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. 03, 2017
Filed:
Nov. 25, 2015
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Industrial Products and Systems Corporation, Kanagawa, JP;
Makoto Matsushita, Tokyo, JP;
Norio Takahashi, Kanagawa, JP;
Daisuke Misu, Tokyo, JP;
Katsutoku Takeuchi, Kanagawa, JP;
Yutaka Hashiba, Kanagawa, JP;
Masayuki Kawakami, Kanagawa, JP;
Takashi Araki, Mie, JP;
Yuji Yamamoto, Gifu, JP;
Hisami Katsurayama, Mie, JP;
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
TOSHIBA INDUSTRIAL PRODUCTS AND SYSTEMS CORPORATION, Kanagawa, JP;
Abstract
A permanent magnet type rotary electric machine has a stator, a rotor which is rotatably provided inside the stator, and permanent magnets arranged in a rotor core of the rotor. An angle θ between a straight line connecting the center of the rotor to a middle position between two permanent magnets arranged in the V shape, and a straight line connecting the center of the rotor to an outer circumferential top of one of the permanent magnets has the relation: 0.65<Θ(=θ/(180/P))<0.80 in which P is the number of poles in the rotor. When a rear depth of a slot of the stator core is D, and a burying depth of the permanent magnet in the radial direction of the rotor core is t, D/t=A has the relation: 0.8<A<1.1.