Rotor for motor and method of manufacturing the same

A rotor for a motor, the rotor comprising:

• a rotor core;
• a plurality of permanent magnets arranged in a circumferential direction of the rotor core;
• a rotor plate coupled to the rotor core;
• and
• a molding part formed by molding a resin composition for a molding material on the plurality of permanent magnets so that the molding part is shaped to integrally connect the plurality of permanent magnets arranged in the circumferential direction,
• wherein the rotor plate, the rotor core, the plurality of permanent magnets, and the formed molding part are coupled on the rotor,
• wherein the molding part covers a surface of the rotor core between adjacent permanent magnets in the plurality of permanent magnets.

A method of manufacturing a rotor for a motor, the method comprising:

• preparing a rotor plate, a rotor core, and a plurality of permanent magnets;
• coupling the rotor core to the rotor plate;
• and
• forming a molding part, wherein the molding part is formed by molding a resin composition for a molding material on the plurality of permanent magnets so that the molding part is shaped to integrally connect the plurality of permanent magnets in a circumferential direction of the rotor core,
• wherein the rotor is manufactured such that the rotor plate, the rotor core, the plurality of permanent magnets, and the formed molding part are coupled,
• wherein the molding part is formed by a molding process in which the plurality of permanent magnets is installed in a cavity of a mold to be disposed at predetermined intervals in a circumferential direction, and then the molten resin composition for a molding material is injected into the cavity of the mold in which the permanent magnets are installed.