A wheel driving device includes: a motor rotating a shaft: an input gear fixed to the shaft; at least one transmission gear meshed with the input gear to transmit power of the motor; and a final gear meshed with the transmission gear and connected with a wheel via an axis to transmit the power from the transmission gear to the wheel. The wheel driving device includes an extraction gear meshed with the final gear or the transmission gear, and a power transmission part connected with the extraction gear to transmit the power from the extraction gear to a cleaner head.

A nozzle for a vacuum cleaner and a vacuum cleaner are provided. The nozzle may include a main nozzle; at least one movable nozzle rotatably coupled to the main nozzle; and a rotary cleaner provided inside of the main nozzle and the movable nozzle that cleans a floor surface using a rotary motion. The rotary cleaner may include a main shaft rotatably provided inside of the main nozzle, and at least one auxiliary shaft provided inside of the movable nozzle and connected to the main shaft. The at least one auxiliary shaft may rotate using a rotational force transmitted from the main shaft.

A robot cleaner drives various brushes using a single motor. The robot cleaner includes a main body having a suction port, a main brush rotatably disposed in the suction port, an auxiliary brush rotatably disposed adjacent to the main brush and at least one side brush rotatably installed to move dust to the suction port, wherein the main brush, the auxiliary brush, and the at least one side brush are driven by a single motor in an interlocking fashion.

A nozzle for a vacuum cleaner and a vacuum cleaner are provided. The nozzle may include a main nozzle; at least one movable nozzle rotatably coupled to the main nozzle; and a rotary cleaner provided inside of the main nozzle and the movable nozzle that cleans a floor surface using a rotary motion. The rotary cleaner may include a main shaft rotatably provided inside of the main nozzle, and at least one auxiliary shaft provided inside of the movable nozzle and connected to the main shaft. The at least one auxiliary shaft may rotate using a rotational force transmitted from the main shaft.

A cleaning head connectable to a vacuum cleaner comprises a cassette removeably mountable on the cleaning head. A rotatable bar has projecting cleaning elements engageable with a surface to be cleaned and the rotatable bar is removeably mountable in the cassette. A first cassette mounting assembly is coupled to the rotatable bar at a first end with a first spindle. A second cassette mounting assembly is coupled to the rotatable bar at a second end with a second spindle. The first and second cassette mounting assemblies have removable cover portions for shielding the first and second spindles from debris and the first cassette mounting assembly is rotatably coupled to and removable with the first spindle.

The present disclosure relates to a cleaner including a cleaning module, and the cleaning module according to the present disclosure includes an agitator inserted into an opening portion and rotatably coupled to a housing, an end cap configured to cover the opening portion and separably coupled to the housing, a first shaft coupled to the end cap and extending toward the inside of the agitator along a rotary shaft of the agitator, and a first bearing disposed at least partially inside the agitator and coupled to the first shaft, in which the end cap is coupled to or separated from the housing together with the first shaft and the first bearing, and the end cap is integrally coupled to or separated from the housing together with the first shaft and the first bearing, such that the agitator, which may be washed with water, may be easily separated from the first shaft or the first bearing, which cannot be washed with water, and the agitator may be easily cleaned with water.

A cleaner head for a vacuum cleaner. The cleaner head has a housing defining a suction chamber comprising an outlet. The housing has a first side on which a first agitator element is mounted for rotation, and a second side on which a second agitator element is mounted for rotation. The one or both of the agitator elements have a shape which tapers from one end of the agitator element to the other.

A damping member is for damping vibration of a cleaning device including a first member and a second member. The damping member includes: a first contact surface that is in contact with the first member and a second contact surface that is in contact with the second member. The first contact surface includes at least two contact surfaces facing in directions different from each other.

The present disclosure provides a dust box including a first chamber including a waste inlet; a second chamber including an air outlet; and a transition channel.