Multi-functional actuator

Details Multi-functional actuator Multi-functional actuator

2006-07-11

2006-07-11

Tran, Sinh (Department: 2646)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S396000, C381S406000

Reexamination Certificate

active

07076079

ABSTRACT:
Disclosed is a multi-functional actuator comprising: a housing having an internal space and a groove in the inner side; a sound-generating diaphragm with an outer end fixed to the upper end of said housing; a voice coil fixed to the bottom of said diaphragm; a vertically magnetized magnet; an upper plate attached to said magnet for forming a magnet circuit; a yoke for forming the magnetic circuit together with said magnet; a weight for defining a vibration body together with said yoke; a leaf spring fixed into said grooves of the housing and having a portion of curvature; and a vibrating coil installed in said housing for generating vibration using a magnetic flux formed in a magnetic system. A structure that can prevent deformation of the leaf spring before/after dropping to a mobile communication terminal such as mobile telephone and pager is provided thereby to prevent reliability degradation of the actuator in use for the mobile communication terminal and enhance vibration features thereof.

REFERENCES:
patent: 6208237 (2001-03-01), Saiki et al.
patent: 6466682 (2002-10-01), An
patent: 6487300 (2002-11-01), Lee et al.
patent: 6560347 (2003-05-01), Chung
patent: 6611605 (2003-08-01), Kim
patent: 2002/0076068 (2002-06-01), Chung
patent: 2003/0044031 (2003-03-01), Son

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