Patent · US Active

Motor

US11469633B2 · kind B2 · utility

0Cited by

0References

11Claims

0Family size

Assignee

NIDEC CORPORATION · JP

Inventors

Mitsuhiro TAKEMOTO · Kyoto, JP
Sho Fukuhara · Kyoto, JP
Shinji Takemoto · Katano, JP

Key dates

Filing date	Jul 21, 2020
Grant date	Oct 11, 2022
Priority date	—
Expiry date	Dec 24, 2040

Classification

Technology area (CPC H)Electricity
CPC primaryH02K7/14
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A motor includes a rotor with one or more magnets, a rotor core holding the one or more magnets, a spacer that contacts the one or more magnets, and a rotor holder. The rotor holder includes a holder lid portion and a holder tubular portion in a tubular shape extending to one side in the axial direction from a radially outer edge of the holder lid portion. The holder lid portion includes a holder first surface that extends radially inward from an inner surface of the holder tubular portion, a holder second surface that extends radially and is radially inward of the holder first surface and on the other side in the axial direction, and a connecting surface connecting the holder first surface and the holder second surface.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.