EP3217228B1 - Dispositif bilame sensible aux variations de température - Google Patents

Dispositif bilame sensible aux variations de température Download PDF

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Publication number
EP3217228B1
EP3217228B1 EP16158884.3A EP16158884A EP3217228B1 EP 3217228 B1 EP3217228 B1 EP 3217228B1 EP 16158884 A EP16158884 A EP 16158884A EP 3217228 B1 EP3217228 B1 EP 3217228B1
Authority
EP
European Patent Office
Prior art keywords
bimetallic device
bimetallic
compensating
temperature
silicon
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
EP16158884.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3217228A1 (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
Application filed by Montres Breguet SA filed Critical Montres Breguet SA
Priority to EP16158884.3A priority Critical patent/EP3217228B1/fr
Priority to US15/422,882 priority patent/US10976706B2/en
Priority to JP2017029753A priority patent/JP2017161508A/ja
Priority to CN201710128069.6A priority patent/CN107168030B/zh
Publication of EP3217228A1 publication Critical patent/EP3217228A1/fr
Priority to HK18102980.8A priority patent/HK1243501A1/zh
Priority to JP2018242286A priority patent/JP6662995B2/ja
Application granted granted Critical
Publication of EP3217228B1 publication Critical patent/EP3217228B1/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
    • G04B17/22—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 a bimetallic device sensitive to temperature variations and in particular such a device comprising two materials whose difference between the coefficients of expansion allows a variation of curvature as a function of the change in temperature.
  • Bimetallic devices are known to manufacture compensating balances with a cut serge formed of two half-rings each consisting of a first steel blade welded to a second brass blade.
  • the serge opens when the temperature lowers and closes when the temperature rises to compensate for the effect of temperature on the elasticity of a hairspring.
  • the object of the present invention is to overcome all or part of the disadvantages mentioned above by proposing a bimetallic device alternative to those mentioned below.
  • the invention relates to a bimetallic device comprising at least one first silicon-based blade and at least one second metal-based blade characterized in that said at least one first and at least one second blades are arranged to attach to one another, by interlocking or by electroforming, so that the curvature of the bimetallic device varies depending on the temperature.
  • the difference in expansion coefficient of the bimetallic device is approximately between 10 and 10 -6 K -1 depending on the used materials. This difference, which is much greater than that of the steel-brass pair of approximately 6 10 -6 K -1, allows a higher temperature sensitivity of the bimetallic device.
  • silicon-based and metal-based materials it is possible to work with silicon-based and metal-based materials in a wide variety of shapes and high manufacturing accuracy.
  • dry etching of the silicon-based material and electroforming of the metal-based material on the silicon-based material provides micron fabrication accuracy.
  • the invention relates to a compensating balance comprising at least one bimetallic device according to one of the preceding variants.
  • the bimetallic device according to the invention can be advantageously used to provide a main or auxiliary heat compensation to a resonator by the pendulum.
  • the compensating balance comprises a cut serge formed by two bimetallic devices each connected by at least one arm to a central opening in order to modify the inertia of the balance depending on the temperature.
  • the compensating balance comprises a one-piece serge connected by at least one arm to a central opening and in that said at least one bimetallic device is mounted on the serge in order to modify the inertia of the balance as a function of temperature.
  • the compensating balance comprises a monoblock serge connected by at least one arm to a central opening and in that said at least one bimetallic device is mounted on said at least one arm in order to modify the inertia of the balance according to of the temperature.
  • the invention relates to a compensating racket comprising at least one bimetallic device according to one of the preceding variants.
  • the bimetallic device according to the invention can be advantageously used to provide an auxiliary thermal compensation to a resonator by the raquetry with a very high accuracy.
  • the compensating racket may thus comprise a gap arranged to receive a spiral spring and connected to said at least one bimetallic device in order to modify the position of the gap as a function of the temperature.
  • the compensating racket may comprise a gap arranged to receive a spiral spring, the size of the gap being controlled by said at least one bimetallic device in order to modify the gap as a function of the temperature.
  • the invention relates to a temperature sensor comprising at least one bimetallic device according to one of the preceding variants.
