CH614600GA3 - - Google Patents

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Publication number
CH614600GA3
CH614600GA3 CH607976A CH607976A CH614600GA3 CH 614600G A3 CH614600G A3 CH 614600GA3 CH 607976 A CH607976 A CH 607976A CH 607976 A CH607976 A CH 607976A CH 614600G A3 CH614600G A3 CH 614600GA3
Authority
CH
Switzerland
Prior art keywords
stator
hole
reinforcing ring
piece
piece stator
Prior art date
Application number
CH607976A
Other versions
CH614600B (en
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
Publication of CH614600B publication Critical patent/CH614600B/en
Application filed filed Critical
Publication of CH614600GA3 publication Critical patent/CH614600GA3/xx

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C13/00—Driving mechanisms for clocks by primary clocks
    • G04C13/08—Secondary clocks actuated intermittently
    • G04C13/10—Secondary clocks actuated intermittently by electromechanical step-advancing mechanisms
    • G04C13/11—Secondary clocks actuated intermittently by electromechanical step-advancing mechanisms with rotating armature

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Adornments (AREA)
  • Telephone Function (AREA)
  • Electrophonic Musical Instruments (AREA)

Abstract

In an electronic timepiece motor, a one-piece stator of magnetic material having a hole therethrough bounded by a circumferential sidewall and defining a pair of stator portions connected by narrow bridges having small cross sections. The narrow bridges define a magnetic circuit of high magnetic resistance between the stator portions. A non-magnetic reinforcing ring is disposed within the hole through the one-piece stator and has an outer diameter effective to insure a snug fit of the reinforcing ring with the circumferential sidewall defining the hole through the stator. The reinforcing ring imparts stiffness to the one-piece stator to prevent deformation of the bridges and the hole. The reinforcing ring has a peripheral reinforcing flange extending outwardly and with the flange bearing against the one-piece stator adjacent the hole therethrough for imparting additional stiffness to the one-piece stator. A rotor is mounted for rotation within the hole through the one-piece stator and within the reinforcing ring.
CH607976A 1975-05-16 1976-05-14 MINIATURE STEP MOTOR FOR WATCHMAKING PART. CH614600B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50059148A JPS51134816A (en) 1975-05-16 1975-05-16 Converter for an electronic clock

Publications (2)

Publication Number Publication Date
CH614600B CH614600B (en)
CH614600GA3 true CH614600GA3 (en) 1979-12-14

Family

ID=13104952

Family Applications (1)

Application Number Title Priority Date Filing Date
CH607976A CH614600B (en) 1975-05-16 1976-05-14 MINIATURE STEP MOTOR FOR WATCHMAKING PART.

Country Status (6)

Country Link
US (1) US4270066A (en)
JP (1) JPS51134816A (en)
CH (1) CH614600B (en)
DE (1) DE2620735C2 (en)
FR (1) FR2311345A1 (en)
GB (1) GB1504669A (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH630775B (en) * 1979-04-12 Portescap POLYPHASE STEP MOTOR FOR WATCHMAKING MOVEMENT.
GB2059173A (en) * 1979-06-25 1981-04-15 Portescap Magnetic transducer with a movable magnet
FR2465353A1 (en) * 1979-09-06 1981-03-20 Ebauches Sa MINIATURE STEP-BY-STEP MOTOR FOR WATCH MOVEMENT
DE3107283C2 (en) * 1981-02-26 1984-10-11 Naučno-issledovatel'skij institut časovoj promyšlennosti, Moskau/Moskva Single-phase miniature stepper motor
FR2500968A1 (en) * 1981-03-02 1982-09-03 Inst Chasovoi Promyshlennost Single-phase step micromotor - has ferromagnetic fixing rotor located between stator and double pole rotor providing variable gap
US4369385A (en) * 1981-03-17 1983-01-18 Malkin Daniel D Single-phase step micromotor
FR2503951B1 (en) * 1981-04-09 1985-09-06 Mo Energeticheskij Institut SINGLE-PHASE STEP MOTOR
US4412144A (en) * 1982-04-08 1983-10-25 Moskovsky Energetichesky Institut Single-phase step motor
DE3512701C1 (en) * 1985-04-09 1986-04-03 Pforzheimer Uhren-Rohwerke Porta GmbH, 7530 Pforzheim Clockwork axle bearing
JPS6291795U (en) * 1985-11-29 1987-06-11
US4725749A (en) * 1986-03-24 1988-02-16 Timex Corporation Stepping motor and frame plate assembly for a wristwatch movement
US4700091A (en) * 1986-08-22 1987-10-13 Timex Corporation Bipolar stepping motor rotor with drive pinion and method of manufacture
US5059840A (en) * 1991-01-25 1991-10-22 Timex Corporation Stator assembly for a timepiece stepping motor
EP1237058A1 (en) * 2001-02-28 2002-09-04 Eta SA Fabriques d'Ebauches Usage of a non-magnetic coating for covering parts in a horological movement
EP2717437B1 (en) * 2012-10-08 2018-08-01 ETA SA Manufacture Horlogère Suisse Electromagnetic motor for electronic clock movement with analogue display
JP7301700B2 (en) * 2019-09-24 2023-07-03 セイコーインスツル株式会社 MOVEMENT, WATCH AND MOVEMENT MANUFACTURING METHOD

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3256453A (en) * 1962-08-27 1966-06-14 Cons Electronics Ind Synchronous motors
US3597915A (en) * 1968-11-05 1971-08-10 Susumu Aizawa Driving device of electronic watch
US3979616A (en) * 1973-02-19 1976-09-07 Kienzle Uhrenfabriken Gmbh Unipolar rotary step motor
FR2232125A1 (en) * 1973-06-01 1974-12-27 Suwa Seikosha Kk
JPS5031309A (en) * 1973-07-24 1975-03-27
JPS5049611U (en) * 1973-09-05 1975-05-15
US3978651A (en) * 1974-12-27 1976-09-07 Kabushiki Kaisha Suwa Seikosha Step motor for quartz crystal electronic timepiece
DE2503206C3 (en) * 1975-01-27 1978-03-30 Vdo Adolf Schindling Ag, 6000 Frankfurt Single phase stepper motor
JPS53132383A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch circuit
JPS5441408A (en) * 1977-09-07 1979-04-02 Seiko Epson Corp Transducer for electronic watch

Also Published As

Publication number Publication date
US4270066A (en) 1981-05-26
FR2311345B1 (en) 1980-04-30
JPS5760862B2 (en) 1982-12-21
CH614600B (en)
GB1504669A (en) 1978-03-22
DE2620735C2 (en) 1986-11-27
FR2311345A1 (en) 1976-12-10
DE2620735A1 (en) 1976-11-25
JPS51134816A (en) 1976-11-22

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