| 摘要 |
A high performance voice coil motor comprises: a retaining seat having at least one magnetic unit; a movable seat installed within a receiving space of the retaining seat; the movable seat being installed with at least one coil set; the coil set being interacted with the magnetic unit as current flows through the coil set so that the movable seat moves with respect to the retaining seat; the magnetic unit having four poles so as to increase the density of magnetic lines. Each of four corners of the upper cover is extended with a supporting rod; and each of four sides of the movable seat is installed with a coil set which is adjacent to the magnetic unit. A lower side of the movable seat is installed with two lower elastic sheets; each lower elastic sheet has an electrode plate.
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