EP4141580A1 - Resonatormechanismus eines uhrwerks, der mit haltemitteln des trägheitselements ausgestattet ist - Google Patents

Resonatormechanismus eines uhrwerks, der mit haltemitteln des trägheitselements ausgestattet ist Download PDF

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Publication number
EP4141580A1
EP4141580A1 EP21193559.8A EP21193559A EP4141580A1 EP 4141580 A1 EP4141580 A1 EP 4141580A1 EP 21193559 A EP21193559 A EP 21193559A EP 4141580 A1 EP4141580 A1 EP 4141580A1
Authority
EP
European Patent Office
Prior art keywords
inertial element
resonator mechanism
stop
inertial
oscillate
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
EP21193559.8A
Other languages
English (en)
French (fr)
Inventor
Dominique Lechot
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 EP21193559.8A priority Critical patent/EP4141580A1/de
Priority to US17/816,010 priority patent/US20230062088A1/en
Priority to JP2022123203A priority patent/JP7429736B2/ja
Priority to CN202211032838.XA priority patent/CN115729086A/zh
Publication of EP4141580A1 publication Critical patent/EP4141580A1/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
    • G04B27/00—Mechanical devices for setting the time indicating means
    • G04B27/004—Mechanical devices for setting the time indicating means having several simultaneous functions, e.g. stopping or starting the clockwork or the hands
    • 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
    • G04B17/32—Component parts or constructional details, e.g. collet, stud, virole or piton
    • 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

