Patent ID: 7865998

Claim:
A vacuum cleaner comprising a cleaner main body, a suction hose connected to the front portion of the cleaner main body, a handle formed at the end of the suction hose, an extension tube having its one end connected to the handle, a suction nozzle body detachably connected to the other end of the extension tube, for sucking the air and dust along the bottom, and a motor assembly installed in the cleaner main body, for generating suction force, wherein the motor assembly comprises: a motor housing; a motor installed in the motor housing, for supplying suction force; an impeller rotatably installed on a rotation shaft of the motor; an impeller cover coupled to the motor housing, for covering the impeller; a guide vane installed between the motor and the impeller, and composed of a plurality of diffuser vanes and a plurality of return vanes formed on the bottom surfaces of the diffuser vanes; and a bearing housing including a passage formation unit for forming passages by contacting the bottom ends of the return vanes, and a shaft support unit for supporting the rotation shaft of the motor.