Title:
LINEAR MOTOR
Document Type and Number:
WIPO Patent Application WO/2022/047864
Kind Code:
A1
Abstract:
A linear motor, comprising: a sliding body (100), a magnetic generating mechanism (200), and a magnetic member (300). The magnetic generating mechanism (200) magnetically cooperates with the magnetic member (300) to drive the sliding body (100) to perform an action; the magnetic member (300) is arranged in the sliding body (100) at intervals along the vibration direction of the sliding body (100); a first side surface (310) and a second side surface (320) of the magnetic member (300) in the vibration direction of the sliding body (100) are both stepped surfaces, and the number of steps of the first side surface (310) is consistent with that of the second side surface (320). Use of the stepped surfaces on the magnetic member (300) of the linear motor makes a magnetic field waveform formed when the magnetic generating mechanism (200) magnetically cooperates with the magnetic member (300) closer to a sinusoidal waveform, thereby reducing harmonic components and thrust fluctuation. Therefore, the linear motor can effectively reduce thrust fluctuation during operation.
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Inventors:
WENG ZHAOYONG (CN)
GUO SHUN (CN)
SHI WEILING (CN)
GUO SHUN (CN)
SHI WEILING (CN)
Application Number:
PCT/CN2020/117727
Publication Date:
March 10, 2022
Filing Date:
September 25, 2020
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECH NANJING CO LTD (CN)
AAC TECH NANJING CO LTD (CN)
International Classes:
H02K41/02
Foreign References:
| CN101527494A | 2009-09-09 | |||
| CN111130298A | 2020-05-08 | |||
| US9685847B2 | 2017-06-20 | |||
| CN104333193A | 2015-02-04 | |||
| CN111564949A | 2020-08-21 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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