Title:
VIBRATION MOTOR
Document Type and Number:
WIPO Patent Application WO/2020/258265
Kind Code:
A1
Abstract:
The present utility model provides a vibration motor, comprising a fixing bracket, a suspension bracket, an iron core, a driving coil, elastic support members, and magnetic steel assemblies. The suspension bracket is suspended and supported on the fixing bracket by means of the elastic support members. The iron core is mounted on the fixing bracket. The driving coil is wound on the outer sidewall of the iron core. The magnetic steel assemblies are mounted on the suspension bracket and provided on the periphery of the iron core at intervals. Each magnetic steel assembly comprises first magnetic steel, second magnetic steel, and third magnetic steel which are sequentially stacked. The polarity directions of the first magnetic steel and the third magnetic steel are parallel to the central axis of the driving coil. The polarity direction of the second magnetic steel is perpendicular to the central axis of the driving coil. The polarity of the side of the first magnetic steel facing the second magnetic steel is the same as the polarity of the side of the third magnetic steel facing the second magnetic steel. The polarities of the sides of the first magnetic steel and the third magnetic steel close to the second magnetic steel are the same as the polarity of the side of the second magnetic steel close to the driving coil. Two magnetic loops can be generated within the vibration motor of the present utility model, and magnetic field forces of the two magnetic loops increase a driving force of the vibration motor.
Inventors:
YAN XUDONG (CN)
JIN YUNHAO (CN)
ZHANG PENGFEI (CN)
JIN YUNHAO (CN)
ZHANG PENGFEI (CN)
Application Number:
PCT/CN2019/093761
Publication Date:
December 30, 2020
Filing Date:
June 28, 2019
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC MICROTECH SUZHOU CO LTD (CN)
AAC MICROTECH SUZHOU CO LTD (CN)
International Classes:
H02K33/18
Domestic Patent References:
| WO2018038408A1 | 2018-03-01 |
Foreign References:
| KR100984046B1 | 2010-09-28 | |||
| KR100984046B1 | 2010-09-28 | |||
| CN207573210U | 2018-07-03 | |||
| US20130119787A1 | 2013-05-16 |
Attorney, Agent or Firm:
GUANGZHOU YUEXIU JILY PATENT & TRADEMARK LAW OFFICE (CN)
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