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Title:
FLAT VOICE COIL MOTOR
Document Type and Number:
WIPO Patent Application WO/2015/078287
Kind Code:
A1
Abstract:
A flat voice coil motor, comprising a coil unit and two main magnetic pole units. The two main magnetic pole units exert an ampere force on the coil unit. The coil unit comprises a weakly magnetic small magnet (107). The resultant force of the two main magnetic pole units on the weakly magnetic small magnet (107) is vertically upward. The weakly magnetic small magnet (107) is arranged within the coil unit. Via magnetic repulsion or magnetic attraction between the weakly magnetic small magnet (107) and the main magnetic pole units, the coil unit is continually provided with a vertically upward force, thereby compensating for gravity. In the present structure, a portion of the components within the coil unit are replaced with the weakly magnetic small magnet (107). The ampere force received by a coil within the coil unit is not affected, and adverse consequences of increased motor heat generation produced by increasing the structure are avoided.

Inventors:
DUAN SUBING (CN)
ZHANG ZHIGANG (CN)
CHEN QINGSHENG (CN)
LIU XIAOHU (CN)
Application Number:
PCT/CN2014/090589
Publication Date:
June 04, 2015
Filing Date:
November 07, 2014
Export Citation:
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Assignee:
SHANGHAI MICROELECTRONICS EQUI (CN)
International Classes:
H02K33/18; H02N15/00
Foreign References:
CN102215019A2011-10-12
CN102722089A2012-10-10
CN201118422Y2008-09-17
CN101917143A2010-12-15
CN101964579A2011-02-02
CN103001444A2013-03-27
CN101607372A2009-12-23
US5914836A1999-06-22
JP2004228597A2004-08-12
Other References:
None
See also references of EP 3076531A4
Attorney, Agent or Firm:
SHANGHAI SAVVY INTELLECTUAL PROPERTY AGENCY (CN)
上海思微知识产权代理事务所（普通合伙） (CN)
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