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:
Feb. 15, 2022
Filed:
Dec. 27, 2017
Nidec Corporation, Kyoto, JP;
NIDEC CORPORATION, Kyoto, JP;
Abstract
A motor includes a rotor, a back cover, a housing, and a brush card assembly. The rotor includes a core fixed to a shaft, a coil that magnetizes a core, and a commutator connected to the coil. The back cover includes a back cover bottom surface portion, and a back cover cylindrical portion on an outer periphery of the back cover bottom surface portion to have a cylindrical shape. The brush card assembly includes a brush card bottom surface portion spaced apart from the back cover bottom surface portion in an axial direction through a first gap. The brush card bottom surface holds brushes and includes a nip portion nipped by the back cover and the housing, an outer peripheral wall spaced apart from the back cover cylindrical portion in a radial direction through a second gap, and contact portions contacting the back cover cylindrical portion.