EP3217229B1 - Système de compensation thermique auxiliaire réglable - Google Patents

Système de compensation thermique auxiliaire réglable Download PDF

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Publication number
EP3217229B1
EP3217229B1 EP16158888.4A EP16158888A EP3217229B1 EP 3217229 B1 EP3217229 B1 EP 3217229B1 EP 16158888 A EP16158888 A EP 16158888A EP 3217229 B1 EP3217229 B1 EP 3217229B1
Authority
EP
European Patent Office
Prior art keywords
balance wheel
compensation system
adjustable auxiliary
adjustable
balance
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
EP16158888.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3217229A1 (fr
Inventor
Alain Zaugg
Davide Sarchi
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 Breguet SA
Original Assignee
Montres Breguet 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
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Application filed by Montres Breguet SA filed Critical Montres Breguet SA
Priority to EP16158888.4A priority Critical patent/EP3217229B1/fr
Priority to US15/422,671 priority patent/US9989922B2/en
Priority to JP2017029758A priority patent/JP6275299B2/ja
Priority to CN201710128441.3A priority patent/CN107168031B/zh
Publication of EP3217229A1 publication Critical patent/EP3217229A1/fr
Priority to HK18102981.7A priority patent/HK1243502A1/zh
Application granted granted Critical
Publication of EP3217229B1 publication Critical patent/EP3217229B1/fr
Active 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
    • G04B17/20—Compensation of mechanisms for stabilising frequency
    • G04B17/22—Compensation of mechanisms for stabilising frequency for the effect of variations of temperature
    • G04B17/222—Compensation of mechanisms for stabilising frequency for the effect of variations of temperature with balances
    • 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
    • G04B17/063—Balance construction
    • 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
    • G04B17/22—Compensation of mechanisms for stabilising frequency for the effect of variations of temperature
    • G04B17/227—Compensation of mechanisms for stabilising frequency for the effect of variations of temperature composition and manufacture of the material used

