CH675940GA3 - Stepping motor for watch mechanism - includes two rotors having different characteristics and controlled by single driving coil - Google Patents

Stepping motor for watch mechanism - includes two rotors having different characteristics and controlled by single driving coil Download PDF

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Publication number
CH675940GA3
CH675940GA3 CH271388A CH271388A CH675940GA3 CH 675940G A3 CH675940G A3 CH 675940GA3 CH 271388 A CH271388 A CH 271388A CH 271388 A CH271388 A CH 271388A CH 675940G A3 CH675940G A3 CH 675940GA3
Authority
CH
Switzerland
Prior art keywords
rotors
stepping motor
different
controlled
watch mechanism
Prior art date
Application number
CH271388A
Other languages
French (fr)
Other versions
CH675940B5 (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 CH271388A priority Critical patent/CH675940GA3/en
Publication of CH675940GA3 publication Critical patent/CH675940GA3/en
Publication of CH675940B5 publication Critical patent/CH675940B5/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
    • 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
    • G04C3/146—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor incorporating two or more stepping motors or rotors

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Control Of Stepping Motors (AREA)

Abstract

The stepping motor includes a magnetic stator circuit made of soft ferromagnetic material, with a coil (3). The magnetic circuit provides two parallel branches accommodating two rotors (1, 2) linked to different drive trains (11, 12). The positioning torques acting on the two rotors are different, allowing them to be controlled selectively by applying different pulses to the coil. The magnetic circuit is nevertheless provided by a single piece common to both rotors. ADVANTAGE - Single motor provides independent control of different aspects of watch mechanism.
CH271388A 1988-07-15 1988-07-15 Stepping motor for watch mechanism - includes two rotors having different characteristics and controlled by single driving coil CH675940GA3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CH271388A CH675940GA3 (en) 1988-07-15 1988-07-15 Stepping motor for watch mechanism - includes two rotors having different characteristics and controlled by single driving coil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH271388A CH675940GA3 (en) 1988-07-15 1988-07-15 Stepping motor for watch mechanism - includes two rotors having different characteristics and controlled by single driving coil

Publications (2)

Publication Number Publication Date
CH675940GA3 true CH675940GA3 (en) 1990-11-30
CH675940B5 CH675940B5 (en) 1991-05-31

Family

ID=4239924

Family Applications (1)

Application Number Title Priority Date Filing Date
CH271388A CH675940GA3 (en) 1988-07-15 1988-07-15 Stepping motor for watch mechanism - includes two rotors having different characteristics and controlled by single driving coil

Country Status (1)

Country Link
CH (1) CH675940GA3 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2353889A1 (en) * 1976-06-02 1977-12-30 Yema Ste Multiple function analogue quartz watch - with auxiliary counter, decoder and memory group for digital information display
JPS5380510A (en) * 1976-12-24 1978-07-17 Seiko Instr & Electronics Ltd Convertors
JPS5380511A (en) * 1976-12-24 1978-07-17 Kanto Seiki Co Step motor for clock
JPS589086A (en) * 1981-07-10 1983-01-19 Citizen Watch Co Ltd Driving system for step motor of electronic clock

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2353889A1 (en) * 1976-06-02 1977-12-30 Yema Ste Multiple function analogue quartz watch - with auxiliary counter, decoder and memory group for digital information display
JPS5380510A (en) * 1976-12-24 1978-07-17 Seiko Instr & Electronics Ltd Convertors
JPS5380511A (en) * 1976-12-24 1978-07-17 Kanto Seiki Co Step motor for clock
JPS589086A (en) * 1981-07-10 1983-01-19 Citizen Watch Co Ltd Driving system for step motor of electronic clock

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 2, no. 115, septembre 1978, page 647, E78; & JP-A-53 080 510 (DAINI SEIKOSHA K.K.) 17-07-1978 *
PATENT ABSTRACTS OF JAPAN, vol. 7, no. 78 (P-188)[1223], 31 mars 1983; & JP-A-58 009 086 (CITIZEN TOKEI K.K.) 19-01-1983 *

Also Published As

Publication number Publication date
CH675940B5 (en) 1991-05-31

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Legal Events

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PL Patent ceased