Title:
磁性素子の製造方法
Document Type and Number:
Japanese Patent JP6547313
Kind Code:
B2
Abstract:
A manufacturing method of a magnetic element (10) including the steps of: sandwiching and holding at least one of a terminal unit (40) and a coil terminal-end (311) of a coil between a tubular-shaped upper-side die (101) and a tubular-shaped lower-side die (102); filling a magnetic material in the tubular-shaped portion (S); and pressure-molding a core (20), whose side surface (21) follows the inner walls of the upper-side die and the lower-side die by using an upper-side punch (103) and also by using a lower-side punch (104), wherein at least a portion of the inner wall (101a) of the upper-side die and at least a portion of the inner wall (102a) of the lower-side die have respective different distances with respect to the center of the tubular-shaped portion, and in the step of pressure-molding, there is formed a core concave-portion (211/212) having a step on the outside surface of the core (20), by transcription, and at least one of the terminal unit (40) and the coil terminal-end (311) is at the boundary.
Inventors:
Satoru Yamada
Application Number:
JP2015018991A
Publication Date:
July 24, 2019
Filing Date:
February 03, 2015
Export Citation:
Assignee:
Sumida Corporation
International Classes:
H01F41/02; H01F27/255; H01F27/28; H01F27/29; H01F41/10
Domestic Patent References:
| JP2006324457A | ||||
| JP2011249770A | ||||
| JP2014150093A | ||||
| JP2005310869A |
Attorney, Agent or Firm:
Iat International Patent Business Corporation