High performance focusing actuator of a voice coil motor

Details High performance focusing actuator of a voice coil motor High performance focusing actuator of a voice coil motor

2006-08-14

2009-08-18

Mullins, Burton (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Linear

C359S813000, C359S814000, C359S824000, C310S014000

Reexamination Certificate

active

07576455

ABSTRACT:
A high performance focusing actuator of a voice coil motor comprises a retaining unit having a plastic retaining frame; a center portion of the plastic retaining frame being a receiving space; two opposite corners of the receiving space being chamfered; an inner side of each chamfered side being formed with a slide portion; and a metal rear cover plate having a shape corresponding to that of the plastic retaining frame; the metal rear cover plate having an open space coaxial with the receiving space of the plastic retaining frame; an outer side of the metal rear cover plate having four outer plates; each of two opposite corners of each outer plate being formed with an inclined guide surface corresponding to the slide portion of the plastic retaining frame; an iron receiving gap being formed between an inclined guide surface and outer plate; and each iron receiving gap receiving a magnet.

REFERENCES:
patent: 5471100 (1995-11-01), Sakamoto et al.
patent: 7391579 (2008-06-01), Ho et al.
patent: 7400068 (2008-07-01), Tseng
patent: 7400463 (2008-07-01), Wu
patent: 7457061 (2008-11-01), Sata et al.
patent: 2007/0108847 (2007-05-01), Chang
patent: 2007/0247539 (2007-10-01), Ho et al.
patent: 2008/0231975 (2008-09-01), Hou et al.

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