Definitions

  • the invention relates to a clockwork resonator mechanism provided with means for stopping the inertial element.
  • the invention also relates to a clock movement comprising at least one such resonator mechanism and/or a clock oscillator comprising at least one such resonator mechanism.
  • means are generally used for stopping the balance wheel to prevent it from oscillating, for example when it is desired to set the time of the movement.
  • These stop means are configured to block the movement of the pendulum by contact with it.
  • the pendulums generally have an annular shape, and the stopping means comprise a mobile stop which comes into contact with the periphery of the pendulum to stop it, when they are actuated.
  • the stopping means comprise a mobile stop which comes into contact with the periphery of the pendulum to stop it, when they are actuated.
  • stop means acting on the rotation shaft of the balance wheel to stop its movement, for example by blocking a counterstop arranged on the rotation shaft.
  • the inertial element can be provided with an elongated body, which oscillates by means of one, or preferably several flexible blades.
  • the invention proposes to design new stopping means capable of operating with any type of inertial element, but also with annular inertial elements conventionally used in clock oscillators.
  • the invention relates to a clockwork resonator mechanism, comprising a structure and an anchoring block from which is suspended at least one inertial element arranged to oscillate according to a first degree of freedom in rotation RZ around a pivot axis extending in a first direction Z, said inertial element being configured to be subjected to return forces exerted by return means configured to cause the inertial element to oscillate, the mechanism comprising means for stopping the inertial element actuated on demand to prevent oscillations of the inertial element.
  • the oscillator mechanism is remarkable in that the stop means are configured to move the inertial element between a pivoting position and a stop position in which the inertial element cannot oscillate.
  • the inertial element is not only mobile in rotation to be able to oscillate, but also in translation to put it in a position in which it is blocked and can no longer oscillate.
  • This new type of stopping means avoids having to take into account the geometry of the inertial element. They can be adapted to particular oscillating systems, for example with flexible guides, which do not include an annular balance, but an elongated inertial element. In addition, these stop means can also be used for conventional annular balances.
  • the stop means comprise a stop abutment against which the inertial element is in contact in the stop position, the inertial element no longer being in contact with the stopper in pivot position.
  • the inertial element is movable in translation against the stopper.
  • the stop means are configured to push the inertial element against the stopper.
  • the inertial element is configured to oscillate at least partly around a first pivot stud of the structure, the first pivot stud being configured to allow the pivoting of the element inertial about an axis passing through the first pivot pin.
  • the first pivot stud comprises the stopper.
  • the inertial element is configured to slide along the first pivot stud to come into contact with the stopper.
  • the stop means comprise actuating means arranged to move the inertial element against the stopper.
  • the actuating means comprise a support body configured to push the inertial element.
  • the actuating means comprise a lever configured to exert a force on the support body, so as to move the inertial element.
  • the support body is flexible.
  • the lever is configured to lift said support body to move the inertia element.
  • the actuating means comprise a movable winding stem to actuate the lever.
  • the return means comprise a flexible pivot comprising a plurality of substantially longitudinal elastic blades, each fixed, at a first end to said anchoring block, and at a second end to said inertial element, each said elastic blade being deformable essentially in an XY plane perpendicular to said first direction Z.
  • the invention also relates to a clock movement comprising at least one such resonator mechanism and/or a clock oscillator comprising at least one such resonator mechanism.
  • the invention relates to a clockwork resonator mechanism, which constitutes for example a variant of the resonators described in the application CH00518/18 or request EP18168765.8 in the name of ETA Manufacture Horlogère Suisse, incorporated here by reference, and whose characteristics the person skilled in the art will know how to combine with those specific to the present invention.
  • this clockwork resonator mechanism 1 comprises a structure 10 and an anchoring block 30, from which is suspended at least one inertial element 2 arranged to oscillate according to a first degree of freedom in rotation RZ about a pivot axis D s extending in a first direction Z.
  • the return means are a flexible pivot 200 comprising a plurality of substantially longitudinal elastic blades 3, each fixed, at a first end to the anchor block 30, and at a second end to the inertial element 2
  • the resonator mechanism 1 comprises two crossed elastic blades 3, each blade 3 being provided with a plurality of ribs 13 on either side of each face of the blade 3.
  • An elastic blade 3 is essentially deformable in an XY plane perpendicular to the first Z direction.
  • the inertial element 2 can oscillate in the XY plane, the first direction Z being perpendicular to the XY plane.
  • the inertial element 2 comprises a clip 20 on which the elastic blades 3 are fixed.
  • the inertial element 2 further comprises a rocker arm 15 assembled with the attachment 20.
  • the rocker arm 15 is elongated in the shape of a substantially symmetrical bone.
  • the inertial element 2 is configured to oscillate at least partly around a first pivot stud 5 of the structure 10, the pivot stud 5 being configured to allow the pivoting of the inertial element 2 around it.
  • the rocker 15 includes a central hole 16 to insert the first pivot pin 5 therein.
  • the central hole 16 has a larger diameter than the first pin 5 in order to allow the rocker 15 to turn around it.
  • the inertial element 2 further comprises an anchor 25 assembled under the attachment 20, the anchor 25 being centered on the rocker arm 20 and the central hole 16.
  • the anchor 25 comprises two arms 17, 18 in arcs of a circle whose ends are configured to cooperate with an escape wheel, not shown in the figures.
  • the escapement can be of the mechanical type or of the magnetic type.
  • a second pivot pin 19 of the structure 10 is inserted into the anchor 25 along the axis of rotation of the inertial element 2.
  • the anchor 25 comprises a second hole 21 in which the second pin 19 is inserted, the second hole 21 being wider than the second stud 19 to avoid any contact between the anchor 25 and the second hole 21.
  • the second stud 19 is arranged in the axis of the first stud 5.
  • the inertial element 2 surrounds the first 5 and the second stud 19, which are inserted, one in the balance 15 and the other in the anchor 25, so as to allow the oscillation of the inertial element 2 along an axis of rotation passing through the two pads 5, 19.
  • the amplitude of oscillation of the inertial element 2 in the plane of oscillation is for example included in an interval ranging from 20 to 40°.
  • the oscillation frequency is for example greater than ten Hz.
  • the second stud 19 has a vertical stop function in the direction Z, in the event of impact, to prevent the elastic strips 3 or the strips of the translation tables 31, 32 from breaking.
  • the second stud 19 has a protrusion or widening at its base to retain the inertial element 2. Thus, if the mechanism is shaken violently, the movement of the inertial element 2 is limited in the direction Z by the second stud 19.
