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. 31, 2023
Filed:
Jul. 27, 2018
Mitsubishi Electric Corporation, Tokyo, JP;
Masahiro Nigo, Chiyoda-ku, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A rotor core has steel laminations stacked in the axial direction, and a permanent magnet is embedded in the rotor core. A stator core has steel laminations stacked in the axial direction, and a coil is wound on the stator core. The stator core has a slot for housing the coil. The stator core has a first core portion at an end portion in the axial direction and a second core portion at a center portion in the axial direction. An area of the slot is larger in the first core portion than in the second core portion. A sheet thickness Tand a lamination gap Lof the steel laminations of the rotor core and a sheet thickness Tand a lamination gap Lof the steel laminations of the first core portion of the stator core satisfy at least one of 0.05 mm≤T−T≤0.15 mm and L<L