale along line IV - IV of the figure 3 .
  • the abutment means consist of a groove 15 formed in the oscillating mass 2.
  • this groove 15 penetrates with play a retaining tab 16 which can terminate a limiting bridge 17 as will be apparent on the figure 6 . Games will be calculated from so that the mass 2 never come to touch in case of shock neither the bottom, nor the turntable of the timepiece.
  • the figure 5 is a plan view and the figure 6 an enlarged section on line VI - VI of the figure 5 of a practical and particular embodiment of the present invention.
  • the figure 5 is a partial side view of the timepiece where we see the oscillating mass 2 integrated with the movement 3.
  • the face 23 of the mass 2 can be provided with a decoration and appear through a transparent background.
  • the figure 7 is an exploded perspective view of the mechanism of the present invention and makes it easier to understand the views and Figures 5 and 6 respectively.
  • the plate 4 acting as shock absorber 1 and defined above has the shape of a sector 9 substantially semicircular.
  • This sector 9 is fixed in its peripheral zone 10 to the oscillating mass 2 and in its central zone 11 to the tube 5.
  • the intermediate zone 12 situated between said peripheral and central zones has an elastic medium capable of flexing in the event of impacts on the oscillating weight 2.
  • One way of making the intermediate zone 12 of the sector 9 elastic is to provide voids which allow the arms connecting the central zone 11 to remain at the peripheral zone 10, as is well explained in the disclosure. CH 279 001 cited above. If the thickness of the sector 9 is sufficiently thin the arms will have the desired flexibility.
  • the figure 8 is a plan view of an embodiment of sector 9 presented in perspective on the figure 7 . It can be seen that the intermediate zone 12 comprises three elastic arms 18, 19 and 20 originating in the peripheral zone 10 and moving towards the central zone 11 which surrounds the axis of rotation 7 of the oscillating mass 2.
  • the figure 9 is a plan view of another embodiment of the sector 9 constituting the shock absorber of the present invention.
  • the intermediate zone 12 has only two elastic arms 13 and 14 connecting the peripheral 10 and central 11 zones of the sector 9.
  • the shaft 6 and its axis 7 around which rotates the oscillating mass 2 is integral with the plate 8 of the movement 3 sketched in figure 5 .
  • the mass 2 is supported by the semicircular sector 9.
  • the peripheral zone 10 of this sector 9 is fixed to the mass 2 by means of screws 21.
  • the central zone 11 of this same sector 9 is fixed to the tube 5 by means of 22.
  • the tube 5 rotates freely around the shaft 6.
  • a ball bearing 25 is disposed between the shaft 6 and the tube 5.
  • the ring 26 of the bearing 25 is driven inside the tube 5 and the part central 27 of the same bearing 25 is fitted on the shaft 6 and is held there axially between a shoulder 28 formed on the shaft 6 and a key 29.
  • the tube 5 drives a wheel 30 which is fixed to the tube 5 by the same screws 22 used to attach the sector 9 to the tube 5.
  • the figure 6 shows that the sector 9 is sandwiched between the tube 5 and the wheel 30.
  • the same figure still shows that the wheel 30 drives a first intermediate mobile 31 starting a chain leading to a ratchet to go up.
  • the shaft 32 of this first mobile is pivoted between the plate 8 and a bridge 17 which is extended by the tongue 16 limiting the axial frustum of the mass 2, this tongue being introduced into the throat 15 which was discussed above. .