Definitions

  • the invention relates to an adjustable auxiliary thermal compensation system and in particular such a system mounted on a balance of a balance-spring balance spring.
  • the aim of the present invention is to overcome all or part of the drawbacks mentioned above by proposing a balance wheel offering a thermal compensation adjustment making it possible to correct the manufacturing dispersions of the elements of a balance-sprung resonator.
  • the invention relates to a pendulum comprising a clamp connected to a hub by means of at least one arm, characterized in that the pendulum comprises an auxiliary thermal compensation system adjustable mounted in the space delimited by the serge allowing adjustment of the thermal compensation of the balance wheel.
  • the adjustable auxiliary thermal compensation system is adaptable to a balance of an already developed timepiece movement and makes it possible to compensate individually for the dispersion specific to each movement in order to make, for example, a balance - hairspring resonator even less sensitive to variations in temperature only with a compensating hairspring alone. Therefore, the adjustable auxiliary thermal compensation system does not do all of the compensation but provides a means to fine tune the basic setting.
  • the invention relates to a resonator comprising a compensating hairspring characterized in that the compensating hairspring is coupled to a balance according to one of the preceding variants.
  • a resonator 1 comprising a compensating hairspring 3 of the silicon type coated with silicon dioxide and cooperating with a balance 5 of predetermined inertia offers a unprecedented thermal compensation in the field of mechanical watchmaking.
  • the invention therefore proposes to modify a conventional pendulum comprising an uncut twill connected to a hub using at least one arm.
  • the pendulum advantageously comprises an adjustable auxiliary thermal compensation system mounted in the space delimited by the uncut twill or in its close periphery making it possible to offer an adjustment of the thermal compensation of the pendulum.
  • the adjustable auxiliary thermal compensation system makes it possible to individually correct the thermal coefficient of each movement in order to make, for example, a balance-spring balance spring even less sensitive to temperature variations than with a balance spring alone. Therefore, the adjustable auxiliary thermal compensation system does not do all of the compensation but provides a means to fine tune the basic setting.
  • a balance 15 can be seen comprising a clamp 14 provided with regulating screws 16 and connected to a hub 11 by means of four arms 12.
  • the balance 15 advantageously comprises, according to the invention, an adjustable auxiliary thermal compensation system 13 mounted in the space delimited by the serge 14, that is to say the volume delimited by the internal diameter of the serge 14, or in its close periphery, making it possible to offer an adjustment of the thermal compensation of the balance 15 in equivalent volume / size.
  • the aim is to offer a possibility of regulating the variation of the inertia of the balance 15 in a predetermined manner as a function of temperature variations in order to correct the manufacturing dispersions of the elements of a resonator 1 balance - hairspring.
  • the adjustable auxiliary thermal compensation system 13 is mounted on one of the arms 12 of the balance 15.
  • the adjustable auxiliary thermal compensation system 13 comprises a fastening device 19 comprising adjustable positioning means between the hub 11 and the serge 14 in order to adapt the influence of the adjustable auxiliary thermal compensation system 13.
  • the adjustable positioning means comprise a radial recess 18 making it possible to choose a position along the radius of the balance 15 by means of a translation T between the hub 11 and the clamp 14.
  • the fastening device 19 further comprises adjustable orientation means in order to further optimize the adaptation of the influence of the adjustable auxiliary thermal compensation system 13.
  • the adjustable orientation means comprise a pivot 22 mounted in the radial recess 18 making it possible to choose an angle relative to the arm 12 of the balance 15 by means of a rotation R of the base 17 of the auxiliary thermal compensation system adjustable 13, for example, by means of the notch 20.
  • the adjustable auxiliary thermal compensation system 13 comprises a bimetallic device 21 integral with the base 17 and which comprises at least a first blade 23 and at least a second blade 25. Said at least a first and at least a second blade 23, 25 each have a different coefficient of expansion and are arranged to attach to one another so that the curvature of the bimetallic device 21 varies as a function of the temperature.
  • the bimetallic device 21 comprises a block 24 in one piece with the end of one of said at least a first and at least a second blade 23, 25 making it possible to increase the influence of the adjustable auxiliary thermal compensation system. 13.
  • the balance 15 can include several adjustable auxiliary thermal compensation systems 13 and / or a counterweight for each adjustable auxiliary thermal compensation system 13 can be used as explained for the second embodiment.
  • the pendulum can also be of different geometry such as, for example, with more or less arms, with a cut twill or with a twill formed from several curved lobes.
  • each adjustable auxiliary thermal compensation system 13 could be adapted as to its materials and geometries used of bimetallic device 21 and / or its block 24 and / or its fixing device 19 according to the desired range of adjustment of the thermal coefficient.
  • a balance 35 can be seen comprising a serge 34 provided with adjusting screws 36 and connected to a hub 31 by means of four arms 32.
  • the balance 35 advantageously comprises according to the invention, an adjustable auxiliary thermal compensation system 33 mounted in the space delimited by the serge 34, that is to say the volume delimited by the internal diameter of the serge 34, making it possible to offer an adjustment of the thermal compensation of the balance wheel 35.