  • the bimetallic device according to the invention can be advantageously used to measure the temperature with a very high accuracy.
  • the temperature sensor may thus comprise a display and an elastic device for tracking the movement of the at least one bimetallic device so as to modify the position of the display as a function of the temperature.
  • the invention relates to a compensating balance spring comprising at least one bimetallic device according to one of the preceding variants.
  • the bimetallic device according to the invention can in particular be advantageously used to provide an auxiliary thermal compensation to a resonator by the point of pitonnage with a very high accuracy.
  • the compensating hairspring may thus comprise an outer turn connected to said at least one bimetallic device which is arranged to be fixed to a bridge in order to modify the active length of the compensating hairspring depending on the temperature.
  • the invention relates to a bimetallic device sensitive to temperature variations.
  • the invention has been developed for horological applications of auxiliary thermal compensation or mechanical temperature measurement.
  • the bimetallic device can not be limited to applications in the watchmaking field.
  • the bimetallic device according to the invention comprises at least one first silicon-based blade and at least one second metal-based blade.
  • 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 crystalline phase, any crystalline orientation can be used.
  • said at least one second metal-based blade may comprise 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 one first and at least one second blades are arranged to attach to one another so that the curvature of the bimetallic device varies as a function of temperature. Indeed, the band formed by said at least a first and at least a second blade bends with the increase in temperature on the side where the coefficient of expansion is the lowest.
  • the bimetallic device may comprise a plurality of first blades arranged to attach to a single second blade or, alternatively, that a plurality of second blades are arranged to attach to a single first blade.
  • the bimetallic device which is approximately between 10 and 10 -6 K -1 and a low sensitivity to magnetic fields.
  • the monocrystalline silicon-nickel / phosphorus alloy pair is used.
  • the monocrystalline silicon has a coefficient of linear expansion ⁇ at 25 ° C around 2.5 10 -6 K -1 whereas the metals or metal alloys generally comprise coefficients of linear expansion ⁇ at 25 ° C between substantially 13 and 32 10 -6 K -1 . So we understand that the difference in expansion coefficient of the bimetallic device allows a high sensitivity to temperature.
  • the bimetallic device under the ambient conditions of temperature and pressure (CATP) corresponding to a temperature of 25 ° C. and a pressure of 100 kPa, the bimetallic device preferably forms a curved band.
  • CAP temperature and pressure
  • FIG. figure 1 A first example of a bimetallic device 1 is illustrated in FIG. figure 1 .
  • the bimetallic device 1 comprises a first blade 3 based on silicon and a second blade 5 based on metal.
  • the strip 7 formed by said first and second blades 3, 5 bends with the increase in temperature on the side where the coefficient of expansion is the weakest, that is to say the first blade 3 based on silicon.
  • said at least one first and at least one second blades 3, 5 are attached to one another by interlocking.
  • interlocking formed either by a set 4 groove - hook or sets 2, 2' notch - rib.
  • said at least one first and at least one second blades could be attached to each other by use of an adhesion material or by electroforming.
  • the strip 7 could be made integral by bonding or soldering of said first 3 and second 5 blades or the second blade 5 could be electroformed on the first blade 3.
  • the bimetallic device 1 further comprises a one-piece fastening base 9 with one of said first 3 and second 5 blades for mounting the bimetallic device 1 on another part.
  • the base 9 of fixation came from form with the second metal-based blade 5 and has a through-hole 8 which can be tapped.
  • the bimetallic device may comprise adjustable stop means for limiting the minimum and / or maximum variations of curvature of the bimetallic device. Indeed, it can be useful for the part on which the bimetallic device is attached to be able to limit the influence on only a certain temperature range, that is to say above a predefined temperature, below preset temperature or between two preset temperatures.
  • the first adjustable abutment means 11 thus comprises a threaded cylindrical abutment 12 intended to block the movement of the strip by contact with the first blade 3 while the second adjustable abutment means 13 comprise an abutment 14 in the shape of an L, comprising a part vertically threaded, and intended to block the movement of the strip by contact with the second blade 5.
  • the first adjustable stop means 15 thus comprises a threaded cylindrical stop 16 intended to block the displacement of the strip by contact with a part facing the first blade 3 while the second adjustable stop means 17 comprises a threaded cylindrical stop 18 intended to to block the moving the strip by contact with a part facing the second blade 5.
