Title: Method of manufacturing magnetic core, magnetic core, electromagnetic transducer, timepiece, and electronic device
Application Number: 200510004056 Application Date: 2005.01.12
Publication Number: 1641971 Publication Date: 2005.07.20
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H02K1/02;G04C3/14
Applicant(s) Name: Seiko Epson Corp. Address:
Inventor(s) Name: Hara Tatsuo;Yanagisawa Toshiaki;Kojima Hiroyuki;Na
Attorney & Agent: dong huishi
Abstract:
    The present invention provides a method for manufacturing a magnetic core, by which a magnetic core part can be easily temporarily fixed, and also provide the magnetic core, an electromagnetic converter, and electronic equipment. The magnetic core part (16), a remaining base material part (42), and a coupling part (43) are formed by press processing from a base material (40). Cuts (18A) are formed at the peripheral edge of the magnetic core part (16). A temporary fixing part (18) is formed, by bending the magnetic core part (16) between the cuts (18A) in the plate thickness direction. When the magnetic core parts (16) are cut from the coupling part (43), in piles of plural sheets of the base materials (40), the magnetic core parts (16) are pressed in the mutually approaching direction, the temporary fixing part (18) is fitted to a space between the cuts (18A) of the other magnetic core part (16), and the other magnetic core part (16) is fixed temporarily. The temporary fixing of the magnetic core part can be executed simply, since the temporary fixing is simultaneously executed by the press processing, in a cutting process which is executed normally.
Time: 11
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