EP2690508B1 - Spiral d'horlogerie - Google Patents

Spiral d'horlogerie Download PDF

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Publication number
EP2690508B1
EP2690508B1 EP12178081.1A EP12178081A EP2690508B1 EP 2690508 B1 EP2690508 B1 EP 2690508B1 EP 12178081 A EP12178081 A EP 12178081A EP 2690508 B1 EP2690508 B1 EP 2690508B1
Authority
EP
European Patent Office
Prior art keywords
coil
balance spring
balance
stopping means
complementary
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
EP12178081.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2690508A1 (fr
Inventor
Marc Stranczl
Marco Verardo
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 EP12178081.1A priority Critical patent/EP2690508B1/fr
Priority to CH01170/12A priority patent/CH706766A2/fr
Priority to TW102125206A priority patent/TWI602038B/zh
Priority to KR1020130083501A priority patent/KR101513797B1/ko
Priority to US13/948,626 priority patent/US8821007B2/en
Priority to RU2013135097A priority patent/RU2615595C2/ru
Priority to CN201310320766.3A priority patent/CN103576528B/zh
Priority to JP2013155241A priority patent/JP5503788B2/ja
Publication of EP2690508A1 publication Critical patent/EP2690508A1/fr
Priority to HK14107968.7A priority patent/HK1194492A1/zh
Application granted granted Critical
Publication of EP2690508B1 publication Critical patent/EP2690508B1/fr
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
    • G04B17/20—Compensation of mechanisms for stabilising frequency
    • G04B17/26—Compensation of mechanisms for stabilising frequency for the effect of variations of the impulses
    • 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
    • G04B17/04—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
    • G04B43/00—Protecting clockworks by shields or other means against external influences, e.g. magnetic fields
    • G04B43/002—Component shock protection arrangements
    • 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
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/14—Mainsprings; Bridles therefor

