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Title:
LINEAR VIBRATION MOTOR
Document Type and Number:
WIPO Patent Application WO/2017/133152
Kind Code:
A1
Abstract:
A linear vibration motor, comprising a housing (1, 11), a vibrator and a stator fixed on the housing (1, 11) and arranged in parallel with the vibrator. The vibrator comprises a mass block (9) and a vibration block embedded in a central portion of the mass block (9), the vibration block comprising permanent magnets (7a, 7b, 7c). A push-pull structure respectively abuts two ends of the vibration block, the push-pull structure comprising push-pull magnets (5a, 5a', 5b, 5b', 5c, 5c', 5d, 5d') embedded within the mass block (9) and push-pull coils (2a, 2a', 2b, 2b') fixed on the housing. An interaction force enhancing a magnetic field is produced between the push-pull magnets (5a, 5a', 5b, 5b', 5c, 5c', 5d, 5d') and the adjacent permanent magnets (7a, 7b, 7c). After being turned on, the push-pull coils (2a, 2a', 2b, 2b') produce a push-pull force on the horizontal direction with the push-pull magnets (5a, 5a', 5b, 5b', 5c, 5c', 5d, 5d'), providing an initial driving force for reciprocating movement of the vibrator along the direction parallel to the plane on which the stator is located. The linear vibration motor makes full use of the magnetic field of the push-pull coils, enhances the push-pull force, and implements magnetic field reuse.

Inventors:
ZU, Fenglei (268 Dongfang Road, Hi-Tech Industry DistrictWeifang, Shandong 1, 261031, CN)
LIU, Chunfa (268 Dongfang Road, Hi-Tech Industry DistrictWeifang, Shandong 1, 261031, CN)
Application Number:
CN2016/084794
Publication Date:
August 10, 2017
Filing Date:
June 03, 2016
Export Citation:
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Assignee:
GOERTEK.INC (268 Dongfang Road, Hi-Tech Industry DistrictWeifang, Shandong 1, 261031, CN)
International Classes:
H02K33/02
Foreign References:
CN105281528A2016-01-27
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EP2608373A12013-06-26
Attorney, Agent or Firm:
BEYOND TALENT PATENT AGENT FIRM (Room 1202, Kuntai Building#10 Chaoyangmenwai Str., Chaoyang District, Beijing 0, 100020, CN)
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