EP4325302A1 - Regulierorgan für uhr mit spiralfeder mit druckausgleichsmitteln - Google Patents

Regulierorgan für uhr mit spiralfeder mit druckausgleichsmitteln Download PDF

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Publication number
EP4325302A1
EP4325302A1 EP22191188.6A EP22191188A EP4325302A1 EP 4325302 A1 EP4325302 A1 EP 4325302A1 EP 22191188 A EP22191188 A EP 22191188A EP 4325302 A1 EP4325302 A1 EP 4325302A1
Authority
EP
European Patent Office
Prior art keywords
regulating member
member according
ribbon
elastic
elastic element
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.)
Pending
Application number
EP22191188.6A
Other languages
English (en)
French (fr)
Inventor
Gianni Di Domenico
Baptiste Hinaux
Mohammad Hussein Kahrobaiyan
Jean-Luc Helfer
Pascal Winkler
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.)
Swatch Group Research and Development SA
Original Assignee
Swatch Group Research and Development 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 Swatch Group Research and Development SA filed Critical Swatch Group Research and Development SA
Priority to EP22191188.6A priority Critical patent/EP4325302A1/de
Priority to JP2023116481A priority patent/JP2024028142A/ja
Priority to CN202310976804.4A priority patent/CN117590726A/zh
Priority to US18/450,028 priority patent/US20240061377A1/en
Publication of EP4325302A1 publication Critical patent/EP4325302A1/de
Pending 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
    • G04B17/04—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
    • 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
    • G04B17/24—Compensation of mechanisms for stabilising frequency for the effect of variations of atmospheric pressure
    • 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
    • G04B17/045—Oscillators acting by spring tension with oscillating blade springs
    • 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
    • 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