  • the aim is to offer a possibility of adjusting the variation of the inertia of the balance wheel 35 in a predetermined manner as a function temperature variations in order to correct the manufacturing dispersions of the elements of a resonator 1 balance - hairspring.
  • the adjustable auxiliary thermal compensation system 33 is mounted on the hub 31 of the pendulum 35 using two lugs 46.
  • the adjustable auxiliary thermal compensation system 33 comprises a fixing device 39 comprising adjustable positioning means between the hub 31 and the clamp 34 in order to adapt the influence of the adjustable auxiliary thermal compensation system 33.
  • the adjustable positioning means comprise a radial recess 38 between the two tabs 46 making it possible to choose a position along the radius of the pendulum 35 by means of a translation T between the hub 31 and the clamp 34.
  • the fixing device 39 also comprises adjustable orientation means in order to further optimize the adaptation of the influence of the adjustable auxiliary thermal compensation system 33.
  • the adjustable orientation means comprise a pivot 42 mounted in the radial recess 38 between the legs 46 making it possible to choose an angle relative to the legs 46 by means of a rotation R of the base 37 of the thermal compensation system adjustable auxiliary 33, for example, by means of the notch 40.
  • the adjustable auxiliary thermal compensation system 33 comprises a bimetallic device 41 secured to the base 37 and which comprises at least a first blade 43 and at least a second blade 45. Said at least a first and at least a second blade 43, 45 each have a different coefficient of expansion and are arranged to attach to one another so that the curvature of the bimetal device 41 varies as a function of the temperature.
  • the bimetal device 41 comprises a block 44 in a single piece with the end of one of said at least a first and at least a second blade 43, 45 making it possible to increase the influence of the adjustable auxiliary thermal compensation system. 33.
  • each adjustable auxiliary thermal compensation system 33 could be adapted as to its materials and geometries used of bimetallic device 41 and / or its block 44 and / or its fixing device 39 according to the desired range of adjustment of the thermal coefficient.
  • the balance 35 ' can include several adjustable auxiliary thermal compensation systems 33 1 , 33 2 in order to balance the balance 35'. So as visible to the figure 5 , the balance 35 ′ comprises two adjustable auxiliary thermal compensation systems 33 1 , 33 2 distributed symmetrically with respect to the hub 31.
  • each adjustable auxiliary thermal compensation system 33 1 , 33 2 in the radial recess 38 1 , 38 2 of the legs 46 1 , 46 2 associated it is possible to choose a predetermined correction of the inertia of the pendulum 35 'as a function of temperature variations while having better balancing than in the example of the figure 3 .
  • the 35 "pendulum may also include a counterweight 47 1 , 47 2 for each adjustable auxiliary thermal compensation system 33 1 ', 33 2 ' in order to make it substantially stationary, at a given temperature, for example 23 ° C, the center of mass of each adjustable auxiliary thermal compensation system 33 1 ′, 33 2 ′ whatever the rotation R 1 , R 2 carried out.
  • the 35 "balance comprises two adjustable auxiliary thermal compensation systems 33 1 ′, 33 2 ′ distributed symmetrically with respect to the hub 31.
  • the adjustable auxiliary thermal compensation systems 33 1 ′ , 33 2 ' are each mounted on the hub 31 of the 35 "balance using two lugs 46 1 , 46 2 .
  • a counterweight 47 1 , 47 2 is integral with each base 37 1 , 37 2 so as to compensate for the mass of the bimetallic strip assembly 46 1 , 46 2 - block 44 1 , 44 2 when each adjustable auxiliary thermal compensation system 33 1 ', 33 2 ' performs a rotation R 1 , R 2 .
  • each adjustable auxiliary thermal compensation system 33 1 , 33 2 comprises a fixing device 39 1 , 39 2 comprising adjustable positioning means with a radial recess 38 1 , 38 2 between the two legs 46 1 , 46 2 making it possible to choose a position along the radius of the balance 35 "using a translation T 1 , T 2 between the hub 31 and the clamp 34. It is therefore understood that the adjustable auxiliary thermal compensation systems 33 1 , 33 2 have a fixed working radius relative to the axis of rotation of the 35 "balance but free on rotating friction.
  • the fixing device 39 1 , 39 2 further comprises adjustable orientation means which comprise a pivot 42 1 , 42 2 mounted in the radial recess 38 1 , 38 2 between the legs 46 1 , 46 2 allowing to choose an angle with respect to the legs 46 1 , 46 2 by means of a rotation R 1 , R 2 of the base 37 1 , 37 2 of the adjustable auxiliary thermal compensation system 33 1 ', 33 2 '.
  • adjustable orientation means comprise a pivot 42 1 , 42 2 mounted in the radial recess 38 1 , 38 2 between the legs 46 1 , 46 2 allowing to choose an angle with respect to the legs 46 1 , 46 2 by means of a rotation R 1 , R 2 of the base 37 1 , 37 2 of the adjustable auxiliary thermal compensation system 33 1 ', 33 2 '.
  • each adjustable auxiliary thermal compensation system 33 1 ', 33 2 ' in the radial recess 38 1 , 38 2 of the legs 46 1 , 46 2 associated, it is possible to choose a predetermined correction of the inertia of the 35 "balance as a function of temperature variations while having better balancing and keeping a center of mass substantially stationary of the adjustable auxiliary thermal compensation systems 33 1 ', 33 2 ' compared to the example of the figure 3 .
  • a balance 55 can be seen comprising a serge 54 provided with regulating screws 56 and connected to a hub 51 by means of four arms 52.
  • the balance 55 advantageously comprises according to the invention, an adjustable auxiliary thermal compensation system 53 mounted in the space delimited by the serge 54, that is to say the volume delimited by the internal diameter of the serge 54, making it possible to offer an adjustment of the thermal compensation of the balance 55.
