Title:
振動モータ
Document Type and Number:
Japanese Patent JP6872235
Kind Code:
B2
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 shaft 30 is 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.
Inventors:
Shuichi Imai
Application Number:
JP2017115578A
Publication Date:
May 19, 2021
Filing Date:
June 13, 2017
Export Citation:
Assignee:
Tokyo Parts Industry Co., Ltd.
International Classes:
H02K5/16; B06B1/16; H02K7/065
Domestic Patent References:
| JP11356008A | ||||
| JP61281880A | ||||
| JP10066294A | ||||
| JP4051051U | ||||
| JP6303735A | ||||
| JP11308803A | ||||
| JP2223346A | ||||
| JP2009268352A |
Foreign References:
| WO2010090431A1 | ||||
| US4861657 |