US3782209A - Mechanical resonator of rotation - Google Patents

Mechanical resonator of rotation Download PDF

Info

Publication number
US3782209A
US3782209A US00234571A US3782209DA US3782209A US 3782209 A US3782209 A US 3782209A US 00234571 A US00234571 A US 00234571A US 3782209D A US3782209D A US 3782209DA US 3782209 A US3782209 A US 3782209A
Authority
US
United States
Prior art keywords
oscillation
plane
sections
respect
structure according
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.)
Expired - Lifetime
Application number
US00234571A
Other languages
English (en)
Inventor
R Favre
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.)
Movado Watch Co SA
Original Assignee
Fabriques Movado
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 Fabriques Movado filed Critical Fabriques Movado
Application granted granted Critical
Publication of US3782209A publication Critical patent/US3782209A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • G04B17/045—Oscillators acting by spring tension with oscillating blade springs
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/08—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically
    • G04C3/10—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means
    • G04C3/101—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means constructional details
    • G04C3/102—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means constructional details of the mechanical oscillator or of the coil
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/15—Intermittent grip type mechanical movement
    • Y10T74/1526—Oscillation or reciprocation to intermittent unidirectional motion
    • Y10T74/1553—Lever actuator
    • Y10T74/1555—Rotary driven element

Definitions

  • ABSTRACT A mechanical resonator of rotation, particularly for use in a timepiece, comprising an oscillatory mass having an axis of symmetry, a support, spring means connecting said mass to said support for oscillation of the latter about a rotational axis substantially coinciding with said axis of symmetry, said spring means including leaf springs consisting of rectilinear active sections interconnected by connecting elements adapted to be very rigid with respect to the effective stresses of oscillation and determining the useful length of said active sections; preferably, said springs are obtained by suitably folding single cut out pieces.
  • the present invention relates to a mechanical resonator of rotation, particularly for use in a timepiece.
  • the resonator described in my prior US. Pat. No. 3,528,308 comprises, in combination, an oscillatory mass having an axis of symmetry perpendicular to a predetermined plane, a support, spring means connecting said mass to said support for oscillation of the latter about a rotational axis substantially coinciding with said axis of symmetry, said spring means including at least one leaf spring having a width substantially greater than its thickness and arranged with its widthwise faces perpendicular to said predetermined plane, said leaf spring being secured at one end to said support and at its other end to said mass, said leaf spring including elongate arm portions extending generally radially with respect to said axis and in closely spaced opposition to each other in sideby-side relation in a direction normal to said axis whereby to resist both radial and axial displacement of said mass with respect to its rotational axis under shock loading conditions.
  • the active portion of the spring or springs consists of rectilinear or substantially rectilinear sections, interconnected by strongly curvilinear, hair-pinshaped sections.
  • the curvilinerar active sections have a double drawback:
  • connecting elements presenting a strong rigidity with respect to the effective stresses of oscillation, in such a manner that these connecting elements practically do not participate in the useful elastic deformations of the system.
  • the present invention just relates to a resonator of the type referred to, described in the above-mentioned patent, this resonator being broadly characterized in that its elastic structure comprises springs consisting of rectilinear active sections interconnected by connecting elements adapted to be relatively very rigid with respect to the effective stresses of oscillation and determining in a precise manner the useful length of the active sections, in such a manner that only the active sections, of a well determined length, practically intervene in the process of elastic deformation of oscillation.
  • FIG. 1 is a view of a plan cutting out of a spring according to the first embodiment, before folding.
  • FIG. 2 is a view of the folded spring, projected onto a plane parallel to the plane of oscillation.
  • FIG. 3 is a view of the folded spring, projected onto a plane perpendicular to the plane of oscillation.
  • FIGS. 4 to 6 are corresponding views of the spring ac-- cording to the second embodiment. I
  • FIG. 1 illustrates in' a plan view the three rectilinear sections 1, 2 and 3 which will constitute the only active parts of the folded spring.
  • the intermediary connecting elements are shown as at 4 and 5, whereas the end connecting elements are shown as at 6 and 7.
  • the tongue 8 is adapted for carrying a pawl serving for converting the reciprocating motion of oscillation into a unidirectional rotating movement through the intermediary of a conventional ratchet wheel (not shown).
  • FIGS. 2 and 3 are two orthogonal views of the spring folded along the dotted lines of FIG. 1, all of the foldings being made at right angles, except that of the pawlholder 8, which has to be adapted to the operation geometry.