  • the mechanism includes means 50 for stopping the inertial element 2, which can be actuated on demand to prevent the oscillations of the inertial element 2.
  • the stopping means 50 are configured to move the element inertial 2 between a pivoting position in which it can oscillate freely, and a stop position in which the inertial element 2 cannot oscillate because it is constrained.
  • the resonator mechanism 1 comprises a stopper 6 against which the inertial element 2 comes into contact in the stop position in order to prevent any oscillation.
  • the first stud 5 includes the stopper 6, which is for example formed from an extra thickness at its periphery, or from an enlargement of the stud 5 at its base.
  • the inertial element 2 is thus configured to slide along the pivot block 5 to come into contact with the stop 6, when it is desired to stop its oscillations.
  • the mobile element 2 which is mobile in translation in the direction Z
  • the mobile element 2 is pushed by inducing a force under the anchor 25.
  • the flexibility of the two elastic blades 3 allows the movement of the inertial element 2 in the direction Z without risk of wear or damage to the blades 3.
  • the movement of the inertial element 2 takes place over a very short distance to avoid significant bending of the elastic blades 3.
  • the mobile element 2 comes in contact with the stop 6 which is located above it in the direction Z.
  • the stop means 50 are configured to push the movable element 2 against this stop stop 6.
  • the stop means 50 comprise actuation means 40 arranged to push the inertial element 2 against the stopper 6.
  • the actuation means 40 comprise a support body 22, configured to be able to be engaged with the inertial element 2, the support body 22 serving as a means of displacement of the inertial element 2.
  • the support body 22 is elongated to be able to be actuated remotely.
  • the support body 22 is provided at one end with a fork 36 surrounding the second stud 19, so as to be able to slide along said second stud 19. In the pivoting position, the support body 22 and the fork 36 are not in contact with the inertial element 2.
  • the support body 22 is movable along the second stud 19 to be able to come into contact with the inertial element 2, and push it towards the stopper 6.
  • the support body 22 and the fork 36 are in contact with the inertial element 2.
  • the support body 22 is for example a strip, preferably metallic, provided with the fork 36 at its end to enclose the second stud 19 arranged under the anchor 25.
  • the support body 22 is flexible in order to be able to apply a force with precision.
  • a force is applied to the slat, it bends, but transmits part of the force under the inertial element 2, in order to lift it.
  • the actuating means 40 produce a thrust along the axis of rotation of the inertial element 2, perpendicular to the latter.
  • the support body 22 is arranged parallel to the inertial element 2.
  • the actuating means 40 comprise a lever 23 configured to bear against said support body 22 to move the inertial element 2.
  • the lever 23 comprises an elongated body part of which bears under the support body 22 in order to push it upwards when the actuating means 40 are actuated.
  • Actuating means 40 further comprises a winding stem 24 for actuating lever 23.
  • Stem 24 has a cylindrical shape and can be moved along its longitudinal axis when actuated.
  • the lever 23 here has an angled arm shape, with a first elbow 26 in the middle of the lever 23 and a second elbow 27 before a free end 28.
  • the free end is in contact with the support body 22.
  • the free end 28 has a triangular shape tapering towards the end.
  • the free end 28 is positioned under the support body 22. Thus, by moving the free end 28 under the support body 22, the support body 22 is lifted by a thicker portion of the free end 28.
  • the lever 23 comprises a second end 29 in contact with the rod 24, the second end 29 being retained between two guide ribs 31, 32 extending around the rod 24.
  • the rod 24 is actuated, pulling it or by pushing it along its axis, the second end 29 is pulled or pushed.
  • the lever 23 comprises a pivot 33 around which it can rotate, the pivot 33 being formed by a screw passing through the lever 23.
  • the pivot 33 being formed by a screw passing through the lever 23.
  • the flexible suspension 300 comprises, between the anchor block 30 and a first intermediate mass 303, which is fixed to the structure 10 directly or via a flexible plate 301 in the first direction Z, a transverse translation table 32 with flexible guidance, and which comprises transverse blades 320, rectilinear and extending in the second direction X and in symmetry around a transverse axis D2 crossing the pivot axis D.
  • the flexible suspension 300 further comprises, between the anchor block 30 and a second intermediate mass 305, a longitudinal translation table 31 with flexible guidance, and which comprises longitudinal strips 310 which are rectilinear and extend in the third direction Y and in symmetry around a longitudinal axis D1 crossing the pivot axis D.
  • the transverse translation table 32 with flexible guidance comprises transverse blades 320 rectilinear and extending along the second direction X and in symmetry around the transverse axis D2 crossing the pivot axis D.
  • the longitudinal axis D1 crosses the transverse axis D2, and in particular the longitudinal axis D1, the transverse axis D2, and the pivot axis D are concurrent.
  • the longitudinal translation table 31 and the transverse translation table 32 each comprise at least two blades, each blade being characterized by its thickness in the second direction X when the blade or rod extends in the third direction Y or vice versa, by its height in the first direction Z, and by its length in the direction in which the blade or rod extends, the length being at least five times greater than the height, the height being at least as great as the thickness, and more particularly at least five times greater than this thickness, and more particularly still at least seven times greater than this thickness.
  • the transverse translation table 32 comprises at least two transverse flexible blades, parallel to each other and of the same length. In the embodiment of the figures, the translation tables have four flexible blades.
  • the invention also relates to a clockwork oscillator mechanism comprising such a clockwork resonator mechanism 1, and an escapement mechanism, not shown in the figures, which are arranged to cooperate with each other.
  • the invention also relates to a timepiece movement 10 comprising at least one such oscillator mechanism and/or at least one resonator mechanism 1.
  • the present invention is not limited to the example illustrated but is susceptible to various variants and modifications which will become apparent to those skilled in the art.
  • the inertial element 2 is raised, but other embodiments are possible, for example an embodiment in which the inertial element is retained in the pivoting position, and which slides downwards in a stop position.
  • a spiral spring can be used instead of the pivot with flexible blades.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Transmission Devices (AREA)
EP21193559.8A 2021-08-27 2021-08-27 Resonatormechanismus eines uhrwerks, der mit haltemitteln des trägheitselements ausgestattet ist Pending EP4141580A1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP21193559.8A EP4141580A1 (de) 2021-08-27 2021-08-27 Resonatormechanismus eines uhrwerks, der mit haltemitteln des trägheitselements ausgestattet ist
US17/816,010 US20230062088A1 (en) 2021-08-27 2022-07-29 Horological resonator mechanism equipped with inertial element stopping means
JP2022123203A JP7429736B2 (ja) 2021-08-27 2022-08-02 慣性要素を止める手段を備える計時器用共振機構
CN202211032838.XA CN115729086A (zh) 2021-08-27 2022-08-26 配备有惯性元件止动装置的钟表谐振器机构