  • the bimetallic device may also comprise a block 6 which may be in one piece with the end of one of said at least one first and at least one second blades 3, 5 in order to increase the influence of the bimetallic device. Indeed, it may be useful for the part to which the bimetallic device is attached to be able to increase the influence by modifying the center of mass of the bimetallic device.
  • the block 6 could be a flyweight fixed on the end of one of said at least one first and at least one second blades 3, 5 in the manner of the first and second means 15, 17 of adjustable stop.
  • the flyweight could thus be formed from a third material, for example denser than said at least one first and at least one second blades 3, 5.
  • a first embodiment of the invention relates to a compensating balance comprising at least one bimetallic device according to one of the preceding variants. It is therefore understood that the bimetallic device according to the invention can be advantageously used to provide an auxiliary or main heat compensation at the balance to a resonator comprising a compensating spiral or not.
  • the compensating rocker 21 comprises a cut serge 23 formed by two bimetallic devices 25, 27 formed respectively by at least a first and at least a second blades 28, 28 ', 26, 26'.
  • Each bimetallic device 25, 27 is connected by at least one arm 22 to a central opening 24 in order to modify the inertia of the balance 21 as a function of temperature.
  • the second blades 26 and / or 26 'and / or said at least one arm 22 and / or the opening 24 can be monoblock.
  • weights 29, 29 ' are used to adjust the inertia of the compensating balance 21.
  • the bimetallic devices 25, 27 according to the invention are advantageously used to provide an auxiliary or main heat compensation at the balance to a resonator comprising a compensating spiral or not. It is also understood that, depending on the thermal compensation to be provided, the materials and the geometries used bimetallic device 25, 27 and, optionally, the block / feeder 6 and / or the fixing base 9 and / or means 11, 13, 15, 17 abutment, will be chosen to adjust the most precise movement of the watch movement. It is also possible to adjust the position of the bimetallic device 25, 27, that is to say its fixing position relative to the opening 24 as well as the angle that it forms relative to the arm 22, to optimize its use.
  • bimetallic devices 25, 27 may be distributed over the same part of the cut serge 23 or at the level of the said at least one arm 22. It is also possible, similarly to the example of FIG. figure 8 , that the bimetallic device 25, 27 used comprises several first blades arranged to attach to a single second blade or, alternatively, that a plurality of second blades are arranged to attach to a single first blade.
  • the compensating rocker 31, 41, 51 comprises an uncut serge 33 connected by at least one arm 32 to a central opening 34.
  • said at least one bimetallic device 35, 45, 55 is mounted on the serge 33 in order to modify the inertia of the compensating balance 31, 41, 51 as a function of temperature.
  • first and second blades it may be chosen to fix the bimetallic device on the inner diameter of the serge as illustrated in FIG. figure 6 , to fix the bimetallic device on the inner outside diameter of the serge as illustrated in figures 7 and 8 or both.
  • the bimetallic device 45 comprises a band formed by a single first blade and a single second blade and which is reported on the outer diameter of the serge 33.
  • the bimetallic device 45 may be distributed on the outer diameter of the serge 33.
  • the bimetallic device 55 mounted on the outer diameter of the serge 33 has a plurality of first blades arranged to attach to a single second blade or, alternatively, that a plurality of second blades are arranged to attach to a single first blade.
  • the bimetallic devices 45, 55 are advantageously used to provide an auxiliary heat compensation at the balance to a resonator comprising a compensating hairspring. It is understood that, depending on the auxiliary compensation to be provided, the materials and the geometries used bimetallic device 45, 55 and, optionally, the block / feeder 6 and / or the fixing base 9 and / or means 11, 13, 15, 17 abutment, will be chosen to adjust the most precise movement of the watch movement. It is also possible to adjust the position of the bimetallic device 45, 55 on the serge 33 to optimize its influence.
  • the bimetallic device 35 comprises a band formed by a single first blade and a single second blade and which is attached to the inner diameter of the serge 33.
  • the bimetallic device 35 may be distributed over the inner diameter of the serge 33 .
  • the bimetallic device mounted on the inner diameter of the serge 33 comprises a plurality of first blades arranged to attach to a single second blade or, alternatively, that a plurality of second blades are arranged to attach to a single first blade.