Definitions

  • the invention relates to an anti-gallop hairspring comprising at least one strand wound between a first end and a second end and comprising at least two pairs of turns each consisting of a first turn and a second turn immediately adjacent comprising respectively stopping means and stopping means complementary staggered with each other, and defining together, for each of said couples, a respective maximum angular stroke, during a local coupling of said first turn and said second turn resulting from the cooperation abutting said stop means with said complementary stop means during acceleration in contraction or extension of said hairspring greater than set values, for limiting the number of active turns of said hairspring.
  • the invention also relates to a sprung balance-spring comprising at least one such spiral, and comprising a rocker pivoting about an axis and to which is fixed said first or second end of said spiral.
  • the invention also relates to a watch movement comprising at least one such sprung balance and a plate carrying a mounting stud of one end of said hairspring.
  • the invention also relates to a timepiece comprising at least one such movement, and / or at least one such sprung balance.
  • the invention relates to the field of watchmaking mechanisms, and more particularly watch regulators.
  • regulating bodies including the exhausts must meet several criteria called "security".
  • security One of the safety, the anti-gallop system, aims to prevent the angular extension of the balance beyond a normal angle of rotation.
  • the technical problem is to design a safety mechanism, including anti-gallop, making a limitation of the pivot angle of a rocker during excessive acceleration, especially during shocks, especially for a detent escapement.
  • Such an anti-gallop mechanism must be able to act in both directions of pivoting of the balance, that is to say both in extension and contraction of the spiral.
  • One solution consists in modifying the spiral geometry by co-operating in abutment with consecutive coil lugs, so as to make certain turns inactive, and thus to modify the rigidity of the spiral and its response to the pulses.
  • Such a mechanism is known, capable of limiting the angular travel of the balance in both directions of pivoting, by the document EP 2 434 353 A1 in the name of WATCHES BREGUET SA, which describes a spiral anti-gallop by the hooking between them of notches belonging to consecutive turns, as well in contraction as in extension of the spiral.
  • the manouvre is effective, however the recovery of torque remains relatively abrupt.
  • the present invention aims to improve safety, by disturbing only very slightly the inertia of the balance, limiting its angular travel in both directions of rotation, and progressively performing torque recovery.
  • the invention relates to a clockwise anti-gallop hairspring comprising at least one strand wound between a first end and a second end and comprising at least two pairs of turns each consisting of a first turn and a second turn. immediately adjacent turn comprising respectively stopping means and complementary stopping means staggered with each other, and defining together, for each of said pairs, a respective maximum angular stroke, during a local coupling of said first turn and said second turn resulting from the cooperation abutting said stop means with said complementary stop means during acceleration in contraction or extension of said hairspring greater than set values, for limiting the number of active turns of said hairspring, characterized in that, in at least two of said pairs of turns, said respective stop means and complementary stop means are arranged in such a way that they define values of maximum angular stroke different, so as to gradually limit the amplitude of pivoting between said first and second ends of said hairspring during angular or radial accelerations of said hairspring greater than said set values, so as to cooperate in abutment said stop means
  • the invention also relates to a sprung balance-spring comprising at least one such spiral, and comprising a balance pivoting about an axis and to which is fixed said first or second end of said spiral, characterized in that the pivoting amplitude said balance is less than 360 °.
  • the invention also relates to a watch movement comprising at least one such sprung balance and a plate carrying a mounting stud of one end of said hairspring.
  • the invention also relates to a timepiece comprising at least one such movement, and / or at least one such sprung balance.
  • the invention relates to the field of watchmaking mechanisms, and more particularly watch regulators.
  • the present invention aims to improve the safety of any oscillating mechanism or energy storage, comprising a spiral spring, including a balance sprung mechanism.
  • the principle adopted is to modify the resulting rigidity of the spring when an incident occurs, under conditions of use which differ from normal walking, and particularly during strong acceleration or shock.
  • the modification of the rigidity of the hairspring may have other applications, and the present description, which relates to a preferred application of this invention to the anti-gallop system of an escapement mechanism, is in no way limiting.
  • the present invention applied to a sprung balance, aims to limit the angle of rotation of the balance in mechanical watches to a given value, especially for amplitudes greater than 360 °.
  • the limitation of the angular stroke is in both directions of rotation and this without modifying the inertia of the balance.
  • the sprung balance is said free during its normal angular stroke (compared to the anti-gallop system) in that it does not cause any shock during the normal movement of the sprung balance.
  • the principle of the proposed system is based on a temporary modification of the spiral geometry.
  • Limit stops consisting of two stops, as well as a locking arm race, are implanted on two consecutive turns of the spiral. For a given maximum angle of rotation, the stops are placed on the turns so as to limit this relative angular travel between two turns.
