Vibration generating motor

A vibration generating motor, comprising:

• at least a first, a second, and a third rotor core operable about a rotary shaft;
• a coil winding portion on respective each said rotor core;
• a plurality of coils wound on respective each said coil winding portion;
• a weight member;
• said weight member having a shape enabling selective and fixable positioning at a first position between two adjacent ones of said at least first, second, and third rotor cores during an assembly of said motor;
• said weight member including an upper part and a lower part;
• said upper part including an upper body and a first and a second upper flange;
• said lower part including a lower body and a first and a second lower flange;
• means for seperably coupling said upper and said lower parts of said weight member during said assembly;
• said upper body and said lower body contacting during said assembly;
• said first and said second upper flanges contacting a top surface of said coil winding portions on respective said two adjacent ones;
• said first and said second lower flanges contacting a bottom surface of said coil winding portions on respective said two adjacent ones, whereby said means for separably coupling securely joins said weight member to said adjacent ones and enables a rapid assembly and secure operation of said motor;
• said means for separably coupling includes at least a first upper inserting opening on said upper body extending in an axial direction of said motor,
• said means for separably coupling further includes at least a first lower inserting opening in said lower body extending coaxial with said first inserting opening;
• and
• a said means for separably coupling including at least a first rivet member passing through said first upper and said first lower inserting openings and fixing said upper and lower parts together during said assembly, whereby an assembly time and an assembly cost are easily reduce for said motor.

A method of assembling a vibration generating motor, comprising the steps of:

• providing at least a first, a second, and a third rotor core operable about a rotary shaft;
• providing a coil winding portion on respective each said rotor core;
• providing a plurality of coils wound on respective each said coil winding portion;
• providing a weight member having an upper and a lower part;
• said upper part including an upper body and a first and a second upper flange;
• said lower part including a lower body and a first and a second lower flange;
• positioning said lower part at a first position between two adjacent ones of said at least first second, and third rotor cores;
• positioning said upper part on said lower part in said first position and contacting a top surface of said upper body with a bottom surface of said lower body;
• and
• separably coupling said upper part and said lower part, whereby said first and second upper flanges contact a top surface of said coil winding portions on respective two said adjacent ones, and said first and second lower flanges contact a bottom surface of said coil winding portions and securing said weight member to said adjacent ones.