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. 02, 2019
Filed:
Oct. 30, 2017
Applicant:
Tokyo Parts Industrial Co., Ltd., Gunma-ken, JP;
Inventor:
Masahiro Nishidate, Gunma-ken, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 1/12 (2006.01); H02K 11/21 (2016.01); H02K 21/22 (2006.01); H02K 29/08 (2006.01); H02K 11/215 (2016.01);
U.S. Cl.
CPC ...
H02K 11/21 (2016.01); H02K 1/12 (2013.01); H02K 11/215 (2016.01); H02K 21/22 (2013.01); H02K 29/08 (2013.01);
Abstract
In a brushless motor having a rotor in which a drive magnetand a position detection magnetare fixed to the inside of a rotor casealong the axial direction, an annular separation platehaving positioning partsandfor positioning these in the circumferential direction is disposed between the drive magnetand the position detection magnetThereby, the magnetic influence of the drive magnet can be limited, and thus a highly reliable position detection signal can be obtained.