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CH675810GA3 - Stepping motor for clock mechanism - has rotor and stator of specified ferromagnetic properties, with semi-hard material used for coil core - Google Patents

Stepping motor for clock mechanism - has rotor and stator of specified ferromagnetic properties, with semi-hard material used for coil core Download PDF

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Publication number
CH675810GA3
CH675810GA3 CH354887A CH354887A CH675810GA3 CH 675810G A3 CH675810G A3 CH 675810GA3 CH 354887 A CH354887 A CH 354887A CH 354887 A CH354887 A CH 354887A CH 675810G A3 CH675810G A3 CH 675810GA3
Authority
CH
Switzerland
Prior art keywords
rotor
semi
stator
stepping motor
material used
Prior art date
Application number
CH354887A
Other languages
French (fr)
Other versions
CH675810B5 (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
Application filed filed Critical
Priority to CH354887A priority Critical patent/CH675810GA3/en
Publication of CH675810GA3 publication Critical patent/CH675810GA3/en
Publication of CH675810B5 publication Critical patent/CH675810B5/fr

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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)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Electromechanical Clocks (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

The motor includes two stator pole pieces (2a, 2b) surrounding a rotor (3). A coil former (4) links the two pole pieces together, and a coil is wound on this former. The pole pieces have a degree of asymmetry w.r.t. the axis (BB') passing through the rotor, in order to provide favourable starting conditions. The core of the coil is made from a semi-hard ferromagnetic material having a coercive field between 150 and 450/m. The permanent magnet rotor has a coercive field of less than 300 kA/m. ADVANTAGE - Has more efficienct operation.
CH354887A 1989-07-13 1989-07-13 Stepping motor for clock mechanism - has rotor and stator of specified ferromagnetic properties, with semi-hard material used for coil core CH675810GA3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CH354887A CH675810GA3 (en) 1989-07-13 1989-07-13 Stepping motor for clock mechanism - has rotor and stator of specified ferromagnetic properties, with semi-hard material used for coil core

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH354887A CH675810GA3 (en) 1989-07-13 1989-07-13 Stepping motor for clock mechanism - has rotor and stator of specified ferromagnetic properties, with semi-hard material used for coil core

Publications (2)

Publication Number Publication Date
CH675810GA3 true CH675810GA3 (en) 1990-11-15
CH675810B5 CH675810B5 (en) 1991-05-15

Family

ID=4258361

Family Applications (1)

Application Number Title Priority Date Filing Date
CH354887A CH675810GA3 (en) 1989-07-13 1989-07-13 Stepping motor for clock mechanism - has rotor and stator of specified ferromagnetic properties, with semi-hard material used for coil core

Country Status (1)

Country Link
CH (1) CH675810GA3 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2201575A2 (en) * 1972-09-29 1974-04-26 Valroger Pierre De
EP0085648A1 (en) * 1982-01-28 1983-08-10 Asulab S.A. Stepping motor with two directions of rotation, in particular for electronic time pieces, and motor unit comprising the same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2201575A2 (en) * 1972-09-29 1974-04-26 Valroger Pierre De
EP0085648A1 (en) * 1982-01-28 1983-08-10 Asulab S.A. Stepping motor with two directions of rotation, in particular for electronic time pieces, and motor unit comprising the same

Also Published As

Publication number Publication date
CH675810B5 (en) 1991-05-15

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