  • the active sections 1, 2 and 3 are viewed parallel to one another in FIG. 2, which is a projection onto the plane of oscillation, whereas they are partially superposed in FIG. 3, which is perpendicular to the plane of oscillation.
  • the connecting elements 4 and 5 are rigidified with respect to the stresses of oscillation due to the orientation of the adjacent foldings, which are here inclined at 45 with respect to the plane of oscillation, this orientation being clearly seen in FIG. 3.
  • This inclined arrangement enables the connecting elements 4 and 5 to oppose also a high resistance to the parasitic stresses perpendicular to the plane of oscillation, which would not be the case if the connecting elements were disposed so as to be situated in the plane of oscillation.
  • the end connecting elements 6 and 7 have to render possible the fixing of the spring by welding. To this end, these elements are folded so as to be situated in the plane of oscillation, this enabling .to make a tangential welding practically without any static constraint of the spring, this being an important condition for keeping its chronometric performances.
  • FIG. 4 illustrates in a plan view a spring according to the second embodiment, before folding.
  • This spring includes the three rectilinear sections 9, l0 and 11 which will constitute the only active parts of the folded spring.
  • the intermediary connecting elements are shown as at 12 and 13, whereas the end connecting elements are shown as at 14 and 15.
  • the tongue 16 serves for fixing a pawl adapted to convert the oscillation motion into a unidirectional rotary motion through the intermediary of a conventional ratchet wheel.
  • FIGS. 5 and 6 are two orthogonal views of the spring folded along the dotted lines of FIG. 4, all of the foldings being made at right angles, except that of the pawlholder 16.
  • the active sections 9, l0 and 11 are viewed parallel to one another in FIG. 5, which is a projection onto the plane of oscillation, whereas they are viewed partially superposed in FIG. 6, which is perpendicula to the plane of oscillation.
  • the connecting elements 12 and 13 are situated in the plane of oscillation, so that they oppose a maximum resistance to the useful stresses of oscillation.
  • the end connecting elements 14 and 15 have to permit the fixing of the spring by welding. To this end, these elements are folded so as to be situated in the plane of oscillation, thus rendering possible a tangential welding practically without any static constraint of the spring, which is an important condition for keeping its chronometric performances.
  • the complete elastic structure of a resonator involves the use of eight elementary springs such as described above, namely fou-r springs for each oscillatory mass.
  • An elastic structure for use'in a mechanical resonator of rotation between the angularly displaceable mass of said resonator and a stationary point radially inward of said mass comprising: a flat leaf spring having a width substantially exceeding its thickness and consisting of retilinear active sections interconnected by planar connecting sections extending the distance between said active sections and disposed in a plane substantially at a right angle with respect to the planes of said active sections, said connecting sections being relatively very rigid with respect to the effective stresses of oscillation and determining the functional length of the active sections, whereby only the active sections of said determined functional length substantially participate in the process of elastic deformation of oscillation, said active sections being oscillatable in a direction generally perpendicular to the planes thereof.
  • each of the said springs is a unitary cut out piece.
  • a structure according to claim 2 characterized in that the intermediary connecting sections are inclined with respect to the plane of oscillation, so as to oppose a great resistance both to the useful stresses of oscillation and to the parasitic stresses perpendicular to the plane of oscillation.
  • a structure according to claim 2 characterized in that the intermediary connecting sections are situated in the plane of oscillation, so as to oppose a maximum resistance to the useful stresses of oscillation.
  • a structure according to claim 2 characterized in that the connecting sections situated at each end of the spring lie in a plane parallel to the plane of oscillation, so as to render possible a flat welding, without any static constraint of the spring.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Springs (AREA)
  • Electric Clocks (AREA)
US00234571A 1969-06-04 1972-03-14 Mechanical resonator of rotation Expired - Lifetime US3782209A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH848369A CH512757A (fr) 1967-06-27 1969-06-04 Résonateur de rotation mécanique pour appareil de mesure du temps

Publications (1)

Publication Number Publication Date
US3782209A true US3782209A (en) 1974-01-01

Family

ID=4341037

Family Applications (1)

Application Number Title Priority Date Filing Date
US00234571A Expired - Lifetime US3782209A (en) 1969-06-04 1972-03-14 Mechanical resonator of rotation

Country Status (5)

Country Link
US (1) US3782209A (ru)
CH (2) CH848369A4 (ru)
DE (1) DE2025073A1 (ru)
FR (1) FR2045831B2 (ru)
GB (1) GB1316877A (ru)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4193008A (en) * 1977-04-18 1980-03-11 Murata Manufacturing Co., Ltd. Tuning fork formed of rolled invariable elasticity material

