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:
Oct. 06, 2020
Filed:
Jul. 14, 2015
Mitsuba Corporation, Gunma, JP;
Mitsuba Corporation, Kiryu-shi, Gunma, JP;
Abstract
In a brushless wiper motor, a rotor () is rotatably provided inside a stator () provided with a coil (), one end side of a rotation shaft () in the axial direction is fixed to the axial center of the rotor (), a worm () is provided on the other end side of the rotation shaft () in the axial direction, the first and second bearings () are respectively provided on one end side of the rotation shaft () in the axial direction and the other end side of the rotation shaft () in the axial direction than the worm () of the rotation shaft (), the rotation shaft () is rotatably supported by only the first and second bearings (), and with the position of the first bearing () being defined as a reference position, a length thereof in the axial direction to the second bearing () is longer than a length thereof in the axial direction to the rotor (). Since a commutator and other parts are not provided on a free end side of the rotation shaft (), it is possible to provide a brushless wiper motor reduced in length of the rotation shaft (), and reduced in inertial mass of the free end side of the rotation shaft ().