  • the aim is to offer a possibility of adjusting the variation of the inertia of the balance 55 in a predetermined manner as a function of temperature variations in order to correct the manufacturing dispersions of the elements of a resonator 1 balance - hairspring.
  • the adjustable auxiliary thermal compensation system 53 is mounted on the hub 51 of the pendulum 55 using two lugs 66.
  • the adjustable auxiliary thermal compensation system 53 includes a fixing device 59 comprising adjustable positioning means between the hub 51 and the clamp 54 in order to adapt the influence of the adjustable auxiliary thermal compensation system 53.
  • the adjustable positioning means comprise a radial recess 58 between the two tabs 66 making it possible to choose a position along the radius of the pendulum 55 by means of a translation T between the hub 51 and the clamp 54.
  • the fixing device 59 also comprises adjustable orientation means in order to further optimize the adaptation of the influence of the adjustable auxiliary thermal compensation system 53.
  • the adjustable orientation means comprise a pivot 62 mounted in the radial recess 58 between the legs 66 making it possible to choose an angle relative to the legs 66 by means of a rotation R of the base 57 of the thermal compensation system adjustable auxiliary 53, for example, by means of the notch 60.
  • the adjustable auxiliary thermal compensation system 53 comprises a bimetallic device 61 integral with the base 57 and which comprises at least a first blade 63 and at least a second blade 65. Said at least a first and at least a second blade 63, 65 each have a different coefficient of expansion and are arranged to attach to one another so that the curvature of the bimetallic device 61 varies as a function of the temperature.
  • the bimetallic device 61 comprises a block 64 in one piece with the end of one of said at least a first and at least a second blade 63, 65 making it possible to increase the influence of the adjustable auxiliary thermal compensation system. 53.
  • the pendulum 55 can comprise several adjustable auxiliary thermal compensation systems 53 and / or a counterweight for each adjustable auxiliary thermal compensation system 53 can be used as explained above. for the second embodiment.
  • the pendulum can also be of different geometry such as, for example, with more or less arms, with a cut twill or with a twill formed from several curved lobes.
  • each adjustable auxiliary thermal compensation system 53 could be adapted as to its materials and geometries used of bimetallic device 61 and / or its block 64 and / or its fixing device 59 according to the desired range of adjustment of the thermal coefficient.
  • the bimetal device must be sensitive to temperature variations.
  • the bimetal device according to the invention comprises at least a first blade based on silicon and at least a second blade based on metal.
  • Said at least one first silicon-based blade may comprise monocrystalline silicon, doped monocrystalline silicon, polycrystalline silicon, doped polycrystalline silicon, porous silicon, silicon oxide, quartz, silica, nitride silicon or silicon carbide.
  • silicon-based material is in the crystalline phase, any crystalline orientation can be used.
  • said at least one second metal-based blade may include silver and / or magnesium and / or lead and / or thallium and / or nickel and / or copper and / or zinc and / or gold and / or aluminum and / or indium and / or vulcanite.
  • said at least a first and at least a second blade are arranged to attach to one another so that the curvature of the bimetal device varies as a function of the temperature.
  • the strip formed by said at least a first and at least a second blade curves with the temperature increase on the side where the coefficient of expansion is the lowest.
  • the bimetallic device may comprise several first blades arranged to attach to a single second blade or, alternatively, that several second blades are arranged to attach to a single first blade.
  • a difference in the expansion coefficient of the bimetal device is sought which is approximately between 10 and 30 10 -6 K -1 and, preferably, a low sensitivity to magnetic fields.
  • the pair of monocrystalline silicon - nickel / phosphorus alloy is used.
  • other alloys can be applied by galvanic growth such as gold. It is also possible to assemble a silicon-based part on components machined in a more traditional way such as copper alloys or non-magnetic steels.
  • monocrystalline silicon has a coefficient of linear expansion ⁇ at 25 ° C around 2.5 10 -6 K -1 while metals or metal alloys generally have coefficients of linear expansion at 25 ° C between substantially 13 and 32 10 -6 K -1 . It is therefore understood that the difference in expansion coefficient of the bimetal device allows a high sensitivity to temperature.
  • the bimetal device under ambient conditions of temperature and pressure (CATP) corresponding to a temperature of 25 ° C and a pressure of 100 kPa, the bimetal device preferably forms a curved band.
  • CAP temperature and pressure
  • interlocking means formed either by a groove - hook assembly or by notch - rib assemblies.
  • said at least a first and at least a second blade could be attached to one another by the use of an adhesive material or by electroforming.
  • each block 24, 44, 44 1 , 44 2 , 64 could be alternately replaced by a counterweight fixed on the free end of one of said at least a first and / or at least a second blade in the manner of screws.
  • the counterweight could thus be formed from a third material, for example denser than the first two.
  • the adjustable auxiliary thermal compensation system can be mounted on an arm or the pendulum hub. However, nothing prevents the adjustable auxiliary thermal compensation system from being alternately mounted on the pendulum rim, that is to say on the internal diameter or the external diameter of the balance rim.

