公开(公告)号：US06710693B2

公开(公告)日：2004-03-23

申请号：US10104799

申请日：2002-03-22

申请人： Hatsuo Matsumoto ,  Toru Ito ,  Masahiro Kondo ,  Ryutaro Isoda ,  Toshiya Sato ,  Tadakuni Sato ,  Teruhiko Fujiwara ,  Masayoshi Ishii ,  Haruki Hoshi

发明人： Hatsuo Matsumoto ,  Toru Ito ,  Masahiro Kondo ,  Ryutaro Isoda ,  Toshiya Sato ,  Tadakuni Sato ,  Teruhiko Fujiwara ,  Masayoshi Ishii ,  Haruki Hoshi

IPC分类号： H01F2100

CPC分类号： H01F3/10 ,  H01F3/14 ,  H01F17/045 ,  H01F21/08 ,  H01F41/0266 ,  Y10T29/4902 ,  Y10T29/49075

摘要： An inductor component contains a drum magnetic core made of a magnetic material having a structure including integrated flanges at both ends of a columnar material, a coil wound around the columnar material in the drum magnetic core and placed between the flanges, and a permanent magnet placed in the neighborhood of the drum magnetic core with the coil wound around. This inductor component contains a sleeve core fitted to the outside of the drum magnetic core. The permanent magnet is placed in at least one gap in a closed magnetic circuit formed with the drum magnetic core and the sleeve core in order to apply a direct-current magnetic field in the direction opposite to the direction of a magnetic field generated by a magnetomotive force due to the coil.