A wet-cleaning appliance, in particular a wet mop, has a cleaning roller, which is mounted in a rotatable manner about a roller axis, and a roller cover, which encloses the cleaning roller in the circumferential direction, at least in part, and has at least one displaceable covering element for optionally closing and/or releasing an opening region of the roller cover. In order to create a wet-cleaning appliance which, as far as the user is concerned, can be transferred in a particularly convenient and reliable manner from mopping operation to regeneration operation, the displaceable covering element should be coupled to the cleaning roller by a gear mechanism, in particular a toothed gear mechanism, such that the cleaning roller can be displaced by virtue of the covering element being displaced or the covering element can be displaced by virtue of the cleaning roller being displaced.

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 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 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 wet-cleaning appliance, in particular a wet mop, has a cleaning roller, which is mounted in a rotatable manner about a roller axis, and a roller cover, which encloses the cleaning roller in the circumferential direction, at least in part, and has at least one displaceable covering element for optionally closing and/or releasing an opening region of the roller cover. In order to create a wet-cleaning appliance which, as far as the user is concerned, can be transferred in a particularly convenient and reliable manner from mopping operation to regeneration operation, the displaceable covering element should be coupled to the cleaning roller by a gear mechanism, in particular a toothed gear mechanism, such that the cleaning roller can be displaced by virtue of the covering element being displaced or the covering element can be displaced by virtue of the cleaning roller being displaced.

The present disclosure relates to a cleaner including a cleaner main body having a controller, a wheel cover mounted on the cleaner main body, a driving module coupled to the wheel cover to be movable up and down, a driving wheel coupled to the driving module and configured to be rotatable by receiving driving force from the driving module, a guide bar coupled to the wheel cover and provided in an up and down direction, the guide bar being inserted through the driving module to guide the upward and downward movement of the driving module, and an elastic member surrounding the guide bar and connected to the wheel cover and the driving module, respectively, to absorb impacts while the driving module is moved up and down.

A suction nozzle for a vacuum cleaner that includes an agitator defining a longitudinal axis and being rotatable about said longitudinal axis; a motor configured to rotate the agitator; and a coolant path extending from an inlet to an outlet. The coolant path is configured to direct an air flow from the inlet, past the motor and subsequently over or through the motor, to the outlet.

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 blade driving structure, includes a planetary gear transmission mechanism, a fixing portion is provided on a second side, a sun gear of the planetary gear transmission mechanism is fixedly connected to the fixing portion, a gear ring of the planetary gear transmission mechanism is connected to a rotating cylinder, and a planet carrier acts as a transmission output and drives a second driving shaft to rotate through a coupling; a reciprocating motion structure includes a rotating body, the second driving shaft is in circumferential transmission connection with the rotating body, and a track of the rotating body engages with a driving member to convert a rotation of the rotating body driven by the second driving shaft into a reciprocation of the driving member. The solution of the present disclosure uses the planetary gear transmission to drive the reciprocating motion structure to reciprocate by means of rotation.

A power head for use with a vacuum system. The power head comprises a main body assembly, a brush assembly, and a latch system. The latch system detachably attaches the brush assembly to the main body assembly such that a main inlet portion of the main chamber is in fluid communication with a brush outlet and the battery is operatively connected to the motor. When the vacuum system is detachably attached to the main housing and the latch system detachably attaches the main housing to the brush housing, the vacuum system draws air through a brush inlet, a brush chamber, the brush outlet, the main inlet, a main chamber, and a main outlet and the battery supplies power to the motor such that the motor rotates the brush assembly relative to the brush housing.