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CH643708B - ELECTROMAGNETIC MOTOR FOR WATCHMAKING PART. - Google Patents

ELECTROMAGNETIC MOTOR FOR WATCHMAKING PART.

Info

Publication number
CH643708B
CH643708B CH820580A CH820580A CH643708B CH 643708 B CH643708 B CH 643708B CH 820580 A CH820580 A CH 820580A CH 820580 A CH820580 A CH 820580A CH 643708 B CH643708 B CH 643708B
Authority
CH
Switzerland
Prior art keywords
rotor
hollowing
electromagnetic motor
shaped
watchmaking part
Prior art date
Application number
CH820580A
Other languages
French (fr)
Other versions
CH643708GA3 (en
Inventor
Schneiter Ali
Original Assignee
Asulab 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 of CH643708B publication Critical patent/CH643708B/en
Application filed by Asulab Sa filed Critical Asulab Sa
Priority to CH820580A priority Critical patent/CH643708GA3/en
Priority to FR8101664A priority patent/FR2475310A1/en
Priority to US06/229,727 priority patent/US4571516A/en
Priority to DE19813103393 priority patent/DE3103393A1/en
Priority to GB8103386A priority patent/GB2071429B/en
Publication of CH643708GA3 publication Critical patent/CH643708GA3/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • 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
    • 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)
  • Adornments (AREA)

Abstract

The motor comprises a stator (3) formed in one piece, in which a hollowing (4) is made, an element (15) of high magnetic permeability, a coil (16) wound around the said element and a rotor. The rotor includes a shaft (17) and a bar-shaped magnet (18). The hollowing (4) is shaped so that the variation in the positioning torque of the rotor is substantially linear between its maximum negative and positive values. The invention applies in particular to stepper motors of very low current consumption. <IMAGE>
CH820580A 1980-02-06 1980-11-05 Electromagnetic motor for timepiece CH643708GA3 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CH820580A CH643708GA3 (en) 1980-11-05 1980-11-05 Electromagnetic motor for timepiece
FR8101664A FR2475310A1 (en) 1980-02-06 1981-01-27 ELECTROMAGNETIC MOTOR
US06/229,727 US4571516A (en) 1980-02-06 1981-01-29 Electromagnetic motor
DE19813103393 DE3103393A1 (en) 1980-02-06 1981-02-02 ELECTRIC MOTOR FOR A MOVEMENT
GB8103386A GB2071429B (en) 1980-02-06 1981-02-04 Electromagnetic motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH820580A CH643708GA3 (en) 1980-11-05 1980-11-05 Electromagnetic motor for timepiece

Publications (2)

Publication Number Publication Date
CH643708B true CH643708B (en)
CH643708GA3 CH643708GA3 (en) 1984-06-29

Family

ID=4336773

Family Applications (1)

Application Number Title Priority Date Filing Date
CH820580A CH643708GA3 (en) 1980-02-06 1980-11-05 Electromagnetic motor for timepiece

Country Status (1)

Country Link
CH (1) CH643708GA3 (en)

Also Published As

Publication number Publication date
CH643708GA3 (en) 1984-06-29

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Legal Events

Date Code Title Description
PL Patent ceased