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:
Jul. 20, 2021
Filed:
Apr. 22, 2016
Mitsubishi Electric Corporation, Tokyo, JP;
Akira Furukawa, Tokyo, JP;
Akihiko Mori, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
In an electric rotating machine including an output shaft, a magnetic body fixed inside a case surrounding the output shaft, a sensor magnet fixed to the output shaft and generating a magnetic field for detecting a rotational angle of the output shaft and a rotation sensor fixed inside the case, arranged between the magnetic body and the sensor magnet in an axial direction of the output shaft and outputting a signal in accordance with the intensity of the magnetic field for detecting the rotational angle, N-pole and S-pole are magnetized in a circumferential direction around the output shaft in the sensor magnet and the rotation sensor is arranged in an area in which amplitudes of a radial-direction component Br around the output shaft and a circumferential-direction component Bθ in a magnetic flux density B of the magnetic field are equivalent.