MAGNET ARRANGEMENT STRUCTURE SUITABLE FOR VOICE COIL MOTOR AND MINIATURE ANTI-SHAKE GIMBAL

WIPO Patent Application WO/2023/019955

A1

Provided in the present invention is a magnet arrangement structure suitable for a voice coil motor, comprising a magnet base and a coil base coaxial with the magnet base. A number 2n of magnet groups are arranged on the magnet base, n being a natural number, and n≥1. The magnet groups are symmetrically arranged around the middle of the magnet base. Each magnet group comprises at least one magnet, and each magnet has two magnetic poles. The face of each magnet group facing the central axis comprises two different magnetic poles, each magnetic pole being opposite to the adjacent magnet group magnetic pole. Each magnet group further corresponds to a coil, the coil being mounted on the coil base. Compared with the prior art, the present magnet arrangement structure adopts at least two magnet groups arranged on the magnet base, each magnet group comprising at least two opposite polarities facing the central axis. Each of the magnet polarities facing the central axis is opposite to that of the adjacent magnet. Therefore, the strength of the magnetic field passing through the coil can be effectively increased, the power consumption can be reduced, and the electromagnetic force can be increased. Furthermore, the weight, cost and volume of a motor can be reduced.

MAK LIN CHI (CN)
CHU YEE CHUNG (CN)

PCT/CN2022/083663

February 23, 2023

March 29, 2022

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VISTA INNOTECH LTD (CN)

H02K41/035; G02B7/09; G02B27/64; G03B5/00; G03B13/36

CN111868573A	2020-10-30
TW201007245A	2010-02-16
CN106443950A	2017-02-22
CN105610295A	2016-05-25
CN113517800A	2021-10-19
JP2005275269A	2005-10-06

SHENZHEN QIANNA PATENT AGENCY LTD (CN)

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