Claims (4)

  1. Uhrwerk (3), das eine oszillierende Masse (2) umfasst, die für den automatischen Aufzug des Uhrwerks (3) vorgesehen ist, wobei die Masse angeordnet ist, um in Bezug auf das Zentrum des Werks exzentrisch geschwenkt zu werden, wobei die Masse einteilig aus schwerem Material hergestellt ist und durch einen Stoßdämpfer (1) unterstützt ist, der die Form einer biegsamen Platte (4) aufweist, wovon ein Ende an dieser Masse befestigt ist und ein anderes Ende an einem Rohr (5) befestigt ist, das dazu ausgelegt ist, um eine die Drehachse (7) der Masse bildende Welle (6) gedreht zu werden, dadurch gekennzeichnet, dass Anschlagmittel verwendet werden, um das axiale Spiel, das die Masse (2) im Fall eines Stoßes aufweist, zu begrenzen,
    wobei die Anschlagmittel aus einer in der Masse (2) ausgebildeten Kehle (15) bestehen, wobei in die Kehle mit Spiel eine Haltelasche (16) eindringt, die eine Begrenzungsbrücke (17) abschließt
  2. Uhrwerk nach Anspruch 1, dadurch gekennzeichnet, dass die Platte (4) zwischen der Masse (2) und der Platine (8), die das Werk trägt, angeordnet ist.
  3. Uhrwerk nach Anspruch 1, dadurch gekennzeichnet, dass die Platte (4) die Form eines im Wesentlichen halbkreisförmigen Sektors (9) aufweist, der in seiner Umfangszone (10) an der oszillierenden Masse (2) befestigt ist und in seiner Mittelzone (11) an dem Rohr (5) befestigt ist, wobei die Zwischenzone (12), die sich zwischen der Umfangszone und der Mittelzone befindet, ein elastisches Medium besitzt, das sich im Fall von Stößen, die die oszillierende Masse (2) aufnimmt, biegen kann.
  4. Uhrwerk nach Anspruch 3, dadurch gekennzeichnet, dass die Zwischenzone (12) wenigstens zwei elastische Arme (13, 14) aufweist, die zu der Drehachse (7) der oszillierenden Masse (2) gerichtet sind.
EP08154521A 2008-04-15 2008-04-15 Stoßdämpfer für Schwungmasse Active EP2110719B1 (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
AT08154521T ATE544098T1 (de) 2008-04-15 2008-04-15 STOßDÄMPFER FÜR SCHWUNGMASSE
EP08154521A EP2110719B1 (de) 2008-04-15 2008-04-15 Stoßdämpfer für Schwungmasse
SG200902468-8A SG156580A1 (en) 2008-04-15 2009-04-09 Shock absorber for the oscillating weight of a timepiece
US12/424,421 US7946756B2 (en) 2008-04-15 2009-04-15 Shock absorber for the oscillating weight of a timepiece
CN2009102039664A CN101566824B (zh) 2008-04-15 2009-04-15 用于时钟摆锤的减震器
JP2009098849A JP5284852B2 (ja) 2008-04-15 2009-04-15 時計の振動錘用耐震装置
HK10104021.3A HK1138384A1 (en) 2008-04-15 2010-04-23 Shock absorber for the oscillating weight of a timepiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08154521A EP2110719B1 (de) 2008-04-15 2008-04-15 Stoßdämpfer für Schwungmasse

Publications (2)

Publication Number Publication Date
EP2110719A1 EP2110719A1 (de) 2009-10-21
EP2110719B1 true EP2110719B1 (de) 2012-02-01

Family

ID=40139242

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08154521A Active EP2110719B1 (de) 2008-04-15 2008-04-15 Stoßdämpfer für Schwungmasse

Country Status (7)

Country Link
US (1) US7946756B2 (de)
EP (1) EP2110719B1 (de)
JP (1) JP5284852B2 (de)
CN (1) CN101566824B (de)
AT (1) ATE544098T1 (de)
HK (1) HK1138384A1 (de)
SG (1) SG156580A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2233988B1 (de) * 2009-03-23 2012-02-08 Montres Breguet SA Uhrwerk mit Tourbillon, das mit einer stoßfesten Schutzvorrichtung ausgestattet ist
CN104133362B (zh) * 2013-05-01 2021-05-18 劳力士有限公司 钟表振荡器的摆锤的减震体
EP3021173B1 (de) * 2014-11-14 2017-05-24 Blancpain S.A. Ringförmige Schwungmasse und Uhr, die eine solche Schwungmasse umfasst
CH712163A1 (fr) 2016-02-16 2017-08-31 Mps Micro Prec Systems Ag Roulement à billes et système d'accouplement comportant un tel roulement à billes.
JP1605098S (de) * 2016-11-29 2018-05-28
CH716153B1 (fr) * 2019-05-07 2022-12-30 Richemont Int Sa Masse oscillante pour pièce d'horlogerie.
USD1012749S1 (en) * 2022-03-10 2024-01-30 Richemont International Sa Micro rotor set for a watch dial

