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:
Dec. 04, 2018
Filed:
Jun. 04, 2012
Yukio Yamashita, Tokyo, JP;
Noriyuki Hayashi, Tokyo, JP;
Seiichi Ibaraki, Tokyo, JP;
Katsuyuki Osako, Kitakyushu, JP;
Motoki Ebisu, Tokyo, JP;
Byeongil an, Tokyo, JP;
Hiroshi Suzuki, Tokyo, JP;
Hideaki Arita, Tokyo, JP;
Takashi Goto, Tokyo, JP;
Toshihiko Miyake, Tokyo, JP;
Yukio Yamashita, Tokyo, JP;
Noriyuki Hayashi, Tokyo, JP;
Seiichi Ibaraki, Tokyo, JP;
Katsuyuki Osako, Kitakyushu, JP;
Motoki Ebisu, Tokyo, JP;
Byeongil An, Tokyo, JP;
Hiroshi Suzuki, Tokyo, JP;
Hideaki Arita, Tokyo, JP;
Takashi Goto, Tokyo, JP;
Toshihiko Miyake, Tokyo, JP;
MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD., Sagamihara-Shi, Kanagawa, JP;
Abstract
A motor rotor structure for an electric turbo charger is manufactured at low cost with good quality by fixedly fitting, over a shaft, a rotor core having electromagnetic steel sheets pre-formed as an integrated stack. The rotor structure includes a rotor core which is rotated by a magnetic field formed by a stator in a housing; a shaft configured to rotate a compressor impeller and the rotor core together; and a bearing supporting the shaft. The rotor includes the rotor core including the electromagnetic steel sheets; a stopper portion formed at an intermediate portion of the shaft to restrict axial movement of the rotor core; and a pressing unit which presses the rotor core fitted over the shaft against the stopper portion. The pressing unit prevents a circumferential phase shift between the shaft and the rotor core by a pressing force thereof.