The invention provides a resin component used within a memory disk drive device and a highly reliable memory disk drive device using the resin component, the resin component having excellent flame resistance and minimal outgas. A resin component used inside a memory disk drive device (1), the resin component being an insulating bushing for protecting a lead of a motor (2) when the lead is connected to a circuit board; a carriage (4) being molded integrally with a coil for driving a swing arm (3) provided with a pickup head (3a) for reading or writing information on a memory disk on a distal end thereof, and the carriage adapted for balancing the weight of the swing arm (3); or a ramp (5) for retracting the pickup head (3a) when the memory disk stops.