A cleaning robot includes a main body, a drive assembly and a cleaning assembly. The main body includes a bottom part. The cleaning assembly includes a mounting part, a wiping part and a release part. The mounting part is positioned on the bottom part. The mounting part includes a first rail, a second rail, and a first positioning part. The wiping part is positioned on the mounting part and includes a second positioning part, the wiping part is movable from first ends of the first rail and the second rail to second ends thereof until the second positioning part abuts against the first positioning part whereby the wiping part is fixed on the mounting part. The release part is positioned on the mounting part and configured to separate the second positioning part from the first positioning part whereby the wiping part is detached from the mounting part.

A floor cleaning device includes a floor covering compartment having a cleaning opening, a vacuum generating device, a suction pipe that connects the floor covering compartment to the vacuum generating device so that suction force is applied on the surface covered by the cleaning opening, a cleaning head body that holds the floor covering compartment, and a vibrating device that causes vibration of the floor covering compartment relative to the cleaning head body. The periphery of the cleaning opening is adapted to contact a surface to be cleaned so that a sealed cleaning space is formed inside the floor covering compartment and over the portion of the surface covered by the cleaning opening. Strong negative pressure is built up in the sealed cleaning space to enhance suction efficiency. Vibration temporarily breaks the sealed state to facilitate moving of the floor covering compartment.

A cleaner includes a cleaner body including a main cleaning unit for generating suction force, a nozzle assembly rotatably connected to the cleaner body and including a suction port for sucking in air and dust, and an auxiliary cleaning unit connected to the nozzle assembly and including a cloth supporter to which a cloth is attached. The nozzle assembly includes a front wheel and a rear wheel spaced apart from the front wheel, and a shaft of the rear wheel is relatively movably connected to the nozzle assembly to change a contact area between the cloth and a floor.

Methods and apparatus for cleaning a surface with a cleaning device having a body with a handle, a connector, and one or more cleaning heads that are removably attached to the cleaning device. Each cleaning head include a lower surface arranged to contact a surface to be cleaned and a dirt collection chamber permanently attached to the cleaning head. The cleaning head may include a support structure to support the dirt collection chamber and a cleaning sheet. The cleaning head also may include a suction nozzle. At least a portion of the dirt collection chamber may be made of a filter material.

A nozzle (10) for a floor cleaning device, suitable for both wet and dry cleaning, the nozzle comprising an airflow inlet (50) at a front end of the nozzle, and a detachable cleaning device (90) that, if mounted on the nozzle (10), lifts a rear end of the nozzle.

Surface cleaning device, comprising a cloth (C) placed on a porous material (PM), a reservoir (R) for collecting liquid absorbed by the cloth (C), and an arrangement (P) for applying under-pressure in the reservoir (R) so as to transfer liquid from the cloth (C) into the reservoir (R). A pore size of the porous material (PM) is between 1 μm and 50 μm.

A nozzle for a cleaner includes a nozzle housing including a suction flow path through which air including dust flows and at least a portion of which extends in a front and rear direction. First and second rotation cleaning units are arranged on the lower side of the nozzle housing to be spaced apart from each other in a lateral direction. Each of the first and second rotation cleaning units includes a rotation plate adapted for attachment of a mop. A first driving device including a first driving motor drives the first rotation cleaning unit and a second driving device including a second driving motor drives the second rotation cleaning unit. A water tank mounted on the nozzle stores water to be supplied to the mop.

A cleaning device is removably attachable to a replacement head. The replacement head includes pad that is attached to the lower side of an attachment member and is in contact with the floor during cleaning. The cleaning device is removably attached to the attachment member of the replacement head by lowering the cleaning device body downward vertically onto the replacement head until a mechanical connection is achieved.

Methods and apparatus for cleaning a surface with a cleaning device having a body with a handle, a connector, and one or more cleaning heads that are removably attached to the cleaning device. Each cleaning head include a lower surface arranged to contact a surface to be cleaned and a dirt collection chamber permanently attached to the cleaning head. The cleaning head may include a support structure to support the dirt collection chamber and a cleaning sheet. The cleaning head also may include a suction nozzle. At least a portion of the dirt collection chamber may be made of a filter material.

A nozzle for a cleaner includes a nozzle housing including a suction flow path through which air including dust flows and at least a portion of which extends in a front and rear direction. First and second rotation cleaning units are arranged on the lower side of the nozzle housing to be spaced apart from each other in a lateral direction. Each of the first and second rotation cleaning units includes a rotation plate adapted for attachment of a mop. A first driving device including a first driving motor drives the first rotation cleaning unit and a second driving device including a second driving motor drives the second rotation cleaning unit. A water tank mounted on the nozzle stores water to be supplied to the mop.