Voice coil motor

摘要

A VCM (voice coil motor) is disclosed, the VCM including: a rotor including a lens-accommodating, both ends opened cylindrical bobbin and a coil block including a coil wound on a periphery of the bobbin; a stator including a cylindrical yoke formed with a lens-exposing opening, a plurality of magnets disposed inside the yoke and opposite to the coil block, and a housing disposed inside the yoke to fix the plurality of magnets; and an elastic member elastically supporting the bobbin.

主权项

1. A VCM (voice coil motor) comprising:
a housing comprising an upper plate and a lateral plate, wherein an accommodation hole is formed at the lateral plate of the housing; a bobbin disposed inside the housing; a magnet disposed at the accommodation hole; a coil block disposed on the bobbin and facing the magnet; a first elastic member coupled with a lower portion of the bobbin and a lower portion of the housing; a second elastic member coupled with an upper portion of the bobbin and an upper portion of the housing; a disengagement prevention unit inhibiting the magnet from being disengaged from the housing in a direction towards the coil block; and a stroke lug protruded from the upper plate of the housing to provide a stroke space of the bobbin.