Patent ID: 11894170
Assignee: KYOCERA CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. An inductor core, comprising:
a tubular magnetic material body formed of magnetic material,
the tubular magnetic material body comprising
an inclined portion comprising an inclined surface which constitutes a peripheral surface of a truncated cone having an outer diameter that increases from one end toward the other end of the tubular magnetic material body; and
a straight trunk portion which is disposed coaxially with the inclined portion, comprises an outer peripheral surface which constitutes a peripheral surface of a cylindrical body extending from the other end toward the one end of the tubular magnetic material body, and is connected with the inclined portion,

the outer peripheral surface of the straight trunk portion including a region in a vicinity of the other end with an arithmetic mean roughness Ra, the outer peripheral surface of the straight trunk portion including a region in a vicinity of the inclined portion with an arithmetic mean roughness Ra greater than the arithmetic mean roughness Ra of the region in the vicinity of the other end.