  • the bimetallic devices 35 according to the invention are advantageously used to provide thermal compensation auxiliary at the balance to a resonator comprising a compensating hairspring. It is understood that, depending on the auxiliary compensation to be provided, the materials and the geometries used bimetallic device 35 and, optionally, the block / feeder 6 and / or the fixing base 9 and / or means 11, 13, 15, 17 abutment, will be chosen to adjust the most precise movement of the watch movement. It is also possible to adjust the position of the bimetallic device 35 on the serge 33 to optimize its influence.
  • the compensating balance 61 comprises an uncut serge 63 connected by at least one arm 62 to a central opening 64.
  • said at least one bimetallic device 65 is mounted on said at least one arm 62 in order to modify the inertia of the compensating balance 61 depending on the temperature.
  • the bimetallic device 65 comprises a band with a cantilever block, the band being formed by a single first blade and a single second blade and which is attached to the upper surface of one of the arms 62 by means of one of the holes 66 formed on the arms 62.
  • the bimetallic devices 35 may be distributed on the upper and / or lower surface of one or more of the arms 62 by means of one or more of the holes 66. .
  • the bimetallic device mounted on the upper surface of one of the arms 62 has a plurality of first blades arranged to attach to a single second blade or, alternatively, that a plurality of second blades are arranged to attach to a single first blade.
  • the bimetallic devices 65 according to the invention are advantageously used to provide an auxiliary heat compensation at the balance to a resonator comprising a compensating hairspring. It is understood that, depending on the auxiliary compensation to be provided, the materials and the geometries used bimetallic device 65 and possibly the block 6 and / or the base 9 fixing and / or means 11, 13, 15, 17 abutment will be chosen to adjust the most accurate movement of the watch movement.
  • the invention relates to a compensating racket 71, 91 comprising at least one bimetallic device 75, 95 according to one of the preceding variants.
  • the bimetallic device 75, 95 according to the invention can be advantageously used to provide an auxiliary thermal compensation to a resonator by the racking with a very high accuracy.
  • the racket is used to change the diurnal walk of the watch, by lengthening or shortening the active length of the spiral of a spring balance resonator.
  • the racket is usually adjusted to rub on the cockroach.
  • the diurnal march of the watch is changed by turning the racket.
  • graduations are generally marked on the cock allow to estimate approximately the effect of retouching.
  • the compensating rack 71 has a gap i arranged to receive a spiral spring formed in an arm 72.
  • the arm 72 is rotatably mounted relative to an opening 74 and connected to said at least one bimetal device 75 to change the position of the gap i, that is to say the haphazard of the hairspring, depending on the temperature.
  • the bimetallic device 75 includes a concentrically extending U-shaped band which is formed by a single first blade and a single second blade.
  • the bimetallic device 75 is mounted between arm 72 supporting two pins 76, or alternatively a racket key, forming the gap i and a fixing ring 77 to the cockpit.
  • an end 78 of the strip is pivotally mounted on the arm 72 to force the latter to move during temperature changes.
  • the arm 72 and / or the pins 76 and / or part of the band of the bimetal device 75 and / or the opening 74 and / or the fixing ring 77 may be in one piece.
  • bimetallic devices 75 can be distributed between the arm 72 and the fixing ring 77, that is to say, for example, one between the opening 74 and the beginning of the pins 76 and one between the opening 74 and the fixing ring 77. It is also possible, similarly to the example of the figure 8 , that the bimetallic device 75 used comprises several first blades arranged to attach to a single second blade or, alternatively, that a plurality of second blades are arranged to attach to a single first blade.
  • the bimetallic devices 75 according to the invention are advantageously used to provide an auxiliary heat compensation at the level of the racket to a resonator comprising a compensating hairspring. It is understood that, depending on the auxiliary compensation to be provided, the materials and the geometries used bimetallic device 75 and, optionally, the block / feeder 6 and / or the fixing base 9 and / or means 11, 13, 15, 17 abutment, will be chosen to adjust the most precise movement of the watch movement. It is also possible to adjust the position of the bimetallic device 75 to optimize its influence.
  • the compensating rack 91 has a gap i arranged to receive a spiral spring formed in an arm 92.
  • the arm 92 is preferably mounted to rotate relative to an opening 94.
  • the size of the gap i is advantageously controlled. by said at least one bimetallic device 95 to change the gap i as a function of temperature.
  • the bimetallic device 95 comprises a U-shaped band which is formed by a single first blade and a single second blade.
