CH621231GA3 - - Google Patents

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Publication number
CH621231GA3
CH621231GA3 CH878276A CH878276A CH621231GA3 CH 621231G A3 CH621231G A3 CH 621231GA3 CH 878276 A CH878276 A CH 878276A CH 878276 A CH878276 A CH 878276A CH 621231G A3 CH621231G A3 CH 621231GA3
Authority
CH
Switzerland
Prior art keywords
rotor
energized
stator
equilibrium point
static equilibrium
Prior art date
Application number
CH878276A
Other versions
CH621231B (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 CH621231B publication Critical patent/CH621231B/en
Priority claimed from JP261376A external-priority patent/JPS6056400B2/en
Priority claimed from JP2049576A external-priority patent/JPS52104164A/en
Application filed filed Critical
Publication of CH621231GA3 publication Critical patent/CH621231GA3/xx

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K37/00—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors
    • H02K37/10—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type
    • H02K37/12—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets
    • H02K37/14—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets with magnets rotating within the armatures
    • H02K37/16—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets with magnets rotating within the armatures having horseshoe armature cores
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C13/00—Driving mechanisms for clocks by master-clocks
    • G04C13/08—Slave-clocks actuated intermittently
    • G04C13/10—Slave-clocks actuated intermittently by electromechanical step advancing mechanisms
    • G04C13/11—Slave-clocks actuated intermittently by electromechanical step advancing mechanisms with rotating armature
    • 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
    • G04C3/14—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P8/00—Arrangements for controlling dynamo-electric motors of the kind having motors rotating step by step
    • H02P8/02—Arrangements for controlling dynamo-electric motors of the kind having motors rotating step by step specially adapted for single-phase or bi-pole stepper motors, e.g. watch-motors, clock-motors

Abstract

A stepping motor for an electronic timepiece comprises a permanent magnet rotor, a stator and a driving coil, having at least one static equilibrium point for the rotor. The driving coil is arranged to be energized by a current smaller than a driving current so that the stator is energized to required polarities of low flux intensity, whereby the static equilibrium point for the rotor is electromagnetically shifted to an arbitrary position to permit rotation of the rotor in any desired direction.
CH878276A 1976-01-12 1976-07-08 STEPPER MOTOR. CH621231B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP261376A JPS6056400B2 (en) 1976-01-12 1976-01-12 Drive control method for pulse motor for watches
JP2049576A JPS52104164A (en) 1976-02-26 1976-02-26 Electromechanical convertor driving circuit

Publications (2)

Publication Number Publication Date
CH621231B CH621231B (en)
CH621231GA3 true CH621231GA3 (en) 1981-01-30

Family

ID=26336043

Family Applications (1)

Application Number Title Priority Date Filing Date
CH878276A CH621231B (en) 1976-01-12 1976-07-08 STEPPER MOTOR.

Country Status (5)

Country Link
US (1) US4055785A (en)
CH (1) CH621231B (en)
DE (1) DE2628583C3 (en)
GB (1) GB1561584A (en)
HK (1) HK34582A (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5312669A (en) * 1976-07-21 1978-02-04 Seiko Instr & Electronics Ltd Hands reversing device of electronic watch
JPS5355079A (en) * 1976-10-28 1978-05-19 Citizen Watch Co Ltd Correction system of electronic watch
JPS5370876A (en) * 1976-12-07 1978-06-23 Seiko Instr & Electronics Ltd Electronic wristwatch
US4162418A (en) * 1976-12-14 1979-07-24 Niles Parts Co., Ltd. Stepping motor for electronic clock
JPS53107611A (en) * 1977-03-01 1978-09-19 Seiko Epson Corp Step motor
JPS547374A (en) * 1977-06-17 1979-01-20 Seiko Instr & Electronics Ltd Step motor device for electronic watches
GB2007409B (en) * 1977-09-02 1982-04-15 Ebauches Sa Driving device especially for a timepiece
DE2749141A1 (en) * 1977-11-03 1979-05-10 Quarz Zeit Ag ELECTRIC CLOCK
CH620062A5 (en) * 1978-05-12 1980-10-31 Portescap
CH616552B (en) * 1978-07-13 Berney Sa Jean Claude ELECTRONIC WATCH PART.
FR2450527A1 (en) * 1979-03-01 1980-09-26 Suisse Horlogerie NON REVERSIBLE STEPPER MOTOR
GB2054978B (en) * 1979-07-06 1984-06-13 Ebauches Sa Electromagnetic motor rotatable in either direction
US4375049A (en) * 1980-09-24 1983-02-22 Timex Corporation Stepping motor drive circuit for bi-directional rotation
US4477196A (en) * 1981-05-07 1984-10-16 Kabushiki Kaisha Suwa Seikosha Analog electronic timepiece
US4912692A (en) * 1988-09-29 1990-03-27 Timex Corporation High rate, bidirectional drive for a bipole stepping motor watch
US6215207B1 (en) * 1997-08-26 2001-04-10 Denso Corporation Torque motor having uniform torque output characteristics
AUPP696198A0 (en) * 1998-11-06 1998-12-03 Brits, Ludwig A rotary electrical converter and controller therefor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344378A (en) * 1965-07-30 1967-09-26 Donald A Wilhelmson Magnetic detent
US3626269A (en) * 1969-08-25 1971-12-07 Calma Co Stepping motor drive
US3746959A (en) * 1970-10-19 1973-07-17 Fujitsu Ltd Circuit for driving an electric pulse motor
JPS604666B2 (en) * 1974-04-04 1985-02-05 セイコーエプソン株式会社 Converter for crystal watches

Also Published As

Publication number Publication date
GB1561584A (en) 1980-02-27
DE2628583A1 (en) 1977-07-14
HK34582A (en) 1982-08-06
CH621231B (en)
DE2628583B2 (en) 1980-11-27
DE2628583C3 (en) 1981-09-10
US4055785A (en) 1977-10-25

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