logo

For the Inventor, By the Inventor

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.:

US 12646984 B1

PDFFull Text
Date of Patent:
Jun. 02, 2026

Filed:

Sep. 27, 2023

Rotor, motor including same, and manufacturing method of rotor

Applicant:

Nidec Corporation, Kyoto, JP;

Inventors:

Yosuke Tanaka, Kyoto, JP;

Takeshi Honda, Kyoto, JP;

Hirofumi Muto, Kyoto, JP;

Hideki Tsuji, Kyoto, JP;

Yuya Danjo, Kyoto, JP;

Assignee:

NIDEC CORPORATION, Kyoto, JP;

Attorney:

HAUPTMAN HAM, LLP

Primary Examiner:

Oluseye Iwarere

Assistant Examiner:

Masoud undefined Vaziri

Int. Cl.
CPC ...
H02K 1/276 (2022.01); H02K 15/03 (2006.01);
U.S. Cl.
CPC ...
H02K 1/276 (2013.01); H02K 15/03 (2013.01);
Abstract

A rotor includes stacked core plates, a hole, and a magnet inserted into the hole. A holding core plate has a through hole as part of the hole, a protrusion protruding inwardly from an inner surface of the through hole and being in contact with the magnet, and a displacement permission portion located in an opposite direction to a protrusion direction of the protrusion and permitting displacement of the protrusion in the opposite direction. The rotor includes at least one of a magnet-side chamfered portion in which the front side edge portion of the magnet is chamfered or a protrusion-side chamfered portion in which the tip end edge portion of the protrusion is chamfered. A sum of lengths of the magnet-side and protrusion-side chamfered portions is equal to or longer than a length of the protrusion in the protrusion direction as the rotor is viewed from the axial direction.

Find Patent Forward Citations

Tanaka, Yosuke. (2026). Rotor, motor including same, and manufacturing method of rotor (U.S. Patent No. 12646984). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12646984

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…