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. 30, 2019
Filed:
Nov. 24, 2015
Applicant:
Mabuchi Motor Co., Ltd., Matsudo, Chiba, JP;
Inventor:
Yasuhiro Yamagata, Matsudo, JP;
Assignee:
MABUCHI MOTOR CO., LTD., Matsudo, Chiba, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 7/02 (2006.01); H02K 1/17 (2006.01); H02K 1/02 (2006.01); H02K 23/40 (2006.01); H02K 23/04 (2006.01);
U.S. Cl.
CPC ...
H02K 1/17 (2013.01); H01F 7/021 (2013.01); H01F 7/0221 (2013.01); H02K 1/02 (2013.01); H02K 23/40 (2013.01); H02K 23/04 (2013.01);
Abstract
A fixing structure for a permanent magnet includes: a cylindrical housing; a permanent magnet housed inside the housing; and an adhesive layer formed in a gap G between the housing and the permanent magnet and having an adhesive for fixing the permanent magnet to the housing. The adhesive layer is formed such that a filling rate of the adhesive is higher in the gap at another axial end of the permanent magnet than at one axial end of the permanent magnet. The permanent magnet is configured such that a density at said other axial end is higher than the density at said one axial end.