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. 29, 2020
Filed:
Oct. 10, 2018
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Hiroshi Kinpara, Toyota, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
In a rotor of a rotating electric machine, a rotor core is fixed by plastically deforming a shaft having a simple structure. The rotor core is formed by laminating steel sheets provided with shaft holes. The shaft is formed of a hollow metal component and is inserted so as to penetrate through the shaft holes in the steel sheets. A wall surface of the shaft is partially cut in the circumferential direction, and of two wall surface regions aligned in the axial direction with a cut portion in between, the wall surface region positioned on the side farther from the rotor core is plastically deformed in the radial direction. In this way, protruding portions that open the cut portions are formed. End surfaces of the rotor core are pressure bonded and fixed by the cut portions of these protruding portions.