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:
Nov. 05, 2024
Filed:
Dec. 09, 2019
Mitsubishi Electric Corporation, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
An electric-rotating-machine rotor has a rotor core in which ring-shaped plate materials that are each magnetic materials are stacked in an axial direction and a shaft-press-fitted into an inner circumferential surface of the rotor core; the inner circumferential surface has a first press-fitting portion that is an axial-direction section into which the shaft is inserted and a second press-fitting portion that is an axial-direction section adjacent to the first press-fitting portion and into which the shaft is inserted with an interference larger than that of the first press-fitting portion, and the shaft is press-fitted into the inner circumferential surface of the rotor core from the first press-fitting portion side. As a result, the electric-rotating-machine rotor in which no gap is caused between the stacked plate materials can be realized at low cost. Moreover, it is made possible to produce the electric-rotating-machine rotor through simple processes and at low cost.