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21193559.8A EP4141580A1 (de) 2021-08-27 2021-08-27 Resonatormechanismus eines uhrwerks, der mit haltemitteln des trägheitselements ausgestattet ist

Publications (1)

Publication Number Publication Date
EP4141580A1 true EP4141580A1 (de) 2023-03-01

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Application Number Title Priority Date Filing Date
EP21193559.8A Pending EP4141580A1 (de) 2021-08-27 2021-08-27 Resonatormechanismus eines uhrwerks, der mit haltemitteln des trägheitselements ausgestattet ist

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Country Link
US (1) US20230062088A1 (de)
EP (1) EP4141580A1 (de)
JP (1) JP7429736B2 (de)
CN (1) CN115729086A (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3111807A (en) * 1961-05-18 1963-11-26 Ebauches Sa Electric clock or watch having an oscilatory regulator
CH704783A1 (fr) * 2011-04-14 2012-10-15 Complitime Sa Mouvement de pièce d'horlogerie.
EP3561607A1 (de) * 2018-04-23 2019-10-30 ETA SA Manufacture Horlogère Suisse Stossdämpfungsschutz eines resonatormechanismus mit flexibler drehführung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3111807A (en) * 1961-05-18 1963-11-26 Ebauches Sa Electric clock or watch having an oscilatory regulator
CH704783A1 (fr) * 2011-04-14 2012-10-15 Complitime Sa Mouvement de pièce d'horlogerie.
EP3561607A1 (de) * 2018-04-23 2019-10-30 ETA SA Manufacture Horlogère Suisse Stossdämpfungsschutz eines resonatormechanismus mit flexibler drehführung

Also Published As

Publication number Publication date
JP7429736B2 (ja) 2024-02-08
CN115729086A (zh) 2023-03-03
US20230062088A1 (en) 2023-03-02
JP2023033149A (ja) 2023-03-09

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