Patent ID: 8446055

Claim:
A linear type vibration motor having a magnet casing, the linear type vibration motor comprising: a magnet assembly having a pair of magnets, same magnetic poles thereof facing each other; a magnet casing having a hollow part formed therein and housing the magnet assembly in the hollow part; a base having a bobbin formed thereon, the magnet casing being inserted into the bobbin; a coil being coupled to the bobbin; a weight coupled to both ends of the magnet casing; and a pair of elastic bodies interposed between either end of the base and either end of the weight, respectively, wherein at least one fixing protrusion is formed on both ends of the magnet casing, and the fixing protrusion is configured to fix the magnet assembly by being bent toward a central axis of the magnet casing such that the magnet assembly is prevented from being detached.