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2894521A1 (en) * 2014-01-13 2015-07-15 Ecole Polytechnique Federale de Lausanne (EPFL) Isotropic harmonic oscillator and associated time base without escapement or simplified escapement
EP3095011B1 (en) 2014-01-13 2022-11-30 Ecole Polytechnique Fédérale de Lausanne (EPFL) Orbiting masses system
RU2686446C2 (ru) * 2014-01-13 2019-04-25 Эколь Политекник Федераль Де Лозанн (Епфл) Изотропный гармонический осциллятор с по меньшей мере двумя степенями свободы и соответствующий регулятор с отсутствующим спусковым механизмом или с упрощенным спусковым механизмом

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3167905A (en) * 1963-07-16 1965-02-02 Bulova Watch Co Inc Motion transformers for electronically controlled timepiece
US3170278A (en) * 1961-09-18 1965-02-23 Foerderung Forschung Gmbh Flexural vibrator for normal-frequency oscillators, especially in time-measuring appliances
US3316708A (en) * 1964-07-31 1967-05-02 Ct Electronique Horloger Mechanical resonator for normal frequency oscillators in time measuring device
GB1067148A (en) * 1964-01-20 1967-05-03 Centre Electron Horloger Mechanical resonator for oscillators in time-keepers
FR1510547A (fr) * 1966-02-10 1968-01-19 Kienzle Uhrenfabriken Gmbh Diapason ou autre vibrateur semblable à lames
GB1108028A (en) * 1966-11-11 1968-03-27 Centre Electron Horloger Electro-mechanical watch

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3170278A (en) * 1961-09-18 1965-02-23 Foerderung Forschung Gmbh Flexural vibrator for normal-frequency oscillators, especially in time-measuring appliances
US3167905A (en) * 1963-07-16 1965-02-02 Bulova Watch Co Inc Motion transformers for electronically controlled timepiece
GB1067148A (en) * 1964-01-20 1967-05-03 Centre Electron Horloger Mechanical resonator for oscillators in time-keepers
US3316708A (en) * 1964-07-31 1967-05-02 Ct Electronique Horloger Mechanical resonator for normal frequency oscillators in time measuring device
FR1510547A (fr) * 1966-02-10 1968-01-19 Kienzle Uhrenfabriken Gmbh Diapason ou autre vibrateur semblable à lames
GB1108028A (en) * 1966-11-11 1968-03-27 Centre Electron Horloger Electro-mechanical watch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4193008A (en) * 1977-04-18 1980-03-11 Murata Manufacturing Co., Ltd. Tuning fork formed of rolled invariable elasticity material

Also Published As

Publication number Publication date
CH848369A4 (ru) 1971-05-14
FR2045831A2 (ru) 1971-03-05
CH512757A (fr) 1971-05-14
DE2025073A1 (de) 1970-12-10
GB1316877A (en) 1973-05-16
FR2045831B2 (ru) 1973-08-10

Similar Documents

Publication Publication Date Title
CN106444335B (zh) 具有磁性同步旋转臂的钟表调速机构
US4592242A (en) Dynamically tuned gimbal suspension with flexural pivots for a two-degree-of-freedom gyro
US3318087A (en) Torsion oscillator
US9971303B2 (en) Timepiece resonator mechanism
US3782209A (en) Mechanical resonator of rotation
US10928779B2 (en) Isochronous pivot for timepiece resonators
US3170278A (en) Flexural vibrator for normal-frequency oscillators, especially in time-measuring appliances
US2901703A (en) Frictionless suspension means for rotary elements
US3316708A (en) Mechanical resonator for normal frequency oscillators in time measuring device
GB1446112A (en) Tuned free fotor gyroscope
US3312458A (en) Bearing between two relatively oscillable members for oscillating movement
US3188071A (en) Flexural pivot
US3469462A (en) Pawl and ratchet mechanism driven by vibratory means
US3107481A (en) Timing device utilizing a mechanism
US3211012A (en) Intermittent drive mechanism
JP4437340B2 (ja) 光電式エンコーダ
US3600973A (en) Oscillating system
JP7317036B2 (ja) 時計用緩急針組立体
CN109307999B (zh) 具有长角行程的柔性导向件的钟表振荡器
US3053041A (en) Vibration-resistant escapements
US11789407B2 (en) Pivoting guide device for a pivoting mass and timepiece resonator mechanism
US20190332056A1 (en) Timepiece regulating mechanism with articulated resonators
US2962900A (en) Lever escapements
US3286457A (en) Oscillation device of magnetic escapement
US3706238A (en) Apparatus and method for converting rotary to harmonic reciprocating motion