Motor and motor assembly

US11804753B2 · kind B2 · utility

Assignee

• NIDEC CORPORATION · JP

Inventors

• Hideki Nishimura · Chuo, JP
• Tomohiro Hasegawa · Kyoto, JP
• Hiroaki Hirano · Kyoto, JP
• Yoichi Sekii · Kyoto, JP

Key dates

• Filing date: Jun 1, 2021
• Grant date: Oct 31, 2023
• Expiry date: Jan 25, 2042

Classification

• Technology area (CPC —): General

Abstract

A motor includes a stator, a rotor, and a bearing. The stator includes a shaft that extends in a vertical direction. The rotor is rotatable around the shaft. The bearing supports the rotor in a rotatable manner. The rotor includes a magnet, a case, and a tooth groove. The magnet is radially outward of the stator and opposes the stator in a radial direction. The case covers a radially outer end of the magnet. The tooth groove is provided in a radially outer surface of the case.