CH648454GA3 - Stepper motor with two directions of rotation, especially for electronic timepiece - Google Patents

Stepper motor with two directions of rotation, especially for electronic timepiece Download PDF

Info

Publication number
CH648454GA3
CH648454GA3 CH401182A CH401182A CH648454GA3 CH 648454G A3 CH648454G A3 CH 648454GA3 CH 401182 A CH401182 A CH 401182A CH 401182 A CH401182 A CH 401182A CH 648454G A3 CH648454G A3 CH 648454GA3
Authority
CH
Switzerland
Prior art keywords
rotor
isthmus
axis
coil
rotation
Prior art date
Application number
CH401182A
Other languages
French (fr)
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 filed Critical
Priority to CH401182A priority Critical patent/CH648454GA3/en
Priority to DE8383810015T priority patent/DE3360937D1/en
Priority to EP83810015A priority patent/EP0085648B1/en
Priority to US06/461,292 priority patent/US4460859A/en
Priority to JP58010673A priority patent/JPH0650941B2/en
Publication of CH648454GA3 publication Critical patent/CH648454GA3/en
Priority to HK494/89A priority patent/HK49489A/en

Links

Classifications

    • 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 rotating step by step
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Control Of Stepping Motors (AREA)

Abstract

The motor includes a coil (16), a stator (11) made of one piece, a rotor (18) and positioning means (20a, 20b) for affording the rotor two rest positions in which its axis of magnetisation (A) is directed along an axis of static equilibrium YY'. The stator has two pole parts (11a, 11b) which are interconnected by two intermediate parts (21a, 21b) and by four isthmus (12a - 12d) so that the intermediate parts are cut by the axis YY' and that two isthmus which are opposite with respect to the axis of rotation (Z) of the rotor are situated in a direction (VV', respectively WW') making an angle ( alpha , respectively beta ) of between 30 DEG and 60 DEG with the axis YY'. Two of these isthmus (12a, 12c) which are situated in the same direction (VV') have a width (l) such that they are very rapidly saturated with magnetic flux when the coil creates a field in the stator enabling the rotor to be turned in one direction (D) whereas the other two isthmus (12b, 12d) have a width (l') which is two to four times greater so that when the coil generates a field which takes the rotor in the other direction, the wide isthmus or, here also, the narrow isthmus saturate but less rapidly, so as to obtain a difference of current shape in the coil which allows determination of the direction in which the rotor is ready to turn in response to a motive pulse applied to it and to thus avoid any unintentional reversal of the direction of rotation of the motor. <IMAGE>
CH401182A 1982-01-28 1982-07-01 Stepper motor with two directions of rotation, especially for electronic timepiece CH648454GA3 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CH401182A CH648454GA3 (en) 1982-07-01 1982-07-01 Stepper motor with two directions of rotation, especially for electronic timepiece
DE8383810015T DE3360937D1 (en) 1982-01-28 1983-01-13 Stepping motor with two directions of rotation, in particular for electronic time pieces, and motor unit comprising the same
EP83810015A EP0085648B1 (en) 1982-01-28 1983-01-13 Stepping motor with two directions of rotation, in particular for electronic time pieces, and motor unit comprising the same
US06/461,292 US4460859A (en) 1982-01-28 1983-01-27 Stepping motor assembly
JP58010673A JPH0650941B2 (en) 1982-01-28 1983-01-27 Stepping motor
HK494/89A HK49489A (en) 1982-01-28 1989-06-22 Stepping motor with two directions of rotation,in particular for electronic time pieces,and motor unit comprising the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH401182A CH648454GA3 (en) 1982-07-01 1982-07-01 Stepper motor with two directions of rotation, especially for electronic timepiece

Publications (1)

Publication Number Publication Date
CH648454GA3 true CH648454GA3 (en) 1985-03-29

Family

ID=4268136

Family Applications (1)

Application Number Title Priority Date Filing Date
CH401182A CH648454GA3 (en) 1982-01-28 1982-07-01 Stepper motor with two directions of rotation, especially for electronic timepiece

Country Status (1)

Country Link
CH (1) CH648454GA3 (en)

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