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:
Apr. 15, 2014
Filed:
Jun. 08, 2012
Tomokazu Hisada, Anjo, JP;
Tomokazu Hisada, Anjo, JP;
Denso Corporation, Kariya, JP;
Abstract
When a corner part that is most distant from a perimeter surface of a rotor core is defined as a first corner part and a corner part in a position that faces the first corner part in a magnetization direction of a permanent magnet is defined as a second corner part, a gap is formed between the second corner part and an inner circumference side of a slot, and the inner circumference side of the slot that forms the gap has an arc surface that has a point X as a center on the inner circumference side of the slot that faces the first corner part. Therefore, the demagnetizing field by the magnetic flux from the stator side does not act intensively on the second corner part of the permanent magnet, and the demagnetizing field instead affects in a wide range of the permanent magnet equally.