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  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Testing Of Balance (AREA)
  • Micromachines (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)
EP16158888.4A 2016-03-07 2016-03-07 Système de compensation thermique auxiliaire réglable Active EP3217229B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP16158888.4A EP3217229B1 (fr) 2016-03-07 2016-03-07 Système de compensation thermique auxiliaire réglable
US15/422,671 US9989922B2 (en) 2016-03-07 2017-02-02 Adjustable auxiliary temperature compensation system
JP2017029758A JP6275299B2 (ja) 2016-03-07 2017-02-21 調整可能な補助的な温度補償システム
CN201710128441.3A CN107168031B (zh) 2016-03-07 2017-03-06 可调节的辅助温度补偿系统
HK18102981.7A HK1243502A1 (zh) 2016-03-07 2018-03-01 可調節的輔助溫度補償系統

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16158888.4A EP3217229B1 (fr) 2016-03-07 2016-03-07 Système de compensation thermique auxiliaire réglable

Publications (2)

Publication Number Publication Date
EP3217229A1 EP3217229A1 (fr) 2017-09-13
EP3217229B1 true EP3217229B1 (fr) 2020-01-01

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Application Number Title Priority Date Filing Date
EP16158888.4A Active EP3217229B1 (fr) 2016-03-07 2016-03-07 Système de compensation thermique auxiliaire réglable

Country Status (5)

Country Link
US (1) US9989922B2 (ja)
EP (1) EP3217229B1 (ja)
JP (1) JP6275299B2 (ja)
CN (1) CN107168031B (ja)
HK (1) HK1243502A1 (ja)

Families Citing this family (10)

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Publication number Priority date Publication date Assignee Title
EP3252545B1 (fr) * 2016-06-03 2019-10-16 The Swatch Group Research and Development Ltd. Mécanisme d'horlogerie à réglage d'inertie de balancier
CH713069A2 (fr) * 2016-10-25 2018-04-30 Eta Sa Mft Horlogere Suisse Montre mécanique avec résonateur rotatif isochrone, insensible aux positions.
JP6789140B2 (ja) * 2017-01-31 2020-11-25 セイコーインスツル株式会社 温度補償型てんぷ、ムーブメント及び時計
EP3502787B1 (fr) 2017-12-22 2020-11-18 The Swatch Group Research and Development Ltd Procédé de fabrication d'un balancier pour pièce d'horlogerie
EP3502786A1 (fr) * 2017-12-22 2019-06-26 The Swatch Group Research and Development Ltd Balancier pour pièce d'horlogerie et procédé de fabrication d'un tel balancier
JP7060988B2 (ja) * 2018-03-16 2022-04-27 セイコーインスツル株式会社 温度補償型てんぷ、ムーブメント及び時計
JP7159077B2 (ja) * 2019-02-25 2022-10-24 セイコーインスツル株式会社 温度補償型てんぷ、ムーブメント及び時計
USD918080S1 (en) * 2019-09-02 2021-05-04 Soprod Sa Movement for clocks and watches
EP3835879B1 (fr) * 2019-12-09 2024-01-24 The Swatch Group Research and Development Ltd Mecanisme resonateur d'horlogerie avec masse inertielle a reglage d'inertie et de balourd
USD937944S1 (en) * 2020-07-28 2021-12-07 Coulter Ventures, Llc. Weight plate

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Also Published As

Publication number Publication date
HK1243502A1 (zh) 2018-07-13
EP3217229A1 (fr) 2017-09-13
US20170255164A1 (en) 2017-09-07
JP2017161509A (ja) 2017-09-14
US9989922B2 (en) 2018-06-05
JP6275299B2 (ja) 2018-02-07
CN107168031B (zh) 2020-07-28
CN107168031A (zh) 2017-09-15

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