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:
Aug. 07, 2018
Filed:
Apr. 06, 2016
Mitsuba Corporation, Gunma, JP;
Mitsuba Corporation, Kiryu-shi, Gunma, JP;
Abstract
Since a shape of a statoris made mirror symmetric with respect to a rotoras a 4-pole/6-slot type, rotational deflection of the rotorcan be suppressed. As the minimum number of poles and the minimum number of slots, which can suppress the rotational deflection of the rotor, a frequency of magnetic noises approaches a frequency of mechanical noises. Thus, it is possible to integrate the whole noises generated by the DR-side wiper motorinto a low frequency range thereof, and to make the acoustic sensitivity (dB) of a vehicle interior smaller. Since the statoris fixed inside a housingand mounting legs fixed to a vehicle body fixed portion are provided in the housing, the stator, which is a source of the magnetic noises, can be fixed to a vehicle via only the housing. Therefore, a brushless wiper motor with quietness improved further can be designed.