JPS55163811A - Structure and manufacture of coil core of step-motor for clock - Google Patents

Structure and manufacture of coil core of step-motor for clock

Info

Publication number
JPS55163811A
JPS55163811A JP7123379A JP7123379A JPS55163811A JP S55163811 A JPS55163811 A JP S55163811A JP 7123379 A JP7123379 A JP 7123379A JP 7123379 A JP7123379 A JP 7123379A JP S55163811 A JPS55163811 A JP S55163811A
Authority
JP
Japan
Prior art keywords
magnetic core
core frame
clock
motor
manufacture
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP7123379A
Other languages
Japanese (ja)
Inventor
Hironori Nomura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch Co Ltd
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 by Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Priority to JP7123379A priority Critical patent/JPS55163811A/en
Publication of JPS55163811A publication Critical patent/JPS55163811A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/02—Coils wound on non-magnetic supports, e.g. formers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromechanical Clocks (AREA)

Abstract

PURPOSE:To prevent the breaking of wire during the winding work of step-motor for clock by a method wherein roundnesses are provided to corner parts, etc., of a magnetic core frame formed by molding. CONSTITUTION:A spool 8 consisting of a magnetic core frame 2 and coil frames 3 are formed with a thermoplastic resin. A magnetic core 1 is pushed in the magnetic core frame 2. Then roundnesses 7 are formed at the corner parts of the magnetic core frame 2 changing the shape of the magnetic core frame 2 by heat using a heated rounding punch. As the frame is made to have roundenesses, the occurrence of the breaking of wire during the winding work is vanished.
JP7123379A 1979-06-08 1979-06-08 Structure and manufacture of coil core of step-motor for clock Pending JPS55163811A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7123379A JPS55163811A (en) 1979-06-08 1979-06-08 Structure and manufacture of coil core of step-motor for clock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7123379A JPS55163811A (en) 1979-06-08 1979-06-08 Structure and manufacture of coil core of step-motor for clock

Publications (1)

Publication Number Publication Date
JPS55163811A true JPS55163811A (en) 1980-12-20

Family

ID=13454759

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7123379A Pending JPS55163811A (en) 1979-06-08 1979-06-08 Structure and manufacture of coil core of step-motor for clock

Country Status (1)

Country Link
JP (1) JPS55163811A (en)

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