A vacuum cleaner and suction nozzle thereof. The vacuum cleaner has a housing, dust collecting unit, filter assembly, motor assembly and roller brush. The suction nozzle has a bottom housing, front cover and roller brush. The housing includes a concave cavity; the bottom housing and the front cover latch together to form a chamber; the roller brush assembly and the separation piece fit into this chamber; the separation piece corresponds to a transmission component of the roller brush. When rotating at high speed, the roller brush forms a seamless and closed separation face with the separation piece, preventing foreign matter from entering the transmission component, thus avoiding reduced suction and damage due to a tangled synchronous belt or a shaft jamming a roller brush bearing.

A vacuum cleaner that can perform cleaning after grasping a shape of a cleaning area, and perform cleaning more efficiently. The vacuum cleaner includes a main casing, a driving wheel, a travel control part, a cleaning unit, a periphery detection sensor, and a map generation part. The driving wheel enables the main casing to travel. The travel control part controls driving of the driving wheel to make the main casing travel autonomously. The cleaning unit performs cleaning. The periphery detection sensor detects a shape of a periphery area of the main casing. The travel control part controls the driving of the driving wheel to make the main casing perform a specified initial operation in a specified range, whereby the periphery detection sensor performs scanning. The map generation part generates a primary map of the cleaning area on the basis of the shape of the scanned periphery area.

A vacuum cleaner that can perform cleaning after grasping a shape of a cleaning area, and perform cleaning more efficiently. The vacuum cleaner includes a main casing, a driving wheel, a travel control part, a cleaning unit, a periphery detection sensor, and a map generation part. The driving wheel enables the main casing to travel. The travel control part controls driving of the driving wheel to make the main casing travel autonomously. The cleaning unit performs cleaning. The periphery detection sensor detects a shape of a periphery area of the main casing. The travel control part controls the driving of the driving wheel to make the main casing perform a specified initial operation in a specified range, whereby the periphery detection sensor performs scanning. The map generation part generates a primary map of the cleaning area on the basis of the shape of the scanned periphery area.

A surface cleaning head includes a removable rotatable driven agitator, such as a brush roll, which is driven by a drive mechanism that axially engages the driven end. The removable rotatable driven agitator may be located in an openable agitator chamber for purposes of removing debris and/or removing the agitator. The openable agitator chamber may be covered by an external cover that is movable between an open position and a closed position. The removable agitator may be secured in the agitator chamber by the external cover. Different removable agitators with different characteristics may be used interchangeably in the surface cleaning head. The surface cleaning head may also include one or more transparent regions (e.g., on the openable cover) to allow visual inspection of the agitator during use.