A floor cleaner can include a housing adapted for movement over a surface to be cleaned and at least one edge cleaning brush provided on the housing. The edge cleaning brush includes multiple cleaning implements which rotate at different velocities. A gear system, such as a planetary gear system, can drive one cleaning implement at a lower speed than another cleaning implement.

Embodiments of the disclosure relate to a robot cleaner and a controlling method thereof, and more particularly, to a robot cleaner and a traveling algorithm of a robot cleaner having an improved structure. A robot cleaner of the disclosure includes a brush unit having a suction flow path, a body unit configured to have a driving device, and be coupled to the brush unit to be rotatable with respect to the brush unit and a redirection device configured to rotate the body unit relative to the brush unit, and the redirection device includes a rotation guide extending along an inner circumferential surface of the brush unit, a rotation driving source disposed in the body unit and generating power, and a power transmission member which moves along the rotation guide by the power transmitted from the rotation driving source and rotates the body unit with respect to the brush unit.

A floor cleaner can include a housing adapted for movement over a surface to be cleaned and at least one edge cleaning brush provided on the housing. The edge cleaning brush includes multiple cleaning implements which rotate on different axes. A gear system, such as a planetary gear system, can drive one cleaning implement at a lower speed than another cleaning implement.

A brushroll for a vacuum cleaner includes a brush dowel having a plurality of bristles and a drive motor within the brush dowel for rotating the brush dowel in a first direction of rotation, wherein an armature and motor shaft of the drive motor counter-rotates in a second direction of rotation.

A nozzle part and a robot cleaner including same are disclosed. A nozzle part according to various embodiments of the present invention comprises: a brush for collecting waste such as hair; and a removing member for removing the waste, such as hair, that is stuck to the brush. The removing member more quickly rotates than the brush in the same direction to remove the waste, such as hair, that is stuck to the brush. Therefore, the waste such as hair can be easily collected, removed and captured. Thus, user convenience can be improved.

A vacuum system comprises a vacuum source, an energy-storage device, a handle operatively connected to the vacuum source, an extension tube operatively connected to the handle, and a power head. The power head comprises a housing assembly and a brush assembly. The brush assembly comprises a brush defining an axle chamber, a motor assembly, and a transmission system. At least part of the motor assembly is arranged within the axle chamber, and a fixed portion of the motor assembly is supported relative to the housing assembly. The transmission system transmits rotation of the rotating portion of the motor assembly to the brush. At least part of the transmission system is arranged within the axle chamber. Operation of the vacuum source causes air to be drawn into the handle. The rotating portion of the motor assembly rotates the brush through the transmission system relative to the brush housing.

A floor cleaner can include a housing adapted for movement over a surface to be cleaned and at least one edge cleaning brush provided on the housing. The edge cleaning brush includes multiple cleaning implements which rotate at different velocities. A gear system, such as a planetary gear system, can drive one cleaning implement at a lower speed than another cleaning implement.

A cleaner head for a vacuum cleaner has a housing, an agitator mounted within the housing, and a drive mechanism for driving the agitator about a first axis A. The drive mechanism is mounted to the housing for rotation about a second axis R. The second axis R is offset from the first axis A. When the agitator is brought into contact with a surface to be cleaned, the surface exerts a reaction torque on the agitator that causes the drive mechanism to rotate about the second axis R.

A suction nozzle includes a casing which defines a suction chamber, and an agitator rotatably mounted within the suction chamber. The agitator is supported in the suction chamber by a support member. A drive assembly arranged to rotate the agitator about an axis is mounted to the casing via the support member, and is mounted to the support member via a first soft mounting member. The support member is mounted to the casing via a second soft mounting member.

A cleaner head for a vacuum cleaner has a housing, an agitator mounted within the housing, and a drive mechanism for driving the agitator about a first axis A. The drive mechanism is mounted to the housing for rotation about a second axis R. The second axis R is offset from the first axis A. When the agitator is brought into contact with a surface to be cleaned, the surface exerts a reaction torque on the agitator that causes the drive mechanism to rotate about the second axis R.