Motor apparatus and cleaner having the same

A cleaner having a body forming an external appearance thereof, a motor apparatus to generate a suction force and a brush head having a predetermined length to make contact with a surface to be cleaned, the motor apparatus comprising:

• a shaft forming a central axis;
• a motor cover having an inlet hole to suction air;
• a fan connected to one side of the shaft and located adjacent to the motor cover;
• a rotor having a ferrite magnet coupled to a rotor core with a protrusion structure and rotatably installed at the shaft;
• and a stator circumferentially coupled to the rotor and having a coil wound therearound.

A motor apparatus, comprising:

• a shaft rotatably installed;
• a stator including one or more stator cores arranged in a circumferential direction, and a coil wound around the one or more stator cores;
• and
• a rotor disposed at an inside of the stator and provided in a form of a cylinder having a passage at a main axis thereof allowing the shaft to pass therethrough,
• wherein the rotor comprises a rotor core provided with a protrusion structure and one or more ferrite magnets coupled to the rotor core to provide a magnetic force.