Definitions

  • the invention relates to a spiral spring regulating member provided with pressure compensation means.
  • the invention also relates to a clock movement comprising such a regulating member.
  • the sprung balance constitutes the time base of the watch. It is also called a resonator or regulating organ.
  • a spiral spring plays the role of an elastic return element for the inertial element that constitutes a balance wheel. This balance wheel is guided in rotation by pivots, which generally rotate in plain ruby bearings.
  • a frequency is chosen for the mechanical resonator, which is determined to obtain a predefined rate for the clock movement.
  • such a mechanical resonator may be subject to disturbances caused by changes in external parameters, which generate variations in frequency of the resonator. These parameters are for example temperature, pressure, humidity, or gravity.
  • the variation in frequency of the resonator results in an error in the measurement of time and therefore in the running of the clock movement.
  • the document CH 704687 describes a regulating member comprising a spiral spring and a member for correcting the position of the eyebolt to correct deformations of the spiral spring due to temperature.
  • the aim of the present invention is to overcome all or part of the drawbacks cited above by proposing a watchmaking regulating body with a spiral spring provided with pressure compensation means, which are precise and adapted to a spiral spring.
  • the invention relates to a regulating member for a clock movement comprising an oscillating mass, for example a balance wheel, a spiral spring comprising a flexible ribbon wound on itself in several turns, the ribbon having a rigidity predefined to allow the oscillating mass to perform a rotary oscillatory movement, the ribbon comprising an external end.
  • an oscillating mass for example a balance wheel
  • a spiral spring comprising a flexible ribbon wound on itself in several turns
  • the ribbon having a rigidity predefined to allow the oscillating mass to perform a rotary oscillatory movement
  • the ribbon comprising an external end.
  • the regulating member comprises an elastic device for compensating the external pressure, connecting the external end of the ribbon to a first support which is immobile relative to the clockwork movement, the elastic compensation device being configured to adapt its stiffness as a function of external pressure in order to compensate for the effect of external pressure on the regulating member.
  • the prestressing means exert a variable force or torque on the elastic element of the elastic compensation device as a function of the pressure, so that the regulating member substantially maintains a precise course despite significant modifications of pressure.
  • the prestressing means modify the force or the torque exerted on the elastic element, so that the stiffness of the assembly comprising the elastic element and the spiral spring is modified.
  • the effective stiffness of the resonator includes the stiffness of the ribbon and the stiffness of the elastic element.
  • the variable force or torque allows the elastic element to be pre-stressed, preferably without pre-stressing the tape and without moving the end of the tape. By pre-stressing the elastic element, its rigidity changes, while the rigidity of the ribbon remains unchanged, since it is not pre-stressed and its end does not move.
  • the rigidity of the resonator (ribbon stiffness and rigidity of the elastic element) changes, which consequently modifies the operation of the resonator.
  • the elastic element being preferably more rigid than the ribbon, the share of the flexibility of the elastic element in the overall flexibility is less than that of the ribbon. Consequently, a modification of the rigidity of the elastic element modifies the rigidity of the entire resonator, and consequently fine-tunes its operation, which makes it possible to precisely adjust the frequency of our base of time. We thus obtain great precision in maintaining walking depending on the pressure.
  • the elastic compensation device comprises an elastic element arranged between the external end of the ribbon and the immobile support, as well as prestressing means for applying a variable force or torque on the elastic element depending on external pressure.
  • the prestressing means comprise a spring part connected to the elastic element, the spring part transmitting the force or the torque to the elastic element.
  • the prestressing means comprise an aneroid capsule whose volume varies as a function of the external pressure, so as to transmit a variable force or torque as a function of the external pressure.
  • the aneroid capsule comprises a movable wall and a stationary wall connected by at least one spring.
  • the spring part comprises a first flexible blade connected to the elastic element.
  • the spring part comprises a translation table connected to the first flexible blade, the aneroid capsule being in contact with the translation table.
  • the elastic part comprises a first movable element connected to the first flexible blade, and a second movable element, the first movable element and the second movable element being connected by a pair of parallel flexible blades .
  • the spring part comprises a second flexible blade connecting the second mobile element to the aneroid capsule.
  • the elastic element comprises a suspended point body and a pair of uncrossed blades connecting the suspended point body to the first immobile support.
  • the prestressing means are connected to the suspended point body to exert the force or the torque on the suspended point body.
  • the regulating member comprises means for adjusting the prestressing means to apply a variable force on the prestressing means, for example on the first elongated movable element.
  • the regulating member extends substantially in the same plane, except for the oscillating mass.
  • the invention also relates to a watch movement comprising such a regulating member.
  • THE figures 1 and 2 each represent an embodiment of a regulating member 1, 10 according to the invention, the regulating member 1, 10 comprising an elastic device 50 configured to compensate for a variation in pressure exerted on the regulating member 1, 10.
  • Such regulating organs 1, 10 are intended to be arranged in a clockwork movement to regulate it.
  • the regulating member 1, 10 comprises a spiral spring provided with a flexible ribbon 2 wound on itself in several turns.
  • the flexible ribbon 2 comprises an external end 9 and an internal end 8.
  • the regulating member 1, 10 comprises an oscillating mass, for example an annular balance, not shown in the figures, which is connected to the internal end 8 of the ribbon 2, the ribbon 2 having a predefined rigidity to allow the oscillating mass to perform a rotary oscillatory movement.
  • the oscillating mass comprises an axial rotation shaft, the internal end 8 of the ribbon 2 being connected to said shaft.
  • the regulating member 1, 10 extends substantially in the same plane, except for the oscillating mass, which oscillates in a parallel plane, above the spiral spring.
  • the regulating member 1, 10 comprises an elastic device 50 for compensating an external parameter configured to adapt the stiffness of the elastic element 5 as a function of the pressure in order to compensate for the effect of the pressure on the regulating organ 1, 10.
