LINEAR VIBRATION MOTOR

WIPO Patent Application WO/2021/007805

A1

The present application provides a linear vibration motor. The motor comprises a housing having an accommodation space, a vibration element accommodated within the accommodation space, a coil fixed to the housing and driving movement of the vibration element, a guide portion fixed to the housing, and a recovery assembly. The vibration element comprises a first magnet and a second magnet. The guide portion supports the vibration element in a direction perpendicular to a vibration direction of the vibration element and is slidably connected to the vibration element. The recovery assembly is fixed to a side of the vibration element, and a magnetic pole of the recovery assembly on a side close to the coil is identical to a magnetic pole at an end of the first magnet close to the second magnetic. A magnetic force between the recovery assembly and the vibration element provides a recovery force to the vibration element. When the vibration element is located at an equilibrium position, a mass center of the vibration element is located between the recovery assembly and the coil. The linear vibration motor provided by the present application uses a magnetic field force to provide a recovery force to the vibration element, thereby enabling the vibration element to vibrate with a large traveling range.

CUI ZHIYONG (CN)
TANG YUN (CN)
MA JIE (CN)
WANG YAO (CN)
MAO LUBIN (CN)

PCT/CN2019/096354

January 21, 2021

July 17, 2019

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AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECHNOLOGIES PTE LTD (CN)

H02K33/02

JPH11155274A	1999-06-08
JPH11155274A	1999-06-08
JP2012213683A	2012-11-08
CN104052228A	2014-09-17
CN205583978U	2016-09-14
US20110210690A1	2011-09-01

SHENZHEN ZHONGYUANLIHE PATENT AND TRADEMARK FIRM (GENERAL PARTNERSHIP) (CN)

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