Title:
LINEAR VIBRATION MOTOR
Document Type and Number:
WIPO Patent Application WO/2021/127913
Kind Code:
A1
Abstract:
A linear vibration motor (100), comprising a guide housing (1), a vibrating unit (2), a coil unit (3) and an auxiliary magnetic steel unit (4). The guide housing (1) is made of a conductive material, and the guide housing (1) comprises a body (11) and a guide channel (12) penetrating through the body (11); the vibrating unit (2) is accommodated in the guide channel (12) and forms a sliding connection with the latter, and the vibrating unit (2) comprises a magnetic steel unit (21); the coil unit (3) is sleeved on the outer side the guiding shell (1) and is used for driving the vibrating unit (2) to vibrate along the axial direction of the guide channel (12); the auxiliary magnetic steel unit (4) is fixed to the guide housing (1) and is spaced apart from the vibrating unit (2), and the auxiliary magnetic steel unit (4) is located within the magnetic field of the magnetic steel unit (21) to generate a vibration restoring force for restoring the vibration displacement of the vibrating unit (2). Compared with the related art, the linear vibration motor (100) is simple to assemble and stable in performance.
Inventors:
PU XIAOFENG (CN)
LING FANGHUA (CN)
SHI MENGXUN (CN)
AN AILING (CN)
LING FANGHUA (CN)
SHI MENGXUN (CN)
AN AILING (CN)
Application Number:
PCT/CN2019/127608
Publication Date:
July 01, 2021
Filing Date:
December 23, 2019
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECHNOLOGIES PTE LTD (SG)
AAC TECHNOLOGIES PTE LTD (SG)
International Classes:
H02K33/18
Foreign References:
| CN102035340A | 2011-04-27 | |||
| CN110445343A | 2019-11-12 | |||
| CN204145249U | 2015-02-04 | |||
| CN110445345A | 2019-11-12 | |||
| CN104660106A | 2015-05-27 | |||
| JP2001178103A | 2001-06-29 | |||
| JPH09163709A | 1997-06-20 |
Attorney, Agent or Firm:
GUANGDONG GUANGHE LAW FIRM (CN)
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