  • the elastic compensation device 50 is configured to adapt its stiffness according to variations in the surrounding pressure in order to to compensate for the effect of these variations on the spiral spring.
  • the elastic compensation device 50 preferably has a stiffness greater than the ribbon 2.
  • the elastic device 50 comprises an elastic element 5 connecting the external end 9 of the ribbon 2 to a stationary support 7 relative to the watch movement, for example to a fixed plate.
  • the elastic device 50 further comprises prestressing means 6 for applying a variable force or torque to the elastic element 5 as a function of the external parameter.
  • the elastic element 5 here comprises a suspended point body 3 and a pair of uncrossed blades 4 connecting the suspended point body 3 to the immobile support 7.
  • the suspended point body 3 is for example a cylindrical body of height substantially equal to the diameter, the blades uncrossed 4 moving away from the suspended point body 3 to the immobile support 7.
  • the elastic element 5 is arranged in the extension of the flexible ribbon 2, the spiral spring and the elastic element 5 being adjacent, but avoiding contact during the oscillation of the oscillating mass.
  • the prestressing means 6 are configured to exert the force or torque on the suspended point body 3.
  • the stiffness of the elastic element is modified, because the prestressing means 6 modify the stiffness of the uncrossed blades 4.
  • the prestressing means 6 comprise a spring part provided with a single flexible blade 11 connected to the suspended point body 3.
  • the single flexible blade 11 extends in the axis of the elastic element, tangentially to the spiral spring, and is slightly offset from the external end 9.
  • the spring part is further configured to experience a variable force or torque, which is transmitted to the elastic element 5.
  • the spring part of the prestressing means 6 comprises a translation table 33 provided with a first movable element 12 in the shape of an L and a second immobile support 18 relative to the movement.
  • the first movable element 12 is connected to the single flexible blade 11 by one end of a first arm of the L.
  • the second arm of the L includes a rounded projection 53 on the external side.
  • the translation table 33 comprises two substantially parallel flexible blades 14 connecting the first movable element 12 to the second immobile support 18.
  • the prestressing means 6 comprise an aneroid capsule.
  • Such a capsule is generally used to measure atmospheric pressure.
  • the capsule comprises a space at least partly empty of air, and comprises a spring-type elastic return element in the space to retain a movable wall of the capsule.
  • the aneroid capsule includes a variable volume depending on the external pressure.
  • the aneroid capsule comprises a movable wall 13 and a stationary wall 15.
  • a sealed enclosure not shown in the figures, makes it possible to create at least a partial vacuum inside the movable 13 and stationary walls 15.
  • the stationary wall 15 is stationary with respect to the movement, and is for example integral with a plate or a fixed plate bridge.
  • the immobile wall 15 here has a schematic parallelepiped shape.
  • the movable wall 13 also has a schematic parallelepiped shape, the movable wall 13 being arranged opposite the immobile wall 15.
  • the aneroid capsule further comprises a spring 16 connecting the movable 13 and immobile 15 walls, which form the elastic return element of the aneroid capsule.
  • the spring 16 is arranged between the movable 13 and stationary 15 walls.
  • the spring 16 extends, particularly when the pressure drops, or contracts, particularly when the pressure increases. Thus, it brings the movable wall 13 closer to or further from the immobile wall 15.
  • the spring part of the prestressing means 6 is connected to the aneroid capsule, the spring part transmitting the force or torque of the aneroid capsule to the point body 3 of the elastic element 5.
  • the function of the translation table 33 is to transform the spacing distance of the capsule into a constraint force for the point body 3.
  • the prestressing means 6 exert a variable thrust force on the elastic element 5. Consequently, the stiffness of the elastic element 5 varies, and makes it possible to adapt the operation of the balance to the external pressure conditions to maintain the precision of the regulating organ.
  • the movable wall 13 approaches the immobile wall 15. This rimpedement causes a reduction in the thrust force on the point body 3, which is exerted by the prestressing means 6. Thus, the stiffness of the elastic element 5 is increased.
  • the regulating member 10 comprises a spiral spring, an oscillating mass (not shown in the figure), an elastic element 5, and a first flexible blade 11 identical to the first embodiment.
  • the spring part of the prestressing means 6 comprises a first elongated movable element 22, connected to the flexible blade 11 and arranged in its extension.
  • the spring part comprises a first pair of parallel flexible blades 25 arranged on the same side, and connects the first movable element 22 to a second movable element 28.
  • the second movable element 28 is connected laterally to an aneroid capsule 15 by a second flexible blade 21 substantially parallel to the first movable element 22 in the rest position of the regulating member 10.
  • a second pair of parallel flexible blades 26 connects the second movable element 28 to a third stationary element 27 relative to the watch movement.
  • the second pair of parallel flexible blades 26 and the third stationary element 27 being arranged in series with the second pair of parallel flexible blades 25 and the second movable element 28.
  • the third stationary element 27 is for example integral with a fixed plate.
  • Adjustment means such as a screw, can be added to exert a force 59 on the first movable element 22.
  • the adjustment means make it possible to adjust the sensitivity of the prestressing means 6 to pressure.
  • the second flexible blade 21 transmits a movement to the second movable element 28, which transmits it to the first movable element 22 by the second pair of parallel flexible blades 25
  • the first movable element 22 is guided by the first translation table 33 to transmit the force or torque to the elastic element 5 through the first flexible blade 11.
  • the variation in pressure will cause a variation in volume of the aneroid capsule 15, and therefore a modification of the stiffness of the elastic element 5 and the operation of the regulating member 10.
  • the invention also relates to a watch movement, not shown in the figures, the movement comprising a rotary regulating member 1, 10 as described above.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Springs (AREA)
EP22191188.6A 2022-08-19 2022-08-19 Regulierorgan für uhr mit spiralfeder mit druckausgleichsmitteln Pending EP4325302A1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP22191188.6A EP4325302A1 (de) 2022-08-19 2022-08-19 Regulierorgan für uhr mit spiralfeder mit druckausgleichsmitteln
JP2023116481A JP2024028142A (ja) 2022-08-19 2023-07-18 ひげぜんまいを有し、圧力補償手段を備える測時器調整部材
CN202310976804.4A CN117590726A (zh) 2022-08-19 2023-08-04 设有压力补偿装置的具有游丝的钟表调速构件
US18/450,028 US20240061377A1 (en) 2022-08-19 2023-08-15 Horological regulating member with balance spring provided with pressure-compensating means