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH160803A (fr) * 1932-01-14 1933-03-31 Societe Anonyme Fabriqu Aegler Pièce d'horlogerie à remontage automatique.
US2399131A (en) * 1942-07-09 1946-04-23 Michel S A Grenchen A Automatic winding mechanism for timepieces
CH279001A (fr) 1949-08-10 1951-11-15 Rolex Montres Pièce d'horlogerie à remontage automatique par masse mobile.
DE1628890U (de) * 1950-10-16 1951-10-04 Helmut Junghans Und Gebrueder Selbsttaetige aufziehvorrichtung fuer armbanduhren.
FR1056443A (fr) * 1951-05-10 1954-02-26 Eterna Perfectionnement aux masses oscillantes pour montres à remontage automatique et procédé de fabrication de ces masses oscillantes perfectionnées
CH331275A (fr) 1956-11-19 1958-07-15 Omega Brandt & Freres Sa Louis Montre à remontage automatique par rotor
US3006138A (en) * 1958-06-04 1961-10-31 Rene A Fiechter Automatic self-winding watch
CH1034361A4 (de) * 1961-09-06 1963-05-31
CH478426A (fr) * 1966-07-11 1969-05-30 Tissot Horlogerie Pièce d'horlogerie à remontage automatique
US3846973A (en) * 1970-12-28 1974-11-12 Suwa Seikosha Kk Automatic winding watch with bridge plate offset to receive automatic winding mechanism
JPS5225771U (de) * 1975-08-13 1977-02-23
JPS53136876U (de) * 1977-04-05 1978-10-28
US5043956A (en) * 1989-06-26 1991-08-27 Seiko Instruments Inc. Wristwatch with oscillation alarm
JPH0391992U (de) * 1990-01-09 1991-09-19
CH692874A5 (fr) * 1997-11-20 2002-11-29 Ebauchesfabrik Eta Ag Instrument de petit volume muni d'un dispositif de limitation de la puissance mécanique fournie par une masse oscillante.
EP1085383B1 (de) * 1999-09-17 2009-01-21 ETA SA Manufacture Horlogère Suisse Stossfeste Vorrichtung für einen durch eine Schwungmasse angetriebenen Generator
JP3832270B2 (ja) * 2001-04-13 2006-10-11 セイコーエプソン株式会社 偏心錘付時計
WO2004068247A1 (ja) * 2003-01-28 2004-08-12 Seiko Epson Corporation 多機能時計
DE60328353D1 (de) * 2003-02-04 2009-08-27 Vaucher Mft Fleurier Sa Schwungmasse
EP1918789B1 (de) * 2006-10-31 2008-12-24 The Swatch Group Management Services AG Schwingmasse zum Wiederaufladen der Energiequelle eines tragbaren Instruments

Also Published As

Publication number Publication date
US7946756B2 (en) 2011-05-24
US20090257322A1 (en) 2009-10-15
ATE544098T1 (de) 2012-02-15
JP5284852B2 (ja) 2013-09-11
JP2009258110A (ja) 2009-11-05
HK1138384A1 (en) 2010-08-20
CN101566824B (zh) 2012-01-11
EP2110719A1 (de) 2009-10-21
CN101566824A (zh) 2009-10-28
SG156580A1 (en) 2009-11-26

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