  • the stop blocks the stroke of the locking arm, the spiral loses an active coil and its rigidity is thus modified.
  • This stop system is therefore based on the relative angular displacement between two turns.
  • the distance between the stops and the locking arm may be unsymmetrical.
  • the system according to the invention therefore limits the number of active turns, according to the angle of rotation, and according to the movement of the turns of the spiral.
  • the rigidity of the hairspring, depending on the angle of rotation can therefore be modified momentarily, by adding, on at least one pair of turns and at most all the turns, of such a system of stops.
  • the stiffness according to the amplitude of rotation can therefore be defined by the distribution and the number of stop system distributed on the spiral.
  • the invention seeks to effect a progressive limitation of the rotation angle by progressive modification of the resulting rigidity of the spiral.
  • the spiral comprises staggered stops on neighboring turns, which interfere with each other in the event of shock or amplitude overshoot, at least two neighboring sets of turns are thus equipped, but with limiting angles. different between a first game, more internal, where the angle is the largest, and a second game, more external, where the angle is smaller.
  • care is taken to balance the center of gravity of the spiral.
  • the geometry, distribution, position and number of stops require a thorough design, and this document summarizes only the principle.
  • the manufacture of such a spiral is based on micro-manufacturing processes allowing great freedom of planar design. It is possible to make such a spiral in silicon technology.
  • the present invention is not limited to this technology, "LIGA" processes and other micro-manufacturing processes commonly used for timepiece components, and in particular exhaust mechanisms, are usable.
  • the invention relates in particular to a clockwise anti-gallop hairspring 1 comprising at least one strand 2 wound between a first end 3 and a second end 4.
  • This hairspring 1 comprises at least two pairs of turns 50.
  • Each pair 50 is composed of a first turn 51 and a second turn 52 immediately adjacent respectively comprising stop means 11 and complementary stop means 12 staggered with each other.
  • stop means 11 and complementary stop means 12 together define, for the torque 50 to which they belong, a maximum angular travel CA during a local coupling of the first turn 51 and the second turn 52.
  • This local coupling results from the abutting cooperation of the stop means 11 with the complementary stop means 12 during acceleration in contraction or extension of the hairspring 1 greater than set values, or amplitude overshoot during the rotation of the this spiral 1, to limit the number of active turns of the spiral 1.
  • At least two of these pairs of turns 50 define different angular stroke CA values, so as to progressively limit the amplitude of pivoting between the first 3 and second 4 ends of the spiral, 1, when angular or radial accelerations of the hairspring 1 greater than said set values, so as to abut one of the couples 50 before the other, and thus gradually modify the resulting rigidity of the hairspring 1, by deactivating or reactivating successively some of its turns 5.
  • the curve of the figure 2 shows the variation of the torque as a function of the angle of rotation, we see the breaks in slope at the passage of each point corresponding to an abutment and coupling configuration, as explained below.
  • the stop means 11, situated on one of the two turns of the pair 50 comprise two stop stops 13, 14, of interfering trajectory with at least one complementary stop stop 15, situated on the other of the two turns of the same pair 50, that comprise the complementary stop means 12.
  • the interference at the extreme stop positions defines a range of limitation of the angular stroke CA of the first turn 51 relative to the second turn 52. This limitation makes it possible to temporarily limit the number of active turns of the spiral 1, when said at least one complementary stop stop 15 bears on one of these two stop stops 13, 14.
  • a turn for example the first turn 51 or the second turn 52, comprises at least one radial stop 6 limiting the radial displacement of the first turn 51 relative to the second turn 52.
  • This particular coupling is based on the relative radial displacement between the turns. It is however limited to the contraction of the hairspring and therefore to a single direction of rotation of the balance.
  • At least one radial abutment 6 comprises a friction surface 61, which is arranged to cooperate with a complementary friction surface 62 that includes the second turn 52 or the first turn 51 respectively.
  • the invention also relates to a balance-spring balance spring comprising at least one such spring 1, and having a rocker 7 pivoting about an axis D and to which is fixed the first 3 or second 4 end of the hairspring 1.
  • the pivoting amplitude of this balance 7 is less than 360 °.
  • the invention also relates to a watch movement 20 comprising such a spring balance 10, and a plate 8 carrying a pin 9 for fixing one of the ends 3, 4 of the spring 1.
  • the invention also relates to a timepiece 30 comprising at least one such movement 20, and / or at least one such spring balance 10.
  • the system has the advantage of limiting the travel of the balance in both directions of rotation. This limitation is made by modifying the rigidity of the hairspring. This modification of the rigidity can be adapted by the choice of the number and the distribution of the abutment surfaces incorporated in the spiral.
  • the inertia of the balance spring system is modified only by the modification of the spiral inertia.
  • the anti-gallop system does not disturb the oscillations normal sprung balance, it influences its operation only when exceeding the amplitude of rotation.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Springs (AREA)
EP12178081.1A 2012-07-26 2012-07-26 Spiral d'horlogerie Active EP2690508B1 (fr)