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22191188.6A EP4325302A1 (de) 2022-08-19 2022-08-19 Regulierorgan für uhr mit spiralfeder mit druckausgleichsmitteln

Publications (1)

Publication Number Publication Date
EP4325302A1 true EP4325302A1 (de) 2024-02-21

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Application Number Title Priority Date Filing Date
EP22191188.6A Pending EP4325302A1 (de) 2022-08-19 2022-08-19 Regulierorgan für uhr mit spiralfeder mit druckausgleichsmitteln

Country Status (4)

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US (1) US20240061377A1 (de)
EP (1) EP4325302A1 (de)
JP (1) JP2024028142A (de)
CN (1) CN117590726A (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR410898A (fr) * 1909-12-14 1910-06-01 Frederic Ecaubert Perfectionnements apportés aux régulateurs d'échappement pour horlogerie
CH704687A1 (fr) 2011-03-23 2012-09-28 Lvmh Swiss Mft Sa Organe réglant pour pièce d'horlogerie.
EP4009115A1 (de) * 2020-12-02 2022-06-08 Omega SA Spiralfeder für resonatormechanismus eines uhrwerks, der mit mitteln zum ausgleichen der starrheit ausgestattet ist

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR410898A (fr) * 1909-12-14 1910-06-01 Frederic Ecaubert Perfectionnements apportés aux régulateurs d'échappement pour horlogerie
CH704687A1 (fr) 2011-03-23 2012-09-28 Lvmh Swiss Mft Sa Organe réglant pour pièce d'horlogerie.
EP4009115A1 (de) * 2020-12-02 2022-06-08 Omega SA Spiralfeder für resonatormechanismus eines uhrwerks, der mit mitteln zum ausgleichen der starrheit ausgestattet ist

Also Published As

Publication number Publication date
CN117590726A (zh) 2024-02-23
JP2024028142A (ja) 2024-03-01
US20240061377A1 (en) 2024-02-22

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