  • the bimetallic device 95 is mounted on the arm 92 at 93 of these ends and has a first pin 96 at its other end.
  • a second pin 96 is mounted on the arm 92 opposite the first pin to form the gap i and a racquet tail 97 is mounted opposite the arm 92 relative to the opening to allow adjustment of the racket 91.
  • the arm 92 and / or the pins 96 and / or part of the band of the bimetallic device 95 and / or the opening 94 and / or the racket tail 97 may be one-piece.
  • bimetallic devices 95 may be distributed between the arm 92 and the racket tail 97, that is to say, for example, to include a second one between the opening 94 and the beginning of the pins 96. It is possible, similarly to the example of the figure 8 that the bimetallic device 95 used has a plurality of first blades arranged to attach to a single second blade or, alternatively, that a plurality of second blades are arranged to attach to a single first blade.
  • the bimetallic devices 95 according to the invention are advantageously used to provide an auxiliary heat compensation at the level of the racket to a resonator comprising a compensating hairspring. It is understood that, depending on the auxiliary compensation to be provided, the materials and the geometries used bimetallic device 95 and, optionally, the block / feeder 6 and / or the base 9 and / or fixing means 11, 13, 15, 17 abutment, will be chosen to adjust the most precise movement of the watch movement. It is also possible to adjust the position of the bimetallic device 95 to optimize its influence.
  • a bimetallic device of the type illustrated in FIG. figure 11 can be adapted not to change the position of a racket pin but the position of the pinning point of a spiral in temperature function. It is then understood that the bimetallic device would be mounted between a fixed point of the watch movement, like a bridge, and the outer curve of a hairspring so that the active length of the hairspring can be modified as a function of the temperature without having to use a racket .
  • the invention relates to a temperature sensor 81 comprising at least one bimetallic device 85 according to one of the preceding variants.
  • the bimetallic device 85 according to the invention can be advantageously used to measure the temperature with a very high accuracy.
  • the temperature sensor 81 may thus comprise a display 83 and an elastic device 87 for tracking the movement of said at least one bimetallic device in order to modify the position of the display 83 as a function of the temperature.
  • the bimetallic device 85 comprises a band formed by a single first blade and a single second blade and which is mounted to be in permanent contact with a probe 80 of the elastic displacement tracking device 87.
  • the probe 80 is integral with a pivot 82 intended to create a rotational movement B from the movements A of the bimetallic device 85.
  • the pivot 82 communicates its movement B to the return 84 pivotally mounted according to the rotation C via the spring 86 to to force the feeler 80 to always follow the surface of the bimetallic device 85.
  • the reference 84 meshes with the pinion 88 of the display in order to move the temperature display according to the rotation D, for example with a needle.
  • bimetallic devices 85 could be used to display an average temperature value via a differential. It is also possible, similarly to the example of the figure 8 , that the bimetallic device 85 used comprises several first blades arranged to attach to a single second blade or, alternatively, that a plurality of second blades are arranged to attach to a single first blade.
  • the bimetallic devices 85 according to the invention are advantageously used to provide a precision for measuring the temperature. It is understood that, depending on the accuracy of the measurement to be made, the materials and the geometries used bimetallic device 85 and, optionally, the block 6 and / or the base 9 and / or fixing means 11, 13, 15, 17 stop, will be chosen to adjust more precisely the operation of the temperature sensor. It is also possible to adjust the position of the bimetallic device 85 to optimize its use.
  • the present invention is not limited to the illustrated example but is susceptible of various variations and modifications that will occur to those skilled in the art.
  • organs of a timepiece are made of silicon.
  • any silicon-based member could be modified during manufacture to integrate a bimetallic device according to the invention such as, for example, the hairspring or the escapement,
  • the invention relates to a compensating hairspring comprising at least one bimetallic device.
  • the bimetallic device according to the invention can be advantageously used to provide an auxiliary thermal compensation to a resonator at the point of pitonnage with a very high accuracy.
  • the compensating hairspring could thus comprise an outer turn connected, in one-piece or not, to said at least one bimetallic device arranged to be fixed to a bridge in order to modify the active length of the compensating hairspring depending on the temperature.