Priority Applications (9)

Application Number Priority Date Filing Date Title
EP12178081.1A EP2690508B1 (fr) 2012-07-26 2012-07-26 Spiral d'horlogerie
CH01170/12A CH706766A2 (fr) 2012-07-26 2012-07-26 Spiral d'horlogerie anti-galop.
TW102125206A TWI602038B (zh) 2012-07-26 2013-07-15 用於時計的防跳脫游絲，及具有此游絲的時計彈簧平衡件、時計機芯和時計
KR1020130083501A KR101513797B1 (ko) 2012-07-26 2013-07-16 시계 밸런스 스프링
US13/948,626 US8821007B2 (en) 2012-07-26 2013-07-23 Timepiece balance spring
RU2013135097A RU2615595C2 (ru) 2012-07-26 2013-07-25 Балансирная пружина часов
CN201310320766.3A CN103576528B (zh) 2012-07-26 2013-07-26 钟表游丝
JP2013155241A JP5503788B2 (ja) 2012-07-26 2013-07-26 時計のヒゲゼンマイ
HK14107968.7A HK1194492A1 (zh) 2012-07-26 2014-08-04 鐘錶游絲

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12178081.1A EP2690508B1 (fr) 2012-07-26 2012-07-26 Spiral d'horlogerie

Publications (2)

Publication Number Publication Date
EP2690508A1 EP2690508A1 (fr) 2014-01-29
EP2690508B1 true EP2690508B1 (fr) 2015-02-25

Family

ID=46650387

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12178081.1A Active EP2690508B1 (fr) 2012-07-26 2012-07-26 Spiral d'horlogerie

Country Status (9)

Country Link
US (1) US8821007B2 (ru)
EP (1) EP2690508B1 (ru)
JP (1) JP5503788B2 (ru)
KR (1) KR101513797B1 (ru)
CN (1) CN103576528B (ru)
CH (1) CH706766A2 (ru)
HK (1) HK1194492A1 (ru)
RU (1) RU2615595C2 (ru)
TW (1) TWI602038B (ru)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2874020B1 (fr) * 2013-11-15 2016-10-26 Rolex Sa Système réglant pour mouvement d'horlogerie
EP2884347A1 (fr) * 2013-12-16 2015-06-17 ETA SA Manufacture Horlogère Suisse Spiral avec dispositif anti-rapprochement de spires
EP3159748B1 (fr) * 2015-10-22 2018-12-12 ETA SA Manufacture Horlogère Suisse Spiral a encombrement reduit a section variable

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3696687A (en) * 1971-03-25 1972-10-10 Ametek Inc Plastic hairspring
DE2421750A1 (de) 1974-05-06 1975-11-20 Timex Corp Insbesondere fuer elektrische uhren vorgesehene spiralfederanordnung
EP1791039A1 (fr) * 2005-11-25 2007-05-30 The Swatch Group Research and Development Ltd. Spiral en verre athermique pour mouvement d'horlogerie et son procédé de fabrication
CH698876B1 (fr) * 2006-05-17 2009-11-30 Patek Philippe Sa Ensemble spiral-virole pour mouvement d'horlogerie.
EP2196867A1 (fr) 2008-12-15 2010-06-16 Montres Breguet S.A. Spiral à élévation de courbe en matériau à base de silicium
EP2405312A1 (fr) * 2010-07-09 2012-01-11 Montres Breguet S.A. Spiral de balancier à deux niveaux et à centre de masse immobile
EP2434353B1 (fr) 2010-09-28 2018-01-10 Montres Breguet SA Spiral anti-galop pour échappement d'horlogerie
EP2450757B1 (fr) * 2010-11-04 2014-10-15 Nivarox-FAR S.A. Dispositif anti-galop pour mécanisme d'échappement
EP2520983A1 (fr) * 2011-05-03 2012-11-07 Nivarox-FAR S.A. Barillet comportant des moyens élastiques d'accumulation d'énergie

Also Published As

Publication number Publication date
US8821007B2 (en) 2014-09-02
RU2013135097A (ru) 2015-01-27
KR20140013934A (ko) 2014-02-05
JP2014025938A (ja) 2014-02-06
CN103576528B (zh) 2016-06-15
JP5503788B2 (ja) 2014-05-28
RU2615595C2 (ru) 2017-04-05
US20140029390A1 (en) 2014-01-30
KR101513797B1 (ko) 2015-04-20
HK1194492A1 (zh) 2014-10-17
TW201411302A (zh) 2014-03-16
EP2690508A1 (fr) 2014-01-29
CH706766A2 (fr) 2014-01-31
TWI602038B (zh) 2017-10-11
CN103576528A (zh) 2014-02-12

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