Patent ID: 8854749
Filing Date: 2014-10-07
Classification: H02K

Abstract:
1. A voice coil motor (VCM), comprising: a base made of plastic or resin, the base comprising a mounting surface, a plurality of assembling surfaces perpendicularly connecting the mounting surface, and at least one protrusion extending from at least one of the assembling surfaces, each protrusion comprising a head portion; a stator comprising a rack and a plurality of magnets positioned on the rack, the rack being mounted to the mounting surface; a moving unit movably received in the rack; and a shell comprising a top plate and a plurality of side plates extending from the top plate, the shell defining at least one slot, each of the at least one slot being at a joint between each two adjacent side plates, at least one of the side plates defining at least one mounting holes, an outer diameter of each head portion greater than a diameter of each mounting hole; wherein the base, the moving unit, and the stator are all accommodated in the shell, each protrusion passes through a respective one of the at least one mounting hole, each head portion is positioned outside of the shell and touches an outer surface of the shell.