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  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Micromachines (AREA)
  • Temperature-Responsive Valves (AREA)
EP16158884.3A 2016-03-07 2016-03-07 Dispositif bilame sensible aux variations de température Active EP3217228B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP16158884.3A EP3217228B1 (fr) 2016-03-07 2016-03-07 Dispositif bilame sensible aux variations de température
US15/422,882 US10976706B2 (en) 2016-03-07 2017-02-02 Bimetallic device sensitive to temperature variations
JP2017029753A JP2017161508A (ja) 2016-03-07 2017-02-21 温度変動を感知するバイメタルデバイス
CN201710128069.6A CN107168030B (zh) 2016-03-07 2017-03-06 对温度变化敏感的双金属装置
HK18102980.8A HK1243501A1 (zh) 2016-03-07 2018-03-01 對溫度變化敏感的雙金屬裝置
JP2018242286A JP6662995B2 (ja) 2016-03-07 2018-12-26 温度変動を感知するバイメタルデバイス

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16158884.3A EP3217228B1 (fr) 2016-03-07 2016-03-07 Dispositif bilame sensible aux variations de température

Publications (2)

Publication Number Publication Date
EP3217228A1 EP3217228A1 (fr) 2017-09-13
EP3217228B1 true EP3217228B1 (fr) 2019-08-28

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EP16158884.3A Active EP3217228B1 (fr) 2016-03-07 2016-03-07 Dispositif bilame sensible aux variations de température

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US (1) US10976706B2 (zh)
EP (1) EP3217228B1 (zh)
JP (2) JP2017161508A (zh)
CN (1) CN107168030B (zh)
HK (1) HK1243501A1 (zh)

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JP6602267B2 (ja) * 2016-06-16 2019-11-06 シチズン時計株式会社 テン輪の製造方法
EP3796102B1 (fr) 2017-12-22 2022-04-20 The Swatch Group Research and Development Ltd Procede de fabrication d'un balancier pour piece d'horlogerie
EP3667432B1 (fr) * 2018-12-13 2022-05-11 ETA SA Manufacture Horlogère Suisse Résonateur d'horlogerie comportant au moins un guidage flexible
JP2020169854A (ja) * 2019-04-02 2020-10-15 ソニー株式会社 時計、方位検出方法およびプログラム
USD922893S1 (en) * 2019-05-07 2021-06-22 Nivarox-Far Sa Watch component

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US20170255165A1 (en) 2017-09-07
HK1243501A1 (zh) 2018-07-13
JP2019066492A (ja) 2019-04-25
CN107168030B (zh) 2021-01-01
EP3217228A1 (fr) 2017-09-13
JP2017161508A (ja) 2017-09-14
CN107168030A (zh) 2017-09-15
JP6662995B2 (ja) 2020-03-11
US10976706B2 (en) 2021-04-13

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