Spindle motor

A spindle motor comprising:

• a stationary shaft having an inner bore at an outer end portion in its axial direction and a hole communicating the inner bore with the interior of the motor;
• a cup-shaped rotor hub having a cylindrical side wall;
• a rotor magnet fixed to the cylindrical side wall of the rotor hub;
• a flange member integrally formed with the rotor hub at the lower end portion of the cylindrical side wall and extending radially outwardly for mounting data storage disks;
• bearing members mounted on the upper and lower portions of the shaft for rotatably supporting the rotor hub;
• an annular bushing holding an outer race of the lower bearing member and being in contact with the inner surface of the cylindrical side wall;
• a flexible printed circuit board having a plurality of electrically conductive lines;
• a stator disposed to oppose the rotor magnet and including a stator core and coils wound around the stator core;
• a wire lead from each of the coils connected to the flexible printed circuit board;
• a reinforcing member having a cylindrical portion and an annular substantially flat plate portion extending radially outwardly from one end of the cylindrical portion, the stator being fixed to the outer circumferential surface of the cylindrical portion, the flexible printed circuit board being attached to the annular flat plate portion on the side opposite from the stator;
• a connector having a body made of insulating material and a plurality of connective pins supported by the connector body to extend therethrough with upper and lower end portions of the pins exposed outside of the connector body, the connector body being fixed in the inner bore of the shaft and the upper end portion of the pins being electrically connected with the core wire leads via the flexible printed circuit board and circuit board leads which pass through the communicating hole.