Patent ID: 8368256

Claim:
A voice coil motor (VCM) comprising: a base formed with an opening; a movable body comprising: a bobbin arranged on the base and formed with a hollow hole, and a coil arranged along a periphery of the bobbin; a stator comprising a frame-shaped magnet arranged on the base, the frame-shaped magnet being discrete from the coil and wrapping a periphery of the coil; and a case covering an upper surface and an outer surface of the magnet, the case being coupled to the base, wherein a bottom of the magnet contacting the base is formed with an insulation member, and wherein the VCM further comprises: a bottom pan spring with a first distal end fixed at a bottom end of the bobbin and a second distal end opposite the first distal end fixed between the insulation member and the base; and an upper pan spring with a third distal end and fixed at an upper surface of the bobbin and a fourth distal end opposite the third distal end in a groove at an inner lateral surface of the magnet facing the bobbin.