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:
Mar. 31, 2020
Filed:
Apr. 17, 2018
Tokyo Parts Industrial Co., Ltd., Gunma-ken, JP;
Hidekazu Imai, Gunma-ken, JP;
Abstract
A motor case of a vibration motor has a first tubular part and a first inward flange integrally formed in a flange shape in the inward direction from the upper opening end of the first tubular part. A rotary shaftis supported in an upper oil-impregnated bearing and a lower oil-impregnated bearing, and an upper portion of the rotary shaft protrudes from the motor case. The rotary shaft is inserted into a soft washer, with the soft washer between the rotor unit and the upper oil-impregnated bearing. A weight is eccentrically fixed to the upper portion of the rotary shaft, and an attraction magnet is fixed to the motor case and attracts the weight toward the motor case side. A retainer, which prevents the upper oil-impregnated bearing from coming out in the upward direction, is formed on the motor case.