Motor for washing machine

A motor for a washing machine, comprising a driving shaft coupled to a drum of the washing machine, a stator for forming a magnetic field with a coil wound on a core, and a rotor rotatably mounted on an outside of the stator, the rotor being coupled to the driving shaft for driving the driving shaft, the rotor comprising:

• a rotor frame formed of metal having magnets attached to an inside surface of an outer end of the rotor frame;
• a back yoke on an outside surface of the outer end of the rotor frame for reinforcing the rotor frame and forming a magnetic path;
• a shaft supporting housing of metal having a projection radiating from an outside circumferential surface of the shaft supporting housing, the shaft supporting housing at a center of the rotor frame and having one end portion of the driving shaft secured thereto;
• a bushing of a non-conductive resin being insert molded about the shaft supporting housing and engulfing at least the projection, where the shaft supporting housing is disposed at a center of the bushing thereby forming one body sharing contiguous surfaces at an interface of at least the projection and the bushing, the bushing being secured to the rotor frame;
• fastening members for fastening the bushing to the rotor frame;
• and
• guide members for guiding a fastening position of the bushing to the rotor frame.

A motor for a washing machine, comprising a driving shaft coupled to a drum of the washing machine, a stator for forming a magnetic field with a coil wound on a core, and a rotor rotatably mounted on an outside of the stator, the rotor being coupled to the driving shaft for driving the driving shaft, the rotor comprising:

• a rotor frame formed of metal having magnets attached to an inside surface of an outer end of the rotor frame;
• a back yoke on an outside surface of the outer end of the rotor frame for reinforcing the rotor frame and forming a magnetic path;
• a shaft supporting housing having a projection radiating from an outside circumferential surface of the shaft supporting housing, the shaft supporting housing at a center of the rotor frame and having one end portion of the driving shaft secured thereto;
• and
• a bushing of a non-conductive material being insert molded about the shaft supporting housing and engulfing at least the projection, and the bushing being insert molded with the rotor frame such that the bushing, the shaft supporting housing and the rotor frame form one body, wherein the shaft supporting housing and the bushing share contiguous surfaces at an interface of at least the projection and the bushing, and where the bushing fixedly secures the shaft supporting housing and the rotor frame.