The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 25, 2022
Filed:
Jun. 12, 2018
Applicant:
Nidec Corporation, Kyoto, JP;
Inventor:
Shigeharu Sumi, Kyoto, JP;
Assignee:
NIDEC CORPORATION, Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 15/04 (2006.01); H02K 3/18 (2006.01); H02K 15/095 (2006.01); B21F 15/02 (2006.01); H02K 1/14 (2006.01); H02K 15/02 (2006.01);
U.S. Cl.
CPC ...
H02K 15/04 (2013.01); B21F 15/02 (2013.01); H02K 1/146 (2013.01); H02K 3/18 (2013.01); H02K 15/022 (2013.01); H02K 15/095 (2013.01);
Abstract
A manufacturing method for a coil includes: a step of winding a wire (conductive wire) in multiple layers and multiple rows and forming a coil having a trapezoidal cross-sectional shape; a step of arranging the coil in a molding space surrounded by a plurality of split dies; and a step of moving the slit die in a direction of narrowing the molding space to mold the cross-sectional shape of the coil. In the step of molding the cross-sectional shape, at least one of the plurality of split dies is moved to mold the cross-sectional shape into a fan shape by surfaces formed in the split dies.