Patent ID: 7157822

Claim:
A small vibration motor comprising: a rotor yoke in which an unbalance weight and a magnet are placed and which is fixed to a shaft; a driving torque generating coil that is placed on a substrate so as to face said magnet; driving electronic parts placed on said substrate, each of which comprises an integrated circuit comprising non-molded bare chips supplying an alternating current to said driving torque generating coil to rotate said rotor yoke around said shaft; a bottom plate which supports said substrate and to which a radial bearing that said shaft is engaged with is fixed; and a cover for covering said rotor yoke, said driving torque generating coil and said driving electronic parts, which is adhered to said bottom plate, wherein said substrate comprises a flexible substrate, and said driving torque generating coil is electrically connected to said flexible substrate, wherein said substrate protrudes from said cover adhered to said bottom plate and comprises a terminal formed thereon, wherein said terminal is engaged with a connector mounted on an external member and is thereby electrically connected with said external member.