| 摘要 |
PROBLEM TO BE SOLVED: To provide a small coil wherein coil a failure caused by a falling shock can be reduced and a manufacturing man-hour is reduced. SOLUTION: A drum core 31 is made cylindrical, and a drum flange is not arranged on the end of the drum core 31 so that a wire winding can be attached by dropping the wire winding into the drum core 31. As a result, the manufacturing man-hour of the coil can be reduced. Since the drum core 31 and a ring core 32 are formed in an integrated body, the coil which can bear a shock by falling can be obtained. COPYRIGHT: (C)2